#include "libavutil/timer.h"
#include "avcodec.h"
#include "internal.h"
-#include "get_bits.h"
-#include "put_bits.h"
#include "dsputil.h"
#include "rangecoder.h"
#include "golomb.h"
#include "mathops.h"
+#include "ffv1.h"
-#ifdef __INTEL_COMPILER
-#undef av_flatten
-#define av_flatten
-#endif
-
-#define MAX_PLANES 4
-#define CONTEXT_SIZE 32
-
-#define MAX_QUANT_TABLES 8
-#define MAX_CONTEXT_INPUTS 5
-
-extern const uint8_t ff_log2_run[41];
-
-static const int8_t quant5_10bit[256] = {
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
- -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
- -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
- -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
- -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0,
-};
-
-static const int8_t quant5[256] = {
- 0, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
- -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
- -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
- -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
- -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
- -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
- -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
- -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -1, -1, -1,
-};
-
-static const int8_t quant9_10bit[256] = {
- 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3,
- 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
- 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4,
- 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
- 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
- 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
- 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
- -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4,
- -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4,
- -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4,
- -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4,
- -4, -4, -4, -4, -4, -4, -4, -4, -4, -3, -3, -3, -3, -3, -3, -3,
- -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3,
- -3, -3, -3, -3, -3, -3, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
- -2, -2, -2, -2, -1, -1, -1, -1, -1, -1, -1, -1, -0, -0, -0, -0,
-};
-
-static const int8_t quant11[256] = {
- 0, 1, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4,
- 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
- 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
- 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
- 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
- 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
- 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
- 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
- -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5,
- -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5,
- -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5,
- -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5,
- -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5,
- -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -4, -4,
- -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4,
- -4, -4, -4, -4, -4, -3, -3, -3, -3, -3, -3, -3, -2, -2, -2, -1,
-};
-
-static const uint8_t ver2_state[256] = {
- 0, 10, 10, 10, 10, 16, 16, 16, 28, 16, 16, 29, 42, 49, 20, 49,
- 59, 25, 26, 26, 27, 31, 33, 33, 33, 34, 34, 37, 67, 38, 39, 39,
- 40, 40, 41, 79, 43, 44, 45, 45, 48, 48, 64, 50, 51, 52, 88, 52,
- 53, 74, 55, 57, 58, 58, 74, 60, 101, 61, 62, 84, 66, 66, 68, 69,
- 87, 82, 71, 97, 73, 73, 82, 75, 111, 77, 94, 78, 87, 81, 83, 97,
- 85, 83, 94, 86, 99, 89, 90, 99, 111, 92, 93, 134, 95, 98, 105, 98,
- 105, 110, 102, 108, 102, 118, 103, 106, 106, 113, 109, 112, 114, 112, 116, 125,
- 115, 116, 117, 117, 126, 119, 125, 121, 121, 123, 145, 124, 126, 131, 127, 129,
- 165, 130, 132, 138, 133, 135, 145, 136, 137, 139, 146, 141, 143, 142, 144, 148,
- 147, 155, 151, 149, 151, 150, 152, 157, 153, 154, 156, 168, 158, 162, 161, 160,
- 172, 163, 169, 164, 166, 184, 167, 170, 177, 174, 171, 173, 182, 176, 180, 178,
- 175, 189, 179, 181, 186, 183, 192, 185, 200, 187, 191, 188, 190, 197, 193, 196,
- 197, 194, 195, 196, 198, 202, 199, 201, 210, 203, 207, 204, 205, 206, 208, 214,
- 209, 211, 221, 212, 213, 215, 224, 216, 217, 218, 219, 220, 222, 228, 223, 225,
- 226, 224, 227, 229, 240, 230, 231, 232, 233, 234, 235, 236, 238, 239, 237, 242,
- 241, 243, 242, 244, 245, 246, 247, 248, 249, 250, 251, 252, 252, 253, 254, 255,
-};
-
-typedef struct VlcState {
- int16_t drift;
- uint16_t error_sum;
- int8_t bias;
- uint8_t count;
-} VlcState;
-
-typedef struct PlaneContext {
- int16_t quant_table[MAX_CONTEXT_INPUTS][256];
- int quant_table_index;
- int context_count;
- uint8_t (*state)[CONTEXT_SIZE];
- VlcState *vlc_state;
- uint8_t interlace_bit_state[2];
-} PlaneContext;
-
-#define MAX_SLICES 256
-
-typedef struct FFV1Context {
- AVClass *class;
- AVCodecContext *avctx;
- RangeCoder c;
- GetBitContext gb;
- PutBitContext pb;
- uint64_t rc_stat[256][2];
- uint64_t (*rc_stat2[MAX_QUANT_TABLES])[32][2];
- int version;
- int minor_version;
- int width, height;
- int chroma_h_shift, chroma_v_shift;
- int chroma_planes;
- int transparency;
- int flags;
- int picture_number;
- AVFrame picture;
- AVFrame last_picture;
- int plane_count;
- int ac; ///< 1=range coder <-> 0=golomb rice
- int ac_byte_count; ///< number of bytes used for AC coding
- PlaneContext plane[MAX_PLANES];
- int16_t quant_table[MAX_CONTEXT_INPUTS][256];
- int16_t quant_tables[MAX_QUANT_TABLES][MAX_CONTEXT_INPUTS][256];
- int context_count[MAX_QUANT_TABLES];
- uint8_t state_transition[256];
- uint8_t (*initial_states[MAX_QUANT_TABLES])[32];
- int run_index;
- int colorspace;
- int16_t *sample_buffer;
- int gob_count;
- int packed_at_lsb;
- int ec;
- int slice_damaged;
- int key_frame_ok;
-
- int quant_table_count;
-
- DSPContext dsp;
-
- struct FFV1Context *slice_context[MAX_SLICES];
- int slice_count;
- int num_v_slices;
- int num_h_slices;
- int slice_width;
- int slice_height;
- int slice_x;
- int slice_y;
- int bits_per_raw_sample;
-} FFV1Context;
-
-static av_always_inline int fold(int diff, int bits)
-{
- if (bits == 8)
- diff = (int8_t)diff;
- else {
- diff += 1 << (bits - 1);
- diff &= (1 << bits) - 1;
- diff -= 1 << (bits - 1);
- }
-
- return diff;
-}
-
-static inline int predict(int16_t *src, int16_t *last)
-{
- const int LT = last[-1];
- const int T = last[0];
- const int L = src[-1];
-
- return mid_pred(L, L + T - LT, T);
-}
-
-static inline int get_context(PlaneContext *p, int16_t *src,
- int16_t *last, int16_t *last2)
-{
- const int LT = last[-1];
- const int T = last[0];
- const int RT = last[1];
- const int L = src[-1];
-
- if (p->quant_table[3][127]) {
- const int TT = last2[0];
- const int LL = src[-2];
- return p->quant_table[0][(L - LT) & 0xFF] +
- p->quant_table[1][(LT - T) & 0xFF] +
- p->quant_table[2][(T - RT) & 0xFF] +
- p->quant_table[3][(LL - L) & 0xFF] +
- p->quant_table[4][(TT - T) & 0xFF];
- } else
- return p->quant_table[0][(L - LT) & 0xFF] +
- p->quant_table[1][(LT - T) & 0xFF] +
- p->quant_table[2][(T - RT) & 0xFF];
-}
-
-static void find_best_state(uint8_t best_state[256][256],
- const uint8_t one_state[256])
-{
- int i, j, k, m;
- double l2tab[256];
-
- for (i = 1; i < 256; i++)
- l2tab[i] = log2(i / 256.0);
-
- for (i = 0; i < 256; i++) {
- double best_len[256];
- double p = i / 256.0;
-
- for (j = 0; j < 256; j++)
- best_len[j] = 1 << 30;
-
- for (j = FFMAX(i - 10, 1); j < FFMIN(i + 11, 256); j++) {
- double occ[256] = { 0 };
- double len = 0;
- occ[j] = 1.0;
- for (k = 0; k < 256; k++) {
- double newocc[256] = { 0 };
- for (m = 1; m < 256; m++)
- if (occ[m]) {
- len -=occ[m]*( p *l2tab[ m]
- + (1-p)*l2tab[256-m]);
- }
- if (len < best_len[k]) {
- best_len[k] = len;
- best_state[i][k] = j;
- }
- for (m = 0; m < 256; m++)
- if (occ[m]) {
- newocc[ one_state[ m]] += occ[m] * p;
- newocc[256 - one_state[256 - m]] += occ[m] * (1 - p);
- }
- memcpy(occ, newocc, sizeof(occ));
- }
- }
- }
-}
-
-static av_always_inline av_flatten void put_symbol_inline(RangeCoder *c,
- uint8_t *state, int v,
- int is_signed,
- uint64_t rc_stat[256][2],
- uint64_t rc_stat2[32][2])
-{
- int i;
-
-#define put_rac(C, S, B) \
- do { \
- if (rc_stat) { \
- rc_stat[*(S)][B]++; \
- rc_stat2[(S) - state][B]++; \
- } \
- put_rac(C, S, B); \
- } while (0)
-
- if (v) {
- const int a = FFABS(v);
- const int e = av_log2(a);
- put_rac(c, state + 0, 0);
- if (e <= 9) {
- for (i = 0; i < e; i++)
- put_rac(c, state + 1 + i, 1); // 1..10
- put_rac(c, state + 1 + i, 0);
-
- for (i = e - 1; i >= 0; i--)
- put_rac(c, state + 22 + i, (a >> i) & 1); // 22..31
-
- if (is_signed)
- put_rac(c, state + 11 + e, v < 0); // 11..21
- } else {
- for (i = 0; i < e; i++)
- put_rac(c, state + 1 + FFMIN(i, 9), 1); // 1..10
- put_rac(c, state + 1 + 9, 0);
-
- for (i = e - 1; i >= 0; i--)
- put_rac(c, state + 22 + FFMIN(i, 9), (a >> i) & 1); // 22..31
-
- if (is_signed)
- put_rac(c, state + 11 + 10, v < 0); // 11..21
- }
- } else {
- put_rac(c, state + 0, 1);
- }
-#undef put_rac
-}
-
-static av_noinline void put_symbol(RangeCoder *c, uint8_t *state,
- int v, int is_signed)
-{
- put_symbol_inline(c, state, v, is_signed, NULL, NULL);
-}
-
-static inline av_flatten int get_symbol_inline(RangeCoder *c, uint8_t *state,
- int is_signed)
-{
- if (get_rac(c, state + 0))
- return 0;
- else {
- int i, e, a;
- e = 0;
- while (get_rac(c, state + 1 + FFMIN(e, 9))) // 1..10
- e++;
-
- a = 1;
- for (i = e - 1; i >= 0; i--)
- a += a + get_rac(c, state + 22 + FFMIN(i, 9)); // 22..31
-
- e = -(is_signed && get_rac(c, state + 11 + FFMIN(e, 10))); // 11..21
- return (a ^ e) - e;
- }
-}
-
-static av_noinline int get_symbol(RangeCoder *c, uint8_t *state, int is_signed)
-{
- return get_symbol_inline(c, state, is_signed);
-}
-
-static inline void update_vlc_state(VlcState *const state, const int v)
-{
- int drift = state->drift;
- int count = state->count;
- state->error_sum += FFABS(v);
- drift += v;
-
- if (count == 128) { // FIXME: variable
- count >>= 1;
- drift >>= 1;
- state->error_sum >>= 1;
- }
- count++;
-
- if (drift <= -count) {
- if (state->bias > -128)
- state->bias--;
-
- drift += count;
- if (drift <= -count)
- drift = -count + 1;
- } else if (drift > 0) {
- if (state->bias < 127)
- state->bias++;
-
- drift -= count;
- if (drift > 0)
- drift = 0;
- }
-
- state->drift = drift;
- state->count = count;
-}
-
-static inline void put_vlc_symbol(PutBitContext *pb, VlcState *const state,
- int v, int bits)
-{
- int i, k, code;
- v = fold(v - state->bias, bits);
-
- i = state->count;
- k = 0;
- while (i < state->error_sum) { // FIXME: optimize
- k++;
- i += i;
- }
-
- av_assert2(k<=13);
-
-#if 0 // JPEG LS
- if (k == 0 && 2 * state->drift <= -state->count)
- code = v ^ (-1);
- else
- code = v;
-#else
- code = v ^ ((2 * state->drift + state->count) >> 31);
-#endif
-
- av_dlog(NULL, "v:%d/%d bias:%d error:%d drift:%d count:%d k:%d\n", v, code,
- state->bias, state->error_sum, state->drift, state->count, k);
- set_sr_golomb(pb, code, k, 12, bits);
-
- update_vlc_state(state, v);
-}
-
-static inline int get_vlc_symbol(GetBitContext *gb, VlcState *const state,
- int bits)
-{
- int k, i, v, ret;
-
- i = state->count;
- k = 0;
- while (i < state->error_sum) { // FIXME: optimize
- k++;
- i += i;
- }
-
- assert(k <= 8);
-
- v = get_sr_golomb(gb, k, 12, bits);
- av_dlog(NULL, "v:%d bias:%d error:%d drift:%d count:%d k:%d",
- v, state->bias, state->error_sum, state->drift, state->count, k);
-
-#if 0 // JPEG LS
- if (k == 0 && 2 * state->drift <= -state->count)
- v ^= (-1);
-#else
- v ^= ((2 * state->drift + state->count) >> 31);
-#endif
-
- ret = fold(v + state->bias, bits);
-
- update_vlc_state(state, v);
-
- return ret;
-}
-
-#if CONFIG_FFV1_ENCODER
-static av_always_inline int encode_line(FFV1Context *s, int w,
- int16_t *sample[3],
- int plane_index, int bits)
-{
- PlaneContext *const p = &s->plane[plane_index];
- RangeCoder *const c = &s->c;
- int x;
- int run_index = s->run_index;
- int run_count = 0;
- int run_mode = 0;
-
- if (s->ac) {
- if (c->bytestream_end - c->bytestream < w * 20) {
- av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
- return -1;
- }
- } else {
- if (s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb) >> 3) < w * 4) {
- av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
- return -1;
- }
- }
-
- for (x = 0; x < w; x++) {
- int diff, context;
-
- context = get_context(p, sample[0] + x, sample[1] + x, sample[2] + x);
- diff = sample[0][x] - predict(sample[0] + x, sample[1] + x);
-
- if (context < 0) {
- context = -context;
- diff = -diff;
- }
-
- diff = fold(diff, bits);
-
- if (s->ac) {
- if (s->flags & CODEC_FLAG_PASS1) {
- put_symbol_inline(c, p->state[context], diff, 1, s->rc_stat,
- s->rc_stat2[p->quant_table_index][context]);
- } else {
- put_symbol_inline(c, p->state[context], diff, 1, NULL, NULL);
- }
- } else {
- if (context == 0)
- run_mode = 1;
-
- if (run_mode) {
- if (diff) {
- while (run_count >= 1 << ff_log2_run[run_index]) {
- run_count -= 1 << ff_log2_run[run_index];
- run_index++;
- put_bits(&s->pb, 1, 1);
- }
-
- put_bits(&s->pb, 1 + ff_log2_run[run_index], run_count);
- if (run_index)
- run_index--;
- run_count = 0;
- run_mode = 0;
- if (diff > 0)
- diff--;
- } else {
- run_count++;
- }
- }
-
- av_dlog(s->avctx, "count:%d index:%d, mode:%d, x:%d pos:%d\n",
- run_count, run_index, run_mode, x,
- (int)put_bits_count(&s->pb));
-
- if (run_mode == 0)
- put_vlc_symbol(&s->pb, &p->vlc_state[context], diff, bits);
- }
- }
- if (run_mode) {
- while (run_count >= 1 << ff_log2_run[run_index]) {
- run_count -= 1 << ff_log2_run[run_index];
- run_index++;
- put_bits(&s->pb, 1, 1);
- }
-
- if (run_count)
- put_bits(&s->pb, 1, 1);
- }
- s->run_index = run_index;
-
- return 0;
-}
-
-static void encode_plane(FFV1Context *s, uint8_t *src, int w, int h,
- int stride, int plane_index)
-{
- int x, y, i;
- const int ring_size = s->avctx->context_model ? 3 : 2;
- int16_t *sample[3];
- s->run_index = 0;
-
- memset(s->sample_buffer, 0, ring_size * (w + 6) * sizeof(*s->sample_buffer));
-
- for (y = 0; y < h; y++) {
- for (i = 0; i < ring_size; i++)
- sample[i] = s->sample_buffer + (w + 6) * ((h + i - y) % ring_size) + 3;
-
- sample[0][-1]= sample[1][0 ];
- sample[1][ w]= sample[1][w-1];
-// { START_TIMER
- if (s->bits_per_raw_sample <= 8) {
- for (x = 0; x < w; x++)
- sample[0][x] = src[x + stride * y];
- encode_line(s, w, sample, plane_index, 8);
- } else {
- if (s->packed_at_lsb) {
- for (x = 0; x < w; x++) {
- sample[0][x] = ((uint16_t*)(src + stride*y))[x];
- }
- } else {
- for (x = 0; x < w; x++) {
- sample[0][x] = ((uint16_t*)(src + stride*y))[x] >> (16 - s->bits_per_raw_sample);
- }
- }
- encode_line(s, w, sample, plane_index, s->bits_per_raw_sample);
- }
-// STOP_TIMER("encode line") }
- }
-}
-
-static void encode_rgb_frame(FFV1Context *s, uint8_t *src[3], int w, int h, int stride[3])
-{
- int x, y, p, i;
