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optimizations 

Originally committed as revision 1867 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2003-05-13 00:46:42 +00:00
parent f138f88364
commit 4704097a2b
4 changed files with 139 additions and 38 deletions
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57
libavcodec/golomb.c
View File

@ -95,3 +95,60 @@ const uint8_t ff_ue_golomb_len[256]={
15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,
15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,17,
};
const uint8_t ff_interleaved_golomb_vlc_len[256]={
9,9,7,7,9,9,7,7,5,5,5,5,5,5,5,5,
9,9,7,7,9,9,7,7,5,5,5,5,5,5,5,5,
3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,
3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,
9,9,7,7,9,9,7,7,5,5,5,5,5,5,5,5,
9,9,7,7,9,9,7,7,5,5,5,5,5,5,5,5,
3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,
3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
};
const uint8_t ff_interleaved_ue_golomb_vlc_code[256]={
15,16,7, 7, 17,18,8, 8, 3, 3, 3, 3, 3, 3, 3, 3,
19,20,9, 9, 21,22,10,10,4, 4, 4, 4, 4, 4, 4, 4,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
23,24,11,11,25,26,12,12,5, 5, 5, 5, 5, 5, 5, 5,
27,28,13,13,29,30,14,14,6, 6, 6, 6, 6, 6, 6, 6,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
};
const int8_t ff_interleaved_se_golomb_vlc_code[256]={
8, -8, 4, 4, 9, -9, -4, -4, 2, 2, 2, 2, 2, 2, 2, 2,
10,-10, 5, 5, 11,-11, -5, -5, -2, -2, -2, -2, -2, -2, -2, -2,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
12,-12, 6, 6, 13,-13, -6, -6, 3, 3, 3, 3, 3, 3, 3, 3,
14,-14, 7, 7, 15,-15, -7, -7, -3, -3, -3, -3, -3, -3, -3, -3,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
};

64
libavcodec/golomb.h
View File

@ -32,6 +32,10 @@ extern const uint8_t ff_ue_golomb_vlc_code[512];
extern const int8_t ff_se_golomb_vlc_code[512];
extern const uint8_t ff_ue_golomb_len[256];
extern const uint8_t ff_interleaved_golomb_vlc_len[256];
extern const uint8_t ff_interleaved_ue_golomb_vlc_code[256];
extern const int8_t ff_interleaved_se_golomb_vlc_code[256];
/**
* read unsigned exp golomb code.
@ -62,24 +66,33 @@ static inline int get_ue_golomb(GetBitContext *gb){
}
static inline int svq3_get_ue_golomb(GetBitContext *gb){
unsigned int buf;
uint32_t buf;
int log;
OPEN_READER(re, gb);
UPDATE_CACHE(re, gb);
buf=GET_CACHE(re, gb)|1;
buf=GET_CACHE(re, gb);
if(buf&0xAA800000){
buf >>= 32 - 8;
LAST_SKIP_BITS(re, gb, ff_interleaved_golomb_vlc_len[buf]);
CLOSE_READER(re, gb);
return ff_interleaved_ue_golomb_vlc_code[buf];
}else{
buf|=1;
if((buf & 0xAAAAAAAA) == 0)
return INVALID_VLC;
if((buf & 0xAAAAAAAA) == 0)
return INVALID_VLC;
for(log=31; (buf & 0x80000000) == 0; log--){
buf = (buf << 2) - ((buf << log) >> (log - 1)) + (buf >> 30);
}
for(log=31; (buf & 0x80000000) == 0; log--){
buf = (buf << 2) - ((buf << log) >> (log - 1)) + (buf >> 30);
LAST_SKIP_BITS(re, gb, 63 - 2*log);
CLOSE_READER(re, gb);
return ((buf << log) >> log) - 1;
}
LAST_SKIP_BITS(re, gb, 63 - 2*log);
CLOSE_READER(re, gb);
return ((buf << log) >> log) - 1;
}
/**
@ -141,19 +154,28 @@ static inline int svq3_get_se_golomb(GetBitContext *gb){
OPEN_READER(re, gb);
UPDATE_CACHE(re, gb);
buf=GET_CACHE(re, gb)|1;
buf=GET_CACHE(re, gb);
if((buf & 0xAAAAAAAA) == 0)
return INVALID_VLC;
if(buf&0xAA800000){
buf >>= 32 - 8;
LAST_SKIP_BITS(re, gb, ff_interleaved_golomb_vlc_len[buf]);
CLOSE_READER(re, gb);
return ff_interleaved_se_golomb_vlc_code[buf];
}else{
buf |=1;
if((buf & 0xAAAAAAAA) == 0)
return INVALID_VLC;
for(log=31; (buf & 0x80000000) == 0; log--){
buf = (buf << 2) - ((buf << log) >> (log - 1)) + (buf >> 30);
for(log=31; (buf & 0x80000000) == 0; log--){
buf = (buf << 2) - ((buf << log) >> (log - 1)) + (buf >> 30);
}
LAST_SKIP_BITS(re, gb, 63 - 2*log);
CLOSE_READER(re, gb);
return (signed) (((((buf << log) >> log) - 1) ^ -(buf & 0x1)) + 1) >> 1;
}
LAST_SKIP_BITS(re, gb, 63 - 2*log);
CLOSE_READER(re, gb);
return (signed) (((((buf << log) >> log) - 1) ^ -(buf & 0x1)) + 1) >> 1;
}
#ifdef TRACE

