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Code Issues Releases Activity

brace placement and linebreak cosmetics

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Originally committed as revision 20070 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Diego Biurrun 2009-09-28 21:13:47 +00:00
parent 754ff9a795
commit 5e56b30e1f
5 changed files with 226 additions and 162 deletions
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38
libavcodec/vorbis.c
View File

@ -32,7 +32,9 @@
/* Helper functions */
unsigned int ff_vorbis_nth_root(unsigned int x, unsigned int n) { // x^(1/n)
// x^(1/n)
unsigned int ff_vorbis_nth_root(unsigned int x, unsigned int n)
{
unsigned int ret=0, i, j;
do {
@ -48,7 +50,8 @@ unsigned int ff_vorbis_nth_root(unsigned int x, unsigned int n) { // x^(1/n)
// the two bits[p] > 32 checks should be redundant, all calling code should
// already ensure that, but since it allows overwriting the stack it seems
// reasonable to check redundantly.
int ff_vorbis_len2vlc(uint8_t *bits, uint32_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};
@ -67,16 +70,14 @@ int ff_vorbis_len2vlc(uint8_t *bits, uint32_t *codes, uint_fast32_t num) {
codes[p]=0;
if (bits[p] > 32) return 1;
for(i=0;i<bits[p];++i) {
for(i=0;i<bits[p];++i)
exit_at_level[i+1]=1<<i;
}
#ifdef V_DEBUG
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) {
for(i=0;i<bits[p];++i)
av_log(NULL, AV_LOG_INFO, "%s", get_bits1(&gb) ? "1" : "0");
}
av_log(NULL, AV_LOG_INFO, "\n");
#endif
@ -86,24 +87,21 @@ int ff_vorbis_len2vlc(uint8_t *bits, uint32_t *codes, uint_fast32_t num) {
if (bits[p] > 32) return 1;
if (bits[p]==0) continue;
// find corresponding exit(node which the tree can grow further from)
for(i=bits[p];i>0;--i) {
for(i=bits[p];i>0;--i)
if (exit_at_level[i]) break;
}
if (!i) return 1; // overspecified tree
code=exit_at_level[i];
exit_at_level[i]=0;
// construct code (append 0s to end) and introduce new exits
for(j=i+1;j<=bits[p];++j) {
for(j=i+1;j<=bits[p];++j)
exit_at_level[j]=code+(1<<(j-1));
}
codes[p]=code;
#ifdef V_DEBUG
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) {
for(i=0;i<bits[p];++i)
av_log(NULL, AV_LOG_INFO, "%s", get_bits1(&gb) ? "1" : "0");
}
av_log(NULL, AV_LOG_INFO, "\n");
#endif
@ -116,7 +114,8 @@ int ff_vorbis_len2vlc(uint8_t *bits, uint32_t *codes, uint_fast32_t num) {
return 0;
}
void ff_vorbis_ready_floor1_list(vorbis_floor1_entry * list, int values) {
void ff_vorbis_ready_floor1_list(vorbis_floor1_entry * list, int values)
{
int i;
list[0].sort = 0;
list[1].sort = 1;
@ -146,7 +145,10 @@ void ff_vorbis_ready_floor1_list(vorbis_floor1_entry * list, int values) {
}
}
static inline void render_line_unrolled(intptr_t x, intptr_t y, int x1, intptr_t sy, int ady, int adx, float * buf) {
static inline void render_line_unrolled(intptr_t x, intptr_t y, int x1,
intptr_t sy, int ady, int adx,
float * buf)
{
int err = -adx;
x -= x1-1;
buf += x1-1;
@ -166,7 +168,8 @@ static inline void render_line_unrolled(intptr_t x, intptr_t y, int x1, intptr_t
}
}
static void render_line(int x0, int y0, int x1, int y1, float * buf) {
static void render_line(int x0, int y0, int x1, int y1, float * buf)
{
int dy = y1 - y0;
int adx = x1 - x0;
int ady = FFABS(dy);
@ -192,7 +195,10 @@ static void render_line(int x0, int y0, int x1, int y1, float * buf) {
}
}
void ff_vorbis_floor1_render_list(vorbis_floor1_entry * list, int values, uint_fast16_t * y_list, int * flag, int multiplier, float * out, int samples) {
void ff_vorbis_floor1_render_list(vorbis_floor1_entry * list, int values,
uint_fast16_t * y_list, int * flag,
int multiplier, float * out, int samples)
{
int lx, ly, i;
lx = 0;
ly = y_list[0] * multiplier;

4
libavcodec/vorbis.h
View File

@ -36,7 +36,9 @@ typedef struct {
void ff_vorbis_ready_floor1_list(vorbis_floor1_entry * list, int values);
unsigned int ff_vorbis_nth_root(unsigned int x, unsigned int n); // x^(1/n)
int ff_vorbis_len2vlc(uint8_t *bits, uint32_t *codes, uint_fast32_t num);
void ff_vorbis_floor1_render_list(vorbis_floor1_entry * list, int values, uint_fast16_t * y_list, int * flag, int multiplier, float * out, int samples);
void ff_vorbis_floor1_render_list(vorbis_floor1_entry * list, int values,
uint_fast16_t * y_list, int * flag,
int multiplier, float * out, int samples);
#define ilog(i) av_log2(2*(i))

5
libavcodec/vorbis_data.c
View File

@ -2152,5 +2152,8 @@ const float ff_vorbis_floor1_inverse_db_table[256]={
