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Merge remote-tracking branch 'qatar/master'

Browse Source 
* qatar/master:
  Remove h264_lowres_idct_put/add functions
  Remove snow/dwt test program
  h264: remove some disabled code
  Fix incorrect max_lowres values
  matroskadec: fix integer underflow if header length < probe length.
  cosmetics: indentation
  eac3enc: use frame exponent strategy when applicable.
  cosmetics: rename eac3dec_data.c/h to eac3_data.c/h since the tables will also be used in the E-AC-3 encoder.
  dsputil: fix ff_check_alignment()

Conflicts:
	libavcodec/Makefile
	libavcodec/h264idct_template.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
pull/2/head
Michael Niedermayer 14 years ago
parent 045ef52ef5 7b4ee3a21d
commit 7c6c4cf2fb
14 changed files with 151 additions and 237 deletions
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  1. 4
      libavcodec/Makefile
  2. 41
      libavcodec/ac3enc.c
  3. 2
      libavcodec/ac3enc.h
  4. 29
      libavcodec/dsputil.c
  5. 2
      libavcodec/dsputil.h
  6. 4
      libavcodec/eac3_data.c
  7. 8
      libavcodec/eac3_data.h
  8. 2
      libavcodec/eac3dec.c
  9. 67
      libavcodec/eac3enc.c
  10. 10
      libavcodec/eac3enc.h
  11. 149
      libavcodec/h264.c
  12. 67
      libavcodec/h264idct_template.c
  13. 1
      libavcodec/kgv1dec.c
  14. 2
      libavformat/matroskadec.c

4
libavcodec/Makefile
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@ -127,9 +127,9 @@ OBJS-$(CONFIG_DVDSUB_ENCODER) += dvdsubenc.o
OBJS-$(CONFIG_DVVIDEO_DECODER) += dv.o dvdata.o
OBJS-$(CONFIG_DVVIDEO_ENCODER) += dv.o dvdata.o
OBJS-$(CONFIG_DXA_DECODER) += dxa.o
OBJS-$(CONFIG_EAC3_DECODER) += eac3dec.o eac3dec_data.o
OBJS-$(CONFIG_EAC3_DECODER) += eac3dec.o eac3_data.o
OBJS-$(CONFIG_EAC3_ENCODER) += eac3enc.o ac3enc.o ac3enc_float.o \
ac3tab.o ac3.o kbdwin.o
ac3tab.o ac3.o kbdwin.o eac3_data.o
OBJS-$(CONFIG_EACMV_DECODER) += eacmv.o
OBJS-$(CONFIG_EAMAD_DECODER) += eamad.o eaidct.o mpeg12.o \
mpeg12data.o mpegvideo.o \