- const int ring_size = s->avctx->context_model ? 3 : 2;
- int16_t *sample[4][3];
- int lbd = s->avctx->bits_per_raw_sample <= 8;
- int bits = s->avctx->bits_per_raw_sample > 0 ? s->avctx->bits_per_raw_sample : 8;
- int offset = 1 << bits;
- s->run_index = 0;
-
- memset(s->sample_buffer, 0, ring_size * 4 * (w + 6) * sizeof(*s->sample_buffer));
-
- for (y = 0; y < h; y++) {
- for (i = 0; i < ring_size; i++)
- for (p = 0; p < 4; p++)
- sample[p][i]= s->sample_buffer + p*ring_size*(w+6) + ((h+i-y)%ring_size)*(w+6) + 3;
-
- for (x = 0; x < w; x++) {
- int b, g, r, av_uninit(a);
- if (lbd) {
- unsigned v = *((uint32_t*)(src[0] + x*4 + stride[0]*y));
- b = v & 0xFF;
- g = (v >> 8) & 0xFF;
- r = (v >> 16) & 0xFF;
- a = v >> 24;
- } else {
- b = *((uint16_t*)(src[0] + x*2 + stride[0]*y));
- g = *((uint16_t*)(src[1] + x*2 + stride[1]*y));
- r = *((uint16_t*)(src[2] + x*2 + stride[2]*y));
- }
-
- b -= g;
- r -= g;
- g += (b + r) >> 2;
- b += offset;
- r += offset;
-
- sample[0][0][x] = g;
- sample[1][0][x] = b;
- sample[2][0][x] = r;
- sample[3][0][x] = a;
- }
- for (p = 0; p < 3 + s->transparency; p++) {
- sample[p][0][-1] = sample[p][1][0 ];
- sample[p][1][ w] = sample[p][1][w-1];
- if (lbd)
- encode_line(s, w, sample[p], (p+1)/2, 9);
- else
- encode_line(s, w, sample[p], (p+1)/2, bits+1);
- }
- }
-}
-
-static void write_quant_table(RangeCoder *c, int16_t *quant_table)
-{
- int last = 0;
- int i;
- uint8_t state[CONTEXT_SIZE];
- memset(state, 128, sizeof(state));
-
- for (i = 1; i < 128; i++)
- if (quant_table[i] != quant_table[i - 1]) {
- put_symbol(c, state, i - last - 1, 0);
- last = i;
- }
- put_symbol(c, state, i - last - 1, 0);
-}
-
-static void write_quant_tables(RangeCoder *c,
- int16_t quant_table[MAX_CONTEXT_INPUTS][256])
-{
- int i;
- for (i = 0; i < 5; i++)
- write_quant_table(c, quant_table[i]);
-}
-
-static void write_header(FFV1Context *f)
-{
- uint8_t state[CONTEXT_SIZE];
- int i, j;
- RangeCoder *const c = &f->slice_context[0]->c;
-
- memset(state, 128, sizeof(state));
-
- if (f->version < 2) {
- put_symbol(c, state, f->version, 0);
- put_symbol(c, state, f->ac, 0);
- if (f->ac > 1) {
- for (i = 1; i < 256; i++)
- put_symbol(c, state,
- f->state_transition[i] - c->one_state[i], 1);
- }
- put_symbol(c, state, f->colorspace, 0); //YUV cs type
- if (f->version > 0)
- put_symbol(c, state, f->bits_per_raw_sample, 0);
- put_rac(c, state, f->chroma_planes);
- put_symbol(c, state, f->chroma_h_shift, 0);
- put_symbol(c, state, f->chroma_v_shift, 0);
- put_rac(c, state, f->transparency);
-
- write_quant_tables(c, f->quant_table);
- } else if (f->version < 3) {
- put_symbol(c, state, f->slice_count, 0);
- for (i = 0; i < f->slice_count; i++) {
- FFV1Context *fs = f->slice_context[i];
- put_symbol(c, state,
- (fs->slice_x + 1) * f->num_h_slices / f->width, 0);
- put_symbol(c, state,
- (fs->slice_y + 1) * f->num_v_slices / f->height, 0);
- put_symbol(c, state,
- (fs->slice_width + 1) * f->num_h_slices / f->width - 1,
- 0);
- put_symbol(c, state,
- (fs->slice_height + 1) * f->num_v_slices / f->height - 1,
- 0);
- for (j = 0; j < f->plane_count; j++) {
- put_symbol(c, state, f->plane[j].quant_table_index, 0);
- av_assert0(f->plane[j].quant_table_index == f->avctx->context_model);
- }
- }
- }
-}
-
-#endif /* CONFIG_FFV1_ENCODER */
-
-static av_cold int common_init(AVCodecContext *avctx)
+av_cold int ffv1_common_init(AVCodecContext *avctx)
{
FFV1Context *s = avctx->priv_data;
return 0;
}
-static int init_slice_state(FFV1Context *f, FFV1Context *fs)
+int ffv1_init_slice_state(FFV1Context *f, FFV1Context *fs)
{
int j;
return 0;
}
-static int init_slices_state(FFV1Context *f) {
+int ffv1_init_slices_state(FFV1Context *f) {
int i;
for (i = 0; i < f->slice_count; i++) {
FFV1Context *fs = f->slice_context[i];
- if (init_slice_state(f, fs) < 0)
+ if (ffv1_init_slice_state(f, fs) < 0)
return -1;
}
return 0;
}
-static av_cold int init_slice_contexts(FFV1Context *f)
+av_cold int ffv1_init_slice_contexts(FFV1Context *f)
{
int i;
return 0;
}
-static int allocate_initial_states(FFV1Context *f)
+int ffv1_allocate_initial_states(FFV1Context *f)
{
int i;
return 0;
}
-#if CONFIG_FFV1_ENCODER
-static int write_extra_header(FFV1Context *f)
-{
- RangeCoder *const c = &f->c;
- uint8_t state[CONTEXT_SIZE];
- int i, j, k;
- uint8_t state2[32][CONTEXT_SIZE];
- unsigned v;
-
- memset(state2, 128, sizeof(state2));
- memset(state, 128, sizeof(state));
-
- f->avctx->extradata = av_malloc(f->avctx->extradata_size = 10000 +
- (11 * 11 * 5 * 5 * 5 + 11 * 11 * 11) * 32);
- ff_init_range_encoder(c, f->avctx->extradata, f->avctx->extradata_size);
- ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
-
- put_symbol(c, state, f->version, 0);
- if (f->version > 2) {
- if (f->version == 3)
- f->minor_version = 2;
- put_symbol(c, state, f->minor_version, 0);
- }
- put_symbol(c, state, f->ac, 0);
- if (f->ac > 1)
- for (i = 1; i < 256; i++)
- put_symbol(c, state, f->state_transition[i] - c->one_state[i], 1);
- put_symbol(c, state, f->colorspace, 0); // YUV cs type
- put_symbol(c, state, f->bits_per_raw_sample, 0);
- put_rac(c, state, f->chroma_planes);
- put_symbol(c, state, f->chroma_h_shift, 0);
- put_symbol(c, state, f->chroma_v_shift, 0);
- put_rac(c, state, f->transparency);
- put_symbol(c, state, f->num_h_slices - 1, 0);
- put_symbol(c, state, f->num_v_slices - 1, 0);
-
- put_symbol(c, state, f->quant_table_count, 0);
- for (i = 0; i < f->quant_table_count; i++)
- write_quant_tables(c, f->quant_tables[i]);
-
- for (i = 0; i < f->quant_table_count; i++) {
- for (j = 0; j < f->context_count[i] * CONTEXT_SIZE; j++)
- if (f->initial_states[i] && f->initial_states[i][0][j] != 128)
- break;
- if (j < f->context_count[i] * CONTEXT_SIZE) {
- put_rac(c, state, 1);
- for (j = 0; j < f->context_count[i]; j++)
- for (k = 0; k < CONTEXT_SIZE; k++) {
- int pred = j ? f->initial_states[i][j - 1][k] : 128;
- put_symbol(c, state2[k],
- (int8_t)(f->initial_states[i][j][k] - pred), 1);
- }
- } else {
- put_rac(c, state, 0);
- }
- }
-
- if (f->version > 2) {
- put_symbol(c, state, f->ec, 0);
- }
-
- f->avctx->extradata_size = ff_rac_terminate(c);
- v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, f->avctx->extradata, f->avctx->extradata_size);
- AV_WL32(f->avctx->extradata + f->avctx->extradata_size, v);
- f->avctx->extradata_size += 4;
-
- return 0;
-}
-
-static int sort_stt(FFV1Context *s, uint8_t stt[256])
+void ffv1_clear_slice_state(FFV1Context *f, FFV1Context *fs)
{
- int i, i2, changed, print = 0;
-
- do {
- changed = 0;
- for (i = 12; i < 244; i++) {
- for (i2 = i + 1; i2 < 245 && i2 < i + 4; i2++) {
+ int i, j;
-#define COST(old, new) \
- s->rc_stat[old][0] * -log2((256 - (new)) / 256.0) + \
- s->rc_stat[old][1] * -log2((new) / 256.0)
+ for (i = 0; i < f->plane_count; i++) {
+ PlaneContext *p = &fs->plane[i];
-#define COST2(old, new) \
- COST(old, new) + COST(256 - (old), 256 - (new))
+ p->interlace_bit_state[0] = 128;
+ p->interlace_bit_state[1] = 128;
- double size0 = COST2(i, i) + COST2(i2, i2);
- double sizeX = COST2(i, i2) + COST2(i2, i);
- if (sizeX < size0 && i != 128 && i2 != 128) {
- int j;
- FFSWAP(int, stt[i], stt[i2]);
- FFSWAP(int, s->rc_stat[i][0], s->rc_stat[i2][0]);
- FFSWAP(int, s->rc_stat[i][1], s->rc_stat[i2][1]);
- if (i != 256 - i2) {
- FFSWAP(int, stt[256 - i], stt[256 - i2]);
- FFSWAP(int, s->rc_stat[256 - i][0], s->rc_stat[256 - i2][0]);
- FFSWAP(int, s->rc_stat[256 - i][1], s->rc_stat[256 - i2][1]);
- }
- for (j = 1; j < 256; j++) {
- if (stt[j] == i)
- stt[j] = i2;
- else if (stt[j] == i2)
- stt[j] = i;
- if (i != 256 - i2) {
- if (stt[256 - j] == 256 - i)
- stt[256 - j] = 256 - i2;
- else if (stt[256 - j] == 256 - i2)
- stt[256 - j] = 256 - i;
- }
- }
- print = changed = 1;
+ if (fs->ac) {
+ if (f->initial_states[p->quant_table_index]) {
+ memcpy(p->state, f->initial_states[p->quant_table_index],
+ CONTEXT_SIZE * p->context_count);
+ } else
+ memset(p->state, 128, CONTEXT_SIZE * p->context_count);
+ } else {
+ for (j = 0; j < p->context_count; j++) {
+ p->vlc_state[j].drift = 0;
+ p->vlc_state[j].error_sum = 4; // FFMAX((RANGE + 32)/64, 2);
+ p->vlc_state[j].bias = 0;
+ p->vlc_state[j].count = 1;
}
}
}
- } while (changed);
- return print;
}
-static av_cold int encode_init(AVCodecContext *avctx)
+
+av_cold int ffv1_common_end(AVCodecContext *avctx)
{
- const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
FFV1Context *s = avctx->priv_data;
- int i, j, k, m;
-
- common_init(avctx);
-
- s->version = 0;
-
- if ((avctx->flags & (CODEC_FLAG_PASS1|CODEC_FLAG_PASS2)) || avctx->slices>1)
- s->version = FFMAX(s->version, 2);
-
- if (avctx->level == 3) {
- s->version = 3;
- }
-
- if (s->ec < 0) {
- s->ec = (s->version >= 3);
- }
-
- if (s->version >= 2 && avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
- av_log(avctx, AV_LOG_ERROR, "Version 2 needed for requested features but version 2 is experimental and not enabled\n");
- return AVERROR_INVALIDDATA;
- }
-
- s->ac = avctx->coder_type > 0 ? 2 : 0;
+ int i, j;
- s->plane_count = 3;
- switch(avctx->pix_fmt) {
- case AV_PIX_FMT_YUV444P9:
- case AV_PIX_FMT_YUV422P9:
- case AV_PIX_FMT_YUV420P9:
- if (!avctx->bits_per_raw_sample)
- s->bits_per_raw_sample = 9;
- case AV_PIX_FMT_YUV444P10:
- case AV_PIX_FMT_YUV420P10:
- case AV_PIX_FMT_YUV422P10:
- s->packed_at_lsb = 1;
- if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
- s->bits_per_raw_sample = 10;
- case AV_PIX_FMT_GRAY16:
- case AV_PIX_FMT_YUV444P16:
- case AV_PIX_FMT_YUV422P16:
- case AV_PIX_FMT_YUV420P16:
- if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample) {
- s->bits_per_raw_sample = 16;
- } else if (!s->bits_per_raw_sample) {
- s->bits_per_raw_sample = avctx->bits_per_raw_sample;
- }
- if (s->bits_per_raw_sample <= 8) {
- av_log(avctx, AV_LOG_ERROR, "bits_per_raw_sample invalid\n");
- return AVERROR_INVALIDDATA;
- }
- if (!s->ac && avctx->coder_type == -1) {
- av_log(avctx, AV_LOG_INFO, "bits_per_raw_sample > 8, forcing coder 1\n");
- s->ac = 2;
- }
- if (!s->ac) {
- av_log(avctx, AV_LOG_ERROR, "bits_per_raw_sample of more than 8 needs -coder 1 currently\n");
- return AVERROR_INVALIDDATA;
- }
- s->version = FFMAX(s->version, 1);
- case AV_PIX_FMT_GRAY8:
- case AV_PIX_FMT_YUV444P:
- case AV_PIX_FMT_YUV440P:
- case AV_PIX_FMT_YUV422P:
- case AV_PIX_FMT_YUV420P:
- case AV_PIX_FMT_YUV411P:
- case AV_PIX_FMT_YUV410P:
- s->chroma_planes = desc->nb_components < 3 ? 0 : 1;
- s->colorspace = 0;
- break;
- case AV_PIX_FMT_YUVA444P:
- case AV_PIX_FMT_YUVA422P:
- case AV_PIX_FMT_YUVA420P:
- s->chroma_planes = 1;
- s->colorspace = 0;
- s->transparency = 1;
- break;
- case AV_PIX_FMT_RGB32:
- s->colorspace = 1;
- s->transparency = 1;
- break;
- case AV_PIX_FMT_0RGB32:
- s->colorspace = 1;
- break;
- case AV_PIX_FMT_GBRP9:
- if (!avctx->bits_per_raw_sample)
- s->bits_per_raw_sample = 9;
- case AV_PIX_FMT_GBRP10:
- if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
- s->bits_per_raw_sample = 10;
- case AV_PIX_FMT_GBRP12:
- if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
- s->bits_per_raw_sample = 12;
- case AV_PIX_FMT_GBRP14:
- if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
- s->bits_per_raw_sample = 14;
- else if (!s->bits_per_raw_sample)
- s->bits_per_raw_sample = avctx->bits_per_raw_sample;
- s->colorspace = 1;
- s->chroma_planes = 1;
- s->version = FFMAX(s->version, 1);
- break;
- default:
- av_log(avctx, AV_LOG_ERROR, "format not supported\n");
- return AVERROR_INVALIDDATA;
- }
- if (s->transparency) {
- av_log(avctx, AV_LOG_WARNING, "Storing alpha plane, this will require a recent FFV1 decoder to playback!\n");
- }
- if (avctx->context_model > 1U) {
- av_log(avctx, AV_LOG_ERROR, "Invalid context model %d, valid values are 0 and 1\n", avctx->context_model);
- return AVERROR(EINVAL);
- }
+ if (avctx->codec->decode && s->picture.data[0])
+ avctx->release_buffer(avctx, &s->picture);
+ if (avctx->codec->decode && s->last_picture.data[0])
+ avctx->release_buffer(avctx, &s->last_picture);
- if (s->ac > 1)
- for (i = 1; i < 256; i++)
- s->state_transition[i] = ver2_state[i];
+ for (j = 0; j < s->slice_count; j++) {
+ FFV1Context *fs = s->slice_context[j];
+ for (i = 0; i < s->plane_count; i++) {
+ PlaneContext *p = &fs->plane[i];
- for (i = 0; i < 256; i++) {
- s->quant_table_count = 2;
- if (s->bits_per_raw_sample <= 8) {
- s->quant_tables[0][0][i]= quant11[i];
- s->quant_tables[0][1][i]= 11*quant11[i];
- s->quant_tables[0][2][i]= 11*11*quant11[i];
- s->quant_tables[1][0][i]= quant11[i];
- s->quant_tables[1][1][i]= 11*quant11[i];
- s->quant_tables[1][2][i]= 11*11*quant5 [i];
- s->quant_tables[1][3][i]= 5*11*11*quant5 [i];
- s->quant_tables[1][4][i]= 5*5*11*11*quant5 [i];
- } else {
- s->quant_tables[0][0][i]= quant9_10bit[i];
- s->quant_tables[0][1][i]= 11*quant9_10bit[i];
- s->quant_tables[0][2][i]= 11*11*quant9_10bit[i];
- s->quant_tables[1][0][i]= quant9_10bit[i];
- s->quant_tables[1][1][i]= 11*quant9_10bit[i];
- s->quant_tables[1][2][i]= 11*11*quant5_10bit[i];
- s->quant_tables[1][3][i]= 5*11*11*quant5_10bit[i];
- s->quant_tables[1][4][i]= 5*5*11*11*quant5_10bit[i];
+ av_freep(&p->state);
+ av_freep(&p->vlc_state);
}
+ av_freep(&fs->sample_buffer);
}
- s->context_count[0] = (11 * 11 * 11 + 1) / 2;
- s->context_count[1] = (11 * 11 * 5 * 5 * 5 + 1) / 2;
- memcpy(s->quant_table, s->quant_tables[avctx->context_model],
- sizeof(s->quant_table));
-
- for (i = 0; i < s->plane_count; i++) {
- PlaneContext *const p = &s->plane[i];
-
- memcpy(p->quant_table, s->quant_table, sizeof(p->quant_table));
- p->quant_table_index = avctx->context_model;
- p->context_count = s->context_count[p->quant_table_index];
- }
-
- if (allocate_initial_states(s) < 0)
- return AVERROR(ENOMEM);
-
- avctx->coded_frame = &s->picture;
- if (!s->transparency)
- s->plane_count = 2;
- avcodec_get_chroma_sub_sample(avctx->pix_fmt, &s->chroma_h_shift, &s->chroma_v_shift);
- s->picture_number = 0;
- if (avctx->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
- for (i = 0; i < s->quant_table_count; i++) {
- s->rc_stat2[i] = av_mallocz(s->context_count[i] *
- sizeof(*s->rc_stat2[i]));
- if (!s->rc_stat2[i])
- return AVERROR(ENOMEM);
+ av_freep(&avctx->stats_out);
+ for (j = 0; j < s->quant_table_count; j++) {
+ av_freep(&s->initial_states[j]);
+ for (i = 0; i < s->slice_count; i++) {
+ FFV1Context *sf = s->slice_context[i];
+ av_freep(&sf->rc_stat2[j]);
}
+ av_freep(&s->rc_stat2[j]);
}
- if (avctx->stats_in) {
- char *p = avctx->stats_in;
- uint8_t best_state[256][256];
- int gob_count = 0;
- char *next;
- av_assert0(s->version >= 2);
-
- for (;;) {
- for (j = 0; j < 256; j++)
- for (i = 0; i < 2; i++) {
- s->rc_stat[j][i] = strtol(p, &next, 0);
- if (next == p) {
- av_log(avctx, AV_LOG_ERROR,
- "2Pass file invalid at %d %d [%s]\n", j, i, p);
- return -1;
- }
- p = next;
- }
- for (i = 0; i < s->quant_table_count; i++)
- for (j = 0; j < s->context_count[i]; j++) {
- for (k = 0; k < 32; k++)
- for (m = 0; m < 2; m++) {
- s->rc_stat2[i][j][k][m] = strtol(p, &next, 0);
- if (next == p) {
