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YOU DEATH IST KNoW ME NoW

CQTexperiment
Chris Moeller 2014-02-05 17:49:56 -08:00
parent a614cc17b9
commit 06b1058b47
9 changed files with 12878 additions and 4 deletions
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20
Frameworks/FFMPEG/FFMPEG.xcodeproj/project.pbxproj
View File

@ -311,6 +311,11 @@
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833E5FA318A31EC4006A85F9 /* twinvq.h in Headers */ = {isa = PBXBuildFile; fileRef = 833E5F9F18A31EC4006A85F9 /* twinvq.h */; };
833E5FA418A31EC4006A85F9 /* twinvqdec.c in Sources */ = {isa = PBXBuildFile; fileRef = 833E5FA018A31EC4006A85F9 /* twinvqdec.c */; };
8384904D1807898200E7332D /* apedec.c in Sources */ = {isa = PBXBuildFile; fileRef = 8384904C1807898200E7332D /* apedec.c */; };
8384904F1807898A00E7332D /* ape.c in Sources */ = {isa = PBXBuildFile; fileRef = 8384904E1807898A00E7332D /* ape.c */; };
8384905C1807AF0100E7332D /* ac3_parser.c in Sources */ = {isa = PBXBuildFile; fileRef = 838490501807AF0100E7332D /* ac3_parser.c */; };
@ -749,6 +754,11 @@
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833C37D418032E7000CBA602 /* jrevdct.c */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.c; path = jrevdct.c; sourceTree = "<group>"; };
833C37D618032EA500CBA602 /* idct_xvid.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = idct_xvid.h; sourceTree = "<group>"; };
833E5F9B18A31EB7006A85F9 /* vqf.c */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.c; path = vqf.c; sourceTree = "<group>"; };
833E5F9D18A31EC4006A85F9 /* twinvq_data.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = twinvq_data.h; sourceTree = "<group>"; };
833E5F9E18A31EC4006A85F9 /* twinvq.c */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.c; path = twinvq.c; sourceTree = "<group>"; };
833E5F9F18A31EC4006A85F9 /* twinvq.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = twinvq.h; sourceTree = "<group>"; };
833E5FA018A31EC4006A85F9 /* twinvqdec.c */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.c; path = twinvqdec.c; sourceTree = "<group>"; };
8384904C1807898200E7332D /* apedec.c */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.c; path = apedec.c; sourceTree = "<group>"; };
8384904E1807898A00E7332D /* ape.c */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.c; path = ape.c; sourceTree = "<group>"; };
838490501807AF0100E7332D /* ac3_parser.c */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.c; path = ac3_parser.c; sourceTree = "<group>"; };
@ -957,6 +967,10 @@
830F0B8E17FC4FB900042E8F /* libavcodec */ = {
isa = PBXGroup;
children = (
833E5F9D18A31EC4006A85F9 /* twinvq_data.h */,
833E5F9E18A31EC4006A85F9 /* twinvq.c */,
833E5F9F18A31EC4006A85F9 /* twinvq.h */,
833E5FA018A31EC4006A85F9 /* twinvqdec.c */,
830C4B56180C3434007674D6 /* amr.h */,
830C4B57180C3434007674D6 /* amrnbdata.h */,
830C4B58180C3434007674D6 /* amrnbdec.c */,
@ -1214,6 +1228,7 @@
830F0BAD17FC4FB900042E8F /* libavformat */ = {
isa = PBXGroup;
children = (
833E5F9B18A31EB7006A85F9 /* vqf.c */,
830C4B60180C343C007674D6 /* amr.c */,
838491141807D1D200E7332D /* tta.c */,
838491121807D06100E7332D /* spdifdec.c */,
@ -1553,6 +1568,7 @@
830F0D6517FC8A3300042E8F /* audiointerleave.h in Headers */,
833C37A318032A2F00CBA602 /* rawdec.h in Headers */,
838490DF1807C47E00E7332D /* g722.h in Headers */,
833E5FA318A31EC4006A85F9 /* twinvq.h in Headers */,
830F0D3D17FC846C00042E8F /* random_seed.h in Headers */,
830F0CCA17FC7F1E00042E8F /* bytestream.h in Headers */,
830F0D0317FC7F4000042E8F /* sinewin_tablegen.h in Headers */,
@ -1585,6 +1601,7 @@
830F0D5117FC880E00042E8F /* time_.h in Headers */,
830F0BD717FC4FB900042E8F /* get_bits.h in Headers */,
830F0C2417FC527400042E8F /* atomic.h in Headers */,
833E5FA118A31EC4006A85F9 /* twinvq_data.h in Headers */,
830F0C5D17FC7CEA00042E8F /* id3v1.h in Headers */,
838490631807AF0100E7332D /* ac3dec.h in Headers */,
838490C31807C37300E7332D /* atrac.h in Headers */,
@ -1868,6 +1885,7 @@
8393B7E318052BB000913C76 /* mpeg.c in Sources */,
838491111807CEF400E7332D /* sbrdsp_init.c in Sources */,
830F0D4017FC848D00042E8F /* sha.c in Sources */,
833E5FA218A31EC4006A85F9 /* twinvq.c in Sources */,
838490EF1807C57B00E7332D /* aac_adtstoasc_bsf.c in Sources */,
830F0BF417FC4FB900042E8F /* aviobuf.c in Sources */,
830F0C1117FC4FF400042E8F /* avfft.c in Sources */,
@ -1880,6 +1898,7 @@
830F0CDC17FC7F1E00042E8F /* faandct.c in Sources */,
830F0CE017FC7F1E00042E8F /* fmtconvert.c in Sources */,
830F0C6F17FC7DB100042E8F /* pixdesc.c in Sources */,
833E5F9C18A31EB7006A85F9 /* vqf.c in Sources */,
830F0C2917FC54F800042E8F /* asfdec.c in Sources */,
830F0C3B17FC554D00042E8F /* float_dsp.c in Sources */,
830F0BF817FC4FB900042E8F /* os_support.c in Sources */,
@ -1946,6 +1965,7 @@
830F0C8317FC7ED100042E8F /* rational.c in Sources */,
830F0CD517FC7F1E00042E8F /* dctref.c in Sources */,
8393B81118052DB700913C76 /* bitstream_filter.c in Sources */,
833E5FA418A31EC4006A85F9 /* twinvqdec.c in Sources */,
838490F11807C57B00E7332D /* aacadtsdec.c in Sources */,
830F0D2317FC82AB00042E8F /* fifo.c in Sources */,
830F0D3C17FC846C00042E8F /* random_seed.c in Sources */,

4
Frameworks/FFMPEG/ffmpeg-minimal/config.h
View File

@ -456,7 +456,7 @@
#define CONFIG_TRUESPEECH_DECODER 0
#define CONFIG_TTA_ENCODER 0
#define CONFIG_TTA_DECODER 1
#define CONFIG_TWINVQ_DECODER 0
#define CONFIG_TWINVQ_DECODER 1
#define CONFIG_VMDAUDIO_DECODER 0
#define CONFIG_VORBIS_ENCODER 0
#define CONFIG_VORBIS_DECODER 0
@ -1015,7 +1015,7 @@
#define CONFIG_VOC_MUXER 0
#define CONFIG_VOC_DEMUXER 0
#define CONFIG_VPLAYER_DEMUXER 0
#define CONFIG_VQF_DEMUXER 0
#define CONFIG_VQF_DEMUXER 1
#define CONFIG_W64_MUXER 0
#define CONFIG_W64_DEMUXER 0
#define CONFIG_WAV_MUXER 0

778
Frameworks/FFMPEG/ffmpeg-minimal/libavcodec/twinvq.c Normal file
View File

@ -0,0 +1,778 @@
/*
* TwinVQ decoder
* Copyright (c) 2009 Vitor Sessak
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <math.h>
#include <stdint.h>
#include "libavutil/channel_layout.h"
#include "libavutil/float_dsp.h"
#include "libavutil/internal.h"
#include "avcodec.h"
#include "fft.h"
#include "internal.h"
#include "lsp.h"
#include "sinewin.h"
#include "twinvq.h"
/**
* Evaluate a single LPC amplitude spectrum envelope coefficient from the line
* spectrum pairs.
*
* @param lsp a vector of the cosine of the LSP values
* @param cos_val cos(PI*i/N) where i is the index of the LPC amplitude
* @param order the order of the LSP (and the size of the *lsp buffer). Must
* be a multiple of four.
