--- /dev/null
+/*
+ * - CrystalHD decoder module -
+ *
+ * Copyright(C) 2010 Philip Langdale <ffmpeg.philipl@overt.org>
+ *
+ * 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
+ */
+
+/*
+ * - Principles of Operation -
+ *
+ * The CrystalHD decoder operates at the bitstream level - which is an even
+ * higher level than the decoding hardware you typically see in modern GPUs.
+ * This means it has a very simple interface, in principle. You feed demuxed
+ * packets in one end and get decoded picture (fields/frames) out the other.
+ *
+ * Of course, nothing is ever that simple. Due, at the very least, to b-frame
+ * dependencies in the supported formats, the hardware has a delay between
+ * when a packet goes in, and when a picture comes out. Furthermore, this delay
+ * is not just a function of time, but also one of the dependency on additional
+ * frames being fed into the decoder to satisfy the b-frame dependencies.
+ *
+ * As such, a pipeline will build up that is roughly equivalent to the required
+ * DPB for the file being played. If that was all it took, things would still
+ * be simple - so, of course, it isn't.
+ *
+ * The hardware has a way of indicating that a picture is ready to be copied out,
+ * but this is unreliable - and sometimes the attempt will still fail so, based
+ * on testing, the code will wait until 3 pictures are ready before starting
+ * to copy out - and this has the effect of extending the pipeline.
+ *
+ * Finally, while it is tempting to say that once the decoder starts outputing
+ * frames, the software should never fail to return a frame from a decode(),
+ * this is a hard assertion to make, because the stream may switch between
+ * differently encoded content (number of b-frames, interlacing, etc) which
+ * might require a longer pipeline than before. If that happened, you could
+ * deadlock trying to retrieve a frame that can't be decoded without feeding
+ * in additional packets.
+ *
+ * As such, the code will return in the event that a picture cannot be copied
+ * out, leading to an increase in the length of the pipeline. This in turn,
+ * means we have to be sensitive to the time it takes to decode a picture;
+ * We do not want to give up just because the hardware needed a little more
+ * time to prepare the picture! For this reason, there are delays included
+ * in the decode() path that ensure that, under normal conditions, the hardware
+ * will only fail to return a frame if it really needs additional packets to
+ * complete the decoding.
+ *
+ * Finally, to be explicit, we do not want the pipeline to grow without bound
+ * for two reasons: 1) The hardware can only buffer a finite number of packets,
+ * and 2) The client application may not be able to cope with arbitrarily long
+ * delays in the video path relative to the audio path. For example. MPlayer
+ * can only handle a 20 picture delay (although this is arbitrary, and needs
+ * to be extended to fully support the CrystalHD where the delay could be up
+ * to 32 pictures - consider PAFF H.264 content with 16 b-frames).
+ */
+
+/*****************************************************************************
+ * Includes
+ ****************************************************************************/
+
+#define _XOPEN_SOURCE 600
+#include <inttypes.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <libcrystalhd/bc_dts_types.h>
+#include <libcrystalhd/bc_dts_defs.h>
+#include <libcrystalhd/libcrystalhd_if.h>
+
+#include "avcodec.h"
+#include "libavutil/imgutils.h"
+#include "libavutil/intreadwrite.h"
+
+/* Timeout parameter passed to DtsProcOutput() in us */
+#define OUTPUT_PROC_TIMEOUT 50
+/* Step between fake timestamps passed to hardware in units of 100ns */
+#define TIMESTAMP_UNIT 100000
+/* Initial value in us of the wait in decode() */
+#define BASE_WAIT 10000
+/* Increment in us to adjust wait in decode() */
+#define WAIT_UNIT 1000
+
+
+/*****************************************************************************
+ * Module private data
+ ****************************************************************************/
