#undef COPY
}
-/* init common structure for both encoder and decoder */
+/**
+ * sets the given MpegEncContext to common defaults (same for encoding and decoding).
+ * the changed fields will not depend upon the prior state of the MpegEncContext.
+ */
+static void MPV_common_defaults(MpegEncContext *s){
+ s->y_dc_scale_table=
+ s->c_dc_scale_table= ff_mpeg1_dc_scale_table;
+ s->chroma_qscale_table= ff_default_chroma_qscale_table;
+ s->progressive_frame= 1;
+ s->progressive_sequence= 1;
+ s->picture_structure= PICT_FRAME;
+
+ s->coded_picture_number = 0;
+ s->picture_number = 0;
+ s->input_picture_number = 0;
+
+ s->picture_in_gop_number = 0;
+}
+
+/**
+ * sets the given MpegEncContext to defaults for decoding.
+ * the changed fields will not depend upon the prior state of the MpegEncContext.
+ */
+void MPV_decode_defaults(MpegEncContext *s){
+ MPV_common_defaults(s);
+}
+
+/**
+ * sets the given MpegEncContext to defaults for encoding.
+ * the changed fields will not depend upon the prior state of the MpegEncContext.
+ */
+void MPV_encode_defaults(MpegEncContext *s){
+ static int done=0;
+
+ MPV_common_defaults(s);
+
+ if(!done){
+ int i;
+ done=1;
+
+ default_mv_penalty= av_mallocz( sizeof(uint8_t)*(MAX_FCODE+1)*(2*MAX_MV+1) );
+ memset(default_mv_penalty, 0, sizeof(uint8_t)*(MAX_FCODE+1)*(2*MAX_MV+1));
+ memset(default_fcode_tab , 0, sizeof(uint8_t)*(2*MAX_MV+1));
+
+ for(i=-16; i<16; i++){
+ default_fcode_tab[i + MAX_MV]= 1;
+ }
+ }
+ s->me.mv_penalty= default_mv_penalty;
+ s->fcode_tab= default_fcode_tab;
+}
+
+/**
+ * init common structure for both encoder and decoder.
+ * this assumes that some variables like width/height are already set
+ */
int MPV_common_init(MpegEncContext *s)
{
int y_size, c_size, yc_size, i, mb_array_size, mv_table_size, x, y;
s->block_wrap[3]= s->mb_width*2 + 2;
s->block_wrap[4]=
s->block_wrap[5]= s->mb_width + 2;
-
- s->y_dc_scale_table=
- s->c_dc_scale_table= ff_mpeg1_dc_scale_table;
- s->chroma_qscale_table= ff_default_chroma_qscale_table;
- if( s->codec_id != CODEC_ID_MPEG1VIDEO &&
- s->codec_id != CODEC_ID_MPEG2VIDEO)
- {
- /* default structure is frame */
- s->progressive_frame= 1;
- s->picture_structure= PICT_FRAME;
-
- s->y_dc_scale_table=
- s->c_dc_scale_table= ff_mpeg1_dc_scale_table;
- if (!s->encoding)
- s->progressive_sequence= 1;
- }
- s->coded_picture_number = 0;
-
+
y_size = (2 * s->mb_width + 2) * (2 * s->mb_height + 2);
c_size = (s->mb_width + 2) * (s->mb_height + 2);
yc_size = y_size + 2 * c_size;
-
+
/* convert fourcc to upper case */
s->avctx->codec_tag= toupper( s->avctx->codec_tag &0xFF)
+ (toupper((s->avctx->codec_tag>>8 )&0xFF)<<8 )
CHECKED_ALLOCZ(s->mbintra_table, mb_array_size);
memset(s->mbintra_table, 1, mb_array_size);
- /* default structure is frame */
- s->picture_structure = PICT_FRAME;
-
/* init macroblock skip table */
CHECKED_ALLOCZ(s->mbskip_table, mb_array_size+2);
//Note the +1 is for a quicker mpeg4 slice_end detection
MpegEncContext *s = avctx->priv_data;
int i, dummy;
int chroma_h_shift, chroma_v_shift;
+
+ MPV_encode_defaults(s);
avctx->pix_fmt = PIX_FMT_YUV420P; // FIXME
return -1;
}
- { /* set up some save defaults, some codecs might override them later */
- static int done=0;
- if(!done){
- int i;
- done=1;
-
- default_mv_penalty= av_mallocz( sizeof(uint8_t)*(MAX_FCODE+1)*(2*MAX_MV+1) );
- memset(default_mv_penalty, 0, sizeof(uint8_t)*(MAX_FCODE+1)*(2*MAX_MV+1));
- memset(default_fcode_tab , 0, sizeof(uint8_t)*(2*MAX_MV+1));
-
- for(i=-16; i<16; i++){
- default_fcode_tab[i + MAX_MV]= 1;
- }
- }
- }
- s->me.mv_penalty= default_mv_penalty;
- s->fcode_tab= default_fcode_tab;
-
- /* dont use mv_penalty table for crap MV as it would be confused */
- //FIXME remove after fixing / removing old ME
- if (s->me_method < ME_EPZS) s->me.mv_penalty = default_mv_penalty;
-
s->encoding = 1;
/* init */
ff_mpeg1_encode_init(s);
#endif
- /* init default q matrix */
+ /* init q matrix */
for(i=0;i<64;i++) {
int j= s->dsp.idct_permutation[i];
#ifdef CONFIG_RISKY
if(ff_rate_control_init(s) < 0)
return -1;
- s->picture_number = 0;
- s->input_picture_number = 0;
- s->picture_in_gop_number = 0;
/* motion detector init */
s->f_code = 1;
s->b_code = 1;
-
+
return 0;
}