0.82788260F, 0.88168307F, 0.9389798F, 1.F,
};
const float * const ff_vorbis_vwin[8] = { vwin64, vwin128, vwin256, vwin512, vwin1024, vwin2048, vwin4096, vwin8192 };
const float * const ff_vorbis_vwin[8] = {
vwin64, vwin128, vwin256, vwin512,
vwin1024, vwin2048, vwin4096, vwin8192
};

188
libavcodec/vorbis_dec.c
View File

@ -65,10 +65,8 @@ uint_fast8_t (* vorbis_floor_decode_func)
typedef struct {
uint_fast8_t floor_type;
vorbis_floor_decode_func decode;
union vorbis_floor_u
{
struct vorbis_floor0_s
{
union vorbis_floor_u {
struct vorbis_floor0_s {
uint_fast8_t order;
uint_fast16_t rate;
uint_fast16_t bark_map_size;
@ -80,8 +78,7 @@ typedef struct {
uint_fast8_t * book_list;
float * lsp;
} t0;
struct vorbis_floor1_s
{
struct vorbis_floor1_s {
uint_fast8_t partitions;
uint_fast8_t maximum_class;
uint_fast8_t partition_class[32];
@ -163,17 +160,20 @@ typedef struct vorbis_context_s {
#define BARK(x) \
(13.1f*atan(0.00074f*(x))+2.24f*atan(1.85e-8f*(x)*(x))+1e-4f*(x))
static float vorbisfloat2float(uint_fast32_t val) {
static float vorbisfloat2float(uint_fast32_t val)
{
double mant=val&0x1fffff;
long exp=(val&0x7fe00000L)>>21;
if (val&0x80000000) mant=-mant;
if (val&0x80000000)
mant=-mant;
return ldexp(mant, exp - 20 - 768);
}
// Free all allocated memory -----------------------------------------
static void vorbis_free(vorbis_context *vc) {
static void vorbis_free(vorbis_context *vc)
{
int_fast16_t i;
av_freep(&vc->channel_residues);
@ -198,8 +198,7 @@ static void vorbis_free(vorbis_context *vc) {
av_free(vc->floors[i].data.t0.map[1]);
av_free(vc->floors[i].data.t0.book_list);
av_free(vc->floors[i].data.t0.lsp);
}
else {
} else {
av_free(vc->floors[i].data.t1.list);
}
}
@ -217,7 +216,8 @@ static void vorbis_free(vorbis_context *vc) {
// Process codebooks part
static int vorbis_parse_setup_hdr_codebooks(vorbis_context *vc) {
static int vorbis_parse_setup_hdr_codebooks(vorbis_context *vc)
{
uint_fast16_t cb;
uint8_t *tmp_vlc_bits;
uint32_t *tmp_vlc_codes;
@ -275,17 +275,16 @@ static int vorbis_parse_setup_hdr_codebooks(vorbis_context *vc) {
if (flag) {
tmp_vlc_bits[ce]=get_bits(gb, 5)+1;
++used_entries;
}
else tmp_vlc_bits[ce]=0;
} else
tmp_vlc_bits[ce]=0;
}
} else {
AV_DEBUG(" not sparse \n");
used_entries=entries;
for(ce=0;ce<entries;++ce) {
for(ce=0;ce<entries;++ce)
tmp_vlc_bits[ce]=get_bits(gb, 5)+1;
}
}
} else {
uint_fast16_t current_entry=0;
uint_fast8_t current_length=get_bits(gb, 5)+1;
@ -302,9 +301,9 @@ static int vorbis_parse_setup_hdr_codebooks(vorbis_context *vc) {
AV_DEBUG(" number: %d \n", number);
for(i=current_entry;i<number+current_entry;++i) {
if (i<used_entries) tmp_vlc_bits[i]=current_length;
}
for(i=current_entry;i<number+current_entry;++i)
if (i<used_entries)
tmp_vlc_bits[i]=current_length;
current_entry+=number;
}
@ -356,18 +355,16 @@ static int vorbis_parse_setup_hdr_codebooks(vorbis_context *vc) {
for(k=0;k<dim;++k) {
uint_fast32_t multiplicand_offset = lookup_offset % codebook_lookup_values;
codebook_setup->codevectors[j*dim+k]=codebook_multiplicands[multiplicand_offset]*codebook_delta_value+codebook_minimum_value+last;
if (codebook_sequence_p) {
if (codebook_sequence_p)
last=codebook_setup->codevectors[j*dim+k];
}
lookup_offset/=codebook_lookup_values;
}
tmp_vlc_bits[j]=tmp_vlc_bits[i];
#ifdef V_DEBUG
av_log(vc->avccontext, AV_LOG_INFO, "real lookup offset %d, vector: ", j);
for(k=0;k<dim;++k) {
for(k=0;k<dim;++k)
av_log(vc->avccontext, AV_LOG_INFO, " %f ", codebook_setup->codevectors[j*dim+k]);
}
av_log(vc->avccontext, AV_LOG_INFO, "\n");
#endif
@ -379,8 +376,7 @@ static int vorbis_parse_setup_hdr_codebooks(vorbis_context *vc) {
goto error;
}
entries=used_entries;
}
else if (codebook_setup->lookup_type>=2) {
} else if (codebook_setup->lookup_type>=2) {
av_log(vc->avccontext, AV_LOG_ERROR, "Codebook lookup type not supported. \n");
goto error;
}
@ -392,10 +388,13 @@ static int vorbis_parse_setup_hdr_codebooks(vorbis_context *vc) {
}
codebook_setup->maxdepth=0;
for(t=0;t<entries;++t)
if (tmp_vlc_bits[t]>=codebook_setup->maxdepth) codebook_setup->maxdepth=tmp_vlc_bits[t];
if (tmp_vlc_bits[t]>=codebook_setup->maxdepth)
codebook_setup->maxdepth=tmp_vlc_bits[t];
if(codebook_setup->maxdepth > 3*V_NB_BITS) codebook_setup->nb_bits=V_NB_BITS2;
else codebook_setup->nb_bits=V_NB_BITS;
if(codebook_setup->maxdepth > 3*V_NB_BITS)
codebook_setup->nb_bits=V_NB_BITS2;
else
codebook_setup->nb_bits=V_NB_BITS;