41
libavcodec/ac3enc.c
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@ -194,6 +194,7 @@ void ff_ac3_compute_coupling_strategy(AC3EncodeContext *s)
{
int blk, ch;
int got_cpl_snr;
int num_cpl_blocks;
/* set coupling use flags for each block/channel */
/* TODO: turn coupling on/off and adjust start band based on bit usage */
@ -206,12 +207,14 @@ void ff_ac3_compute_coupling_strategy(AC3EncodeContext *s)
/* enable coupling for each block if at least 2 channels have coupling
enabled for that block */
got_cpl_snr = 0;
num_cpl_blocks = 0;
for (blk = 0; blk < AC3_MAX_BLOCKS; blk++) {
AC3Block *block = &s->blocks[blk];
block->num_cpl_channels = 0;
for (ch = 1; ch <= s->fbw_channels; ch++)
block->num_cpl_channels += block->channel_in_cpl[ch];
block->cpl_in_use = block->num_cpl_channels > 1;
num_cpl_blocks += block->cpl_in_use;
if (!block->cpl_in_use) {
block->num_cpl_channels = 0;
for (ch = 1; ch <= s->fbw_channels; ch++)
@ -237,6 +240,8 @@ void ff_ac3_compute_coupling_strategy(AC3EncodeContext *s)
block->new_snr_offsets = 0;
}
}
if (!num_cpl_blocks)
s->cpl_on = 0;
/* set bandwidth for each channel */
for (blk = 0; blk < AC3_MAX_BLOCKS; blk++) {
@ -301,6 +306,9 @@ static av_cold void exponent_init(AC3EncodeContext *s)
}
/* LFE */
exponent_group_tab[0][0][7] = 2;
if (CONFIG_EAC3_ENCODER && s->eac3)
ff_eac3_exponent_init();
}
@ -342,8 +350,15 @@ static void compute_exp_strategy(AC3EncodeContext *s)
exp_strategy[0] = EXP_NEW;
exp += AC3_MAX_COEFS;
for (blk = 1; blk < AC3_MAX_BLOCKS; blk++, exp += AC3_MAX_COEFS) {
if ((ch == CPL_CH && (!s->blocks[blk].cpl_in_use || !s->blocks[blk-1].cpl_in_use)) ||
(ch > CPL_CH && (s->blocks[blk].channel_in_cpl[ch] != s->blocks[blk-1].channel_in_cpl[ch]))) {
if (ch == CPL_CH) {
if (!s->blocks[blk-1].cpl_in_use) {
exp_strategy[blk] = EXP_NEW;
continue;
} else if (!s->blocks[blk].cpl_in_use) {
exp_strategy[blk] = EXP_REUSE;
continue;
}
} else if (s->blocks[blk].channel_in_cpl[ch] != s->blocks[blk-1].channel_in_cpl[ch]) {
exp_strategy[blk] = EXP_NEW;
continue;
}
@ -377,6 +392,10 @@ static void compute_exp_strategy(AC3EncodeContext *s)
for (blk = 1; blk < AC3_MAX_BLOCKS; blk++)
s->exp_strategy[ch][blk] = EXP_REUSE;
}
/* for E-AC-3, determine frame exponent strategy */
if (CONFIG_EAC3_ENCODER && s->eac3)
ff_eac3_get_frame_exp_strategy(s);
}
@ -611,8 +630,12 @@ static void count_frame_bits_fixed(AC3EncodeContext *s)
frame_bits += 2;
frame_bits += 10;
/* exponent strategy */
for (blk = 0; blk < AC3_MAX_BLOCKS; blk++)
frame_bits += 2 * s->fbw_channels + s->lfe_on;
if (s->use_frame_exp_strategy)
frame_bits += 5 * s->fbw_channels;
else
frame_bits += AC3_MAX_BLOCKS * 2 * s->fbw_channels;
if (s->lfe_on)
frame_bits += AC3_MAX_BLOCKS;
/* converter exponent strategy */
frame_bits += s->fbw_channels * 5;
/* snr offsets */
@ -735,8 +758,14 @@ static void count_frame_bits(AC3EncodeContext *s)
}
}
/* coupling exponent strategy */
for (blk = 0; blk < AC3_MAX_BLOCKS; blk++)
frame_bits += 2 * s->blocks[blk].cpl_in_use;
if (s->cpl_on) {
if (s->use_frame_exp_strategy) {
frame_bits += 5 * s->cpl_on;
} else {
for (blk = 0; blk < AC3_MAX_BLOCKS; blk++)
frame_bits += 2 * s->blocks[blk].cpl_in_use;
}
}
} else {
if (opt->audio_production_info)
frame_bits += 7;

2
libavcodec/ac3enc.h
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@ -218,6 +218,8 @@ typedef struct AC3EncodeContext {
uint8_t *cpl_coord_mant_buffer;
uint8_t exp_strategy[AC3_MAX_CHANNELS][AC3_MAX_BLOCKS]; ///< exponent strategies
uint8_t frame_exp_strategy[AC3_MAX_CHANNELS]; ///< frame exp strategy index
int use_frame_exp_strategy; ///< indicates use of frame exp strategy
uint8_t exp_ref_block[AC3_MAX_CHANNELS][AC3_MAX_BLOCKS]; ///< reference blocks for EXP_REUSE
uint8_t *ref_bap [AC3_MAX_CHANNELS][AC3_MAX_BLOCKS]; ///< bit allocation pointers (bap)
int ref_bap_set; ///< indicates if ref_bap pointers have been set