+
+typedef enum {
+ RET_ERROR = -1,
+ RET_OK = 0,
+ RET_COPY_AGAIN = 1,
+ RET_SKIP_NEXT_COPY = 2,
+} CopyRet;
+
+typedef struct OpaqueList {
+ struct OpaqueList *next;
+ uint64_t fake_timestamp;
+ uint64_t reordered_opaque;
+} OpaqueList;
+
+typedef struct {
+ AVCodecContext *avctx;
+ AVFrame pic;
+ HANDLE dev;
+
+ uint8_t is_70012;
+ uint8_t *sps_pps_buf;
+ uint32_t sps_pps_size;
+ uint8_t is_nal;
+ uint8_t output_ready;
+ uint8_t need_second_field;
+ uint8_t skip_next_output;
+ uint64_t decode_wait;
+
+ uint64_t last_picture;
+
+ OpaqueList *head;
+ OpaqueList *tail;
+} CHDContext;
+
+
+/*****************************************************************************
+ * Helper functions
+ ****************************************************************************/
+
+static inline BC_MEDIA_SUBTYPE id2subtype(CHDContext *priv, enum CodecID id)
+{
+ switch (id) {
+ case CODEC_ID_MPEG4:
+ return BC_MSUBTYPE_DIVX;
+ case CODEC_ID_MSMPEG4V3:
+ return BC_MSUBTYPE_DIVX311;
+ case CODEC_ID_MPEG2VIDEO:
+ return BC_MSUBTYPE_MPEG2VIDEO;
+ case CODEC_ID_VC1:
+ return BC_MSUBTYPE_VC1;
+ case CODEC_ID_WMV3:
+ return BC_MSUBTYPE_WMV3;
+ case CODEC_ID_H264:
+ return priv->is_nal ? BC_MSUBTYPE_AVC1 : BC_MSUBTYPE_H264;
+ default:
+ return BC_MSUBTYPE_INVALID;
+ }
+}
+
+static inline void print_frame_info(CHDContext *priv, BC_DTS_PROC_OUT *output)
+{
+ av_log(priv->avctx, AV_LOG_VERBOSE, "\tYBuffSz: %u\n", output->YbuffSz);
+ av_log(priv->avctx, AV_LOG_VERBOSE, "\tYBuffDoneSz: %u\n",
+ output->YBuffDoneSz);
+ av_log(priv->avctx, AV_LOG_VERBOSE, "\tUVBuffDoneSz: %u\n",
+ output->UVBuffDoneSz);
+ av_log(priv->avctx, AV_LOG_VERBOSE, "\tTimestamp: %"PRIu64"\n",
+ output->PicInfo.timeStamp);
+ av_log(priv->avctx, AV_LOG_VERBOSE, "\tPicture Number: %u\n",
+ output->PicInfo.picture_number);
+ av_log(priv->avctx, AV_LOG_VERBOSE, "\tWidth: %u\n",
+ output->PicInfo.width);
+ av_log(priv->avctx, AV_LOG_VERBOSE, "\tHeight: %u\n",
+ output->PicInfo.height);
+ av_log(priv->avctx, AV_LOG_VERBOSE, "\tChroma: 0x%03x\n",
+ output->PicInfo.chroma_format);
+ av_log(priv->avctx, AV_LOG_VERBOSE, "\tPulldown: %u\n",
+ output->PicInfo.pulldown);
+ av_log(priv->avctx, AV_LOG_VERBOSE, "\tFlags: 0x%08x\n",
+ output->PicInfo.flags);
+ av_log(priv->avctx, AV_LOG_VERBOSE, "\tFrame Rate/Res: %u\n",
+ output->PicInfo.frame_rate);
+ av_log(priv->avctx, AV_LOG_VERBOSE, "\tAspect Ratio: %u\n",
+ output->PicInfo.aspect_ratio);
+ av_log(priv->avctx, AV_LOG_VERBOSE, "\tColor Primaries: %u\n",
+ output->PicInfo.colour_primaries);
+ av_log(priv->avctx, AV_LOG_VERBOSE, "\tMetaData: %u\n",
+ output->PicInfo.picture_meta_payload);
+ av_log(priv->avctx, AV_LOG_VERBOSE, "\tSession Number: %u\n",
+ output->PicInfo.sess_num);
+ av_log(priv->avctx, AV_LOG_VERBOSE, "\tycom: %u\n",
+ output->PicInfo.ycom);
+ av_log(priv->avctx, AV_LOG_VERBOSE, "\tCustom Aspect: %u\n",
+ output->PicInfo.custom_aspect_ratio_width_height);
+ av_log(priv->avctx, AV_LOG_VERBOSE, "\tFrames to Drop: %u\n",
+ output->PicInfo.n_drop);
+ av_log(priv->avctx, AV_LOG_VERBOSE, "\tH264 Valid Fields: 0x%08x\n",
+ output->PicInfo.other.h264.valid);
+}
+
+
+/*****************************************************************************
+ * OpaqueList functions
+ ****************************************************************************/
+
+static uint64_t opaque_list_push(CHDContext *priv, uint64_t reordered_opaque)
+{
+ OpaqueList *newNode = av_mallocz(sizeof (OpaqueList));
+ if (!newNode) {
+ av_log(priv->avctx, AV_LOG_ERROR,
+ "Unable to allocate new node in OpaqueList.\n");
+ return 0;
+ }
+ if (!priv->head) {
+ newNode->fake_timestamp = TIMESTAMP_UNIT;
+ priv->head = newNode;
+ } else {
+ newNode->fake_timestamp = priv->tail->fake_timestamp + TIMESTAMP_UNIT;
+ priv->tail->next = newNode;
+ }
+ priv->tail = newNode;
+ newNode->reordered_opaque = reordered_opaque;
+
+ return newNode->fake_timestamp;
+}
+
+/*
+ * The OpaqueList is built in decode order, while elements will be removed
+ * in presentation order. If frames are reordered, this means we must be
+ * able to remove elements that are not the first element.
