static int vaapi_mpeg4_start_frame(AVCodecContext *avctx, av_unused const uint8_t *buffer, av_unused uint32_t size)
{
MpegEncContext * const s = avctx->priv_data;
struct vaapi_context * const vactx = avctx->hwaccel_context;
VAPictureParameterBufferMPEG4 *pic_param;
VAIQMatrixBufferMPEG4 *iq_matrix;
int i;
av_dlog(avctx, "vaapi_mpeg4_start_frame()\n");
vactx->slice_param_size = sizeof(VASliceParameterBufferMPEG4);
/* Fill in VAPictureParameterBufferMPEG4 */
pic_param = ff_vaapi_alloc_pic_param(vactx, sizeof(VAPictureParameterBufferMPEG4));
if (!pic_param)
return -1;
pic_param->vop_width = s->width;
pic_param->vop_height = s->height;
pic_param->forward_reference_picture = VA_INVALID_ID;
pic_param->backward_reference_picture = VA_INVALID_ID;
pic_param->vol_fields.value = 0; /* reset all bits */
pic_param->vol_fields.bits.short_video_header = avctx->codec->id == AV_CODEC_ID_H263;
pic_param->vol_fields.bits.chroma_format = CHROMA_420;
pic_param->vol_fields.bits.interlaced = !s->progressive_sequence;
pic_param->vol_fields.bits.obmc_disable = 1;
pic_param->vol_fields.bits.sprite_enable = s->vol_sprite_usage;
pic_param->vol_fields.bits.sprite_warping_accuracy = s->sprite_warping_accuracy;
pic_param->vol_fields.bits.quant_type = s->mpeg_quant;
pic_param->vol_fields.bits.quarter_sample = s->quarter_sample;
pic_param->vol_fields.bits.data_partitioned = s->data_partitioning;
pic_param->vol_fields.bits.reversible_vlc = s->rvlc;
pic_param->vol_fields.bits.resync_marker_disable = !s->resync_marker;
pic_param->no_of_sprite_warping_points = s->num_sprite_warping_points;
for (i = 0; i < s->num_sprite_warping_points && i < 3; i++) {
pic_param->sprite_trajectory_du[i] = s->sprite_traj[i][0];
pic_param->sprite_trajectory_dv[i] = s->sprite_traj[i][1];
}
pic_param->quant_precision = s->quant_precision;
pic_param->vop_fields.value = 0; /* reset all bits */
pic_param->vop_fields.bits.vop_coding_type = s->pict_type - AV_PICTURE_TYPE_I;
pic_param->vop_fields.bits.backward_reference_vop_coding_type = s->pict_type == AV_PICTURE_TYPE_B ? s->next_picture.f.pict_type - AV_PICTURE_TYPE_I : 0;
pic_param->vop_fields.bits.vop_rounding_type = s->no_rounding;
pic_param->vop_fields.bits.intra_dc_vlc_thr = mpeg4_get_intra_dc_vlc_thr(s);
pic_param->vop_fields.bits.top_field_first = s->top_field_first;
pic_param->vop_fields.bits.alternate_vertical_scan_flag = s->alternate_scan;
pic_param->vop_fcode_forward = s->f_code;
pic_param->vop_fcode_backward = s->b_code;
pic_param->vop_time_increment_resolution = avctx->time_base.den;
pic_param->num_macroblocks_in_gob = s->mb_width * ff_h263_get_gob_height(s);
pic_param->num_gobs_in_vop = (s->mb_width * s->mb_height) / pic_param->num_macroblocks_in_gob;
pic_param->TRB = s->pb_time;
pic_param->TRD = s->pp_time;
if (s->pict_type == AV_PICTURE_TYPE_B)
pic_param->backward_reference_picture = ff_vaapi_get_surface_id(&s->next_picture);
if (s->pict_type != AV_PICTURE_TYPE_I)
pic_param->forward_reference_picture = ff_vaapi_get_surface_id(&s->last_picture);
/* Fill in VAIQMatrixBufferMPEG4 */
/* Only the first inverse quantisation method uses the weighting matrices */
if (pic_param->vol_fields.bits.quant_type) {
iq_matrix = ff_vaapi_alloc_iq_matrix(vactx, sizeof(VAIQMatrixBufferMPEG4));
if (!iq_matrix)
return -1;
iq_matrix->load_intra_quant_mat = 1;
iq_matrix->load_non_intra_quant_mat = 1;
for (i = 0; i < 64; i++) {
int n = s->dsp.idct_permutation[ff_zigzag_direct[i]];
iq_matrix->intra_quant_mat[i] = s->intra_matrix[n];
iq_matrix->non_intra_quant_mat[i] = s->inter_matrix[n];
}
}
return 0;
}
int ff_h263_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
const uint8_t *buf, int buf_size)
{
MpegEncContext *s = avctx->priv_data;
int ret;
AVFrame *pict = data;
#ifdef PRINT_FRAME_TIME
uint64_t time= rdtsc();
#endif
#ifdef DEBUG
av_log(avctx, AV_LOG_DEBUG, "*****frame %d size=%d\n", avctx->frame_number, buf_size);
if(buf_size>0)
av_log(avctx, AV_LOG_DEBUG, "bytes=%x %x %x %x\n", buf[0], buf[1], buf[2], buf[3]);