codebook_setup->maxdepth=(codebook_setup->maxdepth+codebook_setup->nb_bits-1)/codebook_setup->nb_bits;
@ -418,7 +417,8 @@ error:
// Process time domain transforms part (unused in Vorbis I)
static int vorbis_parse_setup_hdr_tdtransforms(vorbis_context *vc) {
static int vorbis_parse_setup_hdr_tdtransforms(vorbis_context *vc)
{
GetBitContext *gb=&vc->gb;
uint_fast8_t i;
uint_fast8_t vorbis_time_count=get_bits(gb, 6)+1;
@ -443,7 +443,8 @@ static uint_fast8_t vorbis_floor0_decode(vorbis_context *vc,
static void create_map( vorbis_context * vc, uint_fast8_t floor_number );
static uint_fast8_t vorbis_floor1_decode(vorbis_context *vc,
vorbis_floor_data *vfu, float *vec);
static int vorbis_parse_setup_hdr_floors(vorbis_context *vc) {
static int vorbis_parse_setup_hdr_floors(vorbis_context *vc)
{
GetBitContext *gb=&vc->gb;
uint_fast16_t i,j,k;
@ -471,7 +472,8 @@ static int vorbis_parse_setup_hdr_floors(vorbis_context *vc) {
for(j=0;j<floor_setup->data.t1.partitions;++j) {
floor_setup->data.t1.partition_class[j]=get_bits(gb, 4);
if (floor_setup->data.t1.partition_class[j]>maximum_class) maximum_class=floor_setup->data.t1.partition_class[j];
if (floor_setup->data.t1.partition_class[j]>maximum_class)
maximum_class=floor_setup->data.t1.partition_class[j];
AV_DEBUG(" %d. floor %d partition class %d \n", i, j, floor_setup->data.t1.partition_class[j]);
@ -513,9 +515,8 @@ static int vorbis_parse_setup_hdr_floors(vorbis_context *vc) {
floor_setup->data.t1.multiplier=get_bits(gb, 2)+1;
floor_setup->data.t1.x_list_dim=2;
for(j=0;j<floor_setup->data.t1.partitions;++j) {
for(j=0;j<floor_setup->data.t1.partitions;++j)
floor_setup->data.t1.x_list_dim+=floor_setup->data.t1.class_dimensions[floor_setup->data.t1.partition_class[j]];
}
floor_setup->data.t1.list=av_mallocz(floor_setup->data.t1.x_list_dim * sizeof(vorbis_floor1_entry));
@ -534,8 +535,7 @@ static int vorbis_parse_setup_hdr_floors(vorbis_context *vc) {
// Precalculate order of x coordinates - needed for decode
ff_vorbis_ready_floor1_list(floor_setup->data.t1.list, floor_setup->data.t1.x_list_dim);
}
else if(floor_setup->floor_type==0) {
} else if(floor_setup->floor_type==0) {
uint_fast8_t max_codebook_dim=0;
floor_setup->decode=vorbis_floor0_decode;
@ -557,7 +557,8 @@ static int vorbis_parse_setup_hdr_floors(vorbis_context *vc) {
/* allocate mem for booklist */
floor_setup->data.t0.book_list=
av_malloc(floor_setup->data.t0.num_books);
if(!floor_setup->data.t0.book_list) { return -1; }
if(!floor_setup->data.t0.book_list)
return -1;
/* read book indexes */
{
int idx;
@ -581,7 +582,8 @@ static int vorbis_parse_setup_hdr_floors(vorbis_context *vc) {
floor_setup->data.t0.lsp=
av_malloc((floor_setup->data.t0.order+1 + max_codebook_dim)
* sizeof(float));
if(!floor_setup->data.t0.lsp) { return -1; }
if(!floor_setup->data.t0.lsp)
return -1;
}
#ifdef V_DEBUG /* debug output parsed headers */
@ -606,8 +608,7 @@ static int vorbis_parse_setup_hdr_floors(vorbis_context *vc) {
}
}
#endif
}
else {
} else {
av_log(vc->avccontext, AV_LOG_ERROR, "Invalid floor type!\n");
return -1;
}
@ -617,7 +618,8 @@ static int vorbis_parse_setup_hdr_floors(vorbis_context *vc) {
// Process residues part
static int vorbis_parse_setup_hdr_residues(vorbis_context *vc){
static int vorbis_parse_setup_hdr_residues(vorbis_context *vc)
{
GetBitContext *gb=&vc->gb;
uint_fast8_t i, j, k;
@ -660,9 +662,8 @@ static int vorbis_parse_setup_hdr_residues(vorbis_context *vc){
for(j=0;j<res_setup->classifications;++j) {
high_bits=0;
low_bits=get_bits(gb, 3);
if (get_bits1(gb)) {
if (get_bits1(gb))
high_bits=get_bits(gb, 5);
}
cascade[j]=(high_bits<<3)+low_bits;
AV_DEBUG(" %d class casscade depth: %d \n", j, ilog(cascade[j]));
@ -681,9 +682,8 @@ static int vorbis_parse_setup_hdr_residues(vorbis_context *vc){
AV_DEBUG(" %d class casscade depth %d book: %d \n", j, k, res_setup->books[j][k]);
if (k>res_setup->maxpass) {
if (k>res_setup->maxpass)
res_setup->maxpass=k;
}
} else {
res_setup->books[j][k]=-1;
}
@ -695,7 +695,8 @@ static int vorbis_parse_setup_hdr_residues(vorbis_context *vc){
// Process mappings part
static int vorbis_parse_setup_hdr_mappings(vorbis_context *vc) {
static int vorbis_parse_setup_hdr_mappings(vorbis_context *vc)
{
GetBitContext *gb=&vc->gb;
uint_fast8_t i, j;
@ -784,8 +785,7 @@ static void create_map( vorbis_context * vc, uint_fast8_t floor_number )
int_fast32_t * map;
int_fast32_t n; //TODO: could theoretically be smaller?