* @return the LPC value
*
* @todo reuse code from Vorbis decoder: vorbis_floor0_decode
*/
static float eval_lpc_spectrum(const float *lsp, float cos_val, int order)
{
int j;
float p = 0.5f;
float q = 0.5f;
float two_cos_w = 2.0f * cos_val;
for (j = 0; j + 1 < order; j += 2 * 2) {
// Unroll the loop once since order is a multiple of four
q *= lsp[j] - two_cos_w;
p *= lsp[j + 1] - two_cos_w;
q *= lsp[j + 2] - two_cos_w;
p *= lsp[j + 3] - two_cos_w;
}
p *= p * (2.0f - two_cos_w);
q *= q * (2.0f + two_cos_w);
return 0.5 / (p + q);
}
/**
* Evaluate the LPC amplitude spectrum envelope from the line spectrum pairs.
*/
static void eval_lpcenv(TwinVQContext *tctx, const float *cos_vals, float *lpc)
{
int i;
const TwinVQModeTab *mtab = tctx->mtab;
int size_s = mtab->size / mtab->fmode[TWINVQ_FT_SHORT].sub;
for (i = 0; i < size_s / 2; i++) {
float cos_i = tctx->cos_tabs[0][i];
lpc[i] = eval_lpc_spectrum(cos_vals, cos_i, mtab->n_lsp);
lpc[size_s - i - 1] = eval_lpc_spectrum(cos_vals, -cos_i, mtab->n_lsp);
}
}
static void interpolate(float *out, float v1, float v2, int size)
{
int i;
float step = (v1 - v2) / (size + 1);
for (i = 0; i < size; i++) {
v2 += step;
out[i] = v2;
}
}
static inline float get_cos(int idx, int part, const float *cos_tab, int size)
{
return part ? -cos_tab[size - idx - 1]
: cos_tab[idx];
}
/**
* Evaluate the LPC amplitude spectrum envelope from the line spectrum pairs.
* Probably for speed reasons, the coefficients are evaluated as
* siiiibiiiisiiiibiiiisiiiibiiiisiiiibiiiis ...
* where s is an evaluated value, i is a value interpolated from the others
* and b might be either calculated or interpolated, depending on an
* unexplained condition.
*
* @param step the size of a block "siiiibiiii"
* @param in the cosine of the LSP data
* @param part is 0 for 0...PI (positive cosine values) and 1 for PI...2PI
* (negative cosine values)
* @param size the size of the whole output
*/
static inline void eval_lpcenv_or_interp(TwinVQContext *tctx,
enum TwinVQFrameType ftype,
float *out, const float *in,
int size, int step, int part)
{
int i;
const TwinVQModeTab *mtab = tctx->mtab;
const float *cos_tab = tctx->cos_tabs[ftype];
// Fill the 's'
for (i = 0; i < size; i += step)
out[i] =
eval_lpc_spectrum(in,
get_cos(i, part, cos_tab, size),
mtab->n_lsp);
// Fill the 'iiiibiiii'
for (i = step; i <= size - 2 * step; i += step) {
if (out[i + step] + out[i - step] > 1.95 * out[i] ||
out[i + step] >= out[i - step]) {
interpolate(out + i - step + 1, out[i], out[i - step], step - 1);
} else {
out[i - step / 2] =
eval_lpc_spectrum(in,
get_cos(i - step / 2, part, cos_tab, size),
mtab->n_lsp);
interpolate(out + i - step + 1, out[i - step / 2],
out[i - step], step / 2 - 1);
interpolate(out + i - step / 2 + 1, out[i],
out[i - step / 2], step / 2 - 1);
}
}
interpolate(out + size - 2 * step + 1, out[size - step],
out[size - 2 * step], step - 1);
}
static void eval_lpcenv_2parts(TwinVQContext *tctx, enum TwinVQFrameType ftype,
const float *buf, float *lpc,
int size, int step)
{
eval_lpcenv_or_interp(tctx, ftype, lpc, buf, size / 2, step, 0);
eval_lpcenv_or_interp(tctx, ftype, lpc + size / 2, buf, size / 2,
2 * step, 1);
interpolate(lpc + size / 2 - step + 1, lpc[size / 2],
lpc[size / 2 - step], step);
twinvq_memset_float(lpc + size - 2 * step + 1, lpc[size - 2 * step],
2 * step - 1);
}
/**
* Inverse quantization. Read CB coefficients for cb1 and cb2 from the
* bitstream, sum the corresponding vectors and write the result to *out
* after permutation.
*/
static void dequant(TwinVQContext *tctx, const uint8_t *cb_bits, float *out,
enum TwinVQFrameType ftype,
const int16_t *cb0, const int16_t *cb1, int cb_len)
{
int pos = 0;
int i, j;
for (i = 0; i < tctx->n_div[ftype]; i++) {
int tmp0, tmp1;
int sign0 = 1;
int sign1 = 1;
const int16_t *tab0, *tab1;
int length = tctx->length[ftype][i >= tctx->length_change[ftype]];
int bitstream_second_part = (i >= tctx->bits_main_spec_change[ftype]);
int bits = tctx->bits_main_spec[0][ftype][bitstream_second_part];
tmp0 = *cb_bits++;
if (bits == 7) {
if (tmp0 & 0x40)
sign0 = -1;
tmp0 &= 0x3F;
}
bits = tctx->bits_main_spec[1][ftype][bitstream_second_part];
tmp1 = *cb_bits++;
if (bits == 7) {
if (tmp1 & 0x40)
sign1 = -1;
tmp1 &= 0x3F;
}
tab0 = cb0 + tmp0 * cb_len;
tab1 = cb1 + tmp1 * cb_len;
for (j = 0; j < length; j++)
out[tctx->permut[ftype][pos + j]] = sign0 * tab0[j] +
sign1 * tab1[j];
pos += length;
}
}
static void dec_gain(TwinVQContext *tctx,
enum TwinVQFrameType ftype, float *out)
{
const TwinVQModeTab *mtab = tctx->mtab;
const TwinVQFrameData *bits = &tctx->bits;
int i, j;
int sub = mtab->fmode[ftype].sub;
float step = TWINVQ_AMP_MAX / ((1 << TWINVQ_GAIN_BITS) - 1);
float sub_step = TWINVQ_SUB_AMP_MAX / ((1 << TWINVQ_SUB_GAIN_BITS) - 1);
if (ftype == TWINVQ_FT_LONG) {
for (i = 0; i < tctx->avctx->channels; i++)
out[i] = (1.0 / (1 << 13)) *
twinvq_mulawinv(step * 0.5 + step * bits->gain_bits[i],
TWINVQ_AMP_MAX, TWINVQ_MULAW_MU);
} else {
for (i = 0; i < tctx->avctx->channels; i++) {
float val = (1.0 / (1 << 23)) *
twinvq_mulawinv(step * 0.5 + step * bits->gain_bits[i],
TWINVQ_AMP_MAX, TWINVQ_MULAW_MU);
for (j = 0; j < sub; j++)
out[i * sub + j] =
val * twinvq_mulawinv(sub_step * 0.5 +
sub_step * bits->sub_gain_bits[i * sub + j],
TWINVQ_SUB_AMP_MAX, TWINVQ_MULAW_MU);
}
}
}
/**
* Rearrange the LSP coefficients so that they have a minimum distance of
* min_dist. This function does it exactly as described in section of 3.2.4
* of the G.729 specification (but interestingly is different from what the
* reference decoder actually does).