#endif
s->flags= avctx->flags;
s->flags2= avctx->flags2;
/* no supplementary picture */
if (buf_size == 0) {
/* special case for last picture */
if (s->low_delay==0 && s->next_picture_ptr) {
*pict= *(AVFrame*)s->next_picture_ptr;
s->next_picture_ptr= NULL;
*data_size = sizeof(AVFrame);
}
return 0;
}
retry:
init_get_bits(&s->gb, buf, buf_size*8);
s->bitstream_buffer_size=0;
if (!s->context_initialized) {
if (MPV_common_init(s) < 0) //we need the idct permutaton for reading a custom matrix
return -1;
}
/* We need to set current_picture_ptr before reading the header,
* otherwise we cannot store anyting in there */
if(s->current_picture_ptr==NULL || s->current_picture_ptr->data[0]){
int i= ff_find_unused_picture(s, 0);
s->current_picture_ptr= &s->picture[i];
}
ret = flv_h263_decode_picture_header(s);
if(ret==FRAME_SKIPPED) return get_consumed_bytes(s, buf_size);
/* skip if the header was thrashed */
if (ret < 0){
av_log(s->avctx, AV_LOG_ERROR, "header damaged\n");
return -1;
}
avctx->has_b_frames= !s->low_delay;
/* After H263 & mpeg4 header decode we have the height, width,*/
/* and other parameters. So then we could init the picture */
/* FIXME: By the way H263 decoder is evolving it should have */
/* an H263EncContext */
if ( s->width != avctx->coded_width
|| s->height != avctx->coded_height) {
/* H.263 could change picture size any time */
ParseContext pc= s->parse_context; //FIXME move these demuxng hack to avformat
s->parse_context.buffer=0;
MPV_common_end(s);
s->parse_context= pc;
}
if (!s->context_initialized) {
avcodec_set_dimensions(avctx, s->width, s->height);
goto retry;
}
if((s->codec_id==CODEC_ID_H263 || s->codec_id==CODEC_ID_H263P))
s->gob_index = ff_h263_get_gob_height(s);
// for hurry_up==5
s->current_picture.pict_type= s->pict_type;
s->current_picture.key_frame= s->pict_type == FF_I_TYPE;
/* skip B-frames if we don't have reference frames */
if(s->last_picture_ptr==NULL && (s->pict_type==FF_B_TYPE || s->dropable)) return get_consumed_bytes(s, buf_size);
/* skip b frames if we are in a hurry */
if(avctx->hurry_up && s->pict_type==FF_B_TYPE) return get_consumed_bytes(s, buf_size);
if( (avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type==FF_B_TYPE)
|| (avctx->skip_frame >= AVDISCARD_NONKEY && s->pict_type!=FF_I_TYPE)
|| avctx->skip_frame >= AVDISCARD_ALL)
return get_consumed_bytes(s, buf_size);
/* skip everything if we are in a hurry>=5 */
if(avctx->hurry_up>=5) return get_consumed_bytes(s, buf_size);
if(s->next_p_frame_damaged){
if(s->pict_type==FF_B_TYPE)
return get_consumed_bytes(s, buf_size);
else
s->next_p_frame_damaged=0;
}
if((s->avctx->flags2 & CODEC_FLAG2_FAST) && s->pict_type==FF_B_TYPE){
s->me.qpel_put= s->dsp.put_2tap_qpel_pixels_tab;
s->me.qpel_avg= s->dsp.avg_2tap_qpel_pixels_tab;
}else if((!s->no_rounding) || s->pict_type==FF_B_TYPE){
s->me.qpel_put= s->dsp.put_qpel_pixels_tab;
s->me.qpel_avg= s->dsp.avg_qpel_pixels_tab;
}else{
s->me.qpel_put= s->dsp.put_no_rnd_qpel_pixels_tab;
s->me.qpel_avg= s->dsp.avg_qpel_pixels_tab;
}
if(MPV_frame_start(s, avctx) < 0)
return -1;
/* decode each macroblock */
s->mb_x=0;
s->mb_y=0;
decode_slice(s);
while(s->mb_y<s->mb_height){
if(ff_h263_resync(s)<0)
break;
decode_slice(s);
}
intrax8_decoded:
MPV_frame_end(s);
assert(s->current_picture.pict_type == s->current_picture_ptr->pict_type);
assert(s->current_picture.pict_type == s->pict_type);
if (s->pict_type == FF_B_TYPE || s->low_delay) {
*pict= *(AVFrame*)s->current_picture_ptr;
} else if (s->last_picture_ptr != NULL) {
*pict= *(AVFrame*)s->last_picture_ptr;
}
if(s->last_picture_ptr || s->low_delay){
*data_size = sizeof(AVFrame);
ff_print_debug_info(s, pict);
}
/* Return the Picture timestamp as the frame number */
/* we subtract 1 because it is added on utils.c */
avctx->frame_number = s->picture_number - 1;
#ifdef PRINT_FRAME_TIME
av_log(avctx, AV_LOG_DEBUG, "%"PRId64"\n", rdtsc()-time);
#endif
return get_consumed_bytes(s, buf_size);
}