for (blockflag=0;blockflag<2;++blockflag)
{
for (blockflag=0;blockflag<2;++blockflag) {
n=vc->blocksize[blockflag]/2;
floors[floor_number].data.t0.map[blockflag]=
av_malloc((n+1) * sizeof(int_fast32_t)); // n+sentinel
@ -797,10 +797,9 @@ static void create_map( vorbis_context * vc, uint_fast8_t floor_number )
map[idx]=floor( BARK((vf->rate*idx)/(2.0f*n)) *
((vf->bark_map_size)/
BARK(vf->rate/2.0f )) );
if (vf->bark_map_size-1 < map[idx]) {
if (vf->bark_map_size-1 < map[idx])
map[idx]=vf->bark_map_size-1;
}
}
map[n]=-1;
vf->map_size[blockflag]=n;
}
@ -813,7 +812,8 @@ static void create_map( vorbis_context * vc, uint_fast8_t floor_number )
# endif
}
static int vorbis_parse_setup_hdr_modes(vorbis_context *vc) {
static int vorbis_parse_setup_hdr_modes(vorbis_context *vc)
{
GetBitContext *gb=&vc->gb;
uint_fast8_t i;
@ -841,7 +841,8 @@ static int vorbis_parse_setup_hdr_modes(vorbis_context *vc) {
// Process the whole setup header using the functions above
static int vorbis_parse_setup_hdr(vorbis_context *vc) {
static int vorbis_parse_setup_hdr(vorbis_context *vc)
{
GetBitContext *gb=&vc->gb;
if ((get_bits(gb, 8)!='v') || (get_bits(gb, 8)!='o') ||
@ -885,7 +886,8 @@ static int vorbis_parse_setup_hdr(vorbis_context *vc) {
// Process the identification header
static int vorbis_parse_id_hdr(vorbis_context *vc){
static int vorbis_parse_id_hdr(vorbis_context *vc)
{
GetBitContext *gb=&vc->gb;
uint_fast8_t bl0, bl1;
@ -956,7 +958,8 @@ static int vorbis_parse_id_hdr(vorbis_context *vc){
// Process the extradata using the functions above (identification header, setup header)
static av_cold int vorbis_decode_init(AVCodecContext *avccontext) {
static av_cold int vorbis_decode_init(AVCodecContext *avccontext)
{
vorbis_context *vc = avccontext->priv_data ;
uint8_t *headers = avccontext->extradata;
int headers_len=avccontext->extradata_size;
@ -1024,7 +1027,8 @@ static av_cold int vorbis_decode_init(AVCodecContext *avccontext) {
// Read and decode floor
static uint_fast8_t vorbis_floor0_decode(vorbis_context *vc,
vorbis_floor_data *vfu, float *vec) {
vorbis_floor_data *vfu, float *vec)
{
vorbis_floor0 * vf=&vfu->t0;
float * lsp=vf->lsp;
uint_fast32_t amplitude;
@ -1061,9 +1065,8 @@ static uint_fast8_t vorbis_floor0_decode(vorbis_context *vc,
codebook.dimensions;
AV_DEBUG( "floor0 dec: vector offset: %d\n", vec_off );
/* copy each vector component and add last to it */
for (idx=0; idx<codebook.dimensions; ++idx) {
for (idx=0; idx<codebook.dimensions; ++idx)
lsp[lsp_len+idx]=codebook.codevectors[vec_off+idx]+last;
}
last=lsp[lsp_len+idx-1]; /* set last to last vector component */
lsp_len += codebook.dimensions;
@ -1083,7 +1086,8 @@ static uint_fast8_t vorbis_floor0_decode(vorbis_context *vc,
int order=vf->order;
float wstep=M_PI/vf->bark_map_size;
for(i=0;i<order;i++) { lsp[i]=2.0f*cos(lsp[i]); }
for(i=0;i<order;i++)
lsp[i]=2.0f*cos(lsp[i]);
AV_DEBUG("floor0 synth: map_size=%d; m=%d; wstep=%f\n",
vf->map_size, order, wstep);
@ -1103,8 +1107,7 @@ static uint_fast8_t vorbis_floor0_decode(vorbis_context *vc,
if(j==order) { // even order
p *= p*(2.0f-two_cos_w);
q *= q*(2.0f+two_cos_w);
}
else { // odd order
} else { // odd order
q *= two_cos_w-lsp[j]; // one more time for q
/* final step and square */
@ -1122,11 +1125,12 @@ static uint_fast8_t vorbis_floor0_decode(vorbis_context *vc,
}
/* fill vector */
do { vec[i]=q; ++i; }while(vf->map[blockflag][i]==iter_cond);
do {
vec[i]=q; ++i;
} while (vf->map[blockflag][i]==iter_cond);
}
}
}
else {
} else {
/* this channel is unused */
return 1;
}
@ -1136,7 +1140,9 @@ static uint_fast8_t vorbis_floor0_decode(vorbis_context *vc,
return 0;
}
static uint_fast8_t vorbis_floor1_decode(vorbis_context *vc, vorbis_floor_data *vfu, float *vec) {
static uint_fast8_t vorbis_floor1_decode(vorbis_context *vc,
vorbis_floor_data *vfu, float *vec)
{
vorbis_floor1 * vf=&vfu->t1;
GetBitContext *gb=&vc->gb;
uint_fast16_t range_v[4]={ 256, 128, 86, 64 };
@ -1175,10 +1181,9 @@ static uint_fast8_t vorbis_floor1_decode(vorbis_context *vc, vorbis_floor_data *
AV_DEBUG("Cbits %d \n", cbits);
if (cbits) { // this reads all subclasses for this partition's class
if (cbits) // this reads all subclasses for this partition's class
cval=get_vlc2(gb, vc->codebooks[vf->class_masterbook[class_]].vlc.table,
vc->codebooks[vf->class_masterbook[class_]].nb_bits, 3);
}
for(j=0;j<cdim;++j) {
book=vf->subclass_books[class_][cval & csub];