+ */
+static uint64_t opaque_list_pop(CHDContext *priv, uint64_t fake_timestamp)
+{
+ OpaqueList *node = priv->head;
+
+ if (!priv->head) {
+ av_log(priv->avctx, AV_LOG_ERROR,
+ "CrystalHD: Attempted to query non-existent timestamps.\n");
+ return AV_NOPTS_VALUE;
+ }
+
+ /*
+ * The first element is special-cased because we have to manipulate
+ * the head pointer rather than the previous element in the list.
+ */
+ if (priv->head->fake_timestamp == fake_timestamp) {
+ uint64_t reordered_opaque = node->reordered_opaque;
+ priv->head = node->next;
+ av_free(node);
+
+ if (!priv->head->next)
+ priv->tail = priv->head;
+
+ return reordered_opaque;
+ }
+
+ /*
+ * The list is processed at arm's length so that we have the
+ * previous element available to rewrite its next pointer.
+ */
+ while (node->next) {
+ OpaqueList *next = node->next;
+ if (next->fake_timestamp == fake_timestamp) {
+ uint64_t reordered_opaque = next->reordered_opaque;
+ node->next = next->next;
+ av_free(next);
+
+ if (!node->next)
+ priv->tail = node;
+
+ return reordered_opaque;
+ } else {
+ node = next;
+ }
+ }
+
+ av_log(priv->avctx, AV_LOG_VERBOSE,
+ "CrystalHD: Couldn't match fake_timestamp.\n");
+ return AV_NOPTS_VALUE;
+}
+
+
+/*****************************************************************************
+ * Video decoder API function definitions
+ ****************************************************************************/
+
+static void flush(AVCodecContext *avctx)
+{
+ CHDContext *priv = avctx->priv_data;
+
+ avctx->has_b_frames = 0;
+ priv->last_picture = -1;
+ priv->output_ready = 0;
+ priv->need_second_field = 0;
+ priv->skip_next_output = 0;
+ priv->decode_wait = BASE_WAIT;
+
+ if (priv->pic.data[0])
+ avctx->release_buffer(avctx, &priv->pic);
+
+ /* Flush mode 4 flushes all software and hardware buffers. */
+ DtsFlushInput(priv->dev, 4);
+}
+
+
+static av_cold int uninit(AVCodecContext *avctx)
+{
+ CHDContext *priv = avctx->priv_data;
+ HANDLE device;
+
+ device = priv->dev;
+ DtsStopDecoder(device);
+ DtsCloseDecoder(device);
+ DtsDeviceClose(device);
+
+ av_free(priv->sps_pps_buf);
+
+ if (priv->pic.data[0])
+ avctx->release_buffer(avctx, &priv->pic);
+
+ if (priv->head) {
+ OpaqueList *node = priv->head;
+ while (node) {
+ OpaqueList *next = node->next;
+ av_free(node);
+ node = next;
+ }
+ }
+
+ return 0;
+}
+
+
+static av_cold int init(AVCodecContext *avctx)
+{
+ CHDContext* priv;
+ BC_STATUS ret;
+ BC_INFO_CRYSTAL version;
+ BC_INPUT_FORMAT format = {
+ .FGTEnable = FALSE,
+ .Progressive = TRUE,
+ .OptFlags = 0x80000000 | vdecFrameRate59_94 | 0x40,
+ .width = avctx->width,
+ .height = avctx->height,
+ };
+
+ BC_MEDIA_SUBTYPE subtype;
+
+ uint32_t mode = DTS_PLAYBACK_MODE |
+ DTS_LOAD_FILE_PLAY_FW |
+ DTS_SKIP_TX_CHK_CPB |
+ DTS_PLAYBACK_DROP_RPT_MODE |
+ DTS_SINGLE_THREADED_MODE |
+ DTS_DFLT_RESOLUTION(vdecRESOLUTION_1080p23_976);
+
+ av_log(avctx, AV_LOG_VERBOSE, "CrystalHD Init for %s\n",
+ avctx->codec->name);
+
+ avctx->pix_fmt = PIX_FMT_YUYV422;
+
+ /* Initialize the library */
+ priv = avctx->priv_data;
+ priv->avctx = avctx;
+ priv->is_nal = avctx->extradata_size > 0 && *(avctx->extradata) == 1;
+ priv->last_picture = -1;
+ priv->decode_wait = BASE_WAIT;
+
+ subtype = id2subtype(priv, avctx->codec->id);
+ switch (subtype) {
+ case BC_MSUBTYPE_AVC1:
+ {
+ uint8_t *dummy_p;
