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h264: move ff_h264_check_intra[4x4]_pred_mode() to h264_parse

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It is shared with svq3.
This commit is contained in:
Anton Khirnov 2016-03-23 09:41:05 +01:00
parent 1877712c58
commit ecc31f6b08
8 changed files with 128 additions and 116 deletions
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2
libavcodec/Makefile
View File

@ -418,7 +418,7 @@ OBJS-$(CONFIG_SUNRAST_ENCODER) += sunrastenc.o
OBJS-$(CONFIG_SVQ1_DECODER) += svq1dec.o svq1.o svq13.o h263data.o
OBJS-$(CONFIG_SVQ1_ENCODER) += svq1enc.o svq1.o h263data.o \
h263.o ituh263enc.o
OBJS-$(CONFIG_SVQ3_DECODER) += svq3.o svq13.o mpegutils.o
OBJS-$(CONFIG_SVQ3_DECODER) += svq3.o svq13.o mpegutils.o h264_parse.o
OBJS-$(CONFIG_TAK_DECODER) += takdec.o tak.o
OBJS-$(CONFIG_TARGA_DECODER) += targa.o
OBJS-$(CONFIG_TARGA_ENCODER) += targaenc.o rle.o

93
libavcodec/h264.c
View File

@ -114,99 +114,6 @@ void ff_h264_draw_horiz_band(const H264Context *h, H264SliceContext *sl,
}
}
/**
* Check if the top & left blocks are available if needed and
* change the dc mode so it only uses the available blocks.
*/
int ff_h264_check_intra4x4_pred_mode(const H264Context *h, H264SliceContext *sl)
{
static const int8_t top[12] = {
-1, 0, LEFT_DC_PRED, -1, -1, -1, -1, -1, 0
};
static const int8_t left[12] = {
0, -1, TOP_DC_PRED, 0, -1, -1, -1, 0, -1, DC_128_PRED
};
int i;
if (!(sl->top_samples_available & 0x8000)) {
for (i = 0; i < 4; i++) {
int status = top[sl->intra4x4_pred_mode_cache[scan8[0] + i]];
if (status < 0) {
av_log(h->avctx, AV_LOG_ERROR,
"top block unavailable for requested intra4x4 mode %d at %d %d\n",
status, sl->mb_x, sl->mb_y);
return AVERROR_INVALIDDATA;
} else if (status) {
sl->intra4x4_pred_mode_cache[scan8[0] + i] = status;
}
}
}
if ((sl->left_samples_available & 0x8888) != 0x8888) {
static const int mask[4] = { 0x8000, 0x2000, 0x80, 0x20 };
for (i = 0; i < 4; i++)
if (!(sl->left_samples_available & mask[i])) {
int status = left[sl->intra4x4_pred_mode_cache[scan8[0] + 8 * i]];
if (status < 0) {
av_log(h->avctx, AV_LOG_ERROR,
"left block unavailable for requested intra4x4 mode %d at %d %d\n",
status, sl->mb_x, sl->mb_y);
return AVERROR_INVALIDDATA;
} else if (status) {
sl->intra4x4_pred_mode_cache[scan8[0] + 8 * i] = status;
}
}
}
return 0;
} // FIXME cleanup like ff_h264_check_intra_pred_mode
/**
* Check if the top & left blocks are available if needed and
* change the dc mode so it only uses the available blocks.
*/
int ff_h264_check_intra_pred_mode(const H264Context *h, H264SliceContext *sl,
int mode, int is_chroma)
{
static const int8_t top[4] = { LEFT_DC_PRED8x8, 1, -1, -1 };
static const int8_t left[5] = { TOP_DC_PRED8x8, -1, 2, -1, DC_128_PRED8x8 };
if (mode > 3U) {
av_log(h->avctx, AV_LOG_ERROR,
"out of range intra chroma pred mode at %d %d\n",
sl->mb_x, sl->mb_y);
return AVERROR_INVALIDDATA;
}
if (!(sl->top_samples_available & 0x8000)) {
mode = top[mode];
if (mode < 0) {
av_log(h->avctx, AV_LOG_ERROR,
"top block unavailable for requested intra mode at %d %d\n",
sl->mb_x, sl->mb_y);
return AVERROR_INVALIDDATA;
}
}
if ((sl->left_samples_available & 0x8080) != 0x8080) {
mode = left[mode];
if (is_chroma && (sl->left_samples_available & 0x8080)) {
// mad cow disease mode, aka MBAFF + constrained_intra_pred
mode = ALZHEIMER_DC_L0T_PRED8x8 +
(!(sl->left_samples_available & 0x8000)) +
2 * (mode == DC_128_PRED8x8);
}
if (mode < 0) {
av_log(h->avctx, AV_LOG_ERROR,
"left block unavailable for requested intra mode at %d %d\n",
sl->mb_x, sl->mb_y);
return AVERROR_INVALIDDATA;
}
}
return mode;
}
const uint8_t *ff_h264_decode_nal(H264Context *h, H264SliceContext *sl,
const uint8_t *src,
int *dst_length, int *consumed, int length)