*/
static void rearrange_lsp(int order, float *lsp, float min_dist)
{
int i;
float min_dist2 = min_dist * 0.5;
for (i = 1; i < order; i++)
if (lsp[i] - lsp[i - 1] < min_dist) {
float avg = (lsp[i] + lsp[i - 1]) * 0.5;
lsp[i - 1] = avg - min_dist2;
lsp[i] = avg + min_dist2;
}
}
static void decode_lsp(TwinVQContext *tctx, int lpc_idx1, uint8_t *lpc_idx2,
int lpc_hist_idx, float *lsp, float *hist)
{
const TwinVQModeTab *mtab = tctx->mtab;
int i, j;
const float *cb = mtab->lspcodebook;
const float *cb2 = cb + (1 << mtab->lsp_bit1) * mtab->n_lsp;
const float *cb3 = cb2 + (1 << mtab->lsp_bit2) * mtab->n_lsp;
const int8_t funny_rounding[4] = {
-2,
mtab->lsp_split == 4 ? -2 : 1,
mtab->lsp_split == 4 ? -2 : 1,
0
};
j = 0;
for (i = 0; i < mtab->lsp_split; i++) {
int chunk_end = ((i + 1) * mtab->n_lsp + funny_rounding[i]) /
mtab->lsp_split;
for (; j < chunk_end; j++)
lsp[j] = cb[lpc_idx1 * mtab->n_lsp + j] +
cb2[lpc_idx2[i] * mtab->n_lsp + j];
}
rearrange_lsp(mtab->n_lsp, lsp, 0.0001);
for (i = 0; i < mtab->n_lsp; i++) {
float tmp1 = 1.0 - cb3[lpc_hist_idx * mtab->n_lsp + i];
float tmp2 = hist[i] * cb3[lpc_hist_idx * mtab->n_lsp + i];
hist[i] = lsp[i];
lsp[i] = lsp[i] * tmp1 + tmp2;
}
rearrange_lsp(mtab->n_lsp, lsp, 0.0001);
rearrange_lsp(mtab->n_lsp, lsp, 0.000095);
ff_sort_nearly_sorted_floats(lsp, mtab->n_lsp);
}
static void dec_lpc_spectrum_inv(TwinVQContext *tctx, float *lsp,
enum TwinVQFrameType ftype, float *lpc)
{
int i;
int size = tctx->mtab->size / tctx->mtab->fmode[ftype].sub;
for (i = 0; i < tctx->mtab->n_lsp; i++)
lsp[i] = 2 * cos(lsp[i]);
switch (ftype) {
case TWINVQ_FT_LONG:
eval_lpcenv_2parts(tctx, ftype, lsp, lpc, size, 8);
break;
case TWINVQ_FT_MEDIUM:
eval_lpcenv_2parts(tctx, ftype, lsp, lpc, size, 2);
break;
case TWINVQ_FT_SHORT:
eval_lpcenv(tctx, lsp, lpc);
break;
}
}
static const uint8_t wtype_to_wsize[] = { 0, 0, 2, 2, 2, 1, 0, 1, 1 };
static void imdct_and_window(TwinVQContext *tctx, enum TwinVQFrameType ftype,
int wtype, float *in, float *prev, int ch)
{
FFTContext *mdct = &tctx->mdct_ctx[ftype];
const TwinVQModeTab *mtab = tctx->mtab;
int bsize = mtab->size / mtab->fmode[ftype].sub;
int size = mtab->size;
float *buf1 = tctx->tmp_buf;
int j, first_wsize, wsize; // Window size
float *out = tctx->curr_frame + 2 * ch * mtab->size;
float *out2 = out;
float *prev_buf;
int types_sizes[] = {
mtab->size / mtab->fmode[TWINVQ_FT_LONG].sub,
mtab->size / mtab->fmode[TWINVQ_FT_MEDIUM].sub,
mtab->size / (mtab->fmode[TWINVQ_FT_SHORT].sub * 2),
};
wsize = types_sizes[wtype_to_wsize[wtype]];
first_wsize = wsize;
prev_buf = prev + (size - bsize) / 2;
for (j = 0; j < mtab->fmode[ftype].sub; j++) {
int sub_wtype = ftype == TWINVQ_FT_MEDIUM ? 8 : wtype;
if (!j && wtype == 4)
sub_wtype = 4;
else if (j == mtab->fmode[ftype].sub - 1 && wtype == 7)
sub_wtype = 7;
wsize = types_sizes[wtype_to_wsize[sub_wtype]];
mdct->imdct_half(mdct, buf1 + bsize * j, in + bsize * j);
tctx->fdsp.vector_fmul_window(out2, prev_buf + (bsize - wsize) / 2,
buf1 + bsize * j,
ff_sine_windows[av_log2(wsize)],
wsize / 2);
out2 += wsize;
memcpy(out2, buf1 + bsize * j + wsize / 2,
(bsize - wsize / 2) * sizeof(float));
out2 += ftype == TWINVQ_FT_MEDIUM ? (bsize - wsize) / 2 : bsize - wsize;
prev_buf = buf1 + bsize * j + bsize / 2;
}
tctx->last_block_pos[ch] = (size + first_wsize) / 2;
}
static void imdct_output(TwinVQContext *tctx, enum TwinVQFrameType ftype,
int wtype, float **out)
{
const TwinVQModeTab *mtab = tctx->mtab;
float *prev_buf = tctx->prev_frame + tctx->last_block_pos[0];
int size1, size2, i;
for (i = 0; i < tctx->avctx->channels; i++)
imdct_and_window(tctx, ftype, wtype,
tctx->spectrum + i * mtab->size,
prev_buf + 2 * i * mtab->size,
i);
if (!out)
return;
size2 = tctx->last_block_pos[0];
size1 = mtab->size - size2;
memcpy(&out[0][0], prev_buf, size1 * sizeof(out[0][0]));
memcpy(&out[0][size1], tctx->curr_frame, size2 * sizeof(out[0][0]));
if (tctx->avctx->channels == 2) {
memcpy(&out[1][0], &prev_buf[2 * mtab->size],
size1 * sizeof(out[1][0]));
memcpy(&out[1][size1], &tctx->curr_frame[2 * mtab->size],
size2 * sizeof(out[1][0]));
tctx->fdsp.butterflies_float(out[0], out[1], mtab->size);
}
}
static void read_and_decode_spectrum(TwinVQContext *tctx, float *out,
enum TwinVQFrameType ftype)
{
const TwinVQModeTab *mtab = tctx->mtab;
TwinVQFrameData *bits = &tctx->bits;
int channels = tctx->avctx->channels;
int sub = mtab->fmode[ftype].sub;
int block_size = mtab->size / sub;
float gain[TWINVQ_CHANNELS_MAX * TWINVQ_SUBBLOCKS_MAX];
float ppc_shape[TWINVQ_PPC_SHAPE_LEN_MAX * TWINVQ_CHANNELS_MAX * 4];
int i, j;
dequant(tctx, bits->main_coeffs, out, ftype,
mtab->fmode[ftype].cb0, mtab->fmode[ftype].cb1,
mtab->fmode[ftype].cb_len_read);
dec_gain(tctx, ftype, gain);
if (ftype == TWINVQ_FT_LONG) {
int cb_len_p = (tctx->n_div[3] + mtab->ppc_shape_len * channels - 1) /
tctx->n_div[3];
dequant(tctx, bits->ppc_coeffs, ppc_shape,
TWINVQ_FT_PPC, mtab->ppc_shape_cb,
mtab->ppc_shape_cb + cb_len_p * TWINVQ_PPC_SHAPE_CB_SIZE,
cb_len_p);
}
for (i = 0; i < channels; i++) {
float *chunk = out + mtab->size * i;
float lsp[TWINVQ_LSP_COEFS_MAX];
for (j = 0; j < sub; j++) {
tctx->dec_bark_env(tctx, bits->bark1[i][j],
bits->bark_use_hist[i][j], i,
tctx->tmp_buf, gain[sub * i + j], ftype);
tctx->fdsp.vector_fmul(chunk + block_size * j,
chunk + block_size * j,
tctx->tmp_buf, block_size);
}
if (ftype == TWINVQ_FT_LONG)
tctx->decode_ppc(tctx, bits->p_coef[i], bits->g_coef[i],
ppc_shape + i * mtab->ppc_shape_len, chunk);
decode_lsp(tctx, bits->lpc_idx1[i], bits->lpc_idx2[i],
bits->lpc_hist_idx[i], lsp, tctx->lsp_hist[i]);
dec_lpc_spectrum_inv(tctx, lsp, ftype, tctx->tmp_buf);
for (j = 0; j < mtab->fmode[ftype].sub; j++) {
tctx->fdsp.vector_fmul(chunk, chunk, tctx->tmp_buf, block_size);
chunk += block_size;
}
}
}
const enum TwinVQFrameType ff_twinvq_wtype_to_ftype_table[] = {
TWINVQ_FT_LONG, TWINVQ_FT_LONG, TWINVQ_FT_SHORT, TWINVQ_FT_LONG,