29
libavcodec/dsputil.c
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@ -2811,9 +2811,9 @@ av_cold void dsputil_static_init(void)
int ff_check_alignment(void){
static int did_fail=0;
LOCAL_ALIGNED_16(int, aligned);
LOCAL_ALIGNED_16(int, aligned, [4]);
if((intptr_t)&aligned & 15){
if((intptr_t)aligned & 15){
if(!did_fail){
#if HAVE_MMX || HAVE_ALTIVEC
av_log(NULL, AV_LOG_ERROR,
@ -2851,29 +2851,8 @@ av_cold void dsputil_init(DSPContext* c, AVCodecContext *avctx)
#endif //CONFIG_ENCODERS
if(avctx->lowres==1){
if(avctx->idct_algo==FF_IDCT_INT || avctx->idct_algo==FF_IDCT_AUTO || !CONFIG_H264_DECODER){
c->idct_put= ff_jref_idct4_put;
c->idct_add= ff_jref_idct4_add;
}else{
if (avctx->codec_id != CODEC_ID_H264) {
c->idct_put= ff_h264_lowres_idct_put_8_c;
c->idct_add= ff_h264_lowres_idct_add_8_c;
} else {
switch (avctx->bits_per_raw_sample) {
case 9:
c->idct_put= ff_h264_lowres_idct_put_9_c;
c->idct_add= ff_h264_lowres_idct_add_9_c;
break;
case 10:
c->idct_put= ff_h264_lowres_idct_put_10_c;
c->idct_add= ff_h264_lowres_idct_add_10_c;
break;
default:
c->idct_put= ff_h264_lowres_idct_put_8_c;
c->idct_add= ff_h264_lowres_idct_add_8_c;
}
}
}
c->idct_put= ff_jref_idct4_put;
c->idct_add= ff_jref_idct4_add;
c->idct = j_rev_dct4;
c->idct_permutation_type= FF_NO_IDCT_PERM;
}else if(avctx->lowres==2){

2
libavcodec/dsputil.h
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@ -58,8 +58,6 @@ void ff_h264_idct8_add_ ## depth ## _c(uint8_t *dst, DCTELEM *block, int stride)
void ff_h264_idct_add_ ## depth ## _c(uint8_t *dst, DCTELEM *block, int stride);\
void ff_h264_idct8_dc_add_ ## depth ## _c(uint8_t *dst, DCTELEM *block, int stride);\
void ff_h264_idct_dc_add_ ## depth ## _c(uint8_t *dst, DCTELEM *block, int stride);\
void ff_h264_lowres_idct_add_ ## depth ## _c(uint8_t *dst, int stride, DCTELEM *block);\
void ff_h264_lowres_idct_put_ ## depth ## _c(uint8_t *dst, int stride, DCTELEM *block);\
void ff_h264_idct_add16_ ## depth ## _c(uint8_t *dst, const int *blockoffset, DCTELEM *block, int stride, const uint8_t nnzc[6*8]);\
void ff_h264_idct_add16intra_ ## depth ## _c(uint8_t *dst, const int *blockoffset, DCTELEM *block, int stride, const uint8_t nnzc[6*8]);\
void ff_h264_idct8_add4_ ## depth ## _c(uint8_t *dst, const int *blockoffset, DCTELEM *block, int stride, const uint8_t nnzc[6*8]);\

4
libavcodec/eac3dec_data.c → libavcodec/eac3_data.c
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@ -1,5 +1,5 @@
/*
* E-AC-3 decoder tables
* E-AC-3 tables
* Copyright (c) 2007 Bartlomiej Wolowiec <bartek.wolowiec@gmail.com>
*
* This file is part of FFmpeg.
@ -24,7 +24,7 @@
* Tables taken directly from the E-AC-3 spec.
*/
#include "eac3dec_data.h"
#include "eac3_data.h"
#include "ac3.h"
const uint8_t ff_eac3_bits_vs_hebap[20] = {