13
libavcodec/h264.h
View File

@ -808,19 +808,6 @@ int ff_h264_decode_ref_pic_marking(H264Context *h, GetBitContext *gb,
int ff_generate_sliding_window_mmcos(H264Context *h, int first_slice);
/**
* Check if the top & left blocks are available if needed & change the
* dc mode so it only uses the available blocks.
*/
int ff_h264_check_intra4x4_pred_mode(const H264Context *h, H264SliceContext *sl);
/**
* Check if the top & left blocks are available if needed & change the
* dc mode so it only uses the available blocks.
*/
int ff_h264_check_intra_pred_mode(const H264Context *h, H264SliceContext *sl,
int mode, int is_chroma);
void ff_h264_hl_decode_mb(const H264Context *h, H264SliceContext *sl);
int ff_h264_decode_extradata(H264Context *h);
int ff_h264_decode_init(AVCodecContext *avctx);

10
libavcodec/h264_cabac.c
View File

@ -2076,16 +2076,20 @@ decode_intra_mb:
}
}
write_back_intra_pred_mode(h, sl);
if (ff_h264_check_intra4x4_pred_mode(h, sl) < 0 ) return -1;
if (ff_h264_check_intra4x4_pred_mode(sl->intra4x4_pred_mode_cache, h->avctx,
sl->top_samples_available, sl->left_samples_available) < 0 )
return -1;
} else {
sl->intra16x16_pred_mode = ff_h264_check_intra_pred_mode(h, sl, sl->intra16x16_pred_mode, 0);
sl->intra16x16_pred_mode = ff_h264_check_intra_pred_mode(h->avctx, sl->top_samples_available,
sl->left_samples_available, sl->intra16x16_pred_mode, 0);
if (sl->intra16x16_pred_mode < 0) return -1;
}
if(decode_chroma){
h->chroma_pred_mode_table[mb_xy] =
pred_mode = decode_cabac_mb_chroma_pre_mode(h, sl);
pred_mode= ff_h264_check_intra_pred_mode(h, sl, pred_mode, 1 );
pred_mode= ff_h264_check_intra_pred_mode(h->avctx, sl->top_samples_available,
sl->left_samples_available, pred_mode, 1 );
if( pred_mode < 0 ) return -1;
sl->chroma_pred_mode = pred_mode;
} else {

9
libavcodec/h264_cavlc.c
View File

@ -818,15 +818,18 @@ decode_intra_mb:
sl->intra4x4_pred_mode_cache[scan8[i]] = mode;
}
write_back_intra_pred_mode(h, sl);
if (ff_h264_check_intra4x4_pred_mode(h, sl) < 0)
if (ff_h264_check_intra4x4_pred_mode(sl->intra4x4_pred_mode_cache, h->avctx,
sl->top_samples_available, sl->left_samples_available) < 0)
return -1;
}else{
sl->intra16x16_pred_mode = ff_h264_check_intra_pred_mode(h, sl, sl->intra16x16_pred_mode, 0);
sl->intra16x16_pred_mode = ff_h264_check_intra_pred_mode(h->avctx, sl->top_samples_available,
sl->left_samples_available, sl->intra16x16_pred_mode, 0);
if (sl->intra16x16_pred_mode < 0)
return -1;
}
if(decode_chroma){
pred_mode= ff_h264_check_intra_pred_mode(h, sl, get_ue_golomb_31(&sl->gb), 1);
pred_mode= ff_h264_check_intra_pred_mode(h->avctx, sl->top_samples_available,
sl->left_samples_available, get_ue_golomb_31(&sl->gb), 1);
if(pred_mode < 0)
return -1;
sl->chroma_pred_mode = pred_mode;