- av_log(avctx, AV_LOG_ERROR,
- "2Pass file invalid at %d %d %d %d [%s]\n",
- i, j, k, m, p);
- return AVERROR_INVALIDDATA;
- }
- p = next;
- }
- }
- gob_count = strtol(p, &next, 0);
- if (next == p || gob_count <= 0) {
- av_log(avctx, AV_LOG_ERROR, "2Pass file invalid\n");
- return AVERROR_INVALIDDATA;
- }
- p = next;
- while (*p == '\n' || *p == ' ')
- p++;
- if (p[0] == 0)
- break;
- }
- sort_stt(s, s->state_transition);
-
- find_best_state(best_state, s->state_transition);
-
- for (i = 0; i < s->quant_table_count; i++) {
- for (j = 0; j < s->context_count[i]; j++)
- for (k = 0; k < 32; k++) {
- double p = 128;
- if (s->rc_stat2[i][j][k][0] + s->rc_stat2[i][j][k][1]) {
- p = 256.0 * s->rc_stat2[i][j][k][1] /
- (s->rc_stat2[i][j][k][0] + s->rc_stat2[i][j][k][1]);
- }
- s->initial_states[i][j][k] =
- best_state[av_clip(round(p), 1, 255)][av_clip((s->rc_stat2[i][j][k][0] +
- s->rc_stat2[i][j][k][1]) /
- gob_count, 0, 255)];
- }
- }
- }
-
- if (s->version > 1) {
- for (s->num_v_slices = 2; s->num_v_slices < 9; s->num_v_slices++) {
- for (s->num_h_slices = s->num_v_slices; s->num_h_slices < 2*s->num_v_slices; s->num_h_slices++) {
- if (avctx->slices == s->num_h_slices * s->num_v_slices && avctx->slices <= 64 || !avctx->slices)
- goto slices_ok;
- }
- }
- av_log(avctx, AV_LOG_ERROR, "Unsupported number %d of slices requested, please specify a supported number with -slices (ex:4,6,9,12,16, ...)\n", avctx->slices);
- return -1;
- slices_ok:
- write_extra_header(s);
- }
-
- if (init_slice_contexts(s) < 0)
- return -1;
- if (init_slices_state(s) < 0)
- return -1;
-
-#define STATS_OUT_SIZE 1024 * 1024 * 6
- if (avctx->flags & CODEC_FLAG_PASS1) {
- avctx->stats_out = av_mallocz(STATS_OUT_SIZE);
- for (i = 0; i < s->quant_table_count; i++)
- for (j = 0; j < s->slice_count; j++) {
- FFV1Context *sf = s->slice_context[j];
- av_assert0(!sf->rc_stat2[i]);
- sf->rc_stat2[i] = av_mallocz(s->context_count[i] *
- sizeof(*sf->rc_stat2[i]));
- if (!sf->rc_stat2[i])
- return AVERROR(ENOMEM);
- }
- }
-
- return 0;
-}
-
-#endif /* CONFIG_FFV1_ENCODER */
-
-
-static void clear_slice_state(FFV1Context *f, FFV1Context *fs)
-{
- int i, j;
-
- for (i = 0; i < f->plane_count; i++) {
- PlaneContext *p = &fs->plane[i];
-
- p->interlace_bit_state[0] = 128;
- p->interlace_bit_state[1] = 128;
-
- if (fs->ac) {
- if (f->initial_states[p->quant_table_index]) {
- memcpy(p->state, f->initial_states[p->quant_table_index],
- CONTEXT_SIZE * p->context_count);
- } else
- memset(p->state, 128, CONTEXT_SIZE * p->context_count);
- } else {
- for (j = 0; j < p->context_count; j++) {
- p->vlc_state[j].drift = 0;
- p->vlc_state[j].error_sum = 4; // FFMAX((RANGE + 32)/64, 2);
- p->vlc_state[j].bias = 0;
- p->vlc_state[j].count = 1;
- }
- }
- }
-}
-
-#if CONFIG_FFV1_ENCODER
-
-static void encode_slice_header(FFV1Context *f, FFV1Context *fs)
-{
- RangeCoder *c = &fs->c;
- uint8_t state[CONTEXT_SIZE];
- int j;
- memset(state, 128, sizeof(state));
-
- put_symbol(c, state, (fs->slice_x +1)*f->num_h_slices / f->width , 0);
- put_symbol(c, state, (fs->slice_y +1)*f->num_v_slices / f->height , 0);
- put_symbol(c, state, (fs->slice_width +1)*f->num_h_slices / f->width -1, 0);
- put_symbol(c, state, (fs->slice_height+1)*f->num_v_slices / f->height-1, 0);
- for (j=0; j<f->plane_count; j++) {
- put_symbol(c, state, f->plane[j].quant_table_index, 0);
- av_assert0(f->plane[j].quant_table_index == f->avctx->context_model);
- }
- if (!f->picture.interlaced_frame) put_symbol(c, state, 3, 0);
- else put_symbol(c, state, 1 + !f->picture.top_field_first, 0);
- put_symbol(c, state, f->picture.sample_aspect_ratio.num, 0);
- put_symbol(c, state, f->picture.sample_aspect_ratio.den, 0);
-}
-
-static int encode_slice(AVCodecContext *c, void *arg)
-{
- FFV1Context *fs = *(void **)arg;
- FFV1Context *f = fs->avctx->priv_data;
- int width = fs->slice_width;
- int height = fs->slice_height;
- int x = fs->slice_x;
- int y = fs->slice_y;
- AVFrame *const p = &f->picture;
- const int ps = av_pix_fmt_desc_get(c->pix_fmt)->comp[0].step_minus1 + 1;
-
- if (p->key_frame)
- clear_slice_state(f, fs);
- if (f->version > 2) {
- encode_slice_header(f, fs);
- }
- if (!fs->ac) {
- if (f->version > 2)
- put_rac(&fs->c, (uint8_t[]) {129}, 0);
- fs->ac_byte_count = f->version > 2 || (!x&&!y) ? ff_rac_terminate(&fs->c) : 0;
- init_put_bits(&fs->pb, fs->c.bytestream_start + fs->ac_byte_count, fs->c.bytestream_end - fs->c.bytestream_start - fs->ac_byte_count);
- }
-
- if (f->colorspace == 0) {
- const int chroma_width = -((-width) >> f->chroma_h_shift);
- const int chroma_height = -((-height) >> f->chroma_v_shift);
- const int cx = x >> f->chroma_h_shift;
- const int cy = y >> f->chroma_v_shift;
-
- encode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0);
-
- if (f->chroma_planes) {
- encode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1);
- encode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1);
- }
- if (fs->transparency)
- encode_plane(fs, p->data[3] + ps*x + y*p->linesize[3], width, height, p->linesize[3], 2);
- } else {
- uint8_t *planes[3] = {p->data[0] + ps*x + y*p->linesize[0],
- p->data[1] + ps*x + y*p->linesize[1],
- p->data[2] + ps*x + y*p->linesize[2]};
- encode_rgb_frame(fs, planes, width, height, p->linesize);
- }
- emms_c();
-
- return 0;
-}
-
-static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
- const AVFrame *pict, int *got_packet)
-{
- FFV1Context *f = avctx->priv_data;
- RangeCoder *const c = &f->slice_context[0]->c;
- AVFrame *const p = &f->picture;
- int used_count = 0;
- uint8_t keystate = 128;
- uint8_t *buf_p;
- int i, ret;
-
- if ((ret = ff_alloc_packet2(avctx, pkt, avctx->width*avctx->height*((8*2+1+1)*4)/8
- + FF_MIN_BUFFER_SIZE)) < 0)
- return ret;
-
- ff_init_range_encoder(c, pkt->data, pkt->size);
- ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
-
- *p = *pict;
- p->pict_type = AV_PICTURE_TYPE_I;
-
- if (avctx->gop_size == 0 || f->picture_number % avctx->gop_size == 0) {
- put_rac(c, &keystate, 1);
- p->key_frame = 1;
- f->gob_count++;
- write_header(f);
- } else {
- put_rac(c, &keystate, 0);
- p->key_frame = 0;
- }
-
- if (f->ac > 1) {
- int i;
- for (i = 1; i < 256; i++) {
- c->one_state[i] = f->state_transition[i];
- c->zero_state[256 - i] = 256 - c->one_state[i];
- }
- }
-
- for (i = 1; i < f->slice_count; i++) {
- FFV1Context *fs = f->slice_context[i];
- uint8_t *start = pkt->data + (pkt->size - used_count) * (int64_t)i / f->slice_count;
- int len = pkt->size / f->slice_count;
- ff_init_range_encoder(&fs->c, start, len);
- }
- avctx->execute(avctx, encode_slice, &f->slice_context[0], NULL,
- f->slice_count, sizeof(void *));
-
- buf_p = pkt->data;
- for (i = 0; i < f->slice_count; i++) {
- FFV1Context *fs = f->slice_context[i];
- int bytes;
-
- if (fs->ac) {
- uint8_t state=129;
- put_rac(&fs->c, &state, 0);
- bytes = ff_rac_terminate(&fs->c);
- } else {
- flush_put_bits(&fs->pb); // FIXME: nicer padding
- bytes = fs->ac_byte_count + (put_bits_count(&fs->pb) + 7)/8;
- }
- if (i > 0 || f->version > 2) {
- av_assert0(bytes < pkt->size / f->slice_count);
- memmove(buf_p, fs->c.bytestream_start, bytes);
- av_assert0(bytes < (1 << 24));
- AV_WB24(buf_p + bytes, bytes);
- bytes += 3;
- }
- if (f->ec) {
- unsigned v;
- buf_p[bytes++] = 0;
- v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, buf_p, bytes);
- AV_WL32(buf_p + bytes, v); bytes += 4;
- }
- buf_p += bytes;
- }
-
- if ((avctx->flags & CODEC_FLAG_PASS1) && (f->picture_number & 31) == 0) {
- int j, k, m;
- char *p = avctx->stats_out;
- char *end = p + STATS_OUT_SIZE;
-
- memset(f->rc_stat, 0, sizeof(f->rc_stat));
- for (i = 0; i < f->quant_table_count; i++)
- memset(f->rc_stat2[i], 0, f->context_count[i] * sizeof(*f->rc_stat2[i]));
-
- for (j = 0; j < f->slice_count; j++) {
- FFV1Context *fs = f->slice_context[j];
- for (i = 0; i < 256; i++) {
- f->rc_stat[i][0] += fs->rc_stat[i][0];
- f->rc_stat[i][1] += fs->rc_stat[i][1];
- }
- for (i = 0; i < f->quant_table_count; i++) {
- for (k = 0; k < f->context_count[i]; k++)
- for (m = 0; m < 32; m++) {
- f->rc_stat2[i][k][m][0] += fs->rc_stat2[i][k][m][0];
- f->rc_stat2[i][k][m][1] += fs->rc_stat2[i][k][m][1];
- }
- }
- }
-
- for (j = 0; j < 256; j++) {
- snprintf(p, end - p, "%" PRIu64 " %" PRIu64 " ",
- f->rc_stat[j][0], f->rc_stat[j][1]);
- p += strlen(p);
- }
- snprintf(p, end - p, "\n");
-
- for (i = 0; i < f->quant_table_count; i++) {
- for (j = 0; j < f->context_count[i]; j++)
- for (m = 0; m < 32; m++) {
- snprintf(p, end - p, "%" PRIu64 " %" PRIu64 " ",
- f->rc_stat2[i][j][m][0], f->rc_stat2[i][j][m][1]);
- p += strlen(p);
- }
- }
- snprintf(p, end - p, "%d\n", f->gob_count);
- } else if (avctx->flags & CODEC_FLAG_PASS1)
- avctx->stats_out[0] = '\0';
-
- f->picture_number++;
- pkt->size = buf_p - pkt->data;
- pkt->flags |= AV_PKT_FLAG_KEY * p->key_frame;
- *got_packet = 1;
-
- return 0;
-}
-
-#endif /* CONFIG_FFV1_ENCODER */
-
-static av_cold int common_end(AVCodecContext *avctx)
-{
- FFV1Context *s = avctx->priv_data;
- int i, j;
-
- if (avctx->codec->decode && s->picture.data[0])
- avctx->release_buffer(avctx, &s->picture);
- if (avctx->codec->decode && s->last_picture.data[0])
- avctx->release_buffer(avctx, &s->last_picture);
-
- for (j = 0; j < s->slice_count; j++) {
- FFV1Context *fs = s->slice_context[j];
- for (i = 0; i < s->plane_count; i++) {
- PlaneContext *p = &fs->plane[i];
-
- av_freep(&p->state);
- av_freep(&p->vlc_state);
- }
- av_freep(&fs->sample_buffer);
- }
-
- av_freep(&avctx->stats_out);
- for (j = 0; j < s->quant_table_count; j++) {
- av_freep(&s->initial_states[j]);
- for (i = 0; i < s->slice_count; i++) {
- FFV1Context *sf = s->slice_context[i];
- av_freep(&sf->rc_stat2[j]);
- }
- av_freep(&s->rc_stat2[j]);
- }
-
- for (i = 0; i < s->slice_count; i++)
- av_freep(&s->slice_context[i]);
-
- return 0;
-}
-
-static av_always_inline void decode_line(FFV1Context *s, int w,
- int16_t *sample[2],
- int plane_index, int bits)
-{
- PlaneContext *const p = &s->plane[plane_index];
- RangeCoder *const c = &s->c;
- int x;
- int run_count = 0;
- int run_mode = 0;
- int run_index = s->run_index;
-
- for (x = 0; x < w; x++) {
- int diff, context, sign;
-
- context = get_context(p, sample[1] + x, sample[0] + x, sample[1] + x);
- if (context < 0) {
- context = -context;
- sign = 1;
- } else
- sign = 0;
-
- av_assert2(context < p->context_count);
-
- if (s->ac) {
- diff = get_symbol_inline(c, p->state[context], 1);
- } else {
- if (context == 0 && run_mode == 0)
- run_mode = 1;
-
- if (run_mode) {
- if (run_count == 0 && run_mode == 1) {
- if (get_bits1(&s->gb)) {
- run_count = 1 << ff_log2_run[run_index];
- if (x + run_count <= w)
- run_index++;
- } else {
- if (ff_log2_run[run_index])
- run_count = get_bits(&s->gb, ff_log2_run[run_index]);
- else
- run_count = 0;
- if (run_index)
- run_index--;
- run_mode = 2;
- }
- }
- run_count--;
- if (run_count < 0) {
- run_mode = 0;
- run_count = 0;
- diff = get_vlc_symbol(&s->gb, &p->vlc_state[context],
- bits);
- if (diff >= 0)
- diff++;
- } else
- diff = 0;
- } else
- diff = get_vlc_symbol(&s->gb, &p->vlc_state[context], bits);
-
- av_dlog(s->avctx, "count:%d index:%d, mode:%d, x:%d pos:%d\n",
- run_count, run_index, run_mode, x, get_bits_count(&s->gb));
- }
-
- if (sign)
- diff = -diff;
-
- sample[1][x] = (predict(sample[1] + x, sample[0] + x) + diff) &
- ((1 << bits) - 1);
- }
- s->run_index = run_index;
-}
-
-static void decode_plane(FFV1Context *s, uint8_t *src,
- int w, int h, int stride, int plane_index)
-{
- int x, y;
- int16_t *sample[2];
- sample[0] = s->sample_buffer + 3;
- sample[1] = s->sample_buffer + w + 6 + 3;
-
- s->run_index = 0;
-
- memset(s->sample_buffer, 0, 2 * (w + 6) * sizeof(*s->sample_buffer));
-
- for (y = 0; y < h; y++) {
- int16_t *temp = sample[0]; // FIXME: try a normal buffer
-
- sample[0] = sample[1];
- sample[1] = temp;
-
- sample[1][-1] = sample[0][0];
- sample[0][w] = sample[0][w - 1];
-
-// { START_TIMER
- if (s->avctx->bits_per_raw_sample <= 8) {
- decode_line(s, w, sample, plane_index, 8);
- for (x = 0; x < w; x++)
- src[x + stride * y] = sample[1][x];
- } else {
- decode_line(s, w, sample, plane_index, s->avctx->bits_per_raw_sample);
- if (s->packed_at_lsb) {
- for (x = 0; x < w; x++) {
- ((uint16_t*)(src + stride*y))[x] = sample[1][x];
- }
- } else {
- for (x = 0; x < w; x++) {
- ((uint16_t*)(src + stride*y))[x] = sample[1][x] << (16 - s->avctx->bits_per_raw_sample);
- }
- }
- }
-// STOP_TIMER("decode-line") }
- }
-}
-
-static void decode_rgb_frame(FFV1Context *s, uint8_t *src[3], int w, int h, int stride[3])
-{
- int x, y, p;
- int16_t *sample[4][2];
- int lbd = s->avctx->bits_per_raw_sample <= 8;
- int bits = s->avctx->bits_per_raw_sample > 0 ? s->avctx->bits_per_raw_sample : 8;
- int offset = 1 << bits;
- for (x = 0; x < 4; x++) {
- sample[x][0] = s->sample_buffer + x * 2 * (w + 6) + 3;
- sample[x][1] = s->sample_buffer + (x * 2 + 1) * (w + 6) + 3;
- }
-
- s->run_index = 0;
-
- memset(s->sample_buffer, 0, 8*(w+6)*sizeof(*s->sample_buffer));
-
- for (y = 0; y < h; y++) {
- for (p = 0; p < 3 + s->transparency; p++) {
- int16_t *temp = sample[p][0]; // FIXME: try a normal buffer
-
- sample[p][0] = sample[p][1];
- sample[p][1] = temp;
-
- sample[p][1][-1]= sample[p][0][0 ];
- sample[p][0][ w]= sample[p][0][w-1];
- if (lbd)
- decode_line(s, w, sample[p], (p+1)/2, 9);
- else
- decode_line(s, w, sample[p], (p+1)/2, bits+1);
- }
- for (x = 0; x < w; x++) {
- int g = sample[0][1][x];
- int b = sample[1][1][x];
- int r = sample[2][1][x];
- int a = sample[3][1][x];
-
- b -= offset;
- r -= offset;
- g -= (b + r) >> 2;
- b += g;
- r += g;
-
- if (lbd)
- *((uint32_t*)(src[0] + x*4 + stride[0]*y)) = b + (g<<8) + (r<<16) + (a<<24);
- else {
- *((uint16_t*)(src[0] + x*2 + stride[0]*y)) = b;
- *((uint16_t*)(src[1] + x*2 + stride[1]*y)) = g;
- *((uint16_t*)(src[2] + x*2 + stride[2]*y)) = r;
- }
- }
- }
-}
-
-static int decode_slice_header(FFV1Context *f, FFV1Context *fs)
-{
- RangeCoder *c = &fs->c;
- uint8_t state[CONTEXT_SIZE];
- unsigned ps, i, context_count;
- memset(state, 128, sizeof(state));
-
- av_assert0(f->version > 2);
-
- fs->slice_x = get_symbol(c, state, 0) * f->width ;
- fs->slice_y = get_symbol(c, state, 0) * f->height;
- fs->slice_width = (get_symbol(c, state, 0) + 1) * f->width + fs->slice_x;
- fs->slice_height = (get_symbol(c, state, 0) + 1) * f->height + fs->slice_y;
-
- fs->slice_x /= f->num_h_slices;
- fs->slice_y /= f->num_v_slices;
- fs->slice_width = fs->slice_width /f->num_h_slices - fs->slice_x;
- fs->slice_height = fs->slice_height/f->num_v_slices - fs->slice_y;
- if ((unsigned)fs->slice_width > f->width || (unsigned)fs->slice_height > f->height)
- return -1;
- if ( (unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width
- || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)
- return -1;
-
- for (i = 0; i < f->plane_count; i++) {
- PlaneContext * const p = &fs->plane[i];
- int idx = get_symbol(c, state, 0);
- if (idx > (unsigned)f->quant_table_count) {