TWINVQ_FT_MEDIUM, TWINVQ_FT_LONG, TWINVQ_FT_LONG, TWINVQ_FT_MEDIUM,
TWINVQ_FT_MEDIUM
};
int ff_twinvq_decode_frame(AVCodecContext *avctx, void *data,
int *got_frame_ptr, AVPacket *avpkt)
{
AVFrame *frame = data;
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
TwinVQContext *tctx = avctx->priv_data;
const TwinVQModeTab *mtab = tctx->mtab;
float **out = NULL;
int ret;
/* get output buffer */
if (tctx->discarded_packets >= 2) {
frame->nb_samples = mtab->size;
if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
return ret;
out = (float **)frame->extended_data;
}
if (buf_size < avctx->block_align) {
av_log(avctx, AV_LOG_ERROR,
"Frame too small (%d bytes). Truncated file?\n", buf_size);
return AVERROR(EINVAL);
}
if ((ret = tctx->read_bitstream(avctx, tctx, buf, buf_size)) < 0)
return ret;
read_and_decode_spectrum(tctx, tctx->spectrum, tctx->bits.ftype);
imdct_output(tctx, tctx->bits.ftype, tctx->bits.window_type, out);
FFSWAP(float *, tctx->curr_frame, tctx->prev_frame);
if (tctx->discarded_packets < 2) {
tctx->discarded_packets++;
*got_frame_ptr = 0;
return buf_size;
}
*got_frame_ptr = 1;
return avctx->block_align;
}
/**
* Init IMDCT and windowing tables
*/
static av_cold int init_mdct_win(TwinVQContext *tctx)
{
int i, j, ret;
const TwinVQModeTab *mtab = tctx->mtab;
int size_s = mtab->size / mtab->fmode[TWINVQ_FT_SHORT].sub;
int size_m = mtab->size / mtab->fmode[TWINVQ_FT_MEDIUM].sub;
int channels = tctx->avctx->channels;
float norm = channels == 1 ? 2.0 : 1.0;
for (i = 0; i < 3; i++) {
int bsize = tctx->mtab->size / tctx->mtab->fmode[i].sub;
if ((ret = ff_mdct_init(&tctx->mdct_ctx[i], av_log2(bsize) + 1, 1,
-sqrt(norm / bsize) / (1 << 15))))
return ret;
}
FF_ALLOC_OR_GOTO(tctx->avctx, tctx->tmp_buf,
mtab->size * sizeof(*tctx->tmp_buf), alloc_fail);
FF_ALLOC_OR_GOTO(tctx->avctx, tctx->spectrum,
2 * mtab->size * channels * sizeof(*tctx->spectrum),
alloc_fail);
FF_ALLOC_OR_GOTO(tctx->avctx, tctx->curr_frame,
2 * mtab->size * channels * sizeof(*tctx->curr_frame),
alloc_fail);
FF_ALLOC_OR_GOTO(tctx->avctx, tctx->prev_frame,
2 * mtab->size * channels * sizeof(*tctx->prev_frame),
alloc_fail);
for (i = 0; i < 3; i++) {
int m = 4 * mtab->size / mtab->fmode[i].sub;
double freq = 2 * M_PI / m;
FF_ALLOC_OR_GOTO(tctx->avctx, tctx->cos_tabs[i],
(m / 4) * sizeof(*tctx->cos_tabs[i]), alloc_fail);
for (j = 0; j <= m / 8; j++)
tctx->cos_tabs[i][j] = cos((2 * j + 1) * freq);
for (j = 1; j < m / 8; j++)
tctx->cos_tabs[i][m / 4 - j] = tctx->cos_tabs[i][j];
}
ff_init_ff_sine_windows(av_log2(size_m));
ff_init_ff_sine_windows(av_log2(size_s / 2));
ff_init_ff_sine_windows(av_log2(mtab->size));
return 0;
alloc_fail:
return AVERROR(ENOMEM);
}
/**
* Interpret the data as if it were a num_blocks x line_len[0] matrix and for
* each line do a cyclic permutation, i.e.
* abcdefghijklm -> defghijklmabc
* where the amount to be shifted is evaluated depending on the column.
*/
static void permutate_in_line(int16_t *tab, int num_vect, int num_blocks,
int block_size,
const uint8_t line_len[2], int length_div,
enum TwinVQFrameType ftype)
{
int i, j;
for (i = 0; i < line_len[0]; i++) {
int shift;
if (num_blocks == 1 ||
(ftype == TWINVQ_FT_LONG && num_vect % num_blocks) ||
(ftype != TWINVQ_FT_LONG && num_vect & 1) ||
i == line_len[1]) {
shift = 0;
} else if (ftype == TWINVQ_FT_LONG) {
shift = i;
} else
shift = i * i;
for (j = 0; j < num_vect && (j + num_vect * i < block_size * num_blocks); j++)
tab[i * num_vect + j] = i * num_vect + (j + shift) % num_vect;
}
}
/**
* Interpret the input data as in the following table:
*
* @verbatim
*
* abcdefgh
* ijklmnop
* qrstuvw
* x123456
*
* @endverbatim
*
* and transpose it, giving the output
* aiqxbjr1cks2dlt3emu4fvn5gow6hp
*/
static void transpose_perm(int16_t *out, int16_t *in, int num_vect,
const uint8_t line_len[2], int length_div)
{
int i, j;
int cont = 0;
for (i = 0; i < num_vect; i++)
for (j = 0; j < line_len[i >= length_div]; j++)
out[cont++] = in[j * num_vect + i];
}
static void linear_perm(int16_t *out, int16_t *in, int n_blocks, int size)
{
int block_size = size / n_blocks;
int i;
for (i = 0; i < size; i++)
out[i] = block_size * (in[i] % n_blocks) + in[i] / n_blocks;
}
static av_cold void construct_perm_table(TwinVQContext *tctx,
enum TwinVQFrameType ftype)
{
int block_size, size;
const TwinVQModeTab *mtab = tctx->mtab;
int16_t *tmp_perm = (int16_t *)tctx->tmp_buf;
if (ftype == TWINVQ_FT_PPC) {
size = tctx->avctx->channels;
block_size = mtab->ppc_shape_len;
} else {
size = tctx->avctx->channels * mtab->fmode[ftype].sub;
block_size = mtab->size / mtab->fmode[ftype].sub;
}
permutate_in_line(tmp_perm, tctx->n_div[ftype], size,
block_size, tctx->length[ftype],
tctx->length_change[ftype], ftype);
transpose_perm(tctx->permut[ftype], tmp_perm, tctx->n_div[ftype],
tctx->length[ftype], tctx->length_change[ftype]);
linear_perm(tctx->permut[ftype], tctx->permut[ftype], size,
size * block_size);
}
static av_cold void init_bitstream_params(TwinVQContext *tctx)
{
const TwinVQModeTab *mtab = tctx->mtab;
int n_ch = tctx->avctx->channels;
int total_fr_bits = tctx->avctx->bit_rate * mtab->size /
tctx->avctx->sample_rate;
int lsp_bits_per_block = n_ch * (mtab->lsp_bit0 + mtab->lsp_bit1 +
mtab->lsp_split * mtab->lsp_bit2);
int ppc_bits = n_ch * (mtab->pgain_bit + mtab->ppc_shape_bit +
mtab->ppc_period_bit);
int bsize_no_main_cb[3], bse_bits[3], i;
enum TwinVQFrameType frametype;
for (i = 0; i < 3; i++)
// +1 for history usage switch
bse_bits[i] = n_ch *
(mtab->fmode[i].bark_n_coef *
mtab->fmode[i].bark_n_bit + 1);
bsize_no_main_cb[2] = bse_bits[2] + lsp_bits_per_block + ppc_bits +
TWINVQ_WINDOW_TYPE_BITS + n_ch * TWINVQ_GAIN_BITS;
for (i = 0; i < 2; i++)
bsize_no_main_cb[i] =
lsp_bits_per_block + n_ch * TWINVQ_GAIN_BITS +
TWINVQ_WINDOW_TYPE_BITS +
mtab->fmode[i].sub * (bse_bits[i] + n_ch * TWINVQ_SUB_GAIN_BITS);
if (tctx->codec == TWINVQ_CODEC_METASOUND) {
bsize_no_main_cb[1] += 2;
