mirror of https://git.ffmpeg.org/ffmpeg.git
avcodec/mpegvideo: Partially check for being encoder at compile-time
Whether lowres is in use or not is inlined in mpv_reconstruct_mb_internal(), so one can use the fact that lowres is always zero during encoding to evaluate the checks for whether one is encoding or not at compile-time when one is in lowres mode. Also reorder the main check to check for whether it is an encoder first to shortcircuit it in the common case of a decoder. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
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@ -1961,6 +1961,7 @@ static av_always_inline
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void mpv_reconstruct_mb_internal(MpegEncContext *s, int16_t block[12][64],
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int lowres_flag, int is_mpeg12)
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{
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#define IS_ENCODER(s) (CONFIG_MPEGVIDEOENC && !lowres_flag && (s)->encoding)
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const int mb_xy = s->mb_y * s->mb_stride + s->mb_x;
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s->current_picture.qscale_table[mb_xy] = s->qscale;
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@ -1979,8 +1980,8 @@ void mpv_reconstruct_mb_internal(MpegEncContext *s, int16_t block[12][64],
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else if (!is_mpeg12 && (s->h263_pred || s->h263_aic))
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s->mbintra_table[mb_xy]=1;
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if ((s->avctx->flags & AV_CODEC_FLAG_PSNR) || s->frame_skip_threshold || s->frame_skip_factor ||
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!(s->encoding && (s->intra_only || s->pict_type == AV_PICTURE_TYPE_B) &&
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if (!IS_ENCODER(s) || (s->avctx->flags & AV_CODEC_FLAG_PSNR) || s->frame_skip_threshold || s->frame_skip_factor ||
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!((s->intra_only || s->pict_type == AV_PICTURE_TYPE_B) &&
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s->avctx->mb_decision != FF_MB_DECISION_RD)) { // FIXME precalc
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uint8_t *dest_y, *dest_cb, *dest_cr;
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int dct_linesize, dct_offset;
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@ -1988,12 +1989,12 @@ void mpv_reconstruct_mb_internal(MpegEncContext *s, int16_t block[12][64],
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qpel_mc_func (*op_qpix)[16];
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const int linesize = s->current_picture.f->linesize[0]; //not s->linesize as this would be wrong for field pics
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const int uvlinesize = s->current_picture.f->linesize[1];
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const int readable= s->pict_type != AV_PICTURE_TYPE_B || s->encoding || s->avctx->draw_horiz_band || lowres_flag;
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const int readable = s->pict_type != AV_PICTURE_TYPE_B || IS_ENCODER(s) || s->avctx->draw_horiz_band || lowres_flag;
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const int block_size= lowres_flag ? 8>>s->avctx->lowres : 8;
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/* avoid copy if macroblock skipped in last frame too */
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/* skip only during decoding as we might trash the buffers during encoding a bit */
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if(!s->encoding){
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if (!IS_ENCODER(s)) {
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uint8_t *mbskip_ptr = &s->mbskip_table[mb_xy];
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if (s->mb_skipped) {
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@ -2023,7 +2024,7 @@ void mpv_reconstruct_mb_internal(MpegEncContext *s, int16_t block[12][64],
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if (!s->mb_intra) {
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/* motion handling */
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/* decoding or more than one mb_type (MC was already done otherwise) */
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if(!s->encoding){
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if (!IS_ENCODER(s)) {
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if(HAVE_THREADS && s->avctx->active_thread_type&FF_THREAD_FRAME) {
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if (s->mv_dir & MV_DIR_FORWARD) {
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@ -2075,7 +2076,7 @@ void mpv_reconstruct_mb_internal(MpegEncContext *s, int16_t block[12][64],
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}
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/* add dct residue */
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if(s->encoding || !( s->msmpeg4_version || s->codec_id==AV_CODEC_ID_MPEG1VIDEO || s->codec_id==AV_CODEC_ID_MPEG2VIDEO
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if (IS_ENCODER(s) || !(s->msmpeg4_version || s->codec_id == AV_CODEC_ID_MPEG1VIDEO || s->codec_id == AV_CODEC_ID_MPEG2VIDEO
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|| (s->codec_id==AV_CODEC_ID_MPEG4 && !s->mpeg_quant))){
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add_dequant_dct(s, block[0], 0, dest_y , dct_linesize, s->qscale);
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add_dequant_dct(s, block[1], 1, dest_y + block_size, dct_linesize, s->qscale);
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@ -2182,7 +2183,7 @@ void mpv_reconstruct_mb_internal(MpegEncContext *s, int16_t block[12][64],
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}
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}
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/* dct only in intra block */
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else if(s->encoding || !(s->codec_id==AV_CODEC_ID_MPEG1VIDEO || s->codec_id==AV_CODEC_ID_MPEG2VIDEO)){
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else if (IS_ENCODER(s) || !(s->codec_id == AV_CODEC_ID_MPEG1VIDEO || s->codec_id == AV_CODEC_ID_MPEG2VIDEO)) {
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put_dct(s, block[0], 0, dest_y , dct_linesize, s->qscale);
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put_dct(s, block[1], 1, dest_y + block_size, dct_linesize, s->qscale);
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put_dct(s, block[2], 2, dest_y + dct_offset , dct_linesize, s->qscale);
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