- av_log(f->avctx, AV_LOG_ERROR, "quant_table_index out of range\n");
- return -1;
- }
- p->quant_table_index = idx;
- memcpy(p->quant_table, f->quant_tables[idx], sizeof(p->quant_table));
- context_count = f->context_count[idx];
-
- if (p->context_count < context_count) {
- av_freep(&p->state);
- av_freep(&p->vlc_state);
- }
- p->context_count = context_count;
- }
-
- ps = get_symbol(c, state, 0);
- if (ps == 1) {
- f->picture.interlaced_frame = 1;
- f->picture.top_field_first = 1;
- } else if (ps == 2) {
- f->picture.interlaced_frame = 1;
- f->picture.top_field_first = 0;
- } else if (ps == 3) {
- f->picture.interlaced_frame = 0;
- }
- f->picture.sample_aspect_ratio.num = get_symbol(c, state, 0);
- f->picture.sample_aspect_ratio.den = get_symbol(c, state, 0);
+ for (i = 0; i < s->slice_count; i++)
+ av_freep(&s->slice_context[i]);
return 0;
}
-
-static int decode_slice(AVCodecContext *c, void *arg)
-{
- FFV1Context *fs = *(void **)arg;
- FFV1Context *f = fs->avctx->priv_data;
- int width, height, x, y;
- const int ps = av_pix_fmt_desc_get(c->pix_fmt)->comp[0].step_minus1 + 1;
- AVFrame * const p = &f->picture;
-
- if (f->version > 2) {
- if (init_slice_state(f, fs) < 0)
- return AVERROR(ENOMEM);
- if (decode_slice_header(f, fs) < 0) {
- fs->slice_damaged = 1;
- return AVERROR_INVALIDDATA;
- }
- }
- if (init_slice_state(f, fs) < 0)
- return AVERROR(ENOMEM);
- if (f->picture.key_frame)
- clear_slice_state(f, fs);
- width = fs->slice_width;
- height= fs->slice_height;
- x= fs->slice_x;
- y= fs->slice_y;
-
- if (!fs->ac) {
- if (f->version == 3 && f->minor_version > 1 || f->version > 3)
- get_rac(&fs->c, (uint8_t[]) {129});
- fs->ac_byte_count = f->version > 2 || (!x&&!y) ? fs->c.bytestream - fs->c.bytestream_start - 1 : 0;
- init_get_bits(&fs->gb,
- fs->c.bytestream_start + fs->ac_byte_count,
- (fs->c.bytestream_end - fs->c.bytestream_start - fs->ac_byte_count) * 8);
- }
-
- av_assert1(width && height);
- if (f->colorspace == 0) {
- const int chroma_width = -((-width) >> f->chroma_h_shift);
- const int chroma_height = -((-height) >> f->chroma_v_shift);
- const int cx = x >> f->chroma_h_shift;
- const int cy = y >> f->chroma_v_shift;
- decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0);
-
- if (f->chroma_planes) {
- decode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1);
- decode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1);
- }
- if (fs->transparency)
- decode_plane(fs, p->data[3] + ps*x + y*p->linesize[3], width, height, p->linesize[3], 2);
- } else {
- uint8_t *planes[3] = {p->data[0] + ps*x + y*p->linesize[0],
- p->data[1] + ps*x + y*p->linesize[1],
- p->data[2] + ps*x + y*p->linesize[2]};
- decode_rgb_frame(fs, planes, width, height, p->linesize);
- }
- if (fs->ac && f->version > 2) {
- int v;
- get_rac(&fs->c, (uint8_t[]) {129});
- v = fs->c.bytestream_end - fs->c.bytestream - 2 - 5*f->ec;
- if (v) {
- av_log(f->avctx, AV_LOG_ERROR, "bytestream end mismatching by %d\n", v);
- fs->slice_damaged = 1;
- }
- }
-
- emms_c();
-
- return 0;
-}
-
-static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale)
-{
- int v;
- int i = 0;
- uint8_t state[CONTEXT_SIZE];
-
- memset(state, 128, sizeof(state));
-
- for (v = 0; i < 128; v++) {
- unsigned len = get_symbol(c, state, 0) + 1;
-
- if (len > 128 - i)
- return -1;
-
- while (len--) {
- quant_table[i] = scale * v;
- i++;
- }
- }
-
- for (i = 1; i < 128; i++)
- quant_table[256 - i] = -quant_table[i];
- quant_table[128] = -quant_table[127];
-
- return 2 * v - 1;
-}
-
-static int read_quant_tables(RangeCoder *c,
- int16_t quant_table[MAX_CONTEXT_INPUTS][256])
-{
- int i;
- int context_count = 1;
-
- for (i = 0; i < 5; i++) {
- context_count *= read_quant_table(c, quant_table[i], context_count);
- if (context_count > 32768U) {
- return -1;
- }
- }
- return (context_count + 1) / 2;
-}
-
-static int read_extra_header(FFV1Context *f)
-{
- RangeCoder *const c = &f->c;
- uint8_t state[CONTEXT_SIZE];
- int i, j, k;
- uint8_t state2[32][CONTEXT_SIZE];
-
- memset(state2, 128, sizeof(state2));
- memset(state, 128, sizeof(state));
-
- ff_init_range_decoder(c, f->avctx->extradata, f->avctx->extradata_size);
- ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
-
- f->version = get_symbol(c, state, 0);
- if (f->version > 2) {
- c->bytestream_end -= 4;
- f->minor_version = get_symbol(c, state, 0);
- }
- f->ac = f->avctx->coder_type = get_symbol(c, state, 0);
- if (f->ac > 1)
- for (i = 1; i < 256; i++)
- f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i];
-
- f->colorspace = get_symbol(c, state, 0); // YUV cs type
- f->avctx->bits_per_raw_sample = get_symbol(c, state, 0);
- f->chroma_planes = get_rac(c, state);
- f->chroma_h_shift = get_symbol(c, state, 0);
- f->chroma_v_shift = get_symbol(c, state, 0);
- f->transparency = get_rac(c, state);
- f->plane_count = 2 + f->transparency;
- f->num_h_slices = 1 + get_symbol(c, state, 0);
- f->num_v_slices = 1 + get_symbol(c, state, 0);
-
- if (f->num_h_slices > (unsigned)f->width ||
- f->num_v_slices > (unsigned)f->height) {
- av_log(f->avctx, AV_LOG_ERROR, "too many slices\n");
- return -1;
- }
-
- f->quant_table_count = get_symbol(c, state, 0);
-
- if (f->quant_table_count > (unsigned)MAX_QUANT_TABLES)
- return -1;
-
- for (i = 0; i < f->quant_table_count; i++) {
- f->context_count[i] = read_quant_tables(c, f->quant_tables[i]);
- if (f->context_count[i] < 0) {
- av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
- return -1;
- }
- }
-
- if (allocate_initial_states(f) < 0)
- return AVERROR(ENOMEM);
-
- for (i = 0; i < f->quant_table_count; i++)
- if (get_rac(c, state))
- for (j = 0; j < f->context_count[i]; j++)
- for (k = 0; k < CONTEXT_SIZE; k++) {
- int pred = j ? f->initial_states[i][j - 1][k] : 128;
- f->initial_states[i][j][k] =
- (pred + get_symbol(c, state2[k], 1)) & 0xFF;
- }
-
- if (f->version > 2) {
- f->ec = get_symbol(c, state, 0);
- }
-
- if (f->version > 2) {
- unsigned v;
- v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, f->avctx->extradata, f->avctx->extradata_size);
- if (v) {
- av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!\n", v);
- return AVERROR_INVALIDDATA;
- }
- }
-
- return 0;
-}
-
-static int read_header(FFV1Context *f)
-{
- uint8_t state[CONTEXT_SIZE];
- int i, j, context_count = -1; //-1 to avoid warning
- RangeCoder *const c = &f->slice_context[0]->c;
-
- memset(state, 128, sizeof(state));
-
- if (f->version < 2) {
- unsigned v= get_symbol(c, state, 0);
- if (v >= 2) {
- av_log(f->avctx, AV_LOG_ERROR, "invalid version %d in ver01 header\n", v);
- return AVERROR_INVALIDDATA;
- }
- f->version = v;
- f->ac = f->avctx->coder_type = get_symbol(c, state, 0);
- if (f->ac > 1)
- for (i = 1; i < 256; i++)
- f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i];
- f->colorspace = get_symbol(c, state, 0); // YUV cs type
- if (f->version > 0)
- f->avctx->bits_per_raw_sample = get_symbol(c, state, 0);
- f->chroma_planes = get_rac(c, state);
- f->chroma_h_shift = get_symbol(c, state, 0);
- f->chroma_v_shift = get_symbol(c, state, 0);
- f->transparency = get_rac(c, state);
- f->plane_count = 2 + f->transparency;
- }
-
- if (f->colorspace == 0) {
- if (!f->transparency && !f->chroma_planes) {
- if (f->avctx->bits_per_raw_sample <= 8)
- f->avctx->pix_fmt = AV_PIX_FMT_GRAY8;
- else
- f->avctx->pix_fmt = AV_PIX_FMT_GRAY16;
- } else if (f->avctx->bits_per_raw_sample<=8 && !f->transparency) {
- switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
- case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P; break;
- case 0x01: f->avctx->pix_fmt = AV_PIX_FMT_YUV440P; break;
- case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P; break;
- case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P; break;
- case 0x20: f->avctx->pix_fmt = AV_PIX_FMT_YUV411P; break;
- case 0x22: f->avctx->pix_fmt = AV_PIX_FMT_YUV410P; break;
- default:
- av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
- return -1;
- }
- } else if (f->avctx->bits_per_raw_sample <= 8 && f->transparency) {
- switch(16*f->chroma_h_shift + f->chroma_v_shift) {
- case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P; break;
- case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P; break;
- case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P; break;
- default:
- av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
- return -1;
- }
- } else if (f->avctx->bits_per_raw_sample == 9) {
- f->packed_at_lsb = 1;
- switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
- case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P9; break;
- case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P9; break;
- case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P9; break;
- default:
- av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
- return -1;
- }
- } else if (f->avctx->bits_per_raw_sample == 10) {
- f->packed_at_lsb = 1;
- switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
- case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P10; break;
- case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P10; break;
- case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P10; break;
- default:
- av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
- return -1;
- }
- } else {
- switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
- case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P16; break;
- case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P16; break;
- case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P16; break;
- default:
- av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
- return -1;
- }
- }
- } else if (f->colorspace == 1) {
- if (f->chroma_h_shift || f->chroma_v_shift) {
- av_log(f->avctx, AV_LOG_ERROR,
- "chroma subsampling not supported in this colorspace\n");
- return -1;
- }
- if ( f->avctx->bits_per_raw_sample == 9)
- f->avctx->pix_fmt = AV_PIX_FMT_GBRP9;
- else if (f->avctx->bits_per_raw_sample == 10)
- f->avctx->pix_fmt = AV_PIX_FMT_GBRP10;
- else if (f->avctx->bits_per_raw_sample == 12)
- f->avctx->pix_fmt = AV_PIX_FMT_GBRP12;
- else if (f->avctx->bits_per_raw_sample == 14)
- f->avctx->pix_fmt = AV_PIX_FMT_GBRP14;
- else
- if (f->transparency) f->avctx->pix_fmt = AV_PIX_FMT_RGB32;
- else f->avctx->pix_fmt = AV_PIX_FMT_0RGB32;
- } else {
- av_log(f->avctx, AV_LOG_ERROR, "colorspace not supported\n");
- return -1;
- }
-
- av_dlog(f->avctx, "%d %d %d\n",
- f->chroma_h_shift, f->chroma_v_shift, f->avctx->pix_fmt);
-
- if (f->version < 2) {
- context_count = read_quant_tables(c, f->quant_table);
- if (context_count < 0) {
- av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
- return -1;
- }
- } else if (f->version < 3) {
- f->slice_count = get_symbol(c, state, 0);
- } else {
- const uint8_t *p = c->bytestream_end;
- for (f->slice_count = 0; f->slice_count < MAX_SLICES && 3 < p - c->bytestream_start; f->slice_count++) {
- int trailer = 3 + 5*!!f->ec;
- int size = AV_RB24(p-trailer);
- if (size + trailer > p - c->bytestream_start)
- break;
- p -= size + trailer;
- }
- }
- if (f->slice_count > (unsigned)MAX_SLICES || f->slice_count <= 0) {
- av_log(f->avctx, AV_LOG_ERROR, "slice count %d is invalid\n", f->slice_count);
- return -1;
- }
-
- for (j = 0; j < f->slice_count; j++) {
- FFV1Context *fs = f->slice_context[j];
- fs->ac = f->ac;
- fs->packed_at_lsb = f->packed_at_lsb;
-
- fs->slice_damaged = 0;
-
- if (f->version == 2) {
- fs->slice_x = get_symbol(c, state, 0) * f->width ;
- fs->slice_y = get_symbol(c, state, 0) * f->height;
- fs->slice_width = (get_symbol(c, state, 0) + 1) * f->width + fs->slice_x;
- fs->slice_height = (get_symbol(c, state, 0) + 1) * f->height + fs->slice_y;
-
- fs->slice_x /= f->num_h_slices;
- fs->slice_y /= f->num_v_slices;
- fs->slice_width = fs->slice_width / f->num_h_slices - fs->slice_x;
- fs->slice_height = fs->slice_height / f->num_v_slices - fs->slice_y;
- if ((unsigned)fs->slice_width > f->width ||
- (unsigned)fs->slice_height > f->height)
- return -1;
- if ((unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width ||
- (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)
- return -1;
- }
-
- for (i = 0; i < f->plane_count; i++) {
- PlaneContext *const p = &fs->plane[i];
-
- if (f->version == 2) {
- int idx = get_symbol(c, state, 0);
- if (idx > (unsigned)f->quant_table_count) {
- av_log(f->avctx, AV_LOG_ERROR,
- "quant_table_index out of range\n");
- return -1;
- }
- p->quant_table_index = idx;
- memcpy(p->quant_table, f->quant_tables[idx],
- sizeof(p->quant_table));
- context_count = f->context_count[idx];
- } else {
- memcpy(p->quant_table, f->quant_table, sizeof(p->quant_table));
- }
-
- if (f->version <= 2) {
- av_assert0(context_count >= 0);
- if (p->context_count < context_count) {
- av_freep(&p->state);
- av_freep(&p->vlc_state);
- }
- p->context_count = context_count;
- }
- }
- }
- return 0;
-}
-
-static av_cold int decode_init(AVCodecContext *avctx)
-{
- FFV1Context *f = avctx->priv_data;
-
- common_init(avctx);
-
- if (avctx->extradata && read_extra_header(f) < 0)
- return -1;
-
- if (init_slice_contexts(f) < 0)
- return -1;
-
- return 0;
-}
-
-static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt)
-{
- const uint8_t *buf = avpkt->data;
- int buf_size = avpkt->size;
- FFV1Context *f = avctx->priv_data;
- RangeCoder *const c = &f->slice_context[0]->c;
- AVFrame *const p = &f->picture;
- int i;
- uint8_t keystate = 128;
- const uint8_t *buf_p;
-
- AVFrame *picture = data;
-
- /* release previously stored data */
- if (p->data[0])
- avctx->release_buffer(avctx, p);
-
- ff_init_range_decoder(c, buf, buf_size);
- ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
-
- p->pict_type = AV_PICTURE_TYPE_I; // FIXME: I vs. P
- if (get_rac(c, &keystate)) {
- p->key_frame = 1;
- f->key_frame_ok = 0;
- if (read_header(f) < 0)
- return -1;
- f->key_frame_ok = 1;
- } else {
- if (!f->key_frame_ok) {
- av_log(avctx, AV_LOG_ERROR, "Cant decode non keyframe without valid keyframe\n");
- return AVERROR_INVALIDDATA;
- }
- p->key_frame= 0;
- }
-
- p->reference = 3; //for error concealment
- if (avctx->get_buffer(avctx, p) < 0) {
- av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
- return -1;
- }
-
- if (avctx->debug&FF_DEBUG_PICT_INFO)
- av_log(avctx, AV_LOG_DEBUG, "ver:%d keyframe:%d coder:%d ec:%d slices:%d bps:%d\n",
- f->version, p->key_frame, f->ac, f->ec, f->slice_count, f->avctx->bits_per_raw_sample);
-
- buf_p = buf + buf_size;
- for (i = f->slice_count - 1; i >= 0; i--) {
- FFV1Context *fs = f->slice_context[i];
- int trailer = 3 + 5*!!f->ec;
- int v;
-
- if (i || f->version>2) v = AV_RB24(buf_p-trailer)+trailer;
- else v = buf_p - c->bytestream_start;
- if (buf_p - c->bytestream_start < v) {
- av_log(avctx, AV_LOG_ERROR, "Slice pointer chain broken\n");
- return -1;
- }
- buf_p -= v;
-
- if (f->ec) {
- unsigned crc = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, buf_p, v);
- if (crc) {
- int64_t ts = avpkt->pts != AV_NOPTS_VALUE ? avpkt->pts : avpkt->dts;
- av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!", crc);