bsize_no_main_cb[2] += 2;
}
// The remaining bits are all used for the main spectrum coefficients
for (i = 0; i < 4; i++) {
int bit_size, vect_size;
int rounded_up, rounded_down, num_rounded_down, num_rounded_up;
if (i == 3) {
bit_size = n_ch * mtab->ppc_shape_bit;
vect_size = n_ch * mtab->ppc_shape_len;
} else {
bit_size = total_fr_bits - bsize_no_main_cb[i];
vect_size = n_ch * mtab->size;
}
tctx->n_div[i] = (bit_size + 13) / 14;
rounded_up = (bit_size + tctx->n_div[i] - 1) /
tctx->n_div[i];
rounded_down = (bit_size) / tctx->n_div[i];
num_rounded_down = rounded_up * tctx->n_div[i] - bit_size;
num_rounded_up = tctx->n_div[i] - num_rounded_down;
tctx->bits_main_spec[0][i][0] = (rounded_up + 1) / 2;
tctx->bits_main_spec[1][i][0] = rounded_up / 2;
tctx->bits_main_spec[0][i][1] = (rounded_down + 1) / 2;
tctx->bits_main_spec[1][i][1] = rounded_down / 2;
tctx->bits_main_spec_change[i] = num_rounded_up;
rounded_up = (vect_size + tctx->n_div[i] - 1) /
tctx->n_div[i];
rounded_down = (vect_size) / tctx->n_div[i];
num_rounded_down = rounded_up * tctx->n_div[i] - vect_size;
num_rounded_up = tctx->n_div[i] - num_rounded_down;
tctx->length[i][0] = rounded_up;
tctx->length[i][1] = rounded_down;
tctx->length_change[i] = num_rounded_up;
}
for (frametype = TWINVQ_FT_SHORT; frametype <= TWINVQ_FT_PPC; frametype++)
construct_perm_table(tctx, frametype);
}
av_cold int ff_twinvq_decode_close(AVCodecContext *avctx)
{
TwinVQContext *tctx = avctx->priv_data;
int i;
for (i = 0; i < 3; i++) {
ff_mdct_end(&tctx->mdct_ctx[i]);
av_free(tctx->cos_tabs[i]);
}
av_free(tctx->curr_frame);
av_free(tctx->spectrum);
av_free(tctx->prev_frame);
av_free(tctx->tmp_buf);
return 0;
}
av_cold int ff_twinvq_decode_init(AVCodecContext *avctx)
{
int ret;
TwinVQContext *tctx = avctx->priv_data;
tctx->avctx = avctx;
avctx->sample_fmt = AV_SAMPLE_FMT_FLTP;
avpriv_float_dsp_init(&tctx->fdsp, avctx->flags & CODEC_FLAG_BITEXACT);
if ((ret = init_mdct_win(tctx))) {
av_log(avctx, AV_LOG_ERROR, "Error initializing MDCT\n");
ff_twinvq_decode_close(avctx);
return ret;
}
init_bitstream_params(tctx);
twinvq_memset_float(tctx->bark_hist[0][0], 0.1,
FF_ARRAY_ELEMS(tctx->bark_hist));
return 0;
}

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/*
* TwinVQ decoder
* Copyright (c) 2009 Vitor Sessak
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVCODEC_TWINVQ_H
#define AVCODEC_TWINVQ_H
#include <math.h>
#include <stdint.h>
#include "libavutil/common.h"
#include "libavutil/float_dsp.h"
#include "avcodec.h"
#include "fft.h"
#include "internal.h"
enum TwinVQCodec {
TWINVQ_CODEC_VQF,
TWINVQ_CODEC_METASOUND,
};
enum TwinVQFrameType {
TWINVQ_FT_SHORT = 0, ///< Short frame (divided in n sub-blocks)
TWINVQ_FT_MEDIUM, ///< Medium frame (divided in m<n sub-blocks)
TWINVQ_FT_LONG, ///< Long frame (single sub-block + PPC)
TWINVQ_FT_PPC, ///< Periodic Peak Component (part of the long frame)
};
#define TWINVQ_PPC_SHAPE_CB_SIZE 64
#define TWINVQ_PPC_SHAPE_LEN_MAX 60
#define TWINVQ_SUB_AMP_MAX 4500.0
#define TWINVQ_MULAW_MU 100.0
#define TWINVQ_GAIN_BITS 8
#define TWINVQ_AMP_MAX 13000.0
#define TWINVQ_SUB_GAIN_BITS 5
#define TWINVQ_WINDOW_TYPE_BITS 4
#define TWINVQ_PGAIN_MU 200
#define TWINVQ_LSP_COEFS_MAX 20
#define TWINVQ_LSP_SPLIT_MAX 4
#define TWINVQ_CHANNELS_MAX 2
#define TWINVQ_SUBBLOCKS_MAX 16
#define TWINVQ_BARK_N_COEF_MAX 4
/**
* Parameters and tables that are different for each frame type
*/
struct TwinVQFrameMode {
uint8_t sub; ///< Number subblocks in each frame
const uint16_t *bark_tab;
/** number of distinct bark scale envelope values */
uint8_t bark_env_size;
const int16_t *bark_cb; ///< codebook for the bark scale envelope (BSE)
uint8_t bark_n_coef;///< number of BSE CB coefficients to read
uint8_t bark_n_bit; ///< number of bits of the BSE coefs
//@{
/** main codebooks for spectrum data */
const int16_t *cb0;
const int16_t *cb1;
//@}
uint8_t cb_len_read; ///< number of spectrum coefficients to read
};
typedef struct TwinVQFrameData {
int window_type;
enum TwinVQFrameType ftype;
uint8_t main_coeffs[1024];
uint8_t ppc_coeffs[TWINVQ_PPC_SHAPE_LEN_MAX];
uint8_t gain_bits[TWINVQ_CHANNELS_MAX];
uint8_t sub_gain_bits[TWINVQ_CHANNELS_MAX * TWINVQ_SUBBLOCKS_MAX];
uint8_t bark1[TWINVQ_CHANNELS_MAX][TWINVQ_SUBBLOCKS_MAX][TWINVQ_BARK_N_COEF_MAX];
uint8_t bark_use_hist[TWINVQ_CHANNELS_MAX][TWINVQ_SUBBLOCKS_MAX];
uint8_t lpc_idx1[TWINVQ_CHANNELS_MAX];
uint8_t lpc_idx2[TWINVQ_CHANNELS_MAX][TWINVQ_LSP_SPLIT_MAX];
uint8_t lpc_hist_idx[TWINVQ_CHANNELS_MAX];
int p_coef[TWINVQ_CHANNELS_MAX];
int g_coef[TWINVQ_CHANNELS_MAX];
} TwinVQFrameData;
/**
* Parameters and tables that are different for every combination of
* bitrate/sample rate
*/
typedef struct TwinVQModeTab {
struct TwinVQFrameMode fmode[3]; ///< frame type-dependant parameters
uint16_t size; ///< frame size in samples
uint8_t n_lsp; ///< number of lsp coefficients
const float *lspcodebook;
/* number of bits of the different LSP CB coefficients */
uint8_t lsp_bit0;
uint8_t lsp_bit1;
uint8_t lsp_bit2;
uint8_t lsp_split; ///< number of CB entries for the LSP decoding
const int16_t *ppc_shape_cb; ///< PPC shape CB
/** number of the bits for the PPC period value */
uint8_t ppc_period_bit;
uint8_t ppc_shape_bit; ///< number of bits of the PPC shape CB coeffs
uint8_t ppc_shape_len; ///< size of PPC shape CB
uint8_t pgain_bit; ///< bits for PPC gain
/** constant for peak period to peak width conversion */
uint16_t peak_per2wid;
} TwinVQModeTab;
typedef struct TwinVQContext {
AVCodecContext *avctx;
AVFloatDSPContext fdsp;
FFTContext mdct_ctx[3];
const TwinVQModeTab *mtab;
// history
float lsp_hist[2][20]; ///< LSP coefficients of the last frame
float bark_hist[3][2][40]; ///< BSE coefficients of last frame
// bitstream parameters
int16_t permut[4][4096];
uint8_t length[4][2]; ///< main codebook stride
uint8_t length_change[4];
uint8_t bits_main_spec[2][4][2]; ///< bits for the main codebook