@ -1267,7 +1272,14 @@ static uint_fast8_t vorbis_floor1_decode(vorbis_context *vc, vorbis_floor_data *
// Read and decode residue
static av_always_inline int vorbis_residue_decode_internal(vorbis_context *vc, vorbis_residue *vr, uint_fast8_t ch, uint_fast8_t *do_not_decode, float *vec, uint_fast16_t vlen, int vr_type) {
static av_always_inline int vorbis_residue_decode_internal(vorbis_context *vc,
vorbis_residue *vr,
uint_fast8_t ch,
uint_fast8_t *do_not_decode,
float *vec,
uint_fast16_t
vlen, int vr_type)
{
GetBitContext *gb=&vc->gb;
uint_fast8_t c_p_c=vc->codebooks[vr->classbook].dimensions;
uint_fast16_t n_to_read=vr->end-vr->begin;
@ -1279,10 +1291,10 @@ static av_always_inline int vorbis_residue_decode_internal(vorbis_context *vc, v
uint_fast16_t k;
if (vr_type==2) {
for(j=1;j<ch;++j) {
for(j=1;j<ch;++j)
do_not_decode[0]&=do_not_decode[j]; // FIXME - clobbering input
}
if (do_not_decode[0]) return 0;
if (do_not_decode[0])
return 0;
ch_used=1;
} else {
ch_used=ch;
@ -1311,9 +1323,8 @@ static av_always_inline int vorbis_residue_decode_internal(vorbis_context *vc, v
uint_fast32_t temp2;
temp2=(((uint_fast64_t)temp) * inverse_class)>>32;
if (partition_count+c_p_c-1-i < ptns_to_read) {
if (partition_count+c_p_c-1-i < ptns_to_read)
classifs[j_times_ptns_to_read+partition_count+c_p_c-1-i]=temp-temp2*vr->classifications;
}
temp=temp2;
}
}
@ -1340,12 +1351,10 @@ static av_always_inline int vorbis_residue_decode_internal(vorbis_context *vc, v
voffs=voffset+j*vlen;
for(k=0;k<step;++k) {
coffs=get_vlc2(gb, codebook.vlc.table, codebook.nb_bits, 3) * dim;
for(l=0;l<dim;++l) {
for(l=0;l<dim;++l)
vec[voffs+k+l*step]+=codebook.codevectors[coffs+l]; // FPMATH
}
}
}
else if (vr_type==1) {
} else if (vr_type==1) {
voffs=voffset+j*vlen;
for(k=0;k<step;++k) {
coffs=get_vlc2(gb, codebook.vlc.table, codebook.nb_bits, 3) * dim;
@ -1355,8 +1364,7 @@ static av_always_inline int vorbis_residue_decode_internal(vorbis_context *vc, v
AV_DEBUG(" pass %d offs: %d curr: %f change: %f cv offs.: %d \n", pass, voffs, vec[voffs], codebook.codevectors[coffs+l], coffs);
}
}
}
else if (vr_type==2 && ch==2 && (voffset&1)==0 && (dim&1)==0) { // most frequent case optimized
} else if (vr_type==2 && ch==2 && (voffset&1)==0 && (dim&1)==0) { // most frequent case optimized
voffs=voffset>>1;
if(dim==2) {
@ -1384,8 +1392,7 @@ static av_always_inline int vorbis_residue_decode_internal(vorbis_context *vc, v
}
}
}
else if (vr_type==2) {
} else if (vr_type==2) {
voffs=voffset;
for(k=0;k<step;++k) {
@ -1409,7 +1416,10 @@ static av_always_inline int vorbis_residue_decode_internal(vorbis_context *vc, v
return 0;
}
static inline int vorbis_residue_decode(vorbis_context *vc, vorbis_residue *vr, uint_fast8_t ch, uint_fast8_t *do_not_decode, float *vec, uint_fast16_t vlen)
static inline int vorbis_residue_decode(vorbis_context *vc, vorbis_residue *vr,
uint_fast8_t ch,
uint_fast8_t *do_not_decode,
float *vec, uint_fast16_t vlen)
{
if (vr->type==2)
return vorbis_residue_decode_internal(vc, vr, ch, do_not_decode, vec, vlen, 2);
@ -1426,8 +1436,7 @@ static inline int vorbis_residue_decode(vorbis_context *vc, vorbis_residue *vr,
void vorbis_inverse_coupling(float *mag, float *ang, int blocksize)
{
int i;
for(i=0; i<blocksize; i++)
{
for(i=0; i<blocksize; i++) {
if (mag[i]>0.0) {
if (ang[i]>0.0) {
ang[i]=mag[i]-ang[i];
@ -1448,7 +1457,8 @@ void vorbis_inverse_coupling(float *mag, float *ang, int blocksize)
}
}
static void copy_normalize(float *dst, float *src, int len, int exp_bias, float add_bias)
static void copy_normalize(float *dst, float *src, int len, int exp_bias,
float add_bias)
{
int i;
if(exp_bias) {
@ -1461,7 +1471,8 @@ static void copy_normalize(float *dst, float *src, int len, int exp_bias, float
// Decode the audio packet using the functions above
static int vorbis_parse_audio_packet(vorbis_context *vc) {
static int vorbis_parse_audio_packet(vorbis_context *vc)
{
GetBitContext *gb=&vc->gb;
uint_fast8_t previous_window=vc->previous_window;
@ -1500,9 +1511,8 @@ static int vorbis_parse_audio_packet(vorbis_context *vc) {
blockflag=vc->modes[mode_number].blockflag;
blocksize=vc->blocksize[blockflag];
if (blockflag) {
if (blockflag)
skip_bits(gb, 2); // previous_window, next_window
}
memset(ch_res_ptr, 0, sizeof(float)*vc->audio_channels*blocksize/2); //FIXME can this be removed ?
memset(ch_floor_ptr, 0, sizeof(float)*vc->audio_channels*blocksize/2); //FIXME can this be removed ?
