static int svq1_encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data) { SVQ1Context * const s = avctx->priv_data; AVFrame *pict = data; AVFrame * const p= (AVFrame*)&s->picture; AVFrame temp; int i; if(avctx->pix_fmt != PIX_FMT_YUV410P){ av_log(avctx, AV_LOG_ERROR, "unsupported pixel format\n"); return -1; } if(!s->current_picture.data[0]){ avctx->get_buffer(avctx, &s->current_picture); avctx->get_buffer(avctx, &s->last_picture); } temp= s->current_picture; s->current_picture= s->last_picture; s->last_picture= temp; init_put_bits(&s->pb, buf, buf_size); *p = *pict; p->pict_type = avctx->frame_number % avctx->gop_size ? P_TYPE : I_TYPE; p->key_frame = p->pict_type == I_TYPE; svq1_write_header(s, p->pict_type); for(i=0; i<3; i++){ svq1_encode_plane(s, i, s->picture.data[i], s->last_picture.data[i], s->current_picture.data[i], s->frame_width / (i?4:1), s->frame_height / (i?4:1), s->picture.linesize[i], s->current_picture.linesize[i]); } // align_put_bits(&s->pb); while(put_bits_count(&s->pb) & 31) put_bits(&s->pb, 1, 0); flush_put_bits(&s->pb); return (put_bits_count(&s->pb) / 8); }