8
libavcodec/eac3dec_data.h → libavcodec/eac3_data.h
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@ -1,5 +1,5 @@
/*
* E-AC-3 decoder tables
* E-AC-3 tables
* Copyright (c) 2007 Bartlomiej Wolowiec <bartek.wolowiec@gmail.com>
*
* This file is part of FFmpeg.
@ -19,8 +19,8 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVCODEC_EAC3DEC_DATA_H
#define AVCODEC_EAC3DEC_DATA_H
#ifndef AVCODEC_EAC3_DATA_H
#define AVCODEC_EAC3_DATA_H
#include <stdint.h>
@ -33,4 +33,4 @@ extern const int16_t (* const ff_eac3_mantissa_vq[8])[6];
extern const uint8_t ff_eac3_frm_expstr[32][6];
extern const float ff_eac3_spx_atten_tab[32][3];
#endif /* AVCODEC_EAC3DEC_DATA_H */
#endif /* AVCODEC_EAC3_DATA_H */

2
libavcodec/eac3dec.c
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@ -51,7 +51,7 @@
#include "ac3_parser.h"
#include "ac3dec.h"
#include "ac3dec_data.h"
#include "eac3dec_data.h"
#include "eac3_data.h"
/** gain adaptive quantization mode */
typedef enum {

67
libavcodec/eac3enc.c
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@ -27,6 +27,7 @@
#define CONFIG_AC3ENC_FLOAT 1
#include "ac3enc.h"
#include "eac3enc.h"
#include "eac3_data.h"
#define AC3ENC_TYPE AC3ENC_TYPE_EAC3
@ -35,6 +36,51 @@ static const AVClass eac3enc_class = { "E-AC-3 Encoder", av_default_item_name,
eac3_options, LIBAVUTIL_VERSION_INT };
/**
* LUT for finding a matching frame exponent strategy index from a set of
* exponent strategies for a single channel across all 6 blocks.
*/
static int8_t eac3_frame_expstr_index_tab[3][4][4][4][4][4];
void ff_eac3_exponent_init(void)
{
int i;
memset(eac3_frame_expstr_index_tab, -1, sizeof(eac3_frame_expstr_index_tab));
for (i = 0; i < 32; i++) {
eac3_frame_expstr_index_tab[ff_eac3_frm_expstr[i][0]-1]
[ff_eac3_frm_expstr[i][1]]
[ff_eac3_frm_expstr[i][2]]
[ff_eac3_frm_expstr[i][3]]
[ff_eac3_frm_expstr[i][4]]
[ff_eac3_frm_expstr[i][5]] = i;
}
}
void ff_eac3_get_frame_exp_strategy(AC3EncodeContext *s)
{
int ch;
s->use_frame_exp_strategy = 1;
for (ch = !s->cpl_on; ch <= s->fbw_channels; ch++) {
int expstr = eac3_frame_expstr_index_tab[s->exp_strategy[ch][0]-1]
[s->exp_strategy[ch][1]]
[s->exp_strategy[ch][2]]
[s->exp_strategy[ch][3]]
[s->exp_strategy[ch][4]]
[s->exp_strategy[ch][5]];
if (expstr < 0) {
s->use_frame_exp_strategy = 0;
break;
}
s->frame_exp_strategy[ch] = expstr;
}
}
void ff_eac3_set_cpl_states(AC3EncodeContext *s)
{
int ch, blk;
@ -98,7 +144,7 @@ void ff_eac3_output_frame_header(AC3EncodeContext *s)
put_bits(&s->pb, 1, 0); /* no additional bit stream info */
/* frame header */
put_bits(&s->pb, 1, 1); /* exponent strategy syntax = each block */
put_bits(&s->pb, 1, !s->use_frame_exp_strategy);/* exponent strategy syntax */
put_bits(&s->pb, 1, 0); /* aht enabled = no */
put_bits(&s->pb, 2, 0); /* snr offset strategy = 1 */
put_bits(&s->pb, 1, 0); /* transient pre-noise processing enabled = no */
@ -120,16 +166,25 @@ void ff_eac3_output_frame_header(AC3EncodeContext *s)
}
}
/* exponent strategy */
for (blk = 0; blk < AC3_MAX_BLOCKS; blk++)
for (ch = !s->blocks[blk].cpl_in_use; ch <= s->fbw_channels; ch++)
put_bits(&s->pb, 2, s->exp_strategy[ch][blk]);
if (s->use_frame_exp_strategy) {
for (ch = !s->cpl_on; ch <= s->fbw_channels; ch++)
put_bits(&s->pb, 5, s->frame_exp_strategy[ch]);
} else {
for (blk = 0; blk < AC3_MAX_BLOCKS; blk++)
for (ch = !s->blocks[blk].cpl_in_use; ch <= s->fbw_channels; ch++)
put_bits(&s->pb, 2, s->exp_strategy[ch][blk]);
}
if (s->lfe_on) {
for (blk = 0; blk < AC3_MAX_BLOCKS; blk++)
put_bits(&s->pb, 1, s->exp_strategy[s->lfe_channel][blk]);
}
/* E-AC-3 to AC-3 converter exponent strategy (unfortunately not optional...) */
for (ch = 1; ch <= s->fbw_channels; ch++)
put_bits(&s->pb, 5, 0);
for (ch = 1; ch <= s->fbw_channels; ch++) {
if (s->use_frame_exp_strategy)
put_bits(&s->pb, 5, s->frame_exp_strategy[ch]);
else
put_bits(&s->pb, 5, 0);
}
/* snr offsets */
put_bits(&s->pb, 6, s->coarse_snr_offset);
put_bits(&s->pb, 4, s->fine_snr_offset[1]);