@ -1616,9 +1626,8 @@ static int vorbis_decode_frame(AVCodecContext *avccontext,
int_fast16_t len;
if(!buf_size){
if(!buf_size)
return 0;
}
AV_DEBUG("packet length %d \n", buf_size);
@ -1649,7 +1658,8 @@ static int vorbis_decode_frame(AVCodecContext *avccontext,
// Close decoder
static av_cold int vorbis_decode_close(AVCodecContext *avccontext) {
static av_cold int vorbis_decode_close(AVCodecContext *avccontext)
{
vorbis_context *vc = avccontext->priv_data;
vorbis_free(vc);

153
libavcodec/vorbis_enc.c
View File

@ -125,20 +125,26 @@ typedef struct {
int64_t sample_count;
} vorbis_enc_context;
static inline void put_codeword(PutBitContext * pb, vorbis_enc_codebook * cb, int entry) {
static inline void put_codeword(PutBitContext * pb, vorbis_enc_codebook * cb,
int entry)
{
assert(entry >= 0);
assert(entry < cb->nentries);
assert(cb->lens[entry]);
put_bits(pb, cb->lens[entry], cb->codewords[entry]);
}
static int cb_lookup_vals(int lookup, int dimentions, int entries) {
if (lookup == 1) return ff_vorbis_nth_root(entries, dimentions);
else if (lookup == 2) return dimentions * entries;
static int cb_lookup_vals(int lookup, int dimentions, int entries)
{
if (lookup == 1)
return ff_vorbis_nth_root(entries, dimentions);
else if (lookup == 2)
return dimentions * entries;
return 0;
}
static void ready_codebook(vorbis_enc_codebook * cb) {
static void ready_codebook(vorbis_enc_codebook * cb)
{
int i;
ff_vorbis_len2vlc(cb->lens, cb->codewords, cb->nentries);
@ -171,7 +177,8 @@ static void ready_codebook(vorbis_enc_codebook * cb) {
}
}
static void ready_residue(vorbis_enc_residue * rc, vorbis_enc_context * venc) {
static void ready_residue(vorbis_enc_residue * rc, vorbis_enc_context * venc)
{
int i;
assert(rc->type == 2);
rc->maxes = av_mallocz(sizeof(float[2]) * rc->classifications);
@ -179,15 +186,18 @@ static void ready_residue(vorbis_enc_residue * rc, vorbis_enc_context * venc) {
int j;
vorbis_enc_codebook * cb;
for (j = 0; j < 8; j++)
if (rc->books[i][j] != -1) break;
if (j == 8) continue; // zero
if (rc->books[i][j] != -1)
break;
if (j == 8)
continue; // zero
cb = &venc->codebooks[rc->books[i][j]];
assert(cb->ndimentions >= 2);
assert(cb->lookup);
for (j = 0; j < cb->nentries; j++) {
float a;
if (!cb->lens[j]) continue;
if (!cb->lens[j])
continue;
a = fabs(cb->dimentions[j * cb->ndimentions]);
if (a > rc->maxes[i][0])
rc->maxes[i][0] = a;
@ -203,7 +213,9 @@ static void ready_residue(vorbis_enc_residue * rc, vorbis_enc_context * venc) {
}
}
static void create_vorbis_context(vorbis_enc_context * venc, AVCodecContext * avccontext) {
static void create_vorbis_context(vorbis_enc_context * venc,
AVCodecContext * avccontext)
{
vorbis_enc_floor * fc;
vorbis_enc_residue * rc;
vorbis_enc_mapping * mc;
@ -363,17 +375,22 @@ static void create_vorbis_context(vorbis_enc_context * venc, AVCodecContext * av
ff_mdct_init(&venc->mdct[1], venc->log2_blocksize[1], 0, 1.0);
}
static void put_float(PutBitContext * pb, float f) {
static void put_float(PutBitContext * pb, float f)
{
int exp, mant;
uint32_t res = 0;
mant = (int)ldexp(frexp(f, &exp), 20);
exp += 788 - 20;
if (mant < 0) { res |= (1 << 31); mant = -mant; }
if (mant < 0) {
res |= (1 << 31);
mant = -mant;
}
res |= mant | (exp << 21);
put_bits(pb, 32, res);
}
static void put_codebook_header(PutBitContext * pb, vorbis_enc_codebook * cb) {
static void put_codebook_header(PutBitContext * pb, vorbis_enc_codebook * cb)
{
int i;
int ordered = 0;
@ -382,7 +399,8 @@ static void put_codebook_header(PutBitContext * pb, vorbis_enc_codebook * cb) {
put_bits(pb, 24, cb->nentries);
for (i = 1; i < cb->nentries; i++)
if (cb->lens[i] < cb->lens[i-1]) break;
if (cb->lens[i] < cb->lens[i-1])
break;
if (i == cb->nentries)
ordered = 1;