- if (ts != AV_NOPTS_VALUE && avctx->pkt_timebase.num) {
- av_log(f->avctx, AV_LOG_ERROR, "at %f seconds\n", ts*av_q2d(avctx->pkt_timebase));
- } else if (ts != AV_NOPTS_VALUE) {
- av_log(f->avctx, AV_LOG_ERROR, "at %"PRId64"\n", ts);
- } else {
- av_log(f->avctx, AV_LOG_ERROR, "\n");
- }
- fs->slice_damaged = 1;
- }
- }
-
- if (i) {
- ff_init_range_decoder(&fs->c, buf_p, v);
- } else
- fs->c.bytestream_end = (uint8_t *)(buf_p + v);
- }
-
- avctx->execute(avctx, decode_slice, &f->slice_context[0], NULL, f->slice_count, sizeof(void*));
-
- for (i=f->slice_count-1; i>=0; i--) {
- FFV1Context *fs= f->slice_context[i];
- int j;
- if (fs->slice_damaged && f->last_picture.data[0]) {
- uint8_t *dst[4], *src[4];
- for (j=0; j<4; j++) {
- int sh = (j==1 || j==2) ? f->chroma_h_shift : 0;
- int sv = (j==1 || j==2) ? f->chroma_v_shift : 0;
- dst[j] = f->picture .data[j] + f->picture .linesize[j]*
- (fs->slice_y>>sv) + (fs->slice_x>>sh);
- src[j] = f->last_picture.data[j] + f->last_picture.linesize[j]*
- (fs->slice_y>>sv) + (fs->slice_x>>sh);
- }
- av_image_copy(dst, f->picture.linesize, (const uint8_t **)src, f->last_picture.linesize,
- avctx->pix_fmt, fs->slice_width, fs->slice_height);
- }
- }
-
- f->picture_number++;
-
- *picture = *p;
- *data_size = sizeof(AVFrame);
-
- FFSWAP(AVFrame, f->picture, f->last_picture);
-
- return buf_size;
-}
-
-AVCodec ff_ffv1_decoder = {
- .name = "ffv1",
- .type = AVMEDIA_TYPE_VIDEO,
- .id = AV_CODEC_ID_FFV1,
- .priv_data_size = sizeof(FFV1Context),
- .init = decode_init,
- .close = common_end,
- .decode = decode_frame,
- .capabilities = CODEC_CAP_DR1 /*| CODEC_CAP_DRAW_HORIZ_BAND*/ |
- CODEC_CAP_SLICE_THREADS,
- .long_name = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
-};
-
-#if CONFIG_FFV1_ENCODER
-
-#define OFFSET(x) offsetof(FFV1Context, x)
-#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
-static const AVOption options[] = {
- { "slicecrc", "Protect slices with CRCs", OFFSET(ec), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 1, VE},
-{NULL}
-};
-
-static const AVClass class = {
- .class_name = "ffv1 encoder",
- .item_name = av_default_item_name,
- .option = options,
- .version = LIBAVUTIL_VERSION_INT,
-};
-
-static const AVCodecDefault ffv1_defaults[] = {
- { "coder", "-1" },
- { NULL },
-};
-
-AVCodec ff_ffv1_encoder = {
- .name = "ffv1",
- .type = AVMEDIA_TYPE_VIDEO,
- .id = AV_CODEC_ID_FFV1,
- .priv_data_size = sizeof(FFV1Context),
- .init = encode_init,
- .encode2 = encode_frame,
- .close = common_end,
- .capabilities = CODEC_CAP_SLICE_THREADS,
- .defaults = ffv1_defaults,
- .pix_fmts = (const enum AVPixelFormat[]) {
- AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV444P,
- AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV411P,
- AV_PIX_FMT_YUV410P, AV_PIX_FMT_0RGB32, AV_PIX_FMT_RGB32, AV_PIX_FMT_YUV420P16,
- AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16, AV_PIX_FMT_YUV444P9, AV_PIX_FMT_YUV422P9,
- AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
- AV_PIX_FMT_GRAY16, AV_PIX_FMT_GRAY8, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
- AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14,
- AV_PIX_FMT_NONE
- },
- .long_name = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
- .priv_class = &class,
-};
-#endif
--- /dev/null
+/*
+ * FFV1 decoder
+ *
+ * Copyright (c) 2003-2012 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * FF Video Codec 1 (a lossless codec) decoder
+ */
+
+#include "libavutil/avassert.h"
+#include "libavutil/crc.h"
+#include "libavutil/opt.h"
+#include "libavutil/imgutils.h"
+#include "libavutil/pixdesc.h"
+#include "libavutil/timer.h"
+#include "avcodec.h"
+#include "internal.h"
+#include "get_bits.h"
+#include "put_bits.h"
+#include "dsputil.h"
+#include "rangecoder.h"
+#include "golomb.h"
+#include "mathops.h"
+#include "ffv1.h"
+
+static inline av_flatten int get_symbol_inline(RangeCoder *c, uint8_t *state,
+ int is_signed)
+{
+ if (get_rac(c, state + 0))
+ return 0;
+ else {
+ int i, e, a;
+ e = 0;
+ while (get_rac(c, state + 1 + FFMIN(e, 9))) // 1..10
+ e++;
+
+ a = 1;
+ for (i = e - 1; i >= 0; i--)
+ a += a + get_rac(c, state + 22 + FFMIN(i, 9)); // 22..31
+
+ e = -(is_signed && get_rac(c, state + 11 + FFMIN(e, 10))); // 11..21
+ return (a ^ e) - e;
+ }
+}
+
+static av_noinline int get_symbol(RangeCoder *c, uint8_t *state, int is_signed)
+{
+ return get_symbol_inline(c, state, is_signed);
+}
+
+static inline int get_vlc_symbol(GetBitContext *gb, VlcState *const state,
+ int bits)
+{
+ int k, i, v, ret;
+
+ i = state->count;
+ k = 0;
+ while (i < state->error_sum) { // FIXME: optimize
+ k++;
+ i += i;
+ }
+
+ assert(k <= 8);
+
+ v = get_sr_golomb(gb, k, 12, bits);
+ av_dlog(NULL, "v:%d bias:%d error:%d drift:%d count:%d k:%d",
+ v, state->bias, state->error_sum, state->drift, state->count, k);
+
+#if 0 // JPEG LS
+ if (k == 0 && 2 * state->drift <= -state->count)
+ v ^= (-1);
+#else
+ v ^= ((2 * state->drift + state->count) >> 31);
+#endif
+
+ ret = fold(v + state->bias, bits);
+
+ update_vlc_state(state, v);
+
+ return ret;
+}
+
+static av_always_inline void decode_line(FFV1Context *s, int w,
+ int16_t *sample[2],
+ int plane_index, int bits)
+{
+ PlaneContext *const p = &s->plane[plane_index];
+ RangeCoder *const c = &s->c;
+ int x;
+ int run_count = 0;
+ int run_mode = 0;
+ int run_index = s->run_index;
+
+ for (x = 0; x < w; x++) {
+ int diff, context, sign;
+
+ context = get_context(p, sample[1] + x, sample[0] + x, sample[1] + x);
+ if (context < 0) {
+ context = -context;
+ sign = 1;
+ } else
+ sign = 0;
+
+ av_assert2(context < p->context_count);
+
+ if (s->ac) {
+ diff = get_symbol_inline(c, p->state[context], 1);
+ } else {
+ if (context == 0 && run_mode == 0)
+ run_mode = 1;
+
+ if (run_mode) {
+ if (run_count == 0 && run_mode == 1) {
+ if (get_bits1(&s->gb)) {
+ run_count = 1 << ff_log2_run[run_index];
+ if (x + run_count <= w)
+ run_index++;
+ } else {
+ if (ff_log2_run[run_index])
+ run_count = get_bits(&s->gb, ff_log2_run[run_index]);
+ else
+ run_count = 0;
+ if (run_index)
+ run_index--;
+ run_mode = 2;
+ }
+ }
+ run_count--;
+ if (run_count < 0) {
+ run_mode = 0;
+ run_count = 0;
+ diff = get_vlc_symbol(&s->gb, &p->vlc_state[context],
+ bits);
+ if (diff >= 0)
+ diff++;
+ } else
+ diff = 0;
+ } else
+ diff = get_vlc_symbol(&s->gb, &p->vlc_state[context], bits);
+
+ av_dlog(s->avctx, "count:%d index:%d, mode:%d, x:%d pos:%d\n",
+ run_count, run_index, run_mode, x, get_bits_count(&s->gb));
+ }
+
+ if (sign)
+ diff = -diff;
+
+ sample[1][x] = (predict(sample[1] + x, sample[0] + x) + diff) &
+ ((1 << bits) - 1);
+ }
+ s->run_index = run_index;
+}
+
+static void decode_plane(FFV1Context *s, uint8_t *src,
+ int w, int h, int stride, int plane_index)
+{
+ int x, y;
+ int16_t *sample[2];
+ sample[0] = s->sample_buffer + 3;
+ sample[1] = s->sample_buffer + w + 6 + 3;
+
+ s->run_index = 0;
+
+ memset(s->sample_buffer, 0, 2 * (w + 6) * sizeof(*s->sample_buffer));
+
+ for (y = 0; y < h; y++) {
+ int16_t *temp = sample[0]; // FIXME: try a normal buffer
+
+ sample[0] = sample[1];
+ sample[1] = temp;
+
+ sample[1][-1] = sample[0][0];
+ sample[0][w] = sample[0][w - 1];
+
+// { START_TIMER
+ if (s->avctx->bits_per_raw_sample <= 8) {
+ decode_line(s, w, sample, plane_index, 8);
+ for (x = 0; x < w; x++)
+ src[x + stride * y] = sample[1][x];
+ } else {
+ decode_line(s, w, sample, plane_index, s->avctx->bits_per_raw_sample);
+ if (s->packed_at_lsb) {
+ for (x = 0; x < w; x++) {
+ ((uint16_t*)(src + stride*y))[x] = sample[1][x];
+ }
+ } else {
+ for (x = 0; x < w; x++) {
+ ((uint16_t*)(src + stride*y))[x] = sample[1][x] << (16 - s->avctx->bits_per_raw_sample);
+ }
+ }
+ }
+// STOP_TIMER("decode-line") }
+ }
+}
+
+static void decode_rgb_frame(FFV1Context *s, uint8_t *src[3], int w, int h, int stride[3])
+{
+ int x, y, p;
+ int16_t *sample[4][2];
+ int lbd = s->avctx->bits_per_raw_sample <= 8;
+ int bits = s->avctx->bits_per_raw_sample > 0 ? s->avctx->bits_per_raw_sample : 8;
+ int offset = 1 << bits;
+ for (x = 0; x < 4; x++) {
+ sample[x][0] = s->sample_buffer + x * 2 * (w + 6) + 3;
+ sample[x][1] = s->sample_buffer + (x * 2 + 1) * (w + 6) + 3;
+ }
+
+ s->run_index = 0;
+
+ memset(s->sample_buffer, 0, 8*(w+6)*sizeof(*s->sample_buffer));
+
+ for (y = 0; y < h; y++) {
+ for (p = 0; p < 3 + s->transparency; p++) {
+ int16_t *temp = sample[p][0]; // FIXME: try a normal buffer
+
+ sample[p][0] = sample[p][1];
+ sample[p][1] = temp;
+
+ sample[p][1][-1]= sample[p][0][0 ];
+ sample[p][0][ w]= sample[p][0][w-1];
+ if (lbd)
+ decode_line(s, w, sample[p], (p+1)/2, 9);
+ else
+ decode_line(s, w, sample[p], (p+1)/2, bits+1);
+ }
+ for (x = 0; x < w; x++) {
+ int g = sample[0][1][x];
+ int b = sample[1][1][x];
+ int r = sample[2][1][x];
+ int a = sample[3][1][x];
+
+ b -= offset;
+ r -= offset;
+ g -= (b + r) >> 2;
+ b += g;
+ r += g;
+
+ if (lbd)
+ *((uint32_t*)(src[0] + x*4 + stride[0]*y)) = b + (g<<8) + (r<<16) + (a<<24);
+ else {
+ *((uint16_t*)(src[0] + x*2 + stride[0]*y)) = b;
+ *((uint16_t*)(src[1] + x*2 + stride[1]*y)) = g;
+ *((uint16_t*)(src[2] + x*2 + stride[2]*y)) = r;
+ }
+ }
+ }
+}
+
+static int decode_slice_header(FFV1Context *f, FFV1Context *fs)
+{
+ RangeCoder *c = &fs->c;
+ uint8_t state[CONTEXT_SIZE];
+ unsigned ps, i, context_count;
+ memset(state, 128, sizeof(state));
+
+ av_assert0(f->version > 2);
+
+ fs->slice_x = get_symbol(c, state, 0) * f->width ;
+ fs->slice_y = get_symbol(c, state, 0) * f->height;
+ fs->slice_width = (get_symbol(c, state, 0) + 1) * f->width + fs->slice_x;
+ fs->slice_height = (get_symbol(c, state, 0) + 1) * f->height + fs->slice_y;
+
+ fs->slice_x /= f->num_h_slices;
+ fs->slice_y /= f->num_v_slices;
+ fs->slice_width = fs->slice_width /f->num_h_slices - fs->slice_x;
+ fs->slice_height = fs->slice_height/f->num_v_slices - fs->slice_y;
+ if ((unsigned)fs->slice_width > f->width || (unsigned)fs->slice_height > f->height)
+ return -1;
+ if ( (unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width
+ || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)
+ return -1;
+
+ for (i = 0; i < f->plane_count; i++) {
+ PlaneContext * const p = &fs->plane[i];
+ int idx = get_symbol(c, state, 0);
+ if (idx > (unsigned)f->quant_table_count) {
+ av_log(f->avctx, AV_LOG_ERROR, "quant_table_index out of range\n");
+ return -1;
+ }
+ p->quant_table_index = idx;
+ memcpy(p->quant_table, f->quant_tables[idx], sizeof(p->quant_table));
+ context_count = f->context_count[idx];
+
+ if (p->context_count < context_count) {
+ av_freep(&p->state);
+ av_freep(&p->vlc_state);
+ }
+ p->context_count = context_count;
+ }
+
+ ps = get_symbol(c, state, 0);
+ if (ps == 1) {
+ f->picture.interlaced_frame = 1;
+ f->picture.top_field_first = 1;
+ } else if (ps == 2) {
+ f->picture.interlaced_frame = 1;
+ f->picture.top_field_first = 0;
+ } else if (ps == 3) {
+ f->picture.interlaced_frame = 0;
+ }
+ f->picture.sample_aspect_ratio.num = get_symbol(c, state, 0);
+ f->picture.sample_aspect_ratio.den = get_symbol(c, state, 0);
+
+ return 0;
+}
+
+static int decode_slice(AVCodecContext *c, void *arg)
+{
+ FFV1Context *fs = *(void **)arg;
+ FFV1Context *f = fs->avctx->priv_data;
+ int width, height, x, y;
+ const int ps = av_pix_fmt_desc_get(c->pix_fmt)->comp[0].step_minus1 + 1;
+ AVFrame * const p = &f->picture;
+
+ if (f->version > 2) {
+ if (ffv1_init_slice_state(f, fs) < 0)
+ return AVERROR(ENOMEM);
+ if (decode_slice_header(f, fs) < 0) {
+ fs->slice_damaged = 1;
+ return AVERROR_INVALIDDATA;
+ }
+ }
+ if (ffv1_init_slice_state(f, fs) < 0)
+ return AVERROR(ENOMEM);
+ if (f->picture.key_frame)
+ ffv1_clear_slice_state(f, fs);
+ width = fs->slice_width;
+ height= fs->slice_height;
+ x= fs->slice_x;
+ y= fs->slice_y;
+
+ if (!fs->ac) {
+ if (f->version == 3 && f->minor_version > 1 || f->version > 3)
+ get_rac(&fs->c, (uint8_t[]) {129});
+ fs->ac_byte_count = f->version > 2 || (!x&&!y) ? fs->c.bytestream - fs->c.bytestream_start - 1 : 0;
+ init_get_bits(&fs->gb,
+ fs->c.bytestream_start + fs->ac_byte_count,
+ (fs->c.bytestream_end - fs->c.bytestream_start - fs->ac_byte_count) * 8);
+ }
+
+ av_assert1(width && height);
+ if (f->colorspace == 0) {
+ const int chroma_width = -((-width) >> f->chroma_h_shift);
+ const int chroma_height = -((-height) >> f->chroma_v_shift);
+ const int cx = x >> f->chroma_h_shift;
+ const int cy = y >> f->chroma_v_shift;
+ decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0);
+
+ if (f->chroma_planes) {
+ decode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1);
+ decode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1);
+ }
+ if (fs->transparency)
+ decode_plane(fs, p->data[3] + ps*x + y*p->linesize[3], width, height, p->linesize[3], 2);
+ } else {
+ uint8_t *planes[3] = {p->data[0] + ps*x + y*p->linesize[0],
+ p->data[1] + ps*x + y*p->linesize[1],
+ p->data[2] + ps*x + y*p->linesize[2]};
+ decode_rgb_frame(fs, planes, width, height, p->linesize);
+ }
+ if (fs->ac && f->version > 2) {
+ int v;
+ get_rac(&fs->c, (uint8_t[]) {129});
+ v = fs->c.bytestream_end - fs->c.bytestream - 2 - 5*f->ec;
+ if (v) {
+ av_log(f->avctx, AV_LOG_ERROR, "bytestream end mismatching by %d\n", v);
+ fs->slice_damaged = 1;
+ }
+ }
+
+ emms_c();
+
+ return 0;
+}
+
+static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale)
+{
+ int v;
+ int i = 0;
+ uint8_t state[CONTEXT_SIZE];
+
+ memset(state, 128, sizeof(state));
+
+ for (v = 0; i < 128; v++) {
+ unsigned len = get_symbol(c, state, 0) + 1;
+
+ if (len > 128 - i)
+ return -1;
+
+ while (len--) {
+ quant_table[i] = scale * v;
+ i++;
+ }
+ }
+
+ for (i = 1; i < 128; i++)
+ quant_table[256 - i] = -quant_table[i];
+ quant_table[128] = -quant_table[127];
+
+ return 2 * v - 1;
+}
+
+static int read_quant_tables(RangeCoder *c,
+ int16_t quant_table[MAX_CONTEXT_INPUTS][256])
+{
+ int i;
+ int context_count = 1;
+
+ for (i = 0; i < 5; i++) {
+ context_count *= read_quant_table(c, quant_table[i], context_count);
+ if (context_count > 32768U) {
+ return -1;
+ }
+ }
+ return (context_count + 1) / 2;
+}
+
+static int read_extra_header(FFV1Context *f)
+{
+ RangeCoder *const c = &f->c;
+ uint8_t state[CONTEXT_SIZE];
+ int i, j, k;
+ uint8_t state2[32][CONTEXT_SIZE];
+
+ memset(state2, 128, sizeof(state2));
+ memset(state, 128, sizeof(state));
+
+ ff_init_range_decoder(c, f->avctx->extradata, f->avctx->extradata_size);
+ ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
+
+ f->version = get_symbol(c, state, 0);
+ if (f->version > 2) {
+ c->bytestream_end -= 4;
+ f->minor_version = get_symbol(c, state, 0);
+ }
+ f->ac = f->avctx->coder_type = get_symbol(c, state, 0);
+ if (f->ac > 1)
+ for (i = 1; i < 256; i++)
+ f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i];
+
+ f->colorspace = get_symbol(c, state, 0); // YUV cs type
+ f->avctx->bits_per_raw_sample = get_symbol(c, state, 0);
+ f->chroma_planes = get_rac(c, state);
+ f->chroma_h_shift = get_symbol(c, state, 0);
+ f->chroma_v_shift = get_symbol(c, state, 0);