10
libavcodec/eac3enc.h
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@ -29,6 +29,16 @@
#include "ac3enc.h"
/**
* Initialize E-AC-3 exponent tables.
*/
void ff_eac3_exponent_init(void);
/**
* Determine frame exponent strategy use and indices.
*/
void ff_eac3_get_frame_exp_strategy(AC3EncodeContext *s);
/**
* Set coupling states.
* This determines whether certain flags must be written to the bitstream or

149
libavcodec/h264.c
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@ -3463,52 +3463,6 @@ static int decode_slice(struct AVCodecContext *avctx, void *arg){
}
}
}
#if 0
for(;s->mb_y < s->mb_height; s->mb_y++){
for(;s->mb_x < s->mb_width; s->mb_x++){
int ret= decode_mb(h);
ff_h264_hl_decode_mb(h);
if(ret<0){
av_log(s->avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask);
return -1;
}
if(++s->mb_x >= s->mb_width){
s->mb_x=0;
if(++s->mb_y >= s->mb_height){
if(get_bits_count(s->gb) == s->gb.size_in_bits){
ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
return 0;
}else{
ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
return -1;
}
}
}
if(get_bits_count(s->?gb) >= s->gb?.size_in_bits){
if(get_bits_count(s->gb) == s->gb.size_in_bits){
ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
return 0;
}else{
ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask);
return -1;
}
}
}
s->mb_x=0;
ff_draw_horiz_band(s, 16*s->mb_y, 16);
}
#endif
}
/**
@ -3976,109 +3930,6 @@ int main(void){
STOP_TIMER("get_se_golomb");
}
#if 0
printf("testing 4x4 (I)DCT\n");
DCTELEM block[16];
uint8_t src[16], ref[16];
uint64_t error= 0, max_error=0;
for(i=0; i<COUNT; i++){
int j;
// printf("%d %d %d\n", r1, r2, (r2-r1)*16);
for(j=0; j<16; j++){
ref[j]= random()%255;
src[j]= random()%255;
}
h264_diff_dct_c(block, src, ref, 4);
//normalize
for(j=0; j<16; j++){
// printf("%d ", block[j]);
block[j]= block[j]*4;
if(j&1) block[j]= (block[j]*4 + 2)/5;
if(j&4) block[j]= (block[j]*4 + 2)/5;
}
// printf("\n");
h->h264dsp.h264_idct_add(ref, block, 4);
/* for(j=0; j<16; j++){
printf("%d ", ref[j]);
}
printf("\n");*/
for(j=0; j<16; j++){
int diff= FFABS(src[j] - ref[j]);
error+= diff*diff;
max_error= FFMAX(max_error, diff);
}
}
printf("error=%f max_error=%d\n", ((float)error)/COUNT/16, (int)max_error );
printf("testing quantizer\n");
for(qp=0; qp<52; qp++){
for(i=0; i<16; i++)
src1_block[i]= src2_block[i]= random()%255;
}
printf("Testing NAL layer\n");
uint8_t bitstream[COUNT];
uint8_t nal[COUNT*2];
H264Context h;
memset(&h, 0, sizeof(H264Context));
for(i=0; i<COUNT; i++){
int zeros= i;
int nal_length;
int consumed;
int out_length;
uint8_t *out;
int j;
for(j=0; j<COUNT; j++){
bitstream[j]= (random() % 255) + 1;
}
for(j=0; j<zeros; j++){
int pos= random() % COUNT;
while(bitstream[pos] == 0){
pos++;
pos %= COUNT;
}
bitstream[pos]=0;
}
START_TIMER
nal_length= encode_nal(&h, nal, bitstream, COUNT, COUNT*2);
if(nal_length<0){
printf("encoding failed\n");
return -1;
}
out= ff_h264_decode_nal(&h, nal, &out_length, &consumed, nal_length);
STOP_TIMER("NAL")
if(out_length != COUNT){
printf("incorrect length %d %d\n", out_length, COUNT);
return -1;
}
if(consumed != nal_length){
printf("incorrect consumed length %d %d\n", nal_length, consumed);
return -1;
}
if(memcmp(bitstream, out, COUNT)){
printf("mismatch\n");
return -1;
}
}
#endif
printf("Testing RBSP\n");