@ -394,7 +412,8 @@ static void put_codebook_header(PutBitContext * pb, vorbis_enc_codebook * cb) {
while (i < cb->nentries) {
int j;
for (j = 0; j+i < cb->nentries; j++)
if (cb->lens[j+i] != len) break;
if (cb->lens[j+i] != len)
break;
put_bits(pb, ilog(cb->nentries - i), j);
i += j;
len++;
@ -402,14 +421,17 @@ static void put_codebook_header(PutBitContext * pb, vorbis_enc_codebook * cb) {
} else {
int sparse = 0;
for (i = 0; i < cb->nentries; i++)
if (!cb->lens[i]) break;
if (!cb->lens[i])
break;
if (i != cb->nentries)
sparse = 1;
put_bits(pb, 1, sparse);
for (i = 0; i < cb->nentries; i++) {
if (sparse) put_bits(pb, 1, !!cb->lens[i]);
if (cb->lens[i]) put_bits(pb, 5, cb->lens[i] - 1);
if (sparse)
put_bits(pb, 1, !!cb->lens[i]);
if (cb->lens[i])
put_bits(pb, 5, cb->lens[i] - 1);
}
}
@ -432,7 +454,8 @@ static void put_codebook_header(PutBitContext * pb, vorbis_enc_codebook * cb) {
}
}
static void put_floor_header(PutBitContext * pb, vorbis_enc_floor * fc) {
static void put_floor_header(PutBitContext * pb, vorbis_enc_floor * fc)
{
int i;
put_bits(pb, 16, 1); // type, only floor1 is supported
@ -464,7 +487,8 @@ static void put_floor_header(PutBitContext * pb, vorbis_enc_floor * fc) {
put_bits(pb, fc->rangebits, fc->list[i].x);
}
static void put_residue_header(PutBitContext * pb, vorbis_enc_residue * rc) {
static void put_residue_header(PutBitContext * pb, vorbis_enc_residue * rc)
{
int i;
put_bits(pb, 16, rc->type);
@ -495,7 +519,8 @@ static void put_residue_header(PutBitContext * pb, vorbis_enc_residue * rc) {
}
}
static int put_main_header(vorbis_enc_context * venc, uint8_t ** out) {
static int put_main_header(vorbis_enc_context * venc, uint8_t ** out)
{
int i;
PutBitContext pb;
uint8_t buffer[50000] = {0}, * p = buffer;
@ -624,7 +649,8 @@ static int put_main_header(vorbis_enc_context * venc, uint8_t ** out) {
return p - *out;
}
static float get_floor_average(vorbis_enc_floor * fc, float * coeffs, int i) {
static float get_floor_average(vorbis_enc_floor * fc, float * coeffs, int i)
{
int begin = fc->list[fc->list[FFMAX(i-1, 0)].sort].x;
int end = fc->list[fc->list[FFMIN(i+1, fc->values - 1)].sort].x;
int j;
@ -635,7 +661,9 @@ static float get_floor_average(vorbis_enc_floor * fc, float * coeffs, int i) {
return average / (end - begin);
}
static void floor_fit(vorbis_enc_context * venc, vorbis_enc_floor * fc, float * coeffs, uint_fast16_t * posts, int samples) {
static void floor_fit(vorbis_enc_context * venc, vorbis_enc_floor * fc,
float * coeffs, uint_fast16_t * posts, int samples)
{
int range = 255 / fc->multiplier + 1;
int i;
float tot_average = 0.;
@ -654,16 +682,21 @@ static void floor_fit(vorbis_enc_context * venc, vorbis_enc_floor * fc, float *
average *= pow(tot_average / average, 0.5) * pow(1.25, position/200.); // MAGIC!
for (j = 0; j < range - 1; j++)
if (ff_vorbis_floor1_inverse_db_table[j * fc->multiplier] > average) break;
if (ff_vorbis_floor1_inverse_db_table[j * fc->multiplier] > average)
break;
posts[fc->list[i].sort] = j;
}
}
static int render_point(int x0, int y0, int x1, int y1, int x) {
static int render_point(int x0, int y0, int x1, int y1, int x)
{
return y0 + (x - x0) * (y1 - y0) / (x1 - x0);
}
static void floor_encode(vorbis_enc_context * venc, vorbis_enc_floor * fc, PutBitContext * pb, uint_fast16_t * posts, float * floor, int samples) {
static void floor_encode(vorbis_enc_context * venc, vorbis_enc_floor * fc,
PutBitContext * pb, uint_fast16_t * posts,
float * floor, int samples)
{
int range = 255 / fc->multiplier + 1;
int coded[fc->values]; // first 2 values are unused
int i, counter;
@ -686,8 +719,10 @@ static void floor_encode(vorbis_enc_context * venc, vorbis_enc_floor * fc, PutBi
coded[i] = 0; // must be used later as flag!