+ f->transparency = get_rac(c, state);
+ f->plane_count = 2 + f->transparency;
+ f->num_h_slices = 1 + get_symbol(c, state, 0);
+ f->num_v_slices = 1 + get_symbol(c, state, 0);
+
+ if (f->num_h_slices > (unsigned)f->width ||
+ f->num_v_slices > (unsigned)f->height) {
+ av_log(f->avctx, AV_LOG_ERROR, "too many slices\n");
+ return -1;
+ }
+
+ f->quant_table_count = get_symbol(c, state, 0);
+
+ if (f->quant_table_count > (unsigned)MAX_QUANT_TABLES)
+ return -1;
+
+ for (i = 0; i < f->quant_table_count; i++) {
+ f->context_count[i] = read_quant_tables(c, f->quant_tables[i]);
+ if (f->context_count[i] < 0) {
+ av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
+ return -1;
+ }
+ }
+
+ if (ffv1_allocate_initial_states(f) < 0)
+ return AVERROR(ENOMEM);
+
+ for (i = 0; i < f->quant_table_count; i++)
+ if (get_rac(c, state))
+ for (j = 0; j < f->context_count[i]; j++)
+ for (k = 0; k < CONTEXT_SIZE; k++) {
+ int pred = j ? f->initial_states[i][j - 1][k] : 128;
+ f->initial_states[i][j][k] =
+ (pred + get_symbol(c, state2[k], 1)) & 0xFF;
+ }
+
+ if (f->version > 2) {
+ f->ec = get_symbol(c, state, 0);
+ }
+
+ if (f->version > 2) {
+ unsigned v;
+ v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, f->avctx->extradata, f->avctx->extradata_size);
+ if (v) {
+ av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!\n", v);
+ return AVERROR_INVALIDDATA;
+ }
+ }
+
+ return 0;
+}
+
+static int read_header(FFV1Context *f)
+{
+ uint8_t state[CONTEXT_SIZE];
+ int i, j, context_count = -1; //-1 to avoid warning
+ RangeCoder *const c = &f->slice_context[0]->c;
+
+ memset(state, 128, sizeof(state));
+
+ if (f->version < 2) {
+ unsigned v= get_symbol(c, state, 0);
+ if (v >= 2) {
+ av_log(f->avctx, AV_LOG_ERROR, "invalid version %d in ver01 header\n", v);
+ return AVERROR_INVALIDDATA;
+ }
+ f->version = v;
+ f->ac = f->avctx->coder_type = get_symbol(c, state, 0);
+ if (f->ac > 1)
+ for (i = 1; i < 256; i++)
+ f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i];
+ f->colorspace = get_symbol(c, state, 0); // YUV cs type
+ if (f->version > 0)
+ f->avctx->bits_per_raw_sample = get_symbol(c, state, 0);
+ f->chroma_planes = get_rac(c, state);
+ f->chroma_h_shift = get_symbol(c, state, 0);
+ f->chroma_v_shift = get_symbol(c, state, 0);
+ f->transparency = get_rac(c, state);
+ f->plane_count = 2 + f->transparency;
+ }
+
+ if (f->colorspace == 0) {
+ if (!f->transparency && !f->chroma_planes) {
+ if (f->avctx->bits_per_raw_sample <= 8)
+ f->avctx->pix_fmt = AV_PIX_FMT_GRAY8;
+ else
+ f->avctx->pix_fmt = AV_PIX_FMT_GRAY16;
+ } else if (f->avctx->bits_per_raw_sample<=8 && !f->transparency) {
+ switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
+ case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P; break;
+ case 0x01: f->avctx->pix_fmt = AV_PIX_FMT_YUV440P; break;
+ case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P; break;
+ case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P; break;
+ case 0x20: f->avctx->pix_fmt = AV_PIX_FMT_YUV411P; break;
+ case 0x22: f->avctx->pix_fmt = AV_PIX_FMT_YUV410P; break;
+ default:
+ av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
+ return -1;
+ }
+ } else if (f->avctx->bits_per_raw_sample <= 8 && f->transparency) {
+ switch(16*f->chroma_h_shift + f->chroma_v_shift) {
+ case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P; break;
+ case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P; break;
+ case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P; break;
+ default:
+ av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
+ return -1;
+ }
+ } else if (f->avctx->bits_per_raw_sample == 9) {
+ f->packed_at_lsb = 1;
+ switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
+ case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P9; break;
+ case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P9; break;
+ case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P9; break;
+ default:
+ av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
+ return -1;
+ }
+ } else if (f->avctx->bits_per_raw_sample == 10) {
+ f->packed_at_lsb = 1;
+ switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
+ case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P10; break;
+ case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P10; break;
+ case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P10; break;
+ default:
+ av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
+ return -1;
+ }
+ } else {
+ switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
+ case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P16; break;
+ case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P16; break;
+ case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P16; break;
+ default:
+ av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
+ return -1;
+ }
+ }
+ } else if (f->colorspace == 1) {
+ if (f->chroma_h_shift || f->chroma_v_shift) {
+ av_log(f->avctx, AV_LOG_ERROR,
+ "chroma subsampling not supported in this colorspace\n");
+ return -1;
+ }
+ if ( f->avctx->bits_per_raw_sample == 9)
+ f->avctx->pix_fmt = AV_PIX_FMT_GBRP9;
+ else if (f->avctx->bits_per_raw_sample == 10)
+ f->avctx->pix_fmt = AV_PIX_FMT_GBRP10;
+ else if (f->avctx->bits_per_raw_sample == 12)
+ f->avctx->pix_fmt = AV_PIX_FMT_GBRP12;
+ else if (f->avctx->bits_per_raw_sample == 14)
+ f->avctx->pix_fmt = AV_PIX_FMT_GBRP14;
+ else
+ if (f->transparency) f->avctx->pix_fmt = AV_PIX_FMT_RGB32;
+ else f->avctx->pix_fmt = AV_PIX_FMT_0RGB32;
+ } else {
+ av_log(f->avctx, AV_LOG_ERROR, "colorspace not supported\n");
+ return -1;
+ }
+
+ av_dlog(f->avctx, "%d %d %d\n",
+ f->chroma_h_shift, f->chroma_v_shift, f->avctx->pix_fmt);
+
+ if (f->version < 2) {
+ context_count = read_quant_tables(c, f->quant_table);
+ if (context_count < 0) {
+ av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
+ return -1;
+ }
+ } else if (f->version < 3) {
+ f->slice_count = get_symbol(c, state, 0);
+ } else {
+ const uint8_t *p = c->bytestream_end;
+ for (f->slice_count = 0; f->slice_count < MAX_SLICES && 3 < p - c->bytestream_start; f->slice_count++) {
+ int trailer = 3 + 5*!!f->ec;
+ int size = AV_RB24(p-trailer);
+ if (size + trailer > p - c->bytestream_start)
+ break;
+ p -= size + trailer;
+ }
+ }
+ if (f->slice_count > (unsigned)MAX_SLICES || f->slice_count <= 0) {
+ av_log(f->avctx, AV_LOG_ERROR, "slice count %d is invalid\n", f->slice_count);
+ return -1;
+ }
+
+ for (j = 0; j < f->slice_count; j++) {
+ FFV1Context *fs = f->slice_context[j];
+ fs->ac = f->ac;
+ fs->packed_at_lsb = f->packed_at_lsb;
+
+ fs->slice_damaged = 0;
+
+ if (f->version == 2) {
+ fs->slice_x = get_symbol(c, state, 0) * f->width ;
+ fs->slice_y = get_symbol(c, state, 0) * f->height;
+ fs->slice_width = (get_symbol(c, state, 0) + 1) * f->width + fs->slice_x;
+ fs->slice_height = (get_symbol(c, state, 0) + 1) * f->height + fs->slice_y;
+
+ fs->slice_x /= f->num_h_slices;
+ fs->slice_y /= f->num_v_slices;
+ fs->slice_width = fs->slice_width / f->num_h_slices - fs->slice_x;
+ fs->slice_height = fs->slice_height / f->num_v_slices - fs->slice_y;
+ if ((unsigned)fs->slice_width > f->width ||
+ (unsigned)fs->slice_height > f->height)
+ return -1;
+ if ((unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width ||
+ (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)
+ return -1;
+ }
+
+ for (i = 0; i < f->plane_count; i++) {
+ PlaneContext *const p = &fs->plane[i];
+
+ if (f->version == 2) {
+ int idx = get_symbol(c, state, 0);
+ if (idx > (unsigned)f->quant_table_count) {
+ av_log(f->avctx, AV_LOG_ERROR,
+ "quant_table_index out of range\n");
+ return -1;
+ }
+ p->quant_table_index = idx;
+ memcpy(p->quant_table, f->quant_tables[idx],
+ sizeof(p->quant_table));
+ context_count = f->context_count[idx];
+ } else {
+ memcpy(p->quant_table, f->quant_table, sizeof(p->quant_table));
+ }
+
+ if (f->version <= 2) {
+ av_assert0(context_count >= 0);
+ if (p->context_count < context_count) {
+ av_freep(&p->state);
+ av_freep(&p->vlc_state);
+ }
+ p->context_count = context_count;
+ }
+ }
+ }
+ return 0;
+}
+
+static av_cold int decode_init(AVCodecContext *avctx)
+{
+ FFV1Context *f = avctx->priv_data;
+
+ ffv1_common_init(avctx);
+
+ if (avctx->extradata && read_extra_header(f) < 0)
+ return -1;
+
+ if (ffv1_init_slice_contexts(f) < 0)
+ return -1;
+
+ return 0;
+}
+
+static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt)
+{
+ const uint8_t *buf = avpkt->data;
+ int buf_size = avpkt->size;
+ FFV1Context *f = avctx->priv_data;
+ RangeCoder *const c = &f->slice_context[0]->c;
+ AVFrame *const p = &f->picture;
+ int i;
+ uint8_t keystate = 128;
+ const uint8_t *buf_p;
+
+ AVFrame *picture = data;
+
+ /* release previously stored data */
+ if (p->data[0])
+ avctx->release_buffer(avctx, p);
+
+ ff_init_range_decoder(c, buf, buf_size);
+ ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
+
+ p->pict_type = AV_PICTURE_TYPE_I; // FIXME: I vs. P
+ if (get_rac(c, &keystate)) {
+ p->key_frame = 1;
+ f->key_frame_ok = 0;
+ if (read_header(f) < 0)
+ return -1;
+ f->key_frame_ok = 1;
+ } else {
+ if (!f->key_frame_ok) {
+ av_log(avctx, AV_LOG_ERROR, "Cant decode non keyframe without valid keyframe\n");
+ return AVERROR_INVALIDDATA;
+ }
+ p->key_frame= 0;
+ }
+
+ p->reference = 3; //for error concealment
+ if (avctx->get_buffer(avctx, p) < 0) {
+ av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
+ return -1;
+ }
+
+ if (avctx->debug&FF_DEBUG_PICT_INFO)
+ av_log(avctx, AV_LOG_DEBUG, "ver:%d keyframe:%d coder:%d ec:%d slices:%d bps:%d\n",
+ f->version, p->key_frame, f->ac, f->ec, f->slice_count, f->avctx->bits_per_raw_sample);
+
+ buf_p = buf + buf_size;
+ for (i = f->slice_count - 1; i >= 0; i--) {
+ FFV1Context *fs = f->slice_context[i];
+ int trailer = 3 + 5*!!f->ec;
+ int v;
+
+ if (i || f->version>2) v = AV_RB24(buf_p-trailer)+trailer;
+ else v = buf_p - c->bytestream_start;
+ if (buf_p - c->bytestream_start < v) {
+ av_log(avctx, AV_LOG_ERROR, "Slice pointer chain broken\n");
+ return -1;
+ }
+ buf_p -= v;
+
+ if (f->ec) {
+ unsigned crc = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, buf_p, v);
+ if (crc) {
+ int64_t ts = avpkt->pts != AV_NOPTS_VALUE ? avpkt->pts : avpkt->dts;
+ av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!", crc);
+ if (ts != AV_NOPTS_VALUE && avctx->pkt_timebase.num) {
+ av_log(f->avctx, AV_LOG_ERROR, "at %f seconds\n", ts*av_q2d(avctx->pkt_timebase));
+ } else if (ts != AV_NOPTS_VALUE) {
+ av_log(f->avctx, AV_LOG_ERROR, "at %"PRId64"\n", ts);
+ } else {
+ av_log(f->avctx, AV_LOG_ERROR, "\n");
+ }
+ fs->slice_damaged = 1;
+ }
+ }
+
+ if (i) {
+ ff_init_range_decoder(&fs->c, buf_p, v);
+ } else
+ fs->c.bytestream_end = (uint8_t *)(buf_p + v);
+ }
+
+ avctx->execute(avctx, decode_slice, &f->slice_context[0], NULL, f->slice_count, sizeof(void*));
+
+ for (i=f->slice_count-1; i>=0; i--) {
+ FFV1Context *fs= f->slice_context[i];
+ int j;
+ if (fs->slice_damaged && f->last_picture.data[0]) {
+ uint8_t *dst[4], *src[4];
+ for (j=0; j<4; j++) {
+ int sh = (j==1 || j==2) ? f->chroma_h_shift : 0;
+ int sv = (j==1 || j==2) ? f->chroma_v_shift : 0;
+ dst[j] = f->picture .data[j] + f->picture .linesize[j]*
+ (fs->slice_y>>sv) + (fs->slice_x>>sh);
+ src[j] = f->last_picture.data[j] + f->last_picture.linesize[j]*
+ (fs->slice_y>>sv) + (fs->slice_x>>sh);
+ }
+ av_image_copy(dst, f->picture.linesize, (const uint8_t **)src, f->last_picture.linesize,
+ avctx->pix_fmt, fs->slice_width, fs->slice_height);
+ }
+ }
+
+ f->picture_number++;
+
+ *picture = *p;
+ *data_size = sizeof(AVFrame);
+
+ FFSWAP(AVFrame, f->picture, f->last_picture);
+
+ return buf_size;
+}
+
+AVCodec ff_ffv1_decoder = {
+ .name = "ffv1",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = AV_CODEC_ID_FFV1,
+ .priv_data_size = sizeof(FFV1Context),
+ .init = decode_init,
+ .close = ffv1_common_end,
+ .decode = decode_frame,
+ .capabilities = CODEC_CAP_DR1 /*| CODEC_CAP_DRAW_HORIZ_BAND*/ |
+ CODEC_CAP_SLICE_THREADS,
+ .long_name = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
+};
--- /dev/null
+/*
+ * FFV1 encoder
+ *
+ * Copyright (c) 2003-2012 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * FF Video Codec 1 (a lossless codec) encoder
+ */
+
+#include "libavutil/avassert.h"
+#include "libavutil/crc.h"
+#include "libavutil/opt.h"
+#include "libavutil/imgutils.h"
+#include "libavutil/pixdesc.h"
+#include "libavutil/timer.h"
+#include "avcodec.h"
+#include "internal.h"
+#include "get_bits.h"
+#include "dsputil.h"
+#include "rangecoder.h"
+#include "golomb.h"
+#include "mathops.h"
+#include "ffv1.h"
+
+static const int8_t quant5_10bit[256] = {
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
+ -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
+ -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
+ -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
+ -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0,
+};
+
+static const int8_t quant5[256] = {
+ 0, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
+ -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
+ -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
+ -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
+ -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
+ -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
+ -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
+ -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -1, -1, -1,
+};
+
+static const int8_t quant9_10bit[256] = {
+ 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3,
+ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
+ 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4,
+ 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+ 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+ 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+ 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+ -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4,
+ -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4,
+ -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4,
+ -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4,
+ -4, -4, -4, -4, -4, -4, -4, -4, -4, -3, -3, -3, -3, -3, -3, -3,
+ -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3,
+ -3, -3, -3, -3, -3, -3, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
+ -2, -2, -2, -2, -1, -1, -1, -1, -1, -1, -1, -1, -0, -0, -0, -0,
+};
+
+static const int8_t quant11[256] = {
+ 0, 1, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4,
+ 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+ 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
+ 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
+ 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
+ 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
+ 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
+ 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
+ -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5,
+ -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5,