67
libavcodec/h264idct_template.c
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@ -46,57 +46,46 @@ static const uint8_t scan8[16*3]={
};
#endif
static av_always_inline void FUNCC(idct_internal)(uint8_t *p_dst, DCTELEM *p_block, int stride, int block_stride, int shift, int add){
void FUNCC(ff_h264_idct_add)(uint8_t *_dst, DCTELEM *_block, int stride)
{
int i;
INIT_CLIP
pixel *dst = (pixel*)p_dst;
dctcoef *block = (dctcoef*)p_block;
pixel *dst = (pixel*)_dst;
dctcoef *block = (dctcoef*)_block;
stride >>= sizeof(pixel)-1;
block[0] += 1<<(shift-1);
block[0] += 1 << 5;
for(i=0; i<4; i++){
const int z0= block[i + block_stride*0] + block[i + block_stride*2];
const int z1= block[i + block_stride*0] - block[i + block_stride*2];
const int z2= (block[i + block_stride*1]>>1) - block[i + block_stride*3];
const int z3= block[i + block_stride*1] + (block[i + block_stride*3]>>1);
block[i + block_stride*0]= z0 + z3;
block[i + block_stride*1]= z1 + z2;
block[i + block_stride*2]= z1 - z2;
block[i + block_stride*3]= z0 - z3;
const int z0= block[i + 4*0] + block[i + 4*2];
const int z1= block[i + 4*0] - block[i + 4*2];
const int z2= (block[i + 4*1]>>1) - block[i + 4*3];
const int z3= block[i + 4*1] + (block[i + 4*3]>>1);
block[i + 4*0]= z0 + z3;
block[i + 4*1]= z1 + z2;
block[i + 4*2]= z1 - z2;
block[i + 4*3]= z0 - z3;
}
for(i=0; i<4; i++){
const int z0= block[0 + block_stride*i] + block[2 + block_stride*i];
const int z1= block[0 + block_stride*i] - block[2 + block_stride*i];
const int z2= (block[1 + block_stride*i]>>1) - block[3 + block_stride*i];
const int z3= block[1 + block_stride*i] + (block[3 + block_stride*i]>>1);
dst[i + 0*stride]= CLIP(add*dst[i + 0*stride] + ((z0 + z3) >> shift));
dst[i + 1*stride]= CLIP(add*dst[i + 1*stride] + ((z1 + z2) >> shift));
dst[i + 2*stride]= CLIP(add*dst[i + 2*stride] + ((z1 - z2) >> shift));
dst[i + 3*stride]= CLIP(add*dst[i + 3*stride] + ((z0 - z3) >> shift));
const int z0= block[0 + 4*i] + block[2 + 4*i];
const int z1= block[0 + 4*i] - block[2 + 4*i];
const int z2= (block[1 + 4*i]>>1) - block[3 + 4*i];
const int z3= block[1 + 4*i] + (block[3 + 4*i]>>1);
dst[i + 0*stride]= CLIP(dst[i + 0*stride] + ((z0 + z3) >> 6));
dst[i + 1*stride]= CLIP(dst[i + 1*stride] + ((z1 + z2) >> 6));
dst[i + 2*stride]= CLIP(dst[i + 2*stride] + ((z1 - z2) >> 6));
dst[i + 3*stride]= CLIP(dst[i + 3*stride] + ((z0 - z3) >> 6));
}
}
void FUNCC(ff_h264_idct_add)(uint8_t *dst, DCTELEM *block, int stride){