int bits_main_spec_change[4];
int n_div[4];
float *spectrum;
float *curr_frame; ///< non-interleaved output
float *prev_frame; ///< non-interleaved previous frame
int last_block_pos[2];
int discarded_packets;
float *cos_tabs[3];
// scratch buffers
float *tmp_buf;
TwinVQFrameData bits;
enum TwinVQCodec codec;
int (*read_bitstream)(AVCodecContext *avctx, struct TwinVQContext *tctx,
const uint8_t *buf, int buf_size);
void (*dec_bark_env)(struct TwinVQContext *tctx, const uint8_t *in,
int use_hist, int ch, float *out, float gain,
enum TwinVQFrameType ftype);
void (*decode_ppc)(struct TwinVQContext *tctx, int period_coef, int g_coef,
const float *shape, float *speech);
} TwinVQContext;
extern const enum TwinVQFrameType ff_twinvq_wtype_to_ftype_table[];
/** @note not speed critical, hence not optimized */
static inline void twinvq_memset_float(float *buf, float val, int size)
{
while (size--)
*buf++ = val;
}
static inline float twinvq_mulawinv(float y, float clip, float mu)
{
y = av_clipf(y / clip, -1, 1);
return clip * FFSIGN(y) * (exp(log(1 + mu) * fabs(y)) - 1) / mu;
}
int ff_twinvq_decode_frame(AVCodecContext *avctx, void *data,
int *got_frame_ptr, AVPacket *avpkt);
av_cold int ff_twinvq_decode_close(AVCodecContext *avctx);
av_cold int ff_twinvq_decode_init(AVCodecContext *avctx);
#endif /* AVCODEC_TWINVQ_DATA_H */

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/*
* TwinVQ decoder
* Copyright (c) 2009 Vitor Sessak
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <math.h>
#include <stdint.h>
#include "libavutil/channel_layout.h"
#include "avcodec.h"
#include "get_bits.h"
#include "internal.h"
#include "twinvq.h"
#include "twinvq_data.h"
static const TwinVQModeTab mode_08_08 = {
{
{ 8, bark_tab_s08_64, 10, tab.fcb08s, 1, 5, tab.cb0808s0, tab.cb0808s1, 18 },
{ 2, bark_tab_m08_256, 20, tab.fcb08m, 2, 5, tab.cb0808m0, tab.cb0808m1, 16 },
{ 1, bark_tab_l08_512, 30, tab.fcb08l, 3, 6, tab.cb0808l0, tab.cb0808l1, 17 }
},
512, 12, tab.lsp08, 1, 5, 3, 3, tab.shape08, 8, 28, 20, 6, 40
};
static const TwinVQModeTab mode_11_08 = {
{
{ 8, bark_tab_s11_64, 10, tab.fcb11s, 1, 5, tab.cb1108s0, tab.cb1108s1, 29 },
{ 2, bark_tab_m11_256, 20, tab.fcb11m, 2, 5, tab.cb1108m0, tab.cb1108m1, 24 },
{ 1, bark_tab_l11_512, 30, tab.fcb11l, 3, 6, tab.cb1108l0, tab.cb1108l1, 27 }
},
512, 16, tab.lsp11, 1, 6, 4, 3, tab.shape11, 9, 36, 30, 7, 90
};
static const TwinVQModeTab mode_11_10 = {
{
{ 8, bark_tab_s11_64, 10, tab.fcb11s, 1, 5, tab.cb1110s0, tab.cb1110s1, 21 },
{ 2, bark_tab_m11_256, 20, tab.fcb11m, 2, 5, tab.cb1110m0, tab.cb1110m1, 18 },
{ 1, bark_tab_l11_512, 30, tab.fcb11l, 3, 6, tab.cb1110l0, tab.cb1110l1, 20 }
},
512, 16, tab.lsp11, 1, 6, 4, 3, tab.shape11, 9, 36, 30, 7, 90
};
static const TwinVQModeTab mode_16_16 = {
{
{ 8, bark_tab_s16_128, 10, tab.fcb16s, 1, 5, tab.cb1616s0, tab.cb1616s1, 16 },
{ 2, bark_tab_m16_512, 20, tab.fcb16m, 2, 5, tab.cb1616m0, tab.cb1616m1, 15 },
{ 1, bark_tab_l16_1024, 30, tab.fcb16l, 3, 6, tab.cb1616l0, tab.cb1616l1, 16 }
},
1024, 16, tab.lsp16, 1, 6, 4, 3, tab.shape16, 9, 56, 60, 7, 180
};
static const TwinVQModeTab mode_22_20 = {
{
{ 8, bark_tab_s22_128, 10, tab.fcb22s_1, 1, 6, tab.cb2220s0, tab.cb2220s1, 18 },
{ 2, bark_tab_m22_512, 20, tab.fcb22m_1, 2, 6, tab.cb2220m0, tab.cb2220m1, 17 },
{ 1, bark_tab_l22_1024, 32, tab.fcb22l_1, 4, 6, tab.cb2220l0, tab.cb2220l1, 18 }
},
1024, 16, tab.lsp22_1, 1, 6, 4, 3, tab.shape22_1, 9, 56, 36, 7, 144
};
static const TwinVQModeTab mode_22_24 = {
{
{ 8, bark_tab_s22_128, 10, tab.fcb22s_1, 1, 6, tab.cb2224s0, tab.cb2224s1, 15 },
{ 2, bark_tab_m22_512, 20, tab.fcb22m_1, 2, 6, tab.cb2224m0, tab.cb2224m1, 14 },
{ 1, bark_tab_l22_1024, 32, tab.fcb22l_1, 4, 6, tab.cb2224l0, tab.cb2224l1, 15 }
},
1024, 16, tab.lsp22_1, 1, 6, 4, 3, tab.shape22_1, 9, 56, 36, 7, 144
};
static const TwinVQModeTab mode_22_32 = {
{
{ 4, bark_tab_s22_128, 10, tab.fcb22s_2, 1, 6, tab.cb2232s0, tab.cb2232s1, 11 },
{ 2, bark_tab_m22_256, 20, tab.fcb22m_2, 2, 6, tab.cb2232m0, tab.cb2232m1, 11 },
{ 1, bark_tab_l22_512, 32, tab.fcb22l_2, 4, 6, tab.cb2232l0, tab.cb2232l1, 12 }
},
512, 16, tab.lsp22_2, 1, 6, 4, 4, tab.shape22_2, 9, 56, 36, 7, 72
};
static const TwinVQModeTab mode_44_40 = {
{
{ 16, bark_tab_s44_128, 10, tab.fcb44s, 1, 6, tab.cb4440s0, tab.cb4440s1, 18 },
{ 4, bark_tab_m44_512, 20, tab.fcb44m, 2, 6, tab.cb4440m0, tab.cb4440m1, 17 },
{ 1, bark_tab_l44_2048, 40, tab.fcb44l, 4, 6, tab.cb4440l0, tab.cb4440l1, 17 }
},
2048, 20, tab.lsp44, 1, 6, 4, 4, tab.shape44, 9, 84, 54, 7, 432
};
static const TwinVQModeTab mode_44_48 = {
{
{ 16, bark_tab_s44_128, 10, tab.fcb44s, 1, 6, tab.cb4448s0, tab.cb4448s1, 15 },
{ 4, bark_tab_m44_512, 20, tab.fcb44m, 2, 6, tab.cb4448m0, tab.cb4448m1, 14 },
{ 1, bark_tab_l44_2048, 40, tab.fcb44l, 4, 6, tab.cb4448l0, tab.cb4448l1, 14 }
},
2048, 20, tab.lsp44, 1, 6, 4, 4, tab.shape44, 9, 84, 54, 7, 432
};
/**
* Evaluate a * b / 400 rounded to the nearest integer. When, for example,
* a * b == 200 and the nearest integer is ill-defined, use a table to emulate
* the following broken float-based implementation used by the binary decoder:
*
* @code
* static int very_broken_op(int a, int b)
* {
* static float test; // Ugh, force gcc to do the division first...
*
* test = a / 400.0;
* return b * test + 0.5;
* }
* @endcode
*
* @note if this function is replaced by just ROUNDED_DIV(a * b, 400.0), the
* stddev between the original file (before encoding with Yamaha encoder) and
* the decoded output increases, which leads one to believe that the encoder
* expects exactly this broken calculation.
*/
static int very_broken_op(int a, int b)
{
int x = a * b + 200;
int size;
const uint8_t *rtab;
if (x % 400 || b % 5)
return x / 400;
x /= 400;
size = tabs[b / 5].size;
rtab = tabs[b / 5].tab;
return x - rtab[size * av_log2(2 * (x - 1) / size) + (x - 1) % size];
}
/**
* Sum to data a periodic peak of a given period, width and shape.