49
libavcodec/h264.c
View File

@ -2278,13 +2278,19 @@ static void hl_decode_mb(H264Context *h){
if(!IS_INTRA4x4(mb_type)){
for(i=0; i<16; i++){
if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ //FIXME benchmark weird rule, & below
uint8_t * const ptr= dest_y + h->block_offset[i];
if(s->codec_id == CODEC_ID_H264)
if(s->codec_id == CODEC_ID_H264){
for(i=0; i<16; i++){
if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ //FIXME benchmark weird rule, & below
uint8_t * const ptr= dest_y + h->block_offset[i];
h264_add_idct_c(ptr, h->mb + i*16, linesize);
else
}
}
}else{
for(i=0; i<16; i++){
if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ //FIXME benchmark weird rule, & below
uint8_t * const ptr= dest_y + h->block_offset[i];
svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, IS_INTRA(mb_type) ? 1 : 0);
}
}
}
}
@ -2292,22 +2298,31 @@ static void hl_decode_mb(H264Context *h){
if(!(s->flags&CODEC_FLAG_GRAY)){
chroma_dc_dequant_idct_c(h->mb + 16*16, h->chroma_qp);
chroma_dc_dequant_idct_c(h->mb + 16*16+4*16, h->chroma_qp);
for(i=16; i<16+4; i++){
if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
uint8_t * const ptr= dest_cb + h->block_offset[i];
if(s->codec_id == CODEC_ID_H264)
if(s->codec_id == CODEC_ID_H264){
for(i=16; i<16+4; i++){
if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
uint8_t * const ptr= dest_cb + h->block_offset[i];
h264_add_idct_c(ptr, h->mb + i*16, uvlinesize);
else
svq3_add_idct_c(ptr, h->mb + i*16, uvlinesize, chroma_qp[s->qscale + 12] - 12, 2);
}
}
}
for(i=20; i<20+4; i++){
if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
uint8_t * const ptr= dest_cr + h->block_offset[i];
if(s->codec_id == CODEC_ID_H264)
for(i=20; i<20+4; i++){
if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
uint8_t * const ptr= dest_cr + h->block_offset[i];
h264_add_idct_c(ptr, h->mb + i*16, uvlinesize);
else
}
}
}else{
for(i=16; i<16+4; i++){
if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
uint8_t * const ptr= dest_cb + h->block_offset[i];
svq3_add_idct_c(ptr, h->mb + i*16, uvlinesize, chroma_qp[s->qscale + 12] - 12, 2);
}
}
for(i=20; i<20+4; i++){
if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
uint8_t * const ptr= dest_cr + h->block_offset[i];
svq3_add_idct_c(ptr, h->mb + i*16, uvlinesize, chroma_qp[s->qscale + 12] - 12, 2);
}
}
}
}

7
libavcodec/svq3.c
View File

@ -729,6 +729,13 @@ static int svq3_decode_frame (AVCodecContext *avctx,
while (get_bits (&s->gb, 1)) {
get_bits (&s->gb, 8);
}
if(avctx->debug&FF_DEBUG_PICT_INFO){
printf("%c hpel:%d, tpel:%d aqp:%d qp:%d\n",
ff_get_pict_type_char(s->pict_type), h->halfpel_flag, h->thirdpel_flag,
s->adaptive_quant, s->qscale
);
}
/* B-frames are not supported */
if (s->pict_type == B_TYPE/* && avctx->hurry_up*/)