FUNCC(idct_internal)(dst, block, stride, 4, 6, 1);
}
void FUNCC(ff_h264_lowres_idct_add)(uint8_t *dst, int stride, DCTELEM *block){
FUNCC(idct_internal)(dst, block, stride, 8, 3, 1);
}
void FUNCC(ff_h264_lowres_idct_put)(uint8_t *dst, int stride, DCTELEM *block){
FUNCC(idct_internal)(dst, block, stride, 8, 3, 0);
}
void FUNCC(ff_h264_idct8_add)(uint8_t *p_dst, DCTELEM *p_block, int stride){
void FUNCC(ff_h264_idct8_add)(uint8_t *_dst, DCTELEM *_block, int stride){
int i;
INIT_CLIP
pixel *dst = (pixel*)p_dst;
dctcoef *block = (dctcoef*)p_block;
pixel *dst = (pixel*)_dst;
dctcoef *block = (dctcoef*)_block;
stride >>= sizeof(pixel)-1;
block[0] += 32;
@ -200,7 +189,7 @@ void FUNCC(ff_h264_idct_add16)(uint8_t *dst, const int *block_offset, DCTELEM *b
int nnz = nnzc[ scan8[i] ];
if(nnz){
if(nnz==1 && ((dctcoef*)block)[i*16]) FUNCC(ff_h264_idct_dc_add)(dst + block_offset[i], block + i*16*sizeof(pixel), stride);
else FUNCC(idct_internal )(dst + block_offset[i], block + i*16*sizeof(pixel), stride, 4, 6, 1);
else FUNCC(ff_h264_idct_add )(dst + block_offset[i], block + i*16*sizeof(pixel), stride);
}
}
}
@ -208,7 +197,7 @@ void FUNCC(ff_h264_idct_add16)(uint8_t *dst, const int *block_offset, DCTELEM *b
void FUNCC(ff_h264_idct_add16intra)(uint8_t *dst, const int *block_offset, DCTELEM *block, int stride, const uint8_t nnzc[15*8]){
int i;
for(i=0; i<16; i++){
if(nnzc[ scan8[i] ]) FUNCC(idct_internal )(dst + block_offset[i], block + i*16*sizeof(pixel), stride, 4, 6, 1);
if(nnzc[ scan8[i] ]) FUNCC(ff_h264_idct_add )(dst + block_offset[i], block + i*16*sizeof(pixel), stride);
else if(((dctcoef*)block)[i*16]) FUNCC(ff_h264_idct_dc_add)(dst + block_offset[i], block + i*16*sizeof(pixel), stride);
}
}

1
libavcodec/kgv1dec.c
Unescape View File

@ -174,6 +174,5 @@ AVCodec ff_kgv1_decoder = {
NULL,
decode_end,
decode_frame,
.max_lowres = 1,
.long_name = NULL_IF_CONFIG_SMALL("Kega Game Video"),
};

2
libavformat/matroskadec.c
Unescape View File

@ -931,6 +931,8 @@ static int matroska_probe(AVProbeData *p)
* Not fully fool-proof, but good enough. */
for (i = 0; i < FF_ARRAY_ELEMS(matroska_doctypes); i++) {
int probelen = strlen(matroska_doctypes[i]);
if (total < probelen)
continue;
for (n = 4+size; n <= 4+size+total-probelen; n++)
if (!memcmp(p->buf+n, matroska_doctypes[i], probelen))
return AVPROBE_SCORE_MAX;

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