continue;
} else {
if (!coded[fc->list[i].low ]) coded[fc->list[i].low ] = -1;
if (!coded[fc->list[i].high]) coded[fc->list[i].high] = -1;
if (!coded[fc->list[i].low ])
coded[fc->list[i].low ] = -1;
if (!coded[fc->list[i].high])
coded[fc->list[i].high] = -1;
}
if (posts[i] > predicted) {
if (posts[i] - predicted > room)
@ -716,7 +751,8 @@ static void floor_encode(vorbis_enc_context * venc, vorbis_enc_floor * fc, PutBi
if (c->books[l] != -1)
maxval = venc->codebooks[c->books[l]].nentries;
// coded could be -1, but this still works, cause that is 0
if (coded[counter + k] < maxval) break;
if (coded[counter + k] < maxval)
break;
}
assert(l != csub);
cval |= l << cshift;
@ -728,8 +764,10 @@ static void floor_encode(vorbis_enc_context * venc, vorbis_enc_floor * fc, PutBi
int book = c->books[cval & (csub-1)];
int entry = coded[counter++];
cval >>= c->subclass;
if (book == -1) continue;
if (entry == -1) entry = 0;
if (book == -1)
continue;
if (entry == -1)
entry = 0;
put_codeword(pb, &venc->codebooks[book], entry);
}
}
@ -737,14 +775,16 @@ static void floor_encode(vorbis_enc_context * venc, vorbis_enc_floor * fc, PutBi
ff_vorbis_floor1_render_list(fc->list, fc->values, posts, coded, fc->multiplier, floor, samples);
}
static float * put_vector(vorbis_enc_codebook * book, PutBitContext * pb, float * num) {
static float * put_vector(vorbis_enc_codebook * book, PutBitContext * pb, float * num)
{
int i, entry = -1;
float distance = FLT_MAX;
assert(book->dimentions);
for (i = 0; i < book->nentries; i++) {
float * vec = book->dimentions + i * book->ndimentions, d = book->pow2[i];
int j;
if (!book->lens[i]) continue;
if (!book->lens[i])
continue;
for (j = 0; j < book->ndimentions; j++)
d -= vec[j] * num[j];
if (distance > d) {
@ -756,7 +796,10 @@ static float * put_vector(vorbis_enc_codebook * book, PutBitContext * pb, float
return &book->dimentions[entry * book->ndimentions];
}
static void residue_encode(vorbis_enc_context * venc, vorbis_enc_residue * rc, PutBitContext * pb, float * coeffs, int samples, int real_ch) {
static void residue_encode(vorbis_enc_context * venc, vorbis_enc_residue * rc,
PutBitContext * pb, float * coeffs, int samples,
int real_ch)
{
int pass, i, j, p, k;
int psize = rc->partition_size;
int partitions = (rc->end - rc->begin) / psize;
@ -774,9 +817,9 @@ static void residue_encode(vorbis_enc_context * venc, vorbis_enc_residue * rc, P
max2 = FFMAX(max2, fabs(coeffs[samples + k / real_ch]));
}
for (i = 0; i < rc->classifications - 1; i++) {
if (max1 < rc->maxes[i][0] && max2 < rc->maxes[i][1]) break;
}
for (i = 0; i < rc->classifications - 1; i++)
if (max1 < rc->maxes[i][0] && max2 < rc->maxes[i][1])
break;
classes[0][p] = i;
}
@ -798,7 +841,8 @@ static void residue_encode(vorbis_enc_context * venc, vorbis_enc_residue * rc, P
int nbook = rc->books[classes[j][p]][pass];
vorbis_enc_codebook * book = &venc->codebooks[nbook];
float * buf = coeffs + samples*j + rc->begin + p*psize;
if (nbook == -1) continue;
if (nbook == -1)
continue;
assert(rc->type == 0 || rc->type == 2);
assert(!(psize % book->ndimentions));
@ -841,7 +885,9 @@ static void residue_encode(vorbis_enc_context * venc, vorbis_enc_residue * rc, P
}
}
static int apply_window_and_mdct(vorbis_enc_context * venc, signed short * audio, int samples) {
static int apply_window_and_mdct(vorbis_enc_context * venc,
signed short * audio, int samples)
{
int i, j, channel;
const float * win = venc->win[0];
int window_len = 1 << (venc->log2_blocksize[0] - 1);
@ -850,15 +896,12 @@ static int apply_window_and_mdct(vorbis_enc_context * venc, signed short * audio
if (!venc->have_saved && !samples) return 0;
if (venc->have_saved) {
for (channel = 0; channel < venc->channels; channel++) {
if (venc->have_saved)
for (channel = 0; channel < venc->channels; channel++)
memcpy(venc->samples + channel*window_len*2, venc->saved + channel*window_len, sizeof(float)*window_len);
}
} else {
for (channel = 0; channel < venc->channels; channel++) {
else
for (channel = 0; channel < venc->channels; channel++)
memset(venc->samples + channel*window_len*2, 0, sizeof(float)*window_len);
}
}
if (samples) {
for (channel = 0; channel < venc->channels; channel++) {
@ -868,14 +911,12 @@ static int apply_window_and_mdct(vorbis_enc_context * venc, signed short * audio
offset[i] = -audio[j] / 32768. / n * win[window_len - i - 1]; //FIXME find out why the sign has to be fliped
}
} else {
for (channel = 0; channel < venc->channels; channel++) {
for (channel = 0; channel < venc->channels; channel++)
memset(venc->samples + channel*window_len*2 + window_len, 0, sizeof(float)*window_len);
}
}
for (channel = 0; channel < venc->channels; channel++) {
for (channel = 0; channel < venc->channels; channel++)
ff_mdct_calc(&venc->mdct[0], venc->coeffs + channel*window_len, venc->samples + channel*window_len*2);
}
if (samples) {
for (channel = 0; channel < venc->channels; channel++) {
@ -928,7 +969,8 @@ static int vorbis_encode_frame(AVCodecContext * avccontext, unsigned char * pack
PutBitContext pb;
int i;
if (!apply_window_and_mdct(venc, audio, samples)) return 0;
if (!apply_window_and_mdct(venc, audio, samples))
return 0;
samples = 1 << (venc->log2_blocksize[0] - 1);
init_put_bits(&pb, packets, buf_size);
@ -951,9 +993,8 @@ static int vorbis_encode_frame(AVCodecContext * avccontext, unsigned char * pack
floor_encode(venc, fc, &pb, posts, &venc->floor[i * samples], samples);
}
for (i = 0; i < venc->channels * samples; i++) {
for (i = 0; i < venc->channels * samples; i++)
venc->coeffs[i] /= venc->floor[i];
}
for (i = 0; i < mapping->coupling_steps; i++) {
float * mag = venc->coeffs + mapping->magnitude[i] * samples;
@ -962,8 +1003,10 @@ static int vorbis_encode_frame(AVCodecContext * avccontext, unsigned char * pack
for (j = 0; j < samples; j++) {
float a = ang[j];
ang[j] -= mag[j];
if (mag[j] > 0) ang[j] = -ang[j];
if (ang[j] < 0) mag[j] = a;
if (mag[j] > 0)
ang[j] = -ang[j];
if (ang[j] < 0)
mag[j] = a;
}
}