/**
- * @file vorbis_dec.c
+ * @file libavcodec/vorbis_dec.c
* Vorbis I decoder
* @author Denes Balatoni ( dbalatoni programozo hu )
int_fast16_t subclass_books[16][8];
uint_fast8_t multiplier;
uint_fast16_t x_list_dim;
- floor1_entry_t * list;
+ vorbis_floor1_entry * list;
} t1;
} data;
} vorbis_floor;
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(floor1_entry_t));
+ floor_setup->data.t1.list=av_mallocz(floor_setup->data.t1.x_list_dim * sizeof(vorbis_floor1_entry));
rangebits=get_bits(gb, 4);
hdr_type=get_bits(gb, 8);
if (hdr_type!=5) {
av_log(avccontext, AV_LOG_ERROR, "Third header is not the setup header.\n");
+ vorbis_free(vc);
return -1;
}
if (vorbis_parse_setup_hdr(vc)) {
// Read and decode residue
-static 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 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;
uint_fast8_t i,j,l;
uint_fast16_t k;
- if (vr->type==2) {
+ if (vr_type==2) {
for(j=1;j<ch;++j) {
do_not_decode[0]&=do_not_decode[j]; // FIXME - clobbering input
}
: FASTDIV(vr->partition_size, dim);
vorbis_codebook codebook= vc->codebooks[vqbook];
- if (vr->type==0) {
+ if (vr_type==0) {
voffs=voffset+j*vlen;
for(k=0;k<step;++k) {
}
}
}
- 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;
}
}
}
- 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) {
}
}
- else if (vr->type==2) {
+ else if (vr_type==2) {
voffs=voffset;
for(k=0;k<step;++k) {
AV_DEBUG(" pass %d offs: %d curr: %f change: %f cv offs.: %d+%d \n", pass, voffset/ch+(voffs%ch)*vlen, vec[voffset/ch+(voffs%ch)*vlen], codebook.codevectors[coffs+l], coffs, l);
}
}
- } else {
- av_log(vc->avccontext, AV_LOG_ERROR, " Invalid residue type while residue decode?! \n");
- return 1;
}
}
}
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)
+{
+ if (vr->type==2)
+ return vorbis_residue_decode_internal(vc, vr, ch, do_not_decode, vec, vlen, 2);
+ else if (vr->type==1)
+ return vorbis_residue_decode_internal(vc, vr, ch, do_not_decode, vec, vlen, 1);
+ else if (vr->type==0)
+ return vorbis_residue_decode_internal(vc, vr, ch, do_not_decode, vec, vlen, 0);
+ else {
+ av_log(vc->avccontext, AV_LOG_ERROR, " Invalid residue type while residue decode?! \n");
+ return 1;
+ }
+}
+
void vorbis_inverse_coupling(float *mag, float *ang, int blocksize)
{
int i;
uint_fast8_t mode_number;
uint_fast8_t blockflag;
uint_fast16_t blocksize;
- int_fast32_t i,j,dir;
+ int_fast32_t i,j;
uint_fast8_t no_residue[vc->audio_channels];
uint_fast8_t do_not_decode[vc->audio_channels];
vorbis_mapping *mapping;
vc->dsp.vorbis_inverse_coupling(mag, ang, blocksize/2);
}
-// Dotproduct
+// Dotproduct, MDCT
- for(j=0, ch_floor_ptr=vc->channel_floors;j<vc->audio_channels;++j,ch_floor_ptr+=blocksize/2) {
+ for(j=vc->audio_channels-1;j>=0;j--) {
+ ch_floor_ptr=vc->channel_floors+j*blocksize/2;
ch_res_ptr=vc->channel_residues+res_chan[j]*blocksize/2;
vc->dsp.vector_fmul(ch_floor_ptr, ch_res_ptr, blocksize/2);
+ ff_imdct_half(&vc->mdct[blockflag], ch_res_ptr, ch_floor_ptr);
}
-// MDCT, overlap/add, save data for next overlapping FPMATH
+// Overlap/add, save data for next overlapping FPMATH
retlen = (blocksize + vc->blocksize[previous_window])/4;
- dir = retlen <= blocksize/2; // pick an order so that ret[] can reuse residues[] without stepping on any data we need
- for(j=dir?0:vc->audio_channels-1; (unsigned)j<vc->audio_channels; j+=dir*2-1) {
+ for(j=0;j<vc->audio_channels;j++) {
uint_fast16_t bs0=vc->blocksize[0];
uint_fast16_t bs1=vc->blocksize[1];
float *residue=vc->channel_residues+res_chan[j]*blocksize/2;
- float *floor=vc->channel_floors+j*blocksize/2;
float *saved=vc->saved+j*bs1/4;
- float *ret=vc->channel_residues+j*retlen;
- float *buf=floor;
+ float *ret=vc->channel_floors+j*retlen;
+ float *buf=residue;
const float *win=vc->win[blockflag&previous_window];
- vc->mdct[0].fft.imdct_half(&vc->mdct[blockflag], buf, floor, residue);
-
if(blockflag == previous_window) {
vc->dsp.vector_fmul_window(ret, saved, buf, win, fadd_bias, blocksize/4);
} else if(blockflag > previous_window) {
static int vorbis_decode_frame(AVCodecContext *avccontext,
void *data, int *data_size,
- const uint8_t *buf, int buf_size)
+ AVPacket *avpkt)
{
+ const uint8_t *buf = avpkt->data;
+ int buf_size = avpkt->size;
vorbis_context *vc = avccontext->priv_data ;
GetBitContext *gb = &(vc->gb);
const float *channel_ptrs[vc->audio_channels];
AV_DEBUG("parsed %d bytes %d bits, returned %d samples (*ch*bits) \n", get_bits_count(gb)/8, get_bits_count(gb)%8, len);
for(i=0; i<vc->audio_channels; i++)
- channel_ptrs[i] = vc->channel_residues+i*len;
+ channel_ptrs[i] = vc->channel_floors+i*len;
vc->dsp.float_to_int16_interleave(data, channel_ptrs, len, vc->audio_channels);
*data_size=len*2*vc->audio_channels;
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