92
libavcodec/h264_parse.c
View File

@ -84,3 +84,95 @@ int ff_h264_pred_weight_table(GetBitContext *gb, const SPS *sps,
pwt->use_weight = pwt->use_weight || pwt->use_weight_chroma;
return 0;
}
/**
* Check if the top & left blocks are available if needed and
* change the dc mode so it only uses the available blocks.
*/
int ff_h264_check_intra4x4_pred_mode(int8_t *pred_mode_cache, void *logctx,
int top_samples_available, int left_samples_available)
{
static const int8_t top[12] = {
-1, 0, LEFT_DC_PRED, -1, -1, -1, -1, -1, 0
};
static const int8_t left[12] = {
0, -1, TOP_DC_PRED, 0, -1, -1, -1, 0, -1, DC_128_PRED
};
int i;
if (!(top_samples_available & 0x8000)) {
for (i = 0; i < 4; i++) {
int status = top[pred_mode_cache[scan8[0] + i]];
if (status < 0) {
av_log(logctx, AV_LOG_ERROR,
"top block unavailable for requested intra4x4 mode %d\n",
status);
return AVERROR_INVALIDDATA;
} else if (status) {
pred_mode_cache[scan8[0] + i] = status;
}
}
}
if ((left_samples_available & 0x8888) != 0x8888) {
static const int mask[4] = { 0x8000, 0x2000, 0x80, 0x20 };
for (i = 0; i < 4; i++)
if (!(left_samples_available & mask[i])) {
int status = left[pred_mode_cache[scan8[0] + 8 * i]];
if (status < 0) {
av_log(logctx, AV_LOG_ERROR,
"left block unavailable for requested intra4x4 mode %d\n",
status);
return AVERROR_INVALIDDATA;
} else if (status) {
pred_mode_cache[scan8[0] + 8 * i] = status;
}
}
}
return 0;
}
/**
* Check if the top & left blocks are available if needed and
* change the dc mode so it only uses the available blocks.
*/
int ff_h264_check_intra_pred_mode(void *logctx, int top_samples_available,
int left_samples_available,
int mode, int is_chroma)
{
static const int8_t top[4] = { LEFT_DC_PRED8x8, 1, -1, -1 };
static const int8_t left[5] = { TOP_DC_PRED8x8, -1, 2, -1, DC_128_PRED8x8 };
if (mode > 3U) {
av_log(logctx, AV_LOG_ERROR,
"out of range intra chroma pred mode\n");
return AVERROR_INVALIDDATA;
}
if (!(top_samples_available & 0x8000)) {
mode = top[mode];
if (mode < 0) {
av_log(logctx, AV_LOG_ERROR,
"top block unavailable for requested intra mode\n");
return AVERROR_INVALIDDATA;
}
}
if ((left_samples_available & 0x8080) != 0x8080) {
mode = left[mode];
if (is_chroma && (left_samples_available & 0x8080)) {
// mad cow disease mode, aka MBAFF + constrained_intra_pred
mode = ALZHEIMER_DC_L0T_PRED8x8 +
(!(left_samples_available & 0x8000)) +
2 * (mode == DC_128_PRED8x8);
}
if (mode < 0) {
av_log(logctx, AV_LOG_ERROR,
"left block unavailable for requested intra mode\n");
return AVERROR_INVALIDDATA;
}
}
return mode;
}

15
libavcodec/h264_parse.h
View File

@ -45,4 +45,19 @@ int ff_h264_pred_weight_table(GetBitContext *gb, const struct SPS *sps,
const int *ref_count, int slice_type_nos,
H264PredWeightTable *pwt);
/**
* Check if the top & left blocks are available if needed & change the
* dc mode so it only uses the available blocks.
*/
int ff_h264_check_intra4x4_pred_mode(int8_t *pred_mode_cache, void *logctx,
int top_samples_available, int left_samples_available);
/**
* Check if the top & left blocks are available if needed & change the
* dc mode so it only uses the available blocks.
*/
int ff_h264_check_intra_pred_mode(void *logctx, int top_samples_available,
int left_samples_available,
int mode, int is_chroma);
#endif /* AVCODEC_H264_PARSE_H */

10
libavcodec/svq3.c
View File

@ -771,7 +771,9 @@ static int svq3_decode_mb(SVQ3Context *s, unsigned int mb_type)
i4x4[6] = i4x4_cache[7 + 8 * 1];
if (mb_type == 8) {
ff_h264_check_intra4x4_pred_mode(h, sl);
ff_h264_check_intra4x4_pred_mode(sl->intra4x4_pred_mode_cache,
h->avctx, sl->top_samples_available,
sl->left_samples_available);
sl->top_samples_available = (s->mb_y == 0) ? 0x33FF : 0xFFFF;
sl->left_samples_available = (s->mb_x == 0) ? 0x5F5F : 0xFFFF;
@ -788,7 +790,8 @@ static int svq3_decode_mb(SVQ3Context *s, unsigned int mb_type)
dir = ff_h264_i_mb_type_info[mb_type - 8].pred_mode;
dir = (dir >> 1) ^ 3 * (dir & 1) ^ 1;
if ((sl->intra16x16_pred_mode = ff_h264_check_intra_pred_mode(h, sl, dir, 0)) < 0) {
if ((sl->intra16x16_pred_mode = ff_h264_check_intra_pred_mode(h->avctx, sl->top_samples_available,
sl->left_samples_available, dir, 0)) < 0) {
av_log(h->avctx, AV_LOG_ERROR, "ff_h264_check_intra_pred_mode < 0\n");
return sl->intra16x16_pred_mode;
}
@ -892,7 +895,8 @@ static int svq3_decode_mb(SVQ3Context *s, unsigned int mb_type)
h->cur_pic.mb_type[mb_xy] = mb_type;
if (IS_INTRA(mb_type))
sl->chroma_pred_mode = ff_h264_check_intra_pred_mode(h, sl, DC_PRED8x8, 1);
sl->chroma_pred_mode = ff_h264_check_intra_pred_mode(h->avctx, sl->top_samples_available,
sl->left_samples_available, DC_PRED8x8, 1);
return 0;
}