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ffmpeg.wasm-core
Commit c3a76c3d authored by Anton Khirnov's avatar Anton Khirnov
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asvdec: cosmetics, reformat

parent bdfa2451
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Showing with 128 additions and 102 deletions
libavcodec/asvdec.c
View file @ c3a76c3d
...@@ -46,124 +46,148 @@ static VLC dc_ccp_vlc; ...@@ -46,124 +46,148 @@ static VLC dc_ccp_vlc;
static VLC ac_ccp_vlc; static VLC ac_ccp_vlc;
static VLC asv2_level_vlc; static VLC asv2_level_vlc;
static av_cold void init_vlcs(ASV1Context *a){ static av_cold void init_vlcs(ASV1Context *a)
{
static int done = 0; static int done = 0;
if (!done) { if (!done) {
done = 1; done = 1;
INIT_VLC_STATIC(&ccp_vlc, VLC_BITS, 17, INIT_VLC_STATIC(&ccp_vlc, VLC_BITS, 17,
&ff_asv_ccp_tab[0][1], 2, 1, &ff_asv_ccp_tab[0][1], 2, 1,
&ff_asv_ccp_tab[0][0], 2, 1, 64); &ff_asv_ccp_tab[0][0], 2, 1, 64);
INIT_VLC_STATIC(&dc_ccp_vlc, VLC_BITS, 8, INIT_VLC_STATIC(&dc_ccp_vlc, VLC_BITS, 8,
&ff_asv_dc_ccp_tab[0][1], 2, 1, &ff_asv_dc_ccp_tab[0][1], 2, 1,
&ff_asv_dc_ccp_tab[0][0], 2, 1, 64); &ff_asv_dc_ccp_tab[0][0], 2, 1, 64);
INIT_VLC_STATIC(&ac_ccp_vlc, VLC_BITS, 16, INIT_VLC_STATIC(&ac_ccp_vlc, VLC_BITS, 16,
&ff_asv_ac_ccp_tab[0][1], 2, 1, &ff_asv_ac_ccp_tab[0][1], 2, 1,
&ff_asv_ac_ccp_tab[0][0], 2, 1, 64); &ff_asv_ac_ccp_tab[0][0], 2, 1, 64);
INIT_VLC_STATIC(&level_vlc, VLC_BITS, 7, INIT_VLC_STATIC(&level_vlc, VLC_BITS, 7,
&ff_asv_level_tab[0][1], 2, 1, &ff_asv_level_tab[0][1], 2, 1,
&ff_asv_level_tab[0][0], 2, 1, 64); &ff_asv_level_tab[0][0], 2, 1, 64);
INIT_VLC_STATIC(&asv2_level_vlc, ASV2_LEVEL_VLC_BITS, 63, INIT_VLC_STATIC(&asv2_level_vlc, ASV2_LEVEL_VLC_BITS, 63,
&ff_asv2_level_tab[0][1], 2, 1, &ff_asv2_level_tab[0][1], 2, 1,
&ff_asv2_level_tab[0][0], 2, 1, 1024); &ff_asv2_level_tab[0][0], 2, 1, 1024);
} }
} }
//FIXME write a reversed bitstream reader to avoid the double reverse //FIXME write a reversed bitstream reader to avoid the double reverse
static inline int asv2_get_bits(GetBitContext *gb, int n){ static inline int asv2_get_bits(GetBitContext *gb, int n)
return ff_reverse[ get_bits(gb, n) << (8-n) ]; {
return ff_reverse[get_bits(gb, n) << (8-n)];
} }
static inline int asv1_get_level(GetBitContext *gb){ static inline int asv1_get_level(GetBitContext *gb)
int code= get_vlc2(gb, level_vlc.table, VLC_BITS, 1); {
int code = get_vlc2(gb, level_vlc.table, VLC_BITS, 1);
if(code==3) return get_sbits(gb, 8); if (code == 3)
else return code - 3; return get_sbits(gb, 8);
else
return code - 3;
} }
static inline int asv2_get_level(GetBitContext *gb){ static inline int asv2_get_level(GetBitContext *gb)
int code= get_vlc2(gb, asv2_level_vlc.table, ASV2_LEVEL_VLC_BITS, 1); {
int code = get_vlc2(gb, asv2_level_vlc.table, ASV2_LEVEL_VLC_BITS, 1);
if(code==31) return (int8_t)asv2_get_bits(gb, 8); if (code == 31)
else return code - 31; return (int8_t)asv2_get_bits(gb, 8);
else
return code - 31;
} }
static inline int asv1_decode_block(ASV1Context *a, DCTELEM block[64]){ static inline int asv1_decode_block(ASV1Context *a, DCTELEM block[64])
{
int i; int i;
block[0]= 8*get_bits(&a->gb, 8); block[0] = 8 * get_bits(&a->gb, 8);
for(i=0; i<11; i++){ for (i = 0; i < 11; i++) {
const int ccp= get_vlc2(&a->gb, ccp_vlc.table, VLC_BITS, 1); const int ccp = get_vlc2(&a->gb, ccp_vlc.table, VLC_BITS, 1);
if(ccp){ if (ccp) {
if(ccp == 16) break; if (ccp == 16)
if(ccp < 0 || i>=10){ break;
if (ccp < 0 || i >= 10) {
av_log(a->avctx, AV_LOG_ERROR, "coded coeff pattern damaged\n"); av_log(a->avctx, AV_LOG_ERROR, "coded coeff pattern damaged\n");
return -1; return -1;
} }
if(ccp&8) block[a->scantable.permutated[4*i+0]]= (asv1_get_level(&a->gb) * a->intra_matrix[4*i+0])>>4; if (ccp & 8)
if(ccp&4) block[a->scantable.permutated[4*i+1]]= (asv1_get_level(&a->gb) * a->intra_matrix[4*i+1])>>4; block[a->scantable.permutated[4 * i + 0]] = (asv1_get_level(&a->gb) * a->intra_matrix[4 * i + 0]) >> 4;
if(ccp&2) block[a->scantable.permutated[4*i+2]]= (asv1_get_level(&a->gb) * a->intra_matrix[4*i+2])>>4; if (ccp & 4)
if(ccp&1) block[a->scantable.permutated[4*i+3]]= (asv1_get_level(&a->gb) * a->intra_matrix[4*i+3])>>4; block[a->scantable.permutated[4 * i + 1]] = (asv1_get_level(&a->gb) * a->intra_matrix[4 * i + 1]) >> 4;
if (ccp & 2)
block[a->scantable.permutated[4 * i + 2]] = (asv1_get_level(&a->gb) * a->intra_matrix[4 * i + 2]) >> 4;
if (ccp & 1)
block[a->scantable.permutated[4 * i + 3]] = (asv1_get_level(&a->gb) * a->intra_matrix[4 * i + 3]) >> 4;
} }
} }
return 0; return 0;
} }
static inline int asv2_decode_block(ASV1Context *a, DCTELEM block[64]){ static inline int asv2_decode_block(ASV1Context *a, DCTELEM block[64])
{
int i, count, ccp; int i, count, ccp;
count= asv2_get_bits(&a->gb, 4); count = asv2_get_bits(&a->gb, 4);
block[0]= 8*asv2_get_bits(&a->gb, 8); block[0] = 8 * asv2_get_bits(&a->gb, 8);
ccp= get_vlc2(&a->gb, dc_ccp_vlc.table, VLC_BITS, 1); ccp = get_vlc2(&a->gb, dc_ccp_vlc.table, VLC_BITS, 1);
if(ccp){ if (ccp) {
if(ccp&4) block[a->scantable.permutated[1]]= (asv2_get_level(&a->gb) * a->intra_matrix[1])>>4; if (ccp & 4)
if(ccp&2) block[a->scantable.permutated[2]]= (asv2_get_level(&a->gb) * a->intra_matrix[2])>>4; block[a->scantable.permutated[1]] = (asv2_get_level(&a->gb) * a->intra_matrix[1]) >> 4;
if(ccp&1) block[a->scantable.permutated[3]]= (asv2_get_level(&a->gb) * a->intra_matrix[3])>>4; if (ccp & 2)
block[a->scantable.permutated[2]] = (asv2_get_level(&a->gb) * a->intra_matrix[2]) >> 4;
if (ccp & 1)
block[a->scantable.permutated[3]] = (asv2_get_level(&a->gb) * a->intra_matrix[3]) >> 4;
} }
for(i=1; i<count+1; i++){ for (i = 1; i < count + 1; i++) {
const int ccp= get_vlc2(&a->gb, ac_ccp_vlc.table, VLC_BITS, 1); const int ccp = get_vlc2(&a->gb, ac_ccp_vlc.table, VLC_BITS, 1);
if(ccp){ if (ccp) {
if(ccp&8) block[a->scantable.permutated[4*i+0]]= (asv2_get_level(&a->gb) * a->intra_matrix[4*i+0])>>4; if (ccp & 8)
if(ccp&4) block[a->scantable.permutated[4*i+1]]= (asv2_get_level(&a->gb) * a->intra_matrix[4*i+1])>>4; block[a->scantable.permutated[4*i + 0]] = (asv2_get_level(&a->gb) * a->intra_matrix[4*i + 0]) >> 4;
if(ccp&2) block[a->scantable.permutated[4*i+2]]= (asv2_get_level(&a->gb) * a->intra_matrix[4*i+2])>>4; if (ccp & 4)
if(ccp&1) block[a->scantable.permutated[4*i+3]]= (asv2_get_level(&a->gb) * a->intra_matrix[4*i+3])>>4; block[a->scantable.permutated[4*i + 1]] = (asv2_get_level(&a->gb) * a->intra_matrix[4*i + 1]) >> 4;
if (ccp & 2)
block[a->scantable.permutated[4*i + 2]] = (asv2_get_level(&a->gb) * a->intra_matrix[4*i + 2]) >> 4;
if (ccp & 1)
block[a->scantable.permutated[4*i + 3]] = (asv2_get_level(&a->gb) * a->intra_matrix[4*i + 3]) >> 4;
} }
} }
return 0; return 0;
} }
static inline int decode_mb(ASV1Context *a, DCTELEM block[6][64]){ static inline int decode_mb(ASV1Context *a, DCTELEM block[6][64])
{
int i; int i;
a->dsp.clear_blocks(block[0]); a->dsp.clear_blocks(block[0]);
if(a->avctx->codec_id == AV_CODEC_ID_ASV1){ if (a->avctx->codec_id == AV_CODEC_ID_ASV1) {
for(i=0; i<6; i++){ for (i = 0; i < 6; i++) {
if( asv1_decode_block(a, block[i]) < 0) if (asv1_decode_block(a, block[i]) < 0)
return -1; return -1;
} }
}else{ } else {
for(i=0; i<6; i++){ for (i = 0; i < 6; i++) {
if( asv2_decode_block(a, block[i]) < 0) if (asv2_decode_block(a, block[i]) < 0)
return -1; return -1;
} }
} }
return 0; return 0;
} }
static inline void idct_put(ASV1Context *a, int mb_x, int mb_y){ static inline void idct_put(ASV1Context *a, int mb_x, int mb_y)
DCTELEM (*block)[64]= a->block; {
int linesize= a->picture.linesize[0]; DCTELEM (*block)[64] = a->block;
int linesize = a->picture.linesize[0];
uint8_t *dest_y = a->picture.data[0] + (mb_y * 16* linesize ) + mb_x * 16; uint8_t *dest_y = a->picture.data[0] + (mb_y * 16* linesize ) + mb_x * 16;
uint8_t *dest_cb = a->picture.data[1] + (mb_y * 8 * a->picture.linesize[1]) + mb_x * 8; uint8_t *dest_cb = a->picture.data[1] + (mb_y * 8 * a->picture.linesize[1]) + mb_x * 8;
...@@ -174,7 +198,7 @@ static inline void idct_put(ASV1Context *a, int mb_x, int mb_y){ ...@@ -174,7 +198,7 @@ static inline void idct_put(ASV1Context *a, int mb_x, int mb_y){
a->dsp.idct_put(dest_y + 8*linesize , linesize, block[2]); a->dsp.idct_put(dest_y + 8*linesize , linesize, block[2]);
a->dsp.idct_put(dest_y + 8*linesize + 8, linesize, block[3]); a->dsp.idct_put(dest_y + 8*linesize + 8, linesize, block[3]);
if(!(a->avctx->flags&CODEC_FLAG_GRAY)){ if (!(a->avctx->flags&CODEC_FLAG_GRAY)) {
a->dsp.idct_put(dest_cb, a->picture.linesize[1], block[4]); a->dsp.idct_put(dest_cb, a->picture.linesize[1], block[4]);
a->dsp.idct_put(dest_cr, a->picture.linesize[2], block[5]); a->dsp.idct_put(dest_cr, a->picture.linesize[2], block[5]);
} }
...@@ -184,62 +208,62 @@ static int decode_frame(AVCodecContext *avctx, ...@@ -184,62 +208,62 @@ static int decode_frame(AVCodecContext *avctx,
void *data, int *got_frame, void *data, int *got_frame,
AVPacket *avpkt) AVPacket *avpkt)
{ {
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
ASV1Context * const a = avctx->priv_data; ASV1Context * const a = avctx->priv_data;
AVFrame *picture = data; const uint8_t *buf = avpkt->data;
AVFrame * const p= &a->picture; int buf_size = avpkt->size;
AVFrame *picture = data;
AVFrame * const p = &a->picture;
int mb_x, mb_y; int mb_x, mb_y;
if(p->data[0]) if (p->data[0])
avctx->release_buffer(avctx, p); avctx->release_buffer(avctx, p);
p->reference= 0; p->reference = 0;
if(ff_get_buffer(avctx, p) < 0){ if (ff_get_buffer(avctx, p) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n"); av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return -1; return -1;
} }
p->pict_type= AV_PICTURE_TYPE_I; p->pict_type = AV_PICTURE_TYPE_I;
p->key_frame= 1; p->key_frame = 1;
av_fast_padded_malloc(&a->bitstream_buffer, &a->bitstream_buffer_size, av_fast_padded_malloc(&a->bitstream_buffer, &a->bitstream_buffer_size,
buf_size); buf_size);
if (!a->bitstream_buffer) if (!a->bitstream_buffer)
return AVERROR(ENOMEM); return AVERROR(ENOMEM);
if(avctx->codec_id == AV_CODEC_ID_ASV1) if (avctx->codec_id == AV_CODEC_ID_ASV1)
a->dsp.bswap_buf((uint32_t*)a->bitstream_buffer, (const uint32_t*)buf, buf_size/4); a->dsp.bswap_buf((uint32_t*)a->bitstream_buffer, (const uint32_t*)buf, buf_size/4);
else{ else {
int i; int i;
for(i=0; i<buf_size; i++) for (i = 0; i < buf_size; i++)
a->bitstream_buffer[i]= ff_reverse[ buf[i] ]; a->bitstream_buffer[i] = ff_reverse[buf[i]];
} }
init_get_bits(&a->gb, a->bitstream_buffer, buf_size*8); init_get_bits(&a->gb, a->bitstream_buffer, buf_size*8);
for(mb_y=0; mb_y<a->mb_height2; mb_y++){ for (mb_y = 0; mb_y < a->mb_height2; mb_y++) {
for(mb_x=0; mb_x<a->mb_width2; mb_x++){ for (mb_x = 0; mb_x < a->mb_width2; mb_x++) {
if( decode_mb(a, a->block) <0) if (decode_mb(a, a->block) < 0)
return -1; return -1;
idct_put(a, mb_x, mb_y); idct_put(a, mb_x, mb_y);
} }
} }
if(a->mb_width2 != a->mb_width){ if (a->mb_width2 != a->mb_width) {
mb_x= a->mb_width2; mb_x = a->mb_width2;
for(mb_y=0; mb_y<a->mb_height2; mb_y++){ for (mb_y = 0; mb_y < a->mb_height2; mb_y++) {
if( decode_mb(a, a->block) <0) if (decode_mb(a, a->block) < 0)
return -1; return -1;
idct_put(a, mb_x, mb_y); idct_put(a, mb_x, mb_y);
} }
} }
if(a->mb_height2 != a->mb_height){ if (a->mb_height2 != a->mb_height) {
mb_y= a->mb_height2; mb_y = a->mb_height2;
for(mb_x=0; mb_x<a->mb_width; mb_x++){ for (mb_x = 0; mb_x < a->mb_width; mb_x++) {
