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 \
{
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 */
/* 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++)
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++) {
}
/* LFE */
exponent_group_tab[0][0][7] = 2;
+
+ if (CONFIG_EAC3_ENCODER && s->eac3)
+ ff_eac3_exponent_init();
}
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;
}
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);
}
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 */
}
}
/* 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;
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
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,
#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){
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]);\
/*
- * E-AC-3 decoder tables
+ * E-AC-3 tables
* Copyright (c) 2007 Bartlomiej Wolowiec <bartek.wolowiec@gmail.com>
*
* This file is part of FFmpeg.
* 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] = {
/*
- * E-AC-3 decoder tables
+ * E-AC-3 tables
* Copyright (c) 2007 Bartlomiej Wolowiec <bartek.wolowiec@gmail.com>
*
* This file is part of FFmpeg.
* 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>
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 */
#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 {
#define CONFIG_AC3ENC_FLOAT 1
#include "ac3enc.h"
#include "eac3enc.h"
+#include "eac3_data.h"
#define AC3ENC_TYPE AC3ENC_TYPE_EAC3
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;
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 */
}
}
/* 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]);
#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
* whether they will be implicitly already known by the decoder.
}
}
}
-
-#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
}
/**
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");
};
#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;
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);
}
}
}
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);
}
}
NULL,
decode_end,
decode_frame,
- .max_lowres = 1,
.long_name = NULL_IF_CONFIG_SMALL("Kega Game Video"),
};
* 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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