+ int dummy_int;
+ AVBitStreamFilterContext *bsfc;
+
+ uint32_t orig_data_size = avctx->extradata_size;
+ uint8_t *orig_data = av_malloc(orig_data_size);
+ if (!orig_data) {
+ av_log(avctx, AV_LOG_ERROR,
+ "Failed to allocate copy of extradata\n");
+ return AVERROR(ENOMEM);
+ }
+ memcpy(orig_data, avctx->extradata, orig_data_size);
+
+
+ bsfc = av_bitstream_filter_init("h264_mp4toannexb");
+ if (!bsfc) {
+ av_log(avctx, AV_LOG_ERROR,
+ "Cannot open the h264_mp4toannexb BSF!\n");
+ av_free(orig_data);
+ return AVERROR_BSF_NOT_FOUND;
+ }
+ av_bitstream_filter_filter(bsfc, avctx, NULL, &dummy_p,
+ &dummy_int, NULL, 0, 0);
+ av_bitstream_filter_close(bsfc);
+
+ priv->sps_pps_buf = avctx->extradata;
+ priv->sps_pps_size = avctx->extradata_size;
+ avctx->extradata = orig_data;
+ avctx->extradata_size = orig_data_size;
+
+ format.pMetaData = priv->sps_pps_buf;
+ format.metaDataSz = priv->sps_pps_size;
+ format.startCodeSz = (avctx->extradata[4] & 0x03) + 1;
+ }
+ break;
+ case BC_MSUBTYPE_H264:
+ format.startCodeSz = 4;
+ // Fall-through
+ case BC_MSUBTYPE_VC1:
+ case BC_MSUBTYPE_WVC1:
+ case BC_MSUBTYPE_WMV3:
+ case BC_MSUBTYPE_WMVA:
+ case BC_MSUBTYPE_MPEG2VIDEO:
+ case BC_MSUBTYPE_DIVX:
+ case BC_MSUBTYPE_DIVX311:
+ format.pMetaData = avctx->extradata;
+ format.metaDataSz = avctx->extradata_size;
+ break;
+ default:
+ av_log(avctx, AV_LOG_ERROR, "CrystalHD: Unknown codec name\n");
+ return AVERROR(EINVAL);
+ }
+ format.mSubtype = subtype;
+
+ /* Get a decoder instance */
+ av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: starting up\n");
+ // Initialize the Link and Decoder devices
+ ret = DtsDeviceOpen(&priv->dev, mode);
+ if (ret != BC_STS_SUCCESS) {
+ av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: DtsDeviceOpen failed\n");
+ goto fail;
+ }
+
+ ret = DtsCrystalHDVersion(priv->dev, &version);
+ if (ret != BC_STS_SUCCESS) {
+ av_log(avctx, AV_LOG_VERBOSE,
+ "CrystalHD: DtsCrystalHDVersion failed\n");
+ goto fail;
+ }
+ priv->is_70012 = version.device == 0;
+
+ if (priv->is_70012 &&
+ (subtype == BC_MSUBTYPE_DIVX || subtype == BC_MSUBTYPE_DIVX311)) {
+ av_log(avctx, AV_LOG_VERBOSE,
+ "CrystalHD: BCM70012 doesn't support MPEG4-ASP/DivX/Xvid\n");
+ goto fail;
+ }
+
+ ret = DtsSetInputFormat(priv->dev, &format);
+ if (ret != BC_STS_SUCCESS) {
+ av_log(avctx, AV_LOG_ERROR, "CrystalHD: SetInputFormat failed\n");
+ goto fail;
+ }
+
+ ret = DtsOpenDecoder(priv->dev, BC_STREAM_TYPE_ES);
+ if (ret != BC_STS_SUCCESS) {
+ av_log(avctx, AV_LOG_ERROR, "CrystalHD: DtsOpenDecoder failed\n");
+ goto fail;
+ }
+
+ ret = DtsSetColorSpace(priv->dev, OUTPUT_MODE422_YUY2);
+ if (ret != BC_STS_SUCCESS) {
+ av_log(avctx, AV_LOG_ERROR, "CrystalHD: DtsSetColorSpace failed\n");
+ goto fail;
+ }
+ ret = DtsStartDecoder(priv->dev);
+ if (ret != BC_STS_SUCCESS) {
+ av_log(avctx, AV_LOG_ERROR, "CrystalHD: DtsStartDecoder failed\n");
+ goto fail;
+ }
+ ret = DtsStartCapture(priv->dev);
+ if (ret != BC_STS_SUCCESS) {
+ av_log(avctx, AV_LOG_ERROR, "CrystalHD: DtsStartCapture failed\n");
+ goto fail;
+ }
+
+ av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: Init complete.\n");
+
+ return 0;
+
+ fail:
+ uninit(avctx);
+ return -1;
+}
+
+
+/*
+ * The CrystalHD doesn't report interlaced H.264 content in a way that allows
+ * us to distinguish between specific cases that require different handling.