+ -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5,
+ -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5,
+ -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5,
+ -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -4, -4,
+ -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4,
+ -4, -4, -4, -4, -4, -3, -3, -3, -3, -3, -3, -3, -2, -2, -2, -1,
+};
+
+static const uint8_t ver2_state[256] = {
+ 0, 10, 10, 10, 10, 16, 16, 16, 28, 16, 16, 29, 42, 49, 20, 49,
+ 59, 25, 26, 26, 27, 31, 33, 33, 33, 34, 34, 37, 67, 38, 39, 39,
+ 40, 40, 41, 79, 43, 44, 45, 45, 48, 48, 64, 50, 51, 52, 88, 52,
+ 53, 74, 55, 57, 58, 58, 74, 60, 101, 61, 62, 84, 66, 66, 68, 69,
+ 87, 82, 71, 97, 73, 73, 82, 75, 111, 77, 94, 78, 87, 81, 83, 97,
+ 85, 83, 94, 86, 99, 89, 90, 99, 111, 92, 93, 134, 95, 98, 105, 98,
+ 105, 110, 102, 108, 102, 118, 103, 106, 106, 113, 109, 112, 114, 112, 116, 125,
+ 115, 116, 117, 117, 126, 119, 125, 121, 121, 123, 145, 124, 126, 131, 127, 129,
+ 165, 130, 132, 138, 133, 135, 145, 136, 137, 139, 146, 141, 143, 142, 144, 148,
+ 147, 155, 151, 149, 151, 150, 152, 157, 153, 154, 156, 168, 158, 162, 161, 160,
+ 172, 163, 169, 164, 166, 184, 167, 170, 177, 174, 171, 173, 182, 176, 180, 178,
+ 175, 189, 179, 181, 186, 183, 192, 185, 200, 187, 191, 188, 190, 197, 193, 196,
+ 197, 194, 195, 196, 198, 202, 199, 201, 210, 203, 207, 204, 205, 206, 208, 214,
+ 209, 211, 221, 212, 213, 215, 224, 216, 217, 218, 219, 220, 222, 228, 223, 225,
+ 226, 224, 227, 229, 240, 230, 231, 232, 233, 234, 235, 236, 238, 239, 237, 242,
+ 241, 243, 242, 244, 245, 246, 247, 248, 249, 250, 251, 252, 252, 253, 254, 255,
+};
+
+static void find_best_state(uint8_t best_state[256][256],
+ const uint8_t one_state[256])
+{
+ int i, j, k, m;
+ double l2tab[256];
+
+ for (i = 1; i < 256; i++)
+ l2tab[i] = log2(i / 256.0);
+
+ for (i = 0; i < 256; i++) {
+ double best_len[256];
+ double p = i / 256.0;
+
+ for (j = 0; j < 256; j++)
+ best_len[j] = 1 << 30;
+
+ for (j = FFMAX(i - 10, 1); j < FFMIN(i + 11, 256); j++) {
+ double occ[256] = { 0 };
+ double len = 0;
+ occ[j] = 1.0;
+ for (k = 0; k < 256; k++) {
+ double newocc[256] = { 0 };
+ for (m = 1; m < 256; m++)
+ if (occ[m]) {
+ len -=occ[m]*( p *l2tab[ m]
+ + (1-p)*l2tab[256-m]);
+ }
+ if (len < best_len[k]) {
+ best_len[k] = len;
+ best_state[i][k] = j;
+ }
+ for (m = 0; m < 256; m++)
+ if (occ[m]) {
+ newocc[ one_state[ m]] += occ[m] * p;
+ newocc[256 - one_state[256 - m]] += occ[m] * (1 - p);
+ }
+ memcpy(occ, newocc, sizeof(occ));
+ }
+ }
+ }
+}
+
+static av_always_inline av_flatten void put_symbol_inline(RangeCoder *c,
+ uint8_t *state, int v,
+ int is_signed,
+ uint64_t rc_stat[256][2],
+ uint64_t rc_stat2[32][2])
+{
+ int i;
+
+#define put_rac(C, S, B) \
+ do { \
+ if (rc_stat) { \
+ rc_stat[*(S)][B]++; \
+ rc_stat2[(S) - state][B]++; \
+ } \
+ put_rac(C, S, B); \
+ } while (0)
+
+ if (v) {
+ const int a = FFABS(v);
+ const int e = av_log2(a);
+ put_rac(c, state + 0, 0);
+ if (e <= 9) {
+ for (i = 0; i < e; i++)
+ put_rac(c, state + 1 + i, 1); // 1..10
+ put_rac(c, state + 1 + i, 0);
+
+ for (i = e - 1; i >= 0; i--)
+ put_rac(c, state + 22 + i, (a >> i) & 1); // 22..31
+
+ if (is_signed)
+ put_rac(c, state + 11 + e, v < 0); // 11..21
+ } else {
+ for (i = 0; i < e; i++)
+ put_rac(c, state + 1 + FFMIN(i, 9), 1); // 1..10
+ put_rac(c, state + 1 + 9, 0);
+
+ for (i = e - 1; i >= 0; i--)
+ put_rac(c, state + 22 + FFMIN(i, 9), (a >> i) & 1); // 22..31
+
+ if (is_signed)
+ put_rac(c, state + 11 + 10, v < 0); // 11..21
+ }
+ } else {
+ put_rac(c, state + 0, 1);
+ }
+#undef put_rac
+}
+
+static av_noinline void put_symbol(RangeCoder *c, uint8_t *state,
+ int v, int is_signed)
+{
+ put_symbol_inline(c, state, v, is_signed, NULL, NULL);
+}
+
+
+static inline void put_vlc_symbol(PutBitContext *pb, VlcState *const state,
+ int v, int bits)
+{
+ int i, k, code;
+ v = fold(v - state->bias, bits);
+
+ i = state->count;
+ k = 0;
+ while (i < state->error_sum) { // FIXME: optimize
+ k++;
+ i += i;
+ }
+
+ av_assert2(k<=13);
+
+#if 0 // JPEG LS
+ if (k == 0 && 2 * state->drift <= -state->count)
+ code = v ^ (-1);
+ else
+ code = v;
+#else
+ code = v ^ ((2 * state->drift + state->count) >> 31);
+#endif
+
+ av_dlog(NULL, "v:%d/%d bias:%d error:%d drift:%d count:%d k:%d\n", v, code,
+ state->bias, state->error_sum, state->drift, state->count, k);
+ set_sr_golomb(pb, code, k, 12, bits);
+
+ update_vlc_state(state, v);
+}
+
+static av_always_inline int encode_line(FFV1Context *s, int w,
+ int16_t *sample[3],
+ int plane_index, int bits)
+{
+ PlaneContext *const p = &s->plane[plane_index];
+ RangeCoder *const c = &s->c;
+ int x;
+ int run_index = s->run_index;
+ int run_count = 0;
+ int run_mode = 0;
+
+ if (s->ac) {
+ if (c->bytestream_end - c->bytestream < w * 20) {
+ av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
+ return -1;
+ }
+ } else {
+ if (s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb) >> 3) < w * 4) {
+ av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
+ return -1;
+ }
+ }
+
+ for (x = 0; x < w; x++) {
+ int diff, context;
+
+ context = get_context(p, sample[0] + x, sample[1] + x, sample[2] + x);
+ diff = sample[0][x] - predict(sample[0] + x, sample[1] + x);
+
+ if (context < 0) {
+ context = -context;
+ diff = -diff;
+ }
+
+ diff = fold(diff, bits);
+
+ if (s->ac) {
+ if (s->flags & CODEC_FLAG_PASS1) {
+ put_symbol_inline(c, p->state[context], diff, 1, s->rc_stat,
+ s->rc_stat2[p->quant_table_index][context]);
+ } else {
+ put_symbol_inline(c, p->state[context], diff, 1, NULL, NULL);
+ }
+ } else {
+ if (context == 0)
+ run_mode = 1;
+
+ if (run_mode) {
+ if (diff) {
+ while (run_count >= 1 << ff_log2_run[run_index]) {
+ run_count -= 1 << ff_log2_run[run_index];
+ run_index++;
+ put_bits(&s->pb, 1, 1);
+ }
+
+ put_bits(&s->pb, 1 + ff_log2_run[run_index], run_count);
+ if (run_index)
+ run_index--;
+ run_count = 0;
+ run_mode = 0;
+ if (diff > 0)
+ diff--;
+ } else {
+ run_count++;
+ }
+ }
+
+ av_dlog(s->avctx, "count:%d index:%d, mode:%d, x:%d pos:%d\n",
+ run_count, run_index, run_mode, x,
+ (int)put_bits_count(&s->pb));
+
+ if (run_mode == 0)
+ put_vlc_symbol(&s->pb, &p->vlc_state[context], diff, bits);
+ }
+ }
+ if (run_mode) {
+ while (run_count >= 1 << ff_log2_run[run_index]) {
+ run_count -= 1 << ff_log2_run[run_index];
+ run_index++;
+ put_bits(&s->pb, 1, 1);
+ }
+
+ if (run_count)
+ put_bits(&s->pb, 1, 1);
+ }
+ s->run_index = run_index;
+
+ return 0;
+}
+
+static void encode_plane(FFV1Context *s, uint8_t *src, int w, int h,
+ int stride, int plane_index)
+{
+ int x, y, i;
+ const int ring_size = s->avctx->context_model ? 3 : 2;
+ int16_t *sample[3];
+ s->run_index = 0;
+
+ memset(s->sample_buffer, 0, ring_size * (w + 6) * sizeof(*s->sample_buffer));
+
+ for (y = 0; y < h; y++) {
+ for (i = 0; i < ring_size; i++)
+ sample[i] = s->sample_buffer + (w + 6) * ((h + i - y) % ring_size) + 3;
+
+ sample[0][-1]= sample[1][0 ];
+ sample[1][ w]= sample[1][w-1];
+// { START_TIMER
+ if (s->bits_per_raw_sample <= 8) {
+ for (x = 0; x < w; x++)
+ sample[0][x] = src[x + stride * y];
+ encode_line(s, w, sample, plane_index, 8);
+ } else {
+ if (s->packed_at_lsb) {
+ for (x = 0; x < w; x++) {
+ sample[0][x] = ((uint16_t*)(src + stride*y))[x];
+ }
+ } else {
+ for (x = 0; x < w; x++) {
+ sample[0][x] = ((uint16_t*)(src + stride*y))[x] >> (16 - s->bits_per_raw_sample);
+ }
+ }
+ encode_line(s, w, sample, plane_index, s->bits_per_raw_sample);
+ }
+// STOP_TIMER("encode line") }
+ }
+}
+
+static void encode_rgb_frame(FFV1Context *s, uint8_t *src[3], int w, int h, int stride[3])
+{
+ int x, y, p, i;
+ const int ring_size = s->avctx->context_model ? 3 : 2;
+ int16_t *sample[4][3];
+ int lbd = s->avctx->bits_per_raw_sample <= 8;
+ int bits = s->avctx->bits_per_raw_sample > 0 ? s->avctx->bits_per_raw_sample : 8;
+ int offset = 1 << bits;
+ s->run_index = 0;
+
+ memset(s->sample_buffer, 0, ring_size * 4 * (w + 6) * sizeof(*s->sample_buffer));
+
+ for (y = 0; y < h; y++) {
+ for (i = 0; i < ring_size; i++)
+ for (p = 0; p < 4; p++)
+ sample[p][i]= s->sample_buffer + p*ring_size*(w+6) + ((h+i-y)%ring_size)*(w+6) + 3;
+
+ for (x = 0; x < w; x++) {
+ int b, g, r, av_uninit(a);
+ if (lbd) {
+ unsigned v = *((uint32_t*)(src[0] + x*4 + stride[0]*y));
+ b = v & 0xFF;
+ g = (v >> 8) & 0xFF;
+ r = (v >> 16) & 0xFF;
+ a = v >> 24;
+ } else {
+ b = *((uint16_t*)(src[0] + x*2 + stride[0]*y));
+ g = *((uint16_t*)(src[1] + x*2 + stride[1]*y));
+ r = *((uint16_t*)(src[2] + x*2 + stride[2]*y));
+ }
+
+ b -= g;
+ r -= g;
+ g += (b + r) >> 2;
+ b += offset;
+ r += offset;
+
+ sample[0][0][x] = g;
+ sample[1][0][x] = b;
+ sample[2][0][x] = r;
+ sample[3][0][x] = a;
+ }
+ for (p = 0; p < 3 + s->transparency; p++) {
+ sample[p][0][-1] = sample[p][1][0 ];
+ sample[p][1][ w] = sample[p][1][w-1];
+ if (lbd)
+ encode_line(s, w, sample[p], (p+1)/2, 9);
+ else
+ encode_line(s, w, sample[p], (p+1)/2, bits+1);
+ }
+ }
+}
+
+static void write_quant_table(RangeCoder *c, int16_t *quant_table)
+{
+ int last = 0;
+ int i;
+ uint8_t state[CONTEXT_SIZE];
+ memset(state, 128, sizeof(state));
+
+ for (i = 1; i < 128; i++)
+ if (quant_table[i] != quant_table[i - 1]) {
+ put_symbol(c, state, i - last - 1, 0);
+ last = i;
+ }
+ put_symbol(c, state, i - last - 1, 0);
+}
+
+static void write_quant_tables(RangeCoder *c,
+ int16_t quant_table[MAX_CONTEXT_INPUTS][256])
+{
+ int i;
+ for (i = 0; i < 5; i++)
+ write_quant_table(c, quant_table[i]);
+}
+
+static void write_header(FFV1Context *f)
+{
+ uint8_t state[CONTEXT_SIZE];
+ int i, j;
+ RangeCoder *const c = &f->slice_context[0]->c;
+
+ memset(state, 128, sizeof(state));
+
+ if (f->version < 2) {
+ put_symbol(c, state, f->version, 0);
+ put_symbol(c, state, f->ac, 0);
+ if (f->ac > 1) {
+ for (i = 1; i < 256; i++)
+ put_symbol(c, state,
+ f->state_transition[i] - c->one_state[i], 1);
+ }
+ put_symbol(c, state, f->colorspace, 0); //YUV cs type
+ if (f->version > 0)
+ put_symbol(c, state, f->bits_per_raw_sample, 0);
+ put_rac(c, state, f->chroma_planes);
+ put_symbol(c, state, f->chroma_h_shift, 0);
+ put_symbol(c, state, f->chroma_v_shift, 0);
+ put_rac(c, state, f->transparency);
+
+ write_quant_tables(c, f->quant_table);
+ } else if (f->version < 3) {
+ put_symbol(c, state, f->slice_count, 0);
+ for (i = 0; i < f->slice_count; i++) {
+ FFV1Context *fs = f->slice_context[i];
+ put_symbol(c, state,
+ (fs->slice_x + 1) * f->num_h_slices / f->width, 0);
+ put_symbol(c, state,
+ (fs->slice_y + 1) * f->num_v_slices / f->height, 0);
+ put_symbol(c, state,
+ (fs->slice_width + 1) * f->num_h_slices / f->width - 1,
+ 0);
+ put_symbol(c, state,
+ (fs->slice_height + 1) * f->num_v_slices / f->height - 1,
+ 0);
+ for (j = 0; j < f->plane_count; j++) {
+ put_symbol(c, state, f->plane[j].quant_table_index, 0);
+ av_assert0(f->plane[j].quant_table_index == f->avctx->context_model);
+ }
+ }
+ }
+}
+
+static int write_extra_header(FFV1Context *f)
+{
+ RangeCoder *const c = &f->c;
+ uint8_t state[CONTEXT_SIZE];
+ int i, j, k;
+ uint8_t state2[32][CONTEXT_SIZE];
+ unsigned v;
+
+ memset(state2, 128, sizeof(state2));
+ memset(state, 128, sizeof(state));
+
+ f->avctx->extradata = av_malloc(f->avctx->extradata_size = 10000 +
+ (11 * 11 * 5 * 5 * 5 + 11 * 11 * 11) * 32);
+ ff_init_range_encoder(c, f->avctx->extradata, f->avctx->extradata_size);
+ ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
+
+ put_symbol(c, state, f->version, 0);
+ if (f->version > 2) {
+ if (f->version == 3)
+ f->minor_version = 2;
+ put_symbol(c, state, f->minor_version, 0);
+ }
+ put_symbol(c, state, f->ac, 0);
+ if (f->ac > 1)
+ for (i = 1; i < 256; i++)
+ put_symbol(c, state, f->state_transition[i] - c->one_state[i], 1);
+ put_symbol(c, state, f->colorspace, 0); // YUV cs type
+ put_symbol(c, state, f->bits_per_raw_sample, 0);
+ put_rac(c, state, f->chroma_planes);
+ put_symbol(c, state, f->chroma_h_shift, 0);
+ put_symbol(c, state, f->chroma_v_shift, 0);
+ put_rac(c, state, f->transparency);
+ put_symbol(c, state, f->num_h_slices - 1, 0);
+ put_symbol(c, state, f->num_v_slices - 1, 0);
+
+ put_symbol(c, state, f->quant_table_count, 0);
+ for (i = 0; i < f->quant_table_count; i++)
+ write_quant_tables(c, f->quant_tables[i]);
+
+ for (i = 0; i < f->quant_table_count; i++) {
+ for (j = 0; j < f->context_count[i] * CONTEXT_SIZE; j++)
+ if (f->initial_states[i] && f->initial_states[i][0][j] != 128)
+ break;
+ if (j < f->context_count[i] * CONTEXT_SIZE) {
+ put_rac(c, state, 1);
+ for (j = 0; j < f->context_count[i]; j++)
+ for (k = 0; k < CONTEXT_SIZE; k++) {
+ int pred = j ? f->initial_states[i][j - 1][k] : 128;
+ put_symbol(c, state2[k],
+ (int8_t)(f->initial_states[i][j][k] - pred), 1);
+ }
+ } else {
+ put_rac(c, state, 0);
+ }
+ }
+
+ if (f->version > 2) {
+ put_symbol(c, state, f->ec, 0);
+ }
+
+ f->avctx->extradata_size = ff_rac_terminate(c);
+ v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, f->avctx->extradata, f->avctx->extradata_size);
+ AV_WL32(f->avctx->extradata + f->avctx->extradata_size, v);
+ f->avctx->extradata_size += 4;
+
+ return 0;
+}
+
+static int sort_stt(FFV1Context *s, uint8_t stt[256])
+{
+ int i, i2, changed, print = 0;
+
+ do {
+ changed = 0;
+ for (i = 12; i < 244; i++) {
+ for (i2 = i + 1; i2 < 245 && i2 < i + 4; i2++) {
+
+#define COST(old, new) \
+ s->rc_stat[old][0] * -log2((256 - (new)) / 256.0) + \
+ s->rc_stat[old][1] * -log2((new) / 256.0)
+
+#define COST2(old, new) \
+ COST(old, new) + COST(256 - (old), 256 - (new))
+
+ double size0 = COST2(i, i) + COST2(i2, i2);
+ double sizeX = COST2(i, i2) + COST2(i2, i);
+ if (sizeX < size0 && i != 128 && i2 != 128) {
+ int j;
+ FFSWAP(int, stt[i], stt[i2]);
+ FFSWAP(int, s->rc_stat[i][0], s->rc_stat[i2][0]);
+ FFSWAP(int, s->rc_stat[i][1], s->rc_stat[i2][1]);
+ if (i != 256 - i2) {
+ FFSWAP(int, stt[256 - i], stt[256 - i2]);
+ FFSWAP(int, s->rc_stat[256 - i][0], s->rc_stat[256 - i2][0]);
+ FFSWAP(int, s->rc_stat[256 - i][1], s->rc_stat[256 - i2][1]);
+ }
+ for (j = 1; j < 256; j++) {
+ if (stt[j] == i)
+ stt[j] = i2;
+ else if (stt[j] == i2)
+ stt[j] = i;
+ if (i != 256 - i2) {
+ if (stt[256 - j] == 256 - i)
+ stt[256 - j] = 256 - i2;
+ else if (stt[256 - j] == 256 - i2)
+ stt[256 - j] = 256 - i;
+ }
+ }
+ print = changed = 1;
+ }
+ }
+ }
+ } while (changed);
+ return print;
+}
+
+static av_cold int encode_init(AVCodecContext *avctx)
+{
+ const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
+ FFV1Context *s = avctx->priv_data;
+ int i, j, k, m;
+
+ ffv1_common_init(avctx);
+
+ s->version = 0;
+
+ if ((avctx->flags & (CODEC_FLAG_PASS1|CODEC_FLAG_PASS2)) || avctx->slices>1)
+ s->version = FFMAX(s->version, 2);
+
+ if (avctx->level == 3) {
+ s->version = 3;
+ }
+
+ if (s->ec < 0) {
+ s->ec = (s->version >= 3);
+ }
+
+ if (s->version >= 2 && avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
+ av_log(avctx, AV_LOG_ERROR, "Version 2 needed for requested features but version 2 is experimental and not enabled\n");
+ return AVERROR_INVALIDDATA;
+ }
+
+ s->ac = avctx->coder_type > 0 ? 2 : 0;
+
+ s->plane_count = 3;
+ switch(avctx->pix_fmt) {
+ case AV_PIX_FMT_YUV444P9:
+ case AV_PIX_FMT_YUV422P9:
+ case AV_PIX_FMT_YUV420P9:
+ if (!avctx->bits_per_raw_sample)
+ s->bits_per_raw_sample = 9;
+ case AV_PIX_FMT_YUV444P10:
+ case AV_PIX_FMT_YUV420P10:
+ case AV_PIX_FMT_YUV422P10:
+ s->packed_at_lsb = 1;
+ if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
+ s->bits_per_raw_sample = 10;
+ case AV_PIX_FMT_GRAY16:
+ case AV_PIX_FMT_YUV444P16:
+ case AV_PIX_FMT_YUV422P16:
+ case AV_PIX_FMT_YUV420P16:
+ if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample) {
+ s->bits_per_raw_sample = 16;
+ } else if (!s->bits_per_raw_sample) {
+ s->bits_per_raw_sample = avctx->bits_per_raw_sample;
+ }
+ if (s->bits_per_raw_sample <= 8) {
+ av_log(avctx, AV_LOG_ERROR, "bits_per_raw_sample invalid\n");
+ return AVERROR_INVALIDDATA;
+ }
+ if (!s->ac && avctx->coder_type == -1) {
+ av_log(avctx, AV_LOG_INFO, "bits_per_raw_sample > 8, forcing coder 1\n");
+ s->ac = 2;
+ }
+ if (!s->ac) {
+ av_log(avctx, AV_LOG_ERROR, "bits_per_raw_sample of more than 8 needs -coder 1 currently\n");
+ return AVERROR_INVALIDDATA;
+ }
+ s->version = FFMAX(s->version, 1);
+ case AV_PIX_FMT_GRAY8:
+ case AV_PIX_FMT_YUV444P:
+ case AV_PIX_FMT_YUV440P:
+ case AV_PIX_FMT_YUV422P:
+ case AV_PIX_FMT_YUV420P:
+ case AV_PIX_FMT_YUV411P:
+ case AV_PIX_FMT_YUV410P:
+ s->chroma_planes = desc->nb_components < 3 ? 0 : 1;
+ s->colorspace = 0;
+ break;
+ case AV_PIX_FMT_YUVA444P:
+ case AV_PIX_FMT_YUVA422P:
+ case AV_PIX_FMT_YUVA420P:
+ s->chroma_planes = 1;
+ s->colorspace = 0;
+ s->transparency = 1;
+ break;
+ case AV_PIX_FMT_RGB32:
+ s->colorspace = 1;
+ s->transparency = 1;
+ break;
+ case AV_PIX_FMT_0RGB32:
+ s->colorspace = 1;
+ break;
+ case AV_PIX_FMT_GBRP9:
+ if (!avctx->bits_per_raw_sample)
+ s->bits_per_raw_sample = 9;
+ case AV_PIX_FMT_GBRP10:
+ if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
+ s->bits_per_raw_sample = 10;
+ case AV_PIX_FMT_GBRP12:
+ if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
+ s->bits_per_raw_sample = 12;
+ case AV_PIX_FMT_GBRP14:
+ if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
+ s->bits_per_raw_sample = 14;
+ else if (!s->bits_per_raw_sample)
+ s->bits_per_raw_sample = avctx->bits_per_raw_sample;
+ s->colorspace = 1;
+ s->chroma_planes = 1;
+ s->version = FFMAX(s->version, 1);
+ break;
+ default:
+ av_log(avctx, AV_LOG_ERROR, "format not supported\n");
+ return AVERROR_INVALIDDATA;
+ }
+ if (s->transparency) {
+ av_log(avctx, AV_LOG_WARNING, "Storing alpha plane, this will require a recent FFV1 decoder to playback!\n");
+ }
+ if (avctx->context_model > 1U) {
+ av_log(avctx, AV_LOG_ERROR, "Invalid context model %d, valid values are 0 and 1\n", avctx->context_model);
+ return AVERROR(EINVAL);
+ }
+
+ if (s->ac > 1)
+ for (i = 1; i < 256; i++)
+ s->state_transition[i] = ver2_state[i];
+
+ for (i = 0; i < 256; i++) {
+ s->quant_table_count = 2;
+ if (s->bits_per_raw_sample <= 8) {
+ s->quant_tables[0][0][i]= quant11[i];
+ s->quant_tables[0][1][i]= 11*quant11[i];
+ s->quant_tables[0][2][i]= 11*11*quant11[i];
+ s->quant_tables[1][0][i]= quant11[i];
+ s->quant_tables[1][1][i]= 11*quant11[i];
+ s->quant_tables[1][2][i]= 11*11*quant5 [i];
+ s->quant_tables[1][3][i]= 5*11*11*quant5 [i];
+ s->quant_tables[1][4][i]= 5*5*11*11*quant5 [i];
+ } else {
+ s->quant_tables[0][0][i]= quant9_10bit[i];
+ s->quant_tables[0][1][i]= 11*quant9_10bit[i];
+ s->quant_tables[0][2][i]= 11*11*quant9_10bit[i];
+ s->quant_tables[1][0][i]= quant9_10bit[i];
+ s->quant_tables[1][1][i]= 11*quant9_10bit[i];
+ s->quant_tables[1][2][i]= 11*11*quant5_10bit[i];
+ s->quant_tables[1][3][i]= 5*11*11*quant5_10bit[i];
+ s->quant_tables[1][4][i]= 5*5*11*11*quant5_10bit[i];
+ }
+ }
+ s->context_count[0] = (11 * 11 * 11 + 1) / 2;
+ s->context_count[1] = (11 * 11 * 5 * 5 * 5 + 1) / 2;
+ memcpy(s->quant_table, s->quant_tables[avctx->context_model],
+ sizeof(s->quant_table));
+
+ for (i = 0; i < s->plane_count; i++) {
+ PlaneContext *const p = &s->plane[i];
+
+ memcpy(p->quant_table, s->quant_table, sizeof(p->quant_table));
+ p->quant_table_index = avctx->context_model;
+ p->context_count = s->context_count[p->quant_table_index];
+ }
+
+ if (ffv1_allocate_initial_states(s) < 0)
+ return AVERROR(ENOMEM);
+
+ avctx->coded_frame = &s->picture;
+ if (!s->transparency)
+ s->plane_count = 2;
+ avcodec_get_chroma_sub_sample(avctx->pix_fmt, &s->chroma_h_shift, &s->chroma_v_shift);
+ s->picture_number = 0;
+
+ if (avctx->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
+ for (i = 0; i < s->quant_table_count; i++) {
+ s->rc_stat2[i] = av_mallocz(s->context_count[i] *
+ sizeof(*s->rc_stat2[i]));
+ if (!s->rc_stat2[i])
+ return AVERROR(ENOMEM);
+ }
+ }
+ if (avctx->stats_in) {
+ char *p = avctx->stats_in;
+ uint8_t best_state[256][256];
+ int gob_count = 0;
+ char *next;
+
+ av_assert0(s->version >= 2);
+
+ for (;;) {
+ for (j = 0; j < 256; j++)
+ for (i = 0; i < 2; i++) {
+ s->rc_stat[j][i] = strtol(p, &next, 0);
+ if (next == p) {
+ av_log(avctx, AV_LOG_ERROR,
+ "2Pass file invalid at %d %d [%s]\n", j, i, p);
+ return -1;
+ }
+ p = next;
+ }
+ for (i = 0; i < s->quant_table_count; i++)
+ for (j = 0; j < s->context_count[i]; j++) {
+ for (k = 0; k < 32; k++)
+ for (m = 0; m < 2; m++) {
+ s->rc_stat2[i][j][k][m] = strtol(p, &next, 0);
+ if (next == p) {
+ av_log(avctx, AV_LOG_ERROR,
+ "2Pass file invalid at %d %d %d %d [%s]\n",
+ i, j, k, m, p);
+ return AVERROR_INVALIDDATA;
+ }
+ p = next;
+ }
+ }
+ gob_count = strtol(p, &next, 0);
+ if (next == p || gob_count <= 0) {
+ av_log(avctx, AV_LOG_ERROR, "2Pass file invalid\n");
+ return AVERROR_INVALIDDATA;
+ }
+ p = next;
+ while (*p == '\n' || *p == ' ')
+ p++;
+ if (p[0] == 0)
+ break;
+ }
+ sort_stt(s, s->state_transition);
+
+ find_best_state(best_state, s->state_transition);
+
+ for (i = 0; i < s->quant_table_count; i++) {
+ for (j = 0; j < s->context_count[i]; j++)
+ for (k = 0; k < 32; k++) {
+ double p = 128;
+ if (s->rc_stat2[i][j][k][0] + s->rc_stat2[i][j][k][1]) {
+ p = 256.0 * s->rc_stat2[i][j][k][1] /
+ (s->rc_stat2[i][j][k][0] + s->rc_stat2[i][j][k][1]);
+ }
+ s->initial_states[i][j][k] =
+ best_state[av_clip(round(p), 1, 255)][av_clip((s->rc_stat2[i][j][k][0] +
+ s->rc_stat2[i][j][k][1]) /
+ gob_count, 0, 255)];
+ }
+ }
+ }
+
+ if (s->version > 1) {
+ for (s->num_v_slices = 2; s->num_v_slices < 9; s->num_v_slices++) {
+ for (s->num_h_slices = s->num_v_slices; s->num_h_slices < 2*s->num_v_slices; s->num_h_slices++) {
+ if (avctx->slices == s->num_h_slices * s->num_v_slices && avctx->slices <= 64 || !avctx->slices)
+ goto slices_ok;
+ }
+ }
+ av_log(avctx, AV_LOG_ERROR, "Unsupported number %d of slices requested, please specify a supported number with -slices (ex:4,6,9,12,16, ...)\n", avctx->slices);
+ return -1;
+ slices_ok:
+ write_extra_header(s);
+ }
+
+ if (ffv1_init_slice_contexts(s) < 0)
+ return -1;
+ if (ffv1_init_slices_state(s) < 0)
+ return -1;
+
+#define STATS_OUT_SIZE 1024 * 1024 * 6
+ if (avctx->flags & CODEC_FLAG_PASS1) {
+ avctx->stats_out = av_mallocz(STATS_OUT_SIZE);
+ for (i = 0; i < s->quant_table_count; i++)
+ for (j = 0; j < s->slice_count; j++) {
+ FFV1Context *sf = s->slice_context[j];
+ av_assert0(!sf->rc_stat2[i]);
+ sf->rc_stat2[i] = av_mallocz(s->context_count[i] *
+ sizeof(*sf->rc_stat2[i]));
+ if (!sf->rc_stat2[i])
+ return AVERROR(ENOMEM);
+ }
+ }
+
+ return 0;
+}
+
+static void encode_slice_header(FFV1Context *f, FFV1Context *fs)
+{
+ RangeCoder *c = &fs->c;
+ uint8_t state[CONTEXT_SIZE];
+ int j;
+ memset(state, 128, sizeof(state));
+
+ put_symbol(c, state, (fs->slice_x +1)*f->num_h_slices / f->width , 0);
+ put_symbol(c, state, (fs->slice_y +1)*f->num_v_slices / f->height , 0);
+ put_symbol(c, state, (fs->slice_width +1)*f->num_h_slices / f->width -1, 0);
+ put_symbol(c, state, (fs->slice_height+1)*f->num_v_slices / f->height-1, 0);
+ for (j=0; j<f->plane_count; j++) {
+ put_symbol(c, state, f->plane[j].quant_table_index, 0);
+ av_assert0(f->plane[j].quant_table_index == f->avctx->context_model);
+ }
+ if (!f->picture.interlaced_frame) put_symbol(c, state, 3, 0);
+ else put_symbol(c, state, 1 + !f->picture.top_field_first, 0);
+ put_symbol(c, state, f->picture.sample_aspect_ratio.num, 0);
+ put_symbol(c, state, f->picture.sample_aspect_ratio.den, 0);
+}
+
+static int encode_slice(AVCodecContext *c, void *arg)
+{
+ FFV1Context *fs = *(void **)arg;
+ FFV1Context *f = fs->avctx->priv_data;
+ int width = fs->slice_width;
+ int height = fs->slice_height;
+ int x = fs->slice_x;
+ int y = fs->slice_y;
+ AVFrame *const p = &f->picture;
+ const int ps = av_pix_fmt_desc_get(c->pix_fmt)->comp[0].step_minus1 + 1;
+
+ if (p->key_frame)
+ ffv1_clear_slice_state(f, fs);
+ if (f->version > 2) {
+ encode_slice_header(f, fs);
+ }
+ if (!fs->ac) {
+ if (f->version > 2)
+ put_rac(&fs->c, (uint8_t[]) {129}, 0);
+ fs->ac_byte_count = f->version > 2 || (!x&&!y) ? ff_rac_terminate(&fs->c) : 0;
+ init_put_bits(&fs->pb, fs->c.bytestream_start + fs->ac_byte_count, fs->c.bytestream_end - fs->c.bytestream_start - fs->ac_byte_count);
+ }
+
+ if (f->colorspace == 0) {
+ const int chroma_width = -((-width) >> f->chroma_h_shift);
+ const int chroma_height = -((-height) >> f->chroma_v_shift);
+ const int cx = x >> f->chroma_h_shift;
+ const int cy = y >> f->chroma_v_shift;
+
+ encode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0);
+
+ if (f->chroma_planes) {
+ encode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1);
+ encode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1);
+ }
+ if (fs->transparency)
+ encode_plane(fs, p->data[3] + ps*x + y*p->linesize[3], width, height, p->linesize[3], 2);
+ } else {
+ uint8_t *planes[3] = {p->data[0] + ps*x + y*p->linesize[0],
+ p->data[1] + ps*x + y*p->linesize[1],
+ p->data[2] + ps*x + y*p->linesize[2]};
+ encode_rgb_frame(fs, planes, width, height, p->linesize);
+ }
+ emms_c();
+
+ return 0;
+}
+
+static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
+ const AVFrame *pict, int *got_packet)
+{
+ FFV1Context *f = avctx->priv_data;
+ RangeCoder *const c = &f->slice_context[0]->c;
+ AVFrame *const p = &f->picture;
+ int used_count = 0;
+ uint8_t keystate = 128;
+ uint8_t *buf_p;
+ int i, ret;
+
+ if ((ret = ff_alloc_packet2(avctx, pkt, avctx->width*avctx->height*((8*2+1+1)*4)/8
+ + FF_MIN_BUFFER_SIZE)) < 0)
+ return ret;
+
+ ff_init_range_encoder(c, pkt->data, pkt->size);
+ ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
+
+ *p = *pict;
+ p->pict_type = AV_PICTURE_TYPE_I;
+
+ if (avctx->gop_size == 0 || f->picture_number % avctx->gop_size == 0) {
+ put_rac(c, &keystate, 1);
+ p->key_frame = 1;
+ f->gob_count++;
+ write_header(f);
+ } else {
+ put_rac(c, &keystate, 0);
+ p->key_frame = 0;
+ }
+
+ if (f->ac > 1) {
+ int i;
+ for (i = 1; i < 256; i++) {
+ c->one_state[i] = f->state_transition[i];
+ c->zero_state[256 - i] = 256 - c->one_state[i];
+ }
+ }
+
+ for (i = 1; i < f->slice_count; i++) {
+ FFV1Context *fs = f->slice_context[i];
+ uint8_t *start = pkt->data + (pkt->size - used_count) * (int64_t)i / f->slice_count;
+ int len = pkt->size / f->slice_count;
+ ff_init_range_encoder(&fs->c, start, len);
+ }
+ avctx->execute(avctx, encode_slice, &f->slice_context[0], NULL,
+ f->slice_count, sizeof(void *));
+
+ buf_p = pkt->data;
+ for (i = 0; i < f->slice_count; i++) {
+ FFV1Context *fs = f->slice_context[i];
+ int bytes;
+
+ if (fs->ac) {
+ uint8_t state=129;
+ put_rac(&fs->c, &state, 0);
+ bytes = ff_rac_terminate(&fs->c);
+ } else {
+ flush_put_bits(&fs->pb); // FIXME: nicer padding
+ bytes = fs->ac_byte_count + (put_bits_count(&fs->pb) + 7)/8;
+ }
+ if (i > 0 || f->version > 2) {
+ av_assert0(bytes < pkt->size / f->slice_count);
+ memmove(buf_p, fs->c.bytestream_start, bytes);
+ av_assert0(bytes < (1 << 24));
+ AV_WB24(buf_p + bytes, bytes);
+ bytes += 3;
+ }
+ if (f->ec) {
+ unsigned v;
+ buf_p[bytes++] = 0;
+ v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, buf_p, bytes);
+ AV_WL32(buf_p + bytes, v); bytes += 4;
+ }
+ buf_p += bytes;
+ }
+
+ if ((avctx->flags & CODEC_FLAG_PASS1) && (f->picture_number & 31) == 0) {
+ int j, k, m;
+ char *p = avctx->stats_out;
+ char *end = p + STATS_OUT_SIZE;
+
+ memset(f->rc_stat, 0, sizeof(f->rc_stat));
+ for (i = 0; i < f->quant_table_count; i++)
+ memset(f->rc_stat2[i], 0, f->context_count[i] * sizeof(*f->rc_stat2[i]));
+
+ for (j = 0; j < f->slice_count; j++) {
+ FFV1Context *fs = f->slice_context[j];
+ for (i = 0; i < 256; i++) {
+ f->rc_stat[i][0] += fs->rc_stat[i][0];
+ f->rc_stat[i][1] += fs->rc_stat[i][1];
+ }
+ for (i = 0; i < f->quant_table_count; i++) {
+ for (k = 0; k < f->context_count[i]; k++)
+ for (m = 0; m < 32; m++) {
+ f->rc_stat2[i][k][m][0] += fs->rc_stat2[i][k][m][0];
+ f->rc_stat2[i][k][m][1] += fs->rc_stat2[i][k][m][1];
+ }
+ }
+ }
+
+ for (j = 0; j < 256; j++) {
+ snprintf(p, end - p, "%" PRIu64 " %" PRIu64 " ",
+ f->rc_stat[j][0], f->rc_stat[j][1]);
+ p += strlen(p);
+ }
+ snprintf(p, end - p, "\n");
+
+ for (i = 0; i < f->quant_table_count; i++) {
+ for (j = 0; j < f->context_count[i]; j++)
+ for (m = 0; m < 32; m++) {
+ snprintf(p, end - p, "%" PRIu64 " %" PRIu64 " ",
+ f->rc_stat2[i][j][m][0], f->rc_stat2[i][j][m][1]);
+ p += strlen(p);
+ }
+ }
+ snprintf(p, end - p, "%d\n", f->gob_count);
+ } else if (avctx->flags & CODEC_FLAG_PASS1)
+ avctx->stats_out[0] = '\0';
+
+ f->picture_number++;
+ pkt->size = buf_p - pkt->data;
+ pkt->flags |= AV_PKT_FLAG_KEY * p->key_frame;
+ *got_packet = 1;
+
+ return 0;
+}
+
+#define OFFSET(x) offsetof(FFV1Context, x)
+#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
+static const AVOption options[] = {
+ { "slicecrc", "Protect slices with CRCs", OFFSET(ec), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 1, VE},
+{NULL}
+};
+
+static const AVClass class = {
+ .class_name = "ffv1 encoder",
+ .item_name = av_default_item_name,
+ .option = options,
+ .version = LIBAVUTIL_VERSION_INT,
+};
+
+static const AVCodecDefault ffv1_defaults[] = {
+ { "coder", "-1" },
+ { NULL },
+};
+
+AVCodec ff_ffv1_encoder = {
+ .name = "ffv1",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = AV_CODEC_ID_FFV1,
+ .priv_data_size = sizeof(FFV1Context),
+ .init = encode_init,
+ .encode2 = encode_frame,
+ .close = ffv1_common_end,
+ .capabilities = CODEC_CAP_SLICE_THREADS,
+ .defaults = ffv1_defaults,
+ .pix_fmts = (const enum AVPixelFormat[]) {
+ AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV444P,
+ AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV411P,
+ AV_PIX_FMT_YUV410P, AV_PIX_FMT_0RGB32, AV_PIX_FMT_RGB32, AV_PIX_FMT_YUV420P16,
+ AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16, AV_PIX_FMT_YUV444P9, AV_PIX_FMT_YUV422P9,
+ AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
+ AV_PIX_FMT_GRAY16, AV_PIX_FMT_GRAY8, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
+ AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14,
+ AV_PIX_FMT_NONE
+ },
+ .long_name = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
+ .priv_class = &class,
+};