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ffmpeg.wasm-core
Commit 2491f9ee authored by Anton Khirnov's avatar Anton Khirnov
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h264: remove a pointless if() 

!encoding is always true, we do not have a H.264 encoder
parent 68f930d2
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Showing with 63 additions and 65 deletions
libavcodec/h264.c
View file @ 2491f9ee
......@@ -1796,77 +1796,75 @@ static av_always_inline void hl_decode_mb_predict_luma(H264Context *h,
int qscale = p == 0 ? s->qscale : h->chroma_qp[p - 1];
block_offset += 16 * p;
if (IS_INTRA4x4(mb_type)) {
if (simple || !s->encoding) {
if (IS_8x8DCT(mb_type)) {
if (transform_bypass) {
idct_dc_add =
idct_add = s->dsp.add_pixels8;
if (IS_8x8DCT(mb_type)) {
if (transform_bypass) {
idct_dc_add =
idct_add = s->dsp.add_pixels8;
} else {
idct_dc_add = h->h264dsp.h264_idct8_dc_add;
idct_add = h->h264dsp.h264_idct8_add;
}
for (i = 0; i < 16; i += 4) {
uint8_t *const ptr = dest_y + block_offset[i];
const int dir = h->intra4x4_pred_mode_cache[scan8[i]];
if (transform_bypass && h->sps.profile_idc == 244 && dir <= 1) {
h->hpc.pred8x8l_add[dir](ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);
} else {
idct_dc_add = h->h264dsp.h264_idct8_dc_add;
idct_add = h->h264dsp.h264_idct8_add;
}
for (i = 0; i < 16; i += 4) {
uint8_t *const ptr = dest_y + block_offset[i];
const int dir = h->intra4x4_pred_mode_cache[scan8[i]];
if (transform_bypass && h->sps.profile_idc == 244 && dir <= 1) {
h->hpc.pred8x8l_add[dir](ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);
} else {
const int nnz = h->non_zero_count_cache[scan8[i + p * 16]];
h->hpc.pred8x8l[dir](ptr, (h->topleft_samples_available << i) & 0x8000,
(h->topright_samples_available << i) & 0x4000, linesize);
if (nnz) {
if (nnz == 1 && dctcoef_get(h->mb, pixel_shift, i * 16 + p * 256))
idct_dc_add(ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);
else
idct_add(ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);
}
const int nnz = h->non_zero_count_cache[scan8[i + p * 16]];
h->hpc.pred8x8l[dir](ptr, (h->topleft_samples_available << i) & 0x8000,
(h->topright_samples_available << i) & 0x4000, linesize);
if (nnz) {
if (nnz == 1 && dctcoef_get(h->mb, pixel_shift, i * 16 + p * 256))
idct_dc_add(ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);
else
idct_add(ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);
}
}
}
} else {
if (transform_bypass) {
idct_dc_add =
idct_add = s->dsp.add_pixels4;
} else {
if (transform_bypass) {
idct_dc_add =
idct_add = s->dsp.add_pixels4;
} else {
idct_dc_add = h->h264dsp.h264_idct_dc_add;
idct_add = h->h264dsp.h264_idct_add;
}
for (i = 0; i < 16; i++) {
uint8_t *const ptr = dest_y + block_offset[i];
const int dir = h->intra4x4_pred_mode_cache[scan8[i]];
idct_dc_add = h->h264dsp.h264_idct_dc_add;
idct_add = h->h264dsp.h264_idct_add;
}
for (i = 0; i < 16; i++) {
uint8_t *const ptr = dest_y + block_offset[i];
const int dir = h->intra4x4_pred_mode_cache[scan8[i]];
if (transform_bypass && h->sps.profile_idc == 244 && dir <= 1) {
h->hpc.pred4x4_add[dir](ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);
} else {
uint8_t *topright;
int nnz, tr;
uint64_t tr_high;
if (dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED) {
const int topright_avail = (h->topright_samples_available << i) & 0x8000;
assert(s->mb_y || linesize <= block_offset[i]);
if (!topright_avail) {
if (pixel_shift) {
tr_high = ((uint16_t *)ptr)[3 - linesize / 2] * 0x0001000100010001ULL;
topright = (uint8_t *)&tr_high;
} else {
tr = ptr[3 - linesize] * 0x01010101u;
topright = (uint8_t *)&tr;
}
} else
topright = ptr + (4 << pixel_shift) - linesize;
if (transform_bypass && h->sps.profile_idc == 244 && dir <= 1) {
h->hpc.pred4x4_add[dir](ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);
} else {
uint8_t *topright;
int nnz, tr;
uint64_t tr_high;
if (dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED) {
const int topright_avail = (h->topright_samples_available << i) & 0x8000;
assert(s->mb_y || linesize <= block_offset[i]);
if (!topright_avail) {
if (pixel_shift) {
tr_high = ((uint16_t *)ptr)[3 - linesize / 2] * 0x0001000100010001ULL;
topright = (uint8_t *)&tr_high;
} else {
tr = ptr[3 - linesize] * 0x01010101u;
topright = (uint8_t *)&tr;
}
} else
topright = NULL;
h->hpc.pred4x4[dir](ptr, topright, linesize);
nnz = h->non_zero_count_cache[scan8[i + p * 16]];
if (nnz) {
if (is_h264) {
if (nnz == 1 && dctcoef_get(h->mb, pixel_shift, i * 16 + p * 256))
idct_dc_add(ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);
else
idct_add(ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);
} else if (CONFIG_SVQ3_DECODER)
ff_svq3_add_idct_c(ptr, h->mb + i * 16 + p * 256, linesize, qscale, 0);
}
topright = ptr + (4 << pixel_shift) - linesize;
} else
topright = NULL;
h->hpc.pred4x4[dir](ptr, topright, linesize);
nnz = h->non_zero_count_cache[scan8[i + p * 16]];
if (nnz) {
if (is_h264) {
if (nnz == 1 && dctcoef_get(h->mb, pixel_shift, i * 16 + p * 256))
idct_dc_add(ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);
else
idct_add(ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);
} else if (CONFIG_SVQ3_DECODER)
ff_svq3_add_idct_c(ptr, h->mb + i * 16 + p * 256, linesize, qscale, 0);
}
}
}
......
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