*
* @param period the period of the peak divised by 400.0
*/
static void add_peak(int period, int width, const float *shape,
float ppc_gain, float *speech, int len)
{
int i, j;
const float *shape_end = shape + len;
int center;
// First peak centered around zero
for (i = 0; i < width / 2; i++)
speech[i] += ppc_gain * *shape++;
for (i = 1; i < ROUNDED_DIV(len, width); i++) {
center = very_broken_op(period, i);
for (j = -width / 2; j < (width + 1) / 2; j++)
speech[j + center] += ppc_gain * *shape++;
}
// For the last block, be careful not to go beyond the end of the buffer
center = very_broken_op(period, i);
for (j = -width / 2; j < (width + 1) / 2 && shape < shape_end; j++)
speech[j + center] += ppc_gain * *shape++;
}
static void decode_ppc(TwinVQContext *tctx, int period_coef, int g_coef,
const float *shape, float *speech)
{
const TwinVQModeTab *mtab = tctx->mtab;
int isampf = tctx->avctx->sample_rate / 1000;
int ibps = tctx->avctx->bit_rate / (1000 * tctx->avctx->channels);
int min_period = ROUNDED_DIV(40 * 2 * mtab->size, isampf);
int max_period = ROUNDED_DIV(40 * 2 * mtab->size * 6, isampf);
int period_range = max_period - min_period;
float pgain_step = 25000.0 / ((1 << mtab->pgain_bit) - 1);
float ppc_gain = 1.0 / 8192 *
twinvq_mulawinv(pgain_step * g_coef +
pgain_step / 2,
25000.0, TWINVQ_PGAIN_MU);
// This is actually the period multiplied by 400. It is just linearly coded
// between its maximum and minimum value.
int period = min_period +
ROUNDED_DIV(period_coef * period_range,
(1 << mtab->ppc_period_bit) - 1);
int width;
if (isampf == 22 && ibps == 32) {
// For some unknown reason, NTT decided to code this case differently...
width = ROUNDED_DIV((period + 800) * mtab->peak_per2wid,
400 * mtab->size);
} else
width = period * mtab->peak_per2wid / (400 * mtab->size);
add_peak(period, width, shape, ppc_gain, speech, mtab->ppc_shape_len);
}
static void dec_bark_env(TwinVQContext *tctx, const uint8_t *in, int use_hist,
int ch, float *out, float gain,
enum TwinVQFrameType ftype)
{
const TwinVQModeTab *mtab = tctx->mtab;
int i, j;
float *hist = tctx->bark_hist[ftype][ch];
float val = ((const float []) { 0.4, 0.35, 0.28 })[ftype];
int bark_n_coef = mtab->fmode[ftype].bark_n_coef;
int fw_cb_len = mtab->fmode[ftype].bark_env_size / bark_n_coef;
int idx = 0;
for (i = 0; i < fw_cb_len; i++)
for (j = 0; j < bark_n_coef; j++, idx++) {
float tmp2 = mtab->fmode[ftype].bark_cb[fw_cb_len * in[j] + i] *
(1.0 / 4096);
float st = use_hist ? (1.0 - val) * tmp2 + val * hist[idx] + 1.0
: tmp2 + 1.0;
hist[idx] = tmp2;
if (st < -1.0)
st = 1.0;
twinvq_memset_float(out, st * gain, mtab->fmode[ftype].bark_tab[idx]);
out += mtab->fmode[ftype].bark_tab[idx];
}
}
static void read_cb_data(TwinVQContext *tctx, GetBitContext *gb,
uint8_t *dst, enum TwinVQFrameType ftype)
{
int i;
for (i = 0; i < tctx->n_div[ftype]; i++) {
int bs_second_part = (i >= tctx->bits_main_spec_change[ftype]);
*dst++ = get_bits(gb, tctx->bits_main_spec[0][ftype][bs_second_part]);
*dst++ = get_bits(gb, tctx->bits_main_spec[1][ftype][bs_second_part]);
}
}
static int twinvq_read_bitstream(AVCodecContext *avctx, TwinVQContext *tctx,
const uint8_t *buf, int buf_size)
{
TwinVQFrameData *bits = &tctx->bits;
const TwinVQModeTab *mtab = tctx->mtab;
int channels = tctx->avctx->channels;
int sub;
GetBitContext gb;
int i, j, k;
init_get_bits(&gb, buf, buf_size * 8);
skip_bits(&gb, get_bits(&gb, 8));
bits->window_type = get_bits(&gb, TWINVQ_WINDOW_TYPE_BITS);
if (bits->window_type > 8) {
av_log(avctx, AV_LOG_ERROR, "Invalid window type, broken sample?\n");
return AVERROR_INVALIDDATA;
}
bits->ftype = ff_twinvq_wtype_to_ftype_table[tctx->bits.window_type];
sub = mtab->fmode[bits->ftype].sub;
read_cb_data(tctx, &gb, bits->main_coeffs, bits->ftype);
for (i = 0; i < channels; i++)
for (j = 0; j < sub; j++)
for (k = 0; k < mtab->fmode[bits->ftype].bark_n_coef; k++)
bits->bark1[i][j][k] =
get_bits(&gb, mtab->fmode[bits->ftype].bark_n_bit);
for (i = 0; i < channels; i++)
for (j = 0; j < sub; j++)
bits->bark_use_hist[i][j] = get_bits1(&gb);
if (bits->ftype == TWINVQ_FT_LONG) {
for (i = 0; i < channels; i++)
bits->gain_bits[i] = get_bits(&gb, TWINVQ_GAIN_BITS);
} else {
for (i = 0; i < channels; i++) {
bits->gain_bits[i] = get_bits(&gb, TWINVQ_GAIN_BITS);
for (j = 0; j < sub; j++)
bits->sub_gain_bits[i * sub + j] = get_bits(&gb,
TWINVQ_SUB_GAIN_BITS);
}
}
for (i = 0; i < channels; i++) {
bits->lpc_hist_idx[i] = get_bits(&gb, mtab->lsp_bit0);
bits->lpc_idx1[i] = get_bits(&gb, mtab->lsp_bit1);
for (j = 0; j < mtab->lsp_split; j++)
bits->lpc_idx2[i][j] = get_bits(&gb, mtab->lsp_bit2);
}
if (bits->ftype == TWINVQ_FT_LONG) {
read_cb_data(tctx, &gb, bits->ppc_coeffs, 3);
for (i = 0; i < channels; i++) {
bits->p_coef[i] = get_bits(&gb, mtab->ppc_period_bit);
bits->g_coef[i] = get_bits(&gb, mtab->pgain_bit);
}
}
return 0;
}
static av_cold int twinvq_decode_init(AVCodecContext *avctx)
{
int isampf, ibps;
TwinVQContext *tctx = avctx->priv_data;
if (!avctx->extradata || avctx->extradata_size < 12) {
av_log(avctx, AV_LOG_ERROR, "Missing or incomplete extradata\n");
return AVERROR_INVALIDDATA;
}
avctx->channels = AV_RB32(avctx->extradata) + 1;
avctx->bit_rate = AV_RB32(avctx->extradata + 4) * 1000;
isampf = AV_RB32(avctx->extradata + 8);
if (isampf < 8 || isampf > 44) {
av_log(avctx, AV_LOG_ERROR, "Unsupported sample rate\n");
return AVERROR_INVALIDDATA;
}
switch (isampf) {
case 44:
avctx->sample_rate = 44100;
break;
case 22:
avctx->sample_rate = 22050;
break;
case 11:
avctx->sample_rate = 11025;
break;
default:
avctx->sample_rate = isampf * 1000;
break;
}
if (avctx->channels <= 0 || avctx->channels > TWINVQ_CHANNELS_MAX) {
av_log(avctx, AV_LOG_ERROR, "Unsupported number of channels: %i\n",
avctx->channels);
return -1;
}
avctx->channel_layout = avctx->channels == 1 ? AV_CH_LAYOUT_MONO
: AV_CH_LAYOUT_STEREO;
ibps = avctx->bit_rate / (1000 * avctx->channels);
if (ibps < 8 || ibps > 48) {
av_log(avctx, AV_LOG_ERROR, "Bad bitrate per channel value %d\n", ibps);
return AVERROR_INVALIDDATA;
}
switch ((isampf << 8) + ibps) {
case (8 << 8) + 8:
tctx->mtab = &mode_08_08;
break;
case (11 << 8) + 8:
tctx->mtab = &mode_11_08;
break;
case (11 << 8) + 10:
tctx->mtab = &mode_11_10;
break;
case (16 << 8) + 16:
tctx->mtab = &mode_16_16;
break;
