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authorOded Shimon <ods15@ods15.dyndns.org>2006-10-01 11:59:33 +0000
committerOded Shimon <ods15@ods15.dyndns.org>2006-10-01 11:59:33 +0000
commit6c29d7c8f33b1aa7d02e9c9fdd41f8ced43b153f (patch)
treebeb4066b9ab38c1f24c988fdb38c3e4c497abcac /libavcodec/vorbis.c
parent9f963af5a0dae0e24285dca8b3a2e936e42afd96 (diff)
downloadffmpeg-6c29d7c8f33b1aa7d02e9c9fdd41f8ced43b153f.tar.gz
make some more functions global so they can be shared with vorbis_enc.c
Originally committed as revision 6402 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/vorbis.c')
-rw-r--r--libavcodec/vorbis.c89
1 files changed, 19 insertions, 70 deletions
diff --git a/libavcodec/vorbis.c b/libavcodec/vorbis.c
index 86b08fa03a..35a49439a8 100644
--- a/libavcodec/vorbis.c
+++ b/libavcodec/vorbis.c
@@ -160,12 +160,10 @@ typedef struct vorbis_context_s {
/* Helper functions */
-#define ilog(i) av_log2(2*(i))
-
#define BARK(x) \
(13.1f*atan(0.00074f*(x))+2.24f*atan(1.85e-8f*(x)*(x))+1e-4f*(x))
-static unsigned int nth_root(unsigned int x, unsigned int n) { // x^(1/n)
+unsigned int ff_vorbis_nth_root(unsigned int x, unsigned int n) { // x^(1/n)
unsigned int ret=0, i, j;
do {
@@ -186,7 +184,7 @@ static float vorbisfloat2float(uint_fast32_t val) {
// Generate vlc codes from vorbis huffman code lengths
-static int vorbis_len2vlc(vorbis_context *vc, uint_fast8_t *bits, uint_fast32_t *codes, uint_fast32_t num) {
+int ff_vorbis_len2vlc(uint8_t *bits, uint32_t *codes, uint_fast32_t num) {
uint_fast32_t exit_at_level[33]={404,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
@@ -209,12 +207,12 @@ static int vorbis_len2vlc(vorbis_context *vc, uint_fast8_t *bits, uint_fast32_t
}
#ifdef V_DEBUG
- av_log(vc->avccontext, AV_LOG_INFO, " %d. of %d code len %d code %d - ", p, num, bits[p], codes[p]);
+ av_log(NULL, AV_LOG_INFO, " %d. of %d code len %d code %d - ", p, num, bits[p], codes[p]);
init_get_bits(&gb, (uint_fast8_t *)&codes[p], bits[p]);
for(i=0;i<bits[p];++i) {
- av_log(vc->avccontext, AV_LOG_INFO, "%s", get_bits1(&gb) ? "1" : "0");
+ av_log(NULL, AV_LOG_INFO, "%s", get_bits1(&gb) ? "1" : "0");
}
- av_log(vc->avccontext, AV_LOG_INFO, "\n");
+ av_log(NULL, AV_LOG_INFO, "\n");
#endif
++p;
@@ -235,17 +233,19 @@ static int vorbis_len2vlc(vorbis_context *vc, uint_fast8_t *bits, uint_fast32_t
codes[p]=code;
#ifdef V_DEBUG
- av_log(vc->avccontext, AV_LOG_INFO, " %d. code len %d code %d - ", p, bits[p], codes[p]);
+ av_log(NULL, AV_LOG_INFO, " %d. code len %d code %d - ", p, bits[p], codes[p]);
init_get_bits(&gb, (uint_fast8_t *)&codes[p], bits[p]);
for(i=0;i<bits[p];++i) {
- av_log(vc->avccontext, AV_LOG_INFO, "%s", get_bits1(&gb) ? "1" : "0");
+ av_log(NULL, AV_LOG_INFO, "%s", get_bits1(&gb) ? "1" : "0");
}
- av_log(vc->avccontext, AV_LOG_INFO, "\n");
+ av_log(NULL, AV_LOG_INFO, "\n");
#endif
}
- //FIXME no exits should be left (underspecified tree - ie. unused valid vlcs - not allowed by SPEC)
+ //no exits should be left (underspecified tree - ie. unused valid vlcs - not allowed by SPEC)
+ for (p=1; p<33; p++)
+ if (exit_at_level[p]) return 1;
return 0;
}
@@ -336,8 +336,8 @@ static void vorbis_free(vorbis_context *vc) {
static int vorbis_parse_setup_hdr_codebooks(vorbis_context *vc) {
uint_fast16_t cb;
- uint_fast8_t *tmp_vlc_bits;
- uint_fast32_t *tmp_vlc_codes;
+ uint8_t *tmp_vlc_bits;
+ uint32_t *tmp_vlc_codes;
GetBitContext *gb=&vc->gb;
vc->codebook_count=get_bits(gb,8)+1;
@@ -345,8 +345,8 @@ static int vorbis_parse_setup_hdr_codebooks(vorbis_context *vc) {
AV_DEBUG(" Codebooks: %d \n", vc->codebook_count);
vc->codebooks=(vorbis_codebook *)av_mallocz(vc->codebook_count * sizeof(vorbis_codebook));
- tmp_vlc_bits=(uint_fast8_t *)av_mallocz(V_MAX_VLCS * sizeof(uint_fast8_t));
- tmp_vlc_codes=(uint_fast32_t *)av_mallocz(V_MAX_VLCS * sizeof(uint_fast32_t));
+ tmp_vlc_bits=(uint8_t *)av_mallocz(V_MAX_VLCS * sizeof(uint8_t));
+ tmp_vlc_codes=(uint32_t *)av_mallocz(V_MAX_VLCS * sizeof(uint32_t));
for(cb=0;cb<vc->codebook_count;++cb) {
vorbis_codebook *codebook_setup=&vc->codebooks[cb];
@@ -439,7 +439,7 @@ static int vorbis_parse_setup_hdr_codebooks(vorbis_context *vc) {
if (codebook_setup->lookup_type==1) {
uint_fast16_t i, j, k;
- uint_fast16_t codebook_lookup_values=nth_root(entries, codebook_setup->dimensions);
+ uint_fast16_t codebook_lookup_values=ff_vorbis_nth_root(entries, codebook_setup->dimensions);
uint_fast16_t codebook_multiplicands[codebook_lookup_values];
float codebook_minimum_value=vorbisfloat2float(get_bits_long(gb, 32));
@@ -503,7 +503,7 @@ static int vorbis_parse_setup_hdr_codebooks(vorbis_context *vc) {
}
// Initialize VLC table
- if (vorbis_len2vlc(vc, tmp_vlc_bits, tmp_vlc_codes, entries)) {
+ if (ff_vorbis_len2vlc(tmp_vlc_bits, tmp_vlc_codes, entries)) {
av_log(vc->avccontext, AV_LOG_ERROR, " Invalid code lengths while generating vlcs. \n");
goto error;
}
@@ -1363,59 +1363,10 @@ static uint_fast8_t vorbis_floor1_decode(vorbis_context *vc, vorbis_floor_data *
AV_DEBUG(" Looking at post %d \n", i);
if (floor1_flag[vf->list[i].sort]) { // SPEC mispelled
- int_fast16_t x, y, dy, base, sy; // if uncommented: dy = -32 adx = 2 base = 2blablabla ?????
-
hy=floor1_Y_final[vf->list[i].sort]*vf->multiplier;
hx=vf->list[vf->list[i].sort].x;
- dy=hy-ly;
- adx=hx-lx;
- ady= (dy<0) ? -dy:dy;//ABS(dy);
- base=(int16_t)dy/(int16_t)adx;
-
- AV_DEBUG(" dy %d adx %d base %d = %d \n", dy, adx, base, dy/adx);
-
- x=lx;
- y=ly;
- err=0;
- if (dy<0) {
- sy=base-1;
- } else {
- sy=base+1;
- }
- ady=ady-(base<0 ? -base : base)*adx;
- vec[x]=ff_vorbis_floor1_inverse_db_table[y];
-
- AV_DEBUG(" vec[ %d ] = %d \n", x, y);
-
- for(x=lx+1;(x<hx) && (x<vf->list[1].x);++x) {
- err+=ady;
- if (err>=adx) {
- err-=adx;
- y+=sy;
- } else {
- y+=base;
- }
- vec[x]=ff_vorbis_floor1_inverse_db_table[y];
-
- AV_DEBUG(" vec[ %d ] = %d \n", x, y);
- }
-
-/* for(j=1;j<hx-lx+1;++j) { // iterating render_point
- dy=hy-ly;
- adx=hx-lx;
- ady= dy<0 ? -dy : dy;
- err=ady*j;
- off=err/adx;
- if (dy<0) {
- predicted=ly-off;
- } else {
- predicted=ly+off;
- }
- if (lx+j < vf->x_list[1]) {
- vec[lx+j]=ff_vorbis_floor1_inverse_db_table[predicted];
- }
- }*/
+ render_line(lx, ly, hx, hy, vec, vc->blocksize[1]);
lx=hx;
ly=hy;
@@ -1423,9 +1374,7 @@ static uint_fast8_t vorbis_floor1_decode(vorbis_context *vc, vorbis_floor_data *
}
if (hx<vf->list[1].x) {
- for(i=hx;i<vf->list[1].x;++i) {
- vec[i]=ff_vorbis_floor1_inverse_db_table[hy];
- }
+ render_line(hx, hy, vf->list[1].x, hy, vec, vc->blocksize[1]);
}
AV_DEBUG(" Floor decoded\n");