+ * So, for now, we have to hard-code the behaviour we want.
+ *
+ * The default behaviour is to assume MBAFF with input and output fieldpairs.
+ *
+ * Define ASSUME_PAFF_OVER_MBAFF to treat input as PAFF with separate input
+ * and output fields.
+ *
+ * Define ASSUME_TWO_INPUTS_ONE_OUTPUT to treat input as separate fields but
+ * output as a single fieldpair.
+ *
+ * Define both to mess up your playback.
+ */
+#define ASSUME_PAFF_OVER_MBAFF 0
+#define ASSUME_TWO_INPUTS_ONE_OUTPUT 0
+static inline CopyRet copy_frame(AVCodecContext *avctx,
+ BC_DTS_PROC_OUT *output,
+ void *data, int *data_size,
+ uint8_t second_field)
+{
+ BC_STATUS ret;
+ BC_DTS_STATUS decoder_status;
+ uint8_t is_paff;
+ uint8_t next_frame_same;
+ uint8_t interlaced;
+
+ CHDContext *priv = avctx->priv_data;
+
+ uint8_t bottom_field = (output->PicInfo.flags & VDEC_FLAG_BOTTOMFIELD) ==
+ VDEC_FLAG_BOTTOMFIELD;
+ uint8_t bottom_first = !!(output->PicInfo.flags & VDEC_FLAG_BOTTOM_FIRST);
+
+ int width = output->PicInfo.width;
+ int height = output->PicInfo.height;
+ int bwidth;
+ uint8_t *src = output->Ybuff;
+ int sStride;
+ uint8_t *dst;
+ int dStride;
+
+ ret = DtsGetDriverStatus(priv->dev, &decoder_status);
+ if (ret != BC_STS_SUCCESS) {
+ av_log(avctx, AV_LOG_ERROR,
+ "CrystalHD: GetDriverStatus failed: %u\n", ret);
+ return RET_ERROR;
+ }
+
+ is_paff = ASSUME_PAFF_OVER_MBAFF ||
+ !(output->PicInfo.flags & VDEC_FLAG_UNKNOWN_SRC);
+ next_frame_same = output->PicInfo.picture_number ==
+ (decoder_status.picNumFlags & ~0x40000000);
+ interlaced = ((output->PicInfo.flags &
+ VDEC_FLAG_INTERLACED_SRC) && is_paff) ||
+ next_frame_same || bottom_field || second_field;
+
+ av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: next_frame_same: %u | %u | %u\n",
+ next_frame_same, output->PicInfo.picture_number,
+ decoder_status.picNumFlags & ~0x40000000);
+
+ if (priv->pic.data[0] && !priv->need_second_field)
+ avctx->release_buffer(avctx, &priv->pic);
+
+ priv->need_second_field = interlaced && !priv->need_second_field;
+
+ priv->pic.buffer_hints = FF_BUFFER_HINTS_VALID | FF_BUFFER_HINTS_PRESERVE |
+ FF_BUFFER_HINTS_REUSABLE;
+ if (!priv->pic.data[0]) {
+ if (avctx->get_buffer(avctx, &priv->pic) < 0) {
+ av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
+ return RET_ERROR;
+ }
+ }
+
+ bwidth = av_image_get_linesize(avctx->pix_fmt, width, 0);
+ if (priv->is_70012) {
+ int pStride;
+
+ if (width <= 720)
+ pStride = 720;
+ else if (width <= 1280)
+ pStride = 1280;
+ else if (width <= 1080)
+ pStride = 1080;
+ sStride = av_image_get_linesize(avctx->pix_fmt, pStride, 0);
+ } else {
+ sStride = bwidth;
+ }
+
+ dStride = priv->pic.linesize[0];
+ dst = priv->pic.data[0];
+
+ av_log(priv->avctx, AV_LOG_VERBOSE, "CrystalHD: Copying out frame\n");
+
+ if (interlaced) {
+ int dY = 0;
+ int sY = 0;
+
+ height /= 2;
+ if (bottom_field) {
+ av_log(priv->avctx, AV_LOG_VERBOSE, "Interlaced: bottom field\n");
+ dY = 1;
+ } else {
+ av_log(priv->avctx, AV_LOG_VERBOSE, "Interlaced: top field\n");
+ dY = 0;
+ }
+
+ for (sY = 0; sY < height; dY++, sY++) {
+ memcpy(&(dst[dY * dStride]), &(src[sY * sStride]), bwidth);
+ if (interlaced)
+ dY++;
+ }
+ } else {
+ av_image_copy_plane(dst, dStride, src, sStride, bwidth, height);
+ }
+
+ priv->pic.interlaced_frame = interlaced;
+ if (interlaced)
+ priv->pic.top_field_first = !bottom_first;
+
+ if (output->PicInfo.timeStamp != 0) {
+ priv->pic.pkt_pts = opaque_list_pop(priv, output->PicInfo.timeStamp);
+ av_log(avctx, AV_LOG_VERBOSE, "output \"pts\": %"PRIu64"\n",
+ priv->pic.pkt_pts);
+ }
+
+ if (!priv->need_second_field) {