case (22 << 8) + 20:
tctx->mtab = &mode_22_20;
break;
case (22 << 8) + 24:
tctx->mtab = &mode_22_24;
break;
case (22 << 8) + 32:
tctx->mtab = &mode_22_32;
break;
case (44 << 8) + 40:
tctx->mtab = &mode_44_40;
break;
case (44 << 8) + 48:
tctx->mtab = &mode_44_48;
break;
default:
av_log(avctx, AV_LOG_ERROR,
"This version does not support %d kHz - %d kbit/s/ch mode.\n",
isampf, isampf);
return -1;
}
avctx->block_align = (avctx->bit_rate * tctx->mtab->size
/ avctx->sample_rate + 15) / 8;
tctx->codec = TWINVQ_CODEC_VQF;
tctx->read_bitstream = twinvq_read_bitstream;
tctx->dec_bark_env = dec_bark_env;
tctx->decode_ppc = decode_ppc;
return ff_twinvq_decode_init(avctx);
}
AVCodec ff_twinvq_decoder = {
.name = "twinvq",
.long_name = NULL_IF_CONFIG_SMALL("VQF TwinVQ"),
.type = AVMEDIA_TYPE_AUDIO,
.id = AV_CODEC_ID_TWINVQ,
.priv_data_size = sizeof(TwinVQContext),
.init = twinvq_decode_init,
.close = ff_twinvq_decode_close,
.decode = ff_twinvq_decode_frame,
.capabilities = CODEC_CAP_DR1,
.sample_fmts = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_FLTP,
AV_SAMPLE_FMT_NONE },
};

296
Frameworks/FFMPEG/ffmpeg-minimal/libavformat/vqf.c Normal file
View File

@ -0,0 +1,296 @@
/*
* VQF demuxer
* Copyright (c) 2009 Vitor Sessak
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "avformat.h"
#include "internal.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/dict.h"
#include "libavutil/mathematics.h"
#include "riff.h"
typedef struct VqfContext {
int frame_bit_len;
uint8_t last_frame_bits;
int remaining_bits;
} VqfContext;
static int vqf_probe(AVProbeData *probe_packet)
{
if (AV_RL32(probe_packet->buf) != MKTAG('T','W','I','N'))
return 0;
if (!memcmp(probe_packet->buf + 4, "97012000", 8))
return AVPROBE_SCORE_MAX;
if (!memcmp(probe_packet->buf + 4, "00052200", 8))
return AVPROBE_SCORE_MAX;
return AVPROBE_SCORE_EXTENSION;
}
static void add_metadata(AVFormatContext *s, uint32_t tag,
unsigned int tag_len, unsigned int remaining)
{
int len = FFMIN(tag_len, remaining);
char *buf, key[5] = {0};
if (len == UINT_MAX)
return;
buf = av_malloc(len+1);
if (!buf)
return;
avio_read(s->pb, buf, len);
buf[len] = 0;
AV_WL32(key, tag);
av_dict_set(&s->metadata, key, buf, AV_DICT_DONT_STRDUP_VAL);
}
static const AVMetadataConv vqf_metadata_conv[] = {
{ "(c) ", "copyright" },
{ "ARNG", "arranger" },
{ "AUTH", "author" },
{ "BAND", "band" },
{ "CDCT", "conductor" },
{ "COMT", "comment" },
{ "FILE", "filename" },
{ "GENR", "genre" },
{ "LABL", "publisher" },
{ "MUSC", "composer" },
{ "NAME", "title" },
{ "NOTE", "note" },
{ "PROD", "producer" },
{ "PRSN", "personnel" },
{ "REMX", "remixer" },
{ "SING", "singer" },
{ "TRCK", "track" },
{ "WORD", "words" },
{ 0 },
};
static int vqf_read_header(AVFormatContext *s)
{
VqfContext *c = s->priv_data;
AVStream *st = avformat_new_stream(s, NULL);
int chunk_tag;
int rate_flag = -1;
int header_size;
int read_bitrate = 0;
int size;
uint8_t comm_chunk[12];
if (!st)
return AVERROR(ENOMEM);
avio_skip(s->pb, 12);
header_size = avio_rb32(s->pb);
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->codec_id = AV_CODEC_ID_TWINVQ;
st->start_time = 0;
do {
int len;
chunk_tag = avio_rl32(s->pb);
if (chunk_tag == MKTAG('D','A','T','A'))
break;
len = avio_rb32(s->pb);
if ((unsigned) len > INT_MAX/2) {
av_log(s, AV_LOG_ERROR, "Malformed header\n");
return -1;
}
header_size -= 8;
switch(chunk_tag){
case MKTAG('C','O','M','M'):
avio_read(s->pb, comm_chunk, 12);
st->codec->channels = AV_RB32(comm_chunk ) + 1;
read_bitrate = AV_RB32(comm_chunk + 4);
rate_flag = AV_RB32(comm_chunk + 8);
avio_skip(s->pb, len-12);
if (st->codec->channels <= 0) {
av_log(s, AV_LOG_ERROR, "Invalid number of channels\n");
return AVERROR_INVALIDDATA;
}
st->codec->bit_rate = read_bitrate*1000;
break;
case MKTAG('D','S','I','Z'): // size of compressed data
{
char buf[8] = {0};
int size = avio_rb32(s->pb);
snprintf(buf, sizeof(buf), "%d", size);
av_dict_set(&s->metadata, "size", buf, 0);
}
break;
case MKTAG('Y','E','A','R'): // recording date
case MKTAG('E','N','C','D'): // compression date
case MKTAG('E','X','T','R'): // reserved
case MKTAG('_','Y','M','H'): // reserved
case MKTAG('_','N','T','T'): // reserved
case MKTAG('_','I','D','3'): // reserved for ID3 tags
avio_skip(s->pb, FFMIN(len, header_size));
break;
default:
add_metadata(s, chunk_tag, len, header_size);
break;
}
header_size -= len;
} while (header_size >= 0 && !url_feof(s->pb));
switch (rate_flag) {
case -1:
av_log(s, AV_LOG_ERROR, "COMM tag not found!\n");
return -1;
case 44:
st->codec->sample_rate = 44100;
break;
case 22:
st->codec->sample_rate = 22050;
break;
case 11:
st->codec->sample_rate = 11025;
break;
default:
if (rate_flag < 8 || rate_flag > 44) {
av_log(s, AV_LOG_ERROR, "Invalid rate flag %d\n", rate_flag);
return AVERROR_INVALIDDATA;
}
st->codec->sample_rate = rate_flag*1000;
break;
}
if (read_bitrate / st->codec->channels < 8 ||
read_bitrate / st->codec->channels > 48) {
av_log(s, AV_LOG_ERROR, "Invalid bitrate per channel %d\n",
read_bitrate / st->codec->channels);
return AVERROR_INVALIDDATA;
}
switch (((st->codec->sample_rate/1000) << 8) +
read_bitrate/st->codec->channels) {
case (11<<8) + 8 :
case (8 <<8) + 8 :
case (11<<8) + 10:
case (22<<8) + 32:
size = 512;
break;
case (16<<8) + 16:
case (22<<8) + 20:
case (22<<8) + 24:
size = 1024;
break;
case (44<<8) + 40:
case (44<<8) + 48:
size = 2048;
break;
default:
av_log(s, AV_LOG_ERROR, "Mode not suported: %d Hz, %d kb/s.\n",
st->codec->sample_rate, st->codec->bit_rate);
return -1;
}
c->frame_bit_len = st->codec->bit_rate*size/st->codec->sample_rate;
avpriv_set_pts_info(st, 64, size, st->codec->sample_rate);
/* put first 12 bytes of COMM chunk in extradata */
if (!(st->codec->extradata = av_malloc(12 + FF_INPUT_BUFFER_PADDING_SIZE)))
return AVERROR(ENOMEM);
st->codec->extradata_size = 12;
memcpy(st->codec->extradata, comm_chunk, 12);
ff_metadata_conv_ctx(s, NULL, vqf_metadata_conv);
return 0;
}
static int vqf_read_packet(AVFormatContext *s, AVPacket *pkt)
{
VqfContext *c = s->priv_data;
int ret;
int size = (c->frame_bit_len - c->remaining_bits + 7)>>3;
if (av_new_packet(pkt, size+2) < 0)
return AVERROR(EIO);
pkt->pos = avio_tell(s->pb);
pkt->stream_index = 0;
pkt->duration = 1;
pkt->data[0] = 8 - c->remaining_bits; // Number of bits to skip
pkt->data[1] = