diff options
| author | Andreas Rheinhardt <andreas.rheinhardt@outlook.com> | 2022-10-20 04:59:58 +0200 |
|---|---|---|
| committer | Andreas Rheinhardt <andreas.rheinhardt@outlook.com> | 2022-10-24 00:46:39 +0200 |
| commit | c262245fd37e50da1e7065affefed287a21fe370 (patch) | |
| tree | d36988c3278ee48a10500e8b32e515341985f28e | |
| parent | ba85e0ce4177c442004e7e0e3518fcbddd83c3d9 (diff) | |
| download | ffmpeg-c262245fd37e50da1e7065affefed287a21fe370.tar.gz | |
avcodec/eamad: Don't use IDCTDSP-API unnecessarily
The eamad decoder uses a custom IDCT and actually does not
use the IDCTDSP API at all. Somehow it was nevertheless
used to simply apply the identity permutation on ff_zigzag_direct.
This commit stops doing so.
Reviewed-by: Peter Ross <pross@xvid.org>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
| -rwxr-xr-x | configure | 2 | ||||
| -rw-r--r-- | libavcodec/eamad.c | 8 |
2 files changed, 2 insertions, 8 deletions
@@ -2820,7 +2820,7 @@ dxa_decoder_deps="zlib" dxv_decoder_select="lzf texturedsp" eac3_decoder_select="ac3_decoder" eac3_encoder_select="ac3_encoder" -eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp" +eamad_decoder_select="aandcttables blockdsp bswapdsp" eatgq_decoder_select="aandcttables idctdsp" eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp" exr_decoder_deps="zlib" diff --git a/libavcodec/eamad.c b/libavcodec/eamad.c index 2a5aac912d..de8f488f65 100644 --- a/libavcodec/eamad.c +++ b/libavcodec/eamad.c @@ -39,7 +39,6 @@ #include "get_bits.h" #include "aandcttab.h" #include "eaidct.h" -#include "idctdsp.h" #include "mpeg12data.h" #include "mpeg12vlc.h" @@ -52,13 +51,11 @@ typedef struct MadContext { AVCodecContext *avctx; BlockDSPContext bdsp; BswapDSPContext bbdsp; - IDCTDSPContext idsp; AVFrame *last_frame; GetBitContext gb; void *bitstream_buf; unsigned int bitstream_buf_size; DECLARE_ALIGNED(32, int16_t, block)[64]; - ScanTable scantable; uint16_t quant_matrix[64]; int mb_x; int mb_y; @@ -71,9 +68,6 @@ static av_cold int decode_init(AVCodecContext *avctx) avctx->pix_fmt = AV_PIX_FMT_YUV420P; ff_blockdsp_init(&s->bdsp); ff_bswapdsp_init(&s->bbdsp); - ff_idctdsp_init(&s->idsp, avctx); - ff_init_scantable_permutation(s->idsp.idct_permutation, FF_IDCT_PERM_NONE); - ff_init_scantable(s->idsp.idct_permutation, &s->scantable, ff_zigzag_direct); ff_mpeg12_init_vlcs(); s->last_frame = av_frame_alloc(); @@ -135,7 +129,7 @@ static inline int decode_block_intra(MadContext *s, int16_t * block) { int level, i, j, run; RLTable *rl = &ff_rl_mpeg1; - const uint8_t *scantable = s->scantable.permutated; + const uint8_t *scantable = ff_zigzag_direct; int16_t *quant_matrix = s->quant_matrix; block[0] = (128 + get_sbits(&s->gb, 8)) * quant_matrix[0]; |