+ *data_size = sizeof(AVFrame);
+ *(AVFrame *)data = priv->pic;
+ }
+
+ if (ASSUME_TWO_INPUTS_ONE_OUTPUT &&
+ output->PicInfo.flags & VDEC_FLAG_UNKNOWN_SRC) {
+ av_log(priv->avctx, AV_LOG_VERBOSE, "Fieldpair from two packets.\n");
+ return RET_SKIP_NEXT_COPY;
+ }
+
+ return RET_OK;
+}
+
+
+static inline CopyRet receive_frame(AVCodecContext *avctx,
+ void *data, int *data_size,
+ uint8_t second_field)
+{
+ BC_STATUS ret;
+ BC_DTS_PROC_OUT output = {
+ .PicInfo.width = avctx->width,
+ .PicInfo.height = avctx->height,
+ };
+ CHDContext *priv = avctx->priv_data;
+ HANDLE dev = priv->dev;
+
+ *data_size = 0;
+
+ // Request decoded data from the driver
+ ret = DtsProcOutputNoCopy(dev, OUTPUT_PROC_TIMEOUT, &output);
+ if (ret == BC_STS_FMT_CHANGE) {
+ av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: Initial format change\n");
+ avctx->width = output.PicInfo.width;
+ avctx->height = output.PicInfo.height;
+ return RET_COPY_AGAIN;
+ } else if (ret == BC_STS_SUCCESS) {
+ int copy_ret = -1;
+ if (output.PoutFlags & BC_POUT_FLAGS_PIB_VALID) {
+ if (priv->last_picture == -1) {
+ /*
+ * Init to one less, so that the incrementing code doesn't
+ * need to be special-cased.
+ */
+ priv->last_picture = output.PicInfo.picture_number - 1;
+ }
+
+ if (avctx->codec->id == CODEC_ID_MPEG4 &&
+ output.PicInfo.timeStamp == 0) {
+ av_log(avctx, AV_LOG_VERBOSE,
+ "CrystalHD: Not returning packed frame twice.\n");
+ priv->last_picture++;
+ DtsReleaseOutputBuffs(dev, NULL, FALSE);
+ return RET_COPY_AGAIN;
+ }
+
+ print_frame_info(priv, &output);
+
+ if (priv->last_picture + 1 < output.PicInfo.picture_number) {
+ av_log(avctx, AV_LOG_WARNING,
+ "CrystalHD: Picture Number discontinuity\n");
+ /*
+ * Have we lost frames? If so, we need to shrink the
+ * pipeline length appropriately.
+ *
+ * XXX: I have no idea what the semantics of this situation
+ * are so I don't even know if we've lost frames or which
+ * ones.
+ *
+ * In any case, only warn the first time.
+ */
+ priv->last_picture = output.PicInfo.picture_number - 1;
+ }
+
+ copy_ret = copy_frame(avctx, &output, data, data_size, second_field);
+ if (*data_size > 0) {
+ avctx->has_b_frames--;
+ priv->last_picture++;
+ av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: Pipeline length: %u\n",
+ avctx->has_b_frames);
+ }
+ } else {
+ /*
+ * An invalid frame has been consumed.
+ */
+ av_log(avctx, AV_LOG_ERROR, "CrystalHD: ProcOutput succeeded with "
+ "invalid PIB\n");
+ avctx->has_b_frames--;
+ copy_ret = RET_OK;
+ }
+ DtsReleaseOutputBuffs(dev, NULL, FALSE);
+
+ return copy_ret;
+ } else if (ret == BC_STS_BUSY) {
+ return RET_COPY_AGAIN;
+ } else {
+ av_log(avctx, AV_LOG_ERROR, "CrystalHD: ProcOutput failed %d\n", ret);
+ return RET_ERROR;
+ }
+}
+
+
+static int decode(AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt)
+{
+ BC_STATUS ret;
+ BC_DTS_STATUS decoder_status;
+ CopyRet rec_ret;
+ CHDContext *priv = avctx->priv_data;
+ HANDLE dev = priv->dev;
+ int len = avpkt->size;
+
+ av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: decode_frame\n");
+
+ if (len) {
+ int32_t tx_free = (int32_t)DtsTxFreeSize(dev);
+ if (len < tx_free - 1024) {
+ /*
+ * Despite being notionally opaque, either libcrystalhd or
+ * the hardware itself will mangle pts values that are too
+ * small or too large. The docs claim it should be in units
+ * of 100ns. Given that we're nominally dealing with a black
+ * box on both sides, any transform we do has no guarantee of
+ * avoiding mangling so we need to build a mapping to values
+ * we know will not be mangled.
+ */
+ uint64_t pts = opaque_list_push(priv, avctx->pkt->pts);
+ if (!pts) {
+ return AVERROR(ENOMEM);
+ }
+ av_log(priv->avctx, AV_LOG_VERBOSE,
+ "input \"pts\": %"PRIu64"\n", pts);
+ ret = DtsProcInput(dev, avpkt->data, len, pts, 0);
+ if (ret == BC_STS_BUSY) {
+ av_log(avctx, AV_LOG_WARNING,
+ "CrystalHD: ProcInput returned busy\n");
+ usleep(BASE_WAIT);
+ return AVERROR(EBUSY);
+ } else if (ret != BC_STS_SUCCESS) {
+ av_log(avctx, AV_LOG_ERROR,
+ "CrystalHD: ProcInput failed: %u\n", ret);
+ return -1;
+ }
+ avctx->has_b_frames++;
+ } else {
+ av_log(avctx, AV_LOG_WARNING, "CrystalHD: Input buffer full\n");
+ len = 0; // We didn't consume any bytes.
+ }
+ } else {
+ av_log(avctx, AV_LOG_INFO, "CrystalHD: No more input data\n");
+ }
+
+ if (priv->skip_next_output) {
+ av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: Skipping next output.\n");
+ priv->skip_next_output = 0;
+ avctx->has_b_frames--;
+ return len;
+ }
+
+ ret = DtsGetDriverStatus(dev, &decoder_status);
+ if (ret != BC_STS_SUCCESS) {
+ av_log(avctx, AV_LOG_ERROR, "CrystalHD: GetDriverStatus failed\n");
+ return -1;
+ }
+
+ /*
+ * No frames ready. Don't try to extract.
+ *
+ * Empirical testing shows that ReadyListCount can be a damn lie,
+ * and ProcOut still fails when count > 0. The same testing showed
+ * that two more iterations were needed before ProcOutput would
+ * succeed.
+ */
+ if (priv->output_ready < 2) {
+ if (decoder_status.ReadyListCount != 0)
+ priv->output_ready++;
+ usleep(BASE_WAIT);
+ av_log(avctx, AV_LOG_INFO, "CrystalHD: Filling pipeline.\n");
+ return len;
+ } else if (decoder_status.ReadyListCount == 0) {
+ /*
+ * After the pipeline is established, if we encounter a lack of frames
+ * that probably means we're not giving the hardware enough time to
+ * decode them, so start increasing the wait time at the end of a
+ * decode call.
+ */
+ usleep(BASE_WAIT);
+ priv->decode_wait += WAIT_UNIT;
+ av_log(avctx, AV_LOG_INFO, "CrystalHD: No frames ready. Returning\n");
+ return len;
+ }
+
+ do {
+ rec_ret = receive_frame(avctx, data, data_size, 0);
+ if (rec_ret == 0 && *data_size == 0) {
+ if (avctx->codec->id == CODEC_ID_H264) {
+ /*
+ * This case is for when the encoded fields are stored
+ * separately and we get a separate avpkt for each one. To keep
+ * the pipeline stable, we should return nothing and wait for
+ * the next time round to grab the second field.
+ * H.264 PAFF is an example of this.
+ */
+ av_log(avctx, AV_LOG_VERBOSE, "Returning after first field.\n");
+ avctx->has_b_frames--;
+ } else {
+ /*
+ * This case is for when the encoded fields are stored in a
+ * single avpkt but the hardware returns then separately. Unless
+ * we grab the second field before returning, we'll slip another
+ * frame in the pipeline and if that happens a lot, we're sunk.
+ * So we have to get that second field now.
+ * Interlaced mpeg2 and vc1 are examples of this.
+ */
+ av_log(avctx, AV_LOG_VERBOSE, "Trying to get second field.\n");
+ while (1) {
+ usleep(priv->decode_wait);
+ ret = DtsGetDriverStatus(dev, &decoder_status);
+ if (ret == BC_STS_SUCCESS &&
+ decoder_status.ReadyListCount > 0) {
+ rec_ret = receive_frame(avctx, data, data_size, 1);
+ if ((rec_ret == 0 && *data_size > 0) ||
+ rec_ret == RET_ERROR)
+ break;
+ }
+ }
+ av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: Got second field.\n");
+ }
+ } else if (rec_ret == RET_SKIP_NEXT_COPY) {
+ /*
+ * Two input packets got turned into a field pair. Gawd.
+ */
+ av_log(avctx, AV_LOG_VERBOSE,
+ "Don't output on next decode call.\n");
+ priv->skip_next_output = 1;
+ }
+ /*
+ * If rec_ret == RET_COPY_AGAIN, that means that either we just handled
+ * a FMT_CHANGE event and need to go around again for the actual frame,
+ * we got a busy status and need to try again, or we're dealing with
+ * packed b-frames, where the hardware strangely returns the packed
+ * p-frame twice. We choose to keep the second copy as it carries the
+ * valid pts.
+ */
+ } while (rec_ret == RET_COPY_AGAIN);
+ usleep(priv->decode_wait);
+ return len;
+}
+
+
+#if CONFIG_H264_CRYSTALHD_DECODER
+AVCodec ff_h264_crystalhd_decoder = {
+ .name = "h264_crystalhd",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = CODEC_ID_H264,
+ .priv_data_size = sizeof(CHDContext),
+ .init = init,
+ .close = uninit,
+ .decode = decode,
+ .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_EXPERIMENTAL,
+ .flush = flush,
+ .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (CrystalHD acceleration)"),
+ .pix_fmts = (const enum PixelFormat[]){PIX_FMT_YUYV422, PIX_FMT_NONE},
+};
+#endif
+
+#if CONFIG_MPEG2_CRYSTALHD_DECODER
+AVCodec ff_mpeg2_crystalhd_decoder = {
+ .name = "mpeg2_crystalhd",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = CODEC_ID_MPEG2VIDEO,
+ .priv_data_size = sizeof(CHDContext),
+ .init = init,
+ .close = uninit,
+ .decode = decode,
+ .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_EXPERIMENTAL,
+ .flush = flush,
+ .long_name = NULL_IF_CONFIG_SMALL("MPEG-2 Video (CrystalHD acceleration)"),
+ .pix_fmts = (const enum PixelFormat[]){PIX_FMT_YUYV422, PIX_FMT_NONE},
+};
+#endif
+
+#if CONFIG_MPEG4_CRYSTALHD_DECODER
+AVCodec ff_mpeg4_crystalhd_decoder = {
+ .name = "mpeg4_crystalhd",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = CODEC_ID_MPEG4,
+ .priv_data_size = sizeof(CHDContext),
+ .init = init,
+ .close = uninit,
+ .decode = decode,
+ .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_EXPERIMENTAL,
+ .flush = flush,
+ .long_name = NULL_IF_CONFIG_SMALL("MPEG-4 Part 2 (CrystalHD acceleration)"),
+ .pix_fmts = (const enum PixelFormat[]){PIX_FMT_YUYV422, PIX_FMT_NONE},
+};
+#endif
+
+#if CONFIG_MSMPEG4_CRYSTALHD_DECODER
+AVCodec ff_msmpeg4_crystalhd_decoder = {
+ .name = "msmpeg4_crystalhd",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = CODEC_ID_MSMPEG4V3,
+ .priv_data_size = sizeof(CHDContext),
+ .init = init,
+ .close = uninit,
+ .decode = decode,
+ .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_EXPERIMENTAL,
+ .flush = flush,
+ .long_name = NULL_IF_CONFIG_SMALL("MPEG-4 Part 2 Microsoft variant version 3 (CrystalHD acceleration)"),
+ .pix_fmts = (const enum PixelFormat[]){PIX_FMT_YUYV422, PIX_FMT_NONE},
+};
+#endif
+
+#if CONFIG_VC1_CRYSTALHD_DECODER
+AVCodec ff_vc1_crystalhd_decoder = {
+ .name = "vc1_crystalhd",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = CODEC_ID_VC1,
+ .priv_data_size = sizeof(CHDContext),
+ .init = init,
+ .close = uninit,
+ .decode = decode,
+ .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_EXPERIMENTAL,
+ .flush = flush,
+ .long_name = NULL_IF_CONFIG_SMALL("SMPTE VC-1 (CrystalHD acceleration)"),
+ .pix_fmts = (const enum PixelFormat[]){PIX_FMT_YUYV422, PIX_FMT_NONE},
+};
+#endif
+
+#if CONFIG_WMV3_CRYSTALHD_DECODER
+AVCodec ff_wmv3_crystalhd_decoder = {
+ .name = "wmv3_crystalhd",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = CODEC_ID_WMV3,
+ .priv_data_size = sizeof(CHDContext),
+ .init = init,
+ .close = uninit,
+ .decode = decode,
+ .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_EXPERIMENTAL,
+ .flush = flush,
+ .long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 9 (CrystalHD acceleration)"),
+ .pix_fmts = (const enum PixelFormat[]){PIX_FMT_YUYV422, PIX_FMT_NONE},
+};
+#endif
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