if( decode_mb(a, a->block) <0) if (decode_mb(a, a->block) < 0)
return -1; return -1;
idct_put(a, mb_x, mb_y); idct_put(a, mb_x, mb_y);
...@@ -251,51 +275,53 @@ static int decode_frame(AVCodecContext *avctx, ...@@ -251,51 +275,53 @@ static int decode_frame(AVCodecContext *avctx,
emms_c(); emms_c();
return (get_bits_count(&a->gb)+31)/32*4; return (get_bits_count(&a->gb) + 31) / 32 * 4;
} }
static av_cold int decode_init(AVCodecContext *avctx){ static av_cold int decode_init(AVCodecContext *avctx)
{
ASV1Context * const a = avctx->priv_data; ASV1Context * const a = avctx->priv_data;
AVFrame *p= &a->picture; AVFrame *p = &a->picture;
const int scale = avctx->codec_id == AV_CODEC_ID_ASV1 ? 1 : 2;
int i; int i;
const int scale= avctx->codec_id == AV_CODEC_ID_ASV1 ? 1 : 2;
ff_asv_common_init(avctx); ff_asv_common_init(avctx);
init_vlcs(a); init_vlcs(a);
ff_init_scantable(a->dsp.idct_permutation, &a->scantable, ff_asv_scantab); ff_init_scantable(a->dsp.idct_permutation, &a->scantable, ff_asv_scantab);
avctx->pix_fmt= AV_PIX_FMT_YUV420P; avctx->pix_fmt = AV_PIX_FMT_YUV420P;
a->inv_qscale= avctx->extradata[0]; a->inv_qscale = avctx->extradata[0];
if(a->inv_qscale == 0){ if (a->inv_qscale == 0) {
av_log(avctx, AV_LOG_ERROR, "illegal qscale 0\n"); av_log(avctx, AV_LOG_ERROR, "illegal qscale 0\n");
if(avctx->codec_id == AV_CODEC_ID_ASV1) if (avctx->codec_id == AV_CODEC_ID_ASV1)
a->inv_qscale= 6; a->inv_qscale = 6;
else else
a->inv_qscale= 10; a->inv_qscale = 10;
} }
for(i=0; i<64; i++){ for (i = 0; i < 64; i++) {
int index = ff_asv_scantab[i]; int index = ff_asv_scantab[i];
a->intra_matrix[i]= 64*scale*ff_mpeg1_default_intra_matrix[index] / a->inv_qscale; a->intra_matrix[i] = 64 * scale * ff_mpeg1_default_intra_matrix[index] / a->inv_qscale;
} }
p->qstride= a->mb_width; p->qstride = a->mb_width;
p->qscale_table= av_malloc( p->qstride * a->mb_height); p->qscale_table = av_malloc(p->qstride * a->mb_height);
p->quality= (32*scale + a->inv_qscale/2)/a->inv_qscale; p->quality = (32 * scale + a->inv_qscale / 2) / a->inv_qscale;
memset(p->qscale_table, p->quality, p->qstride*a->mb_height); memset(p->qscale_table, p->quality, p->qstride * a->mb_height);
return 0; return 0;
} }
static av_cold int decode_end(AVCodecContext *avctx){ static av_cold int decode_end(AVCodecContext *avctx)
{
ASV1Context * const a = avctx->priv_data; ASV1Context * const a = avctx->priv_data;
av_freep(&a->bitstream_buffer); av_freep(&a->bitstream_buffer);
av_freep(&a->picture.qscale_table); av_freep(&a->picture.qscale_table);
a->bitstream_buffer_size=0; a->bitstream_buffer_size = 0;
if(a->picture.data[0]) if (a->picture.data[0])
avctx->release_buffer(avctx, &a->picture); avctx->release_buffer(avctx, &a->picture);
return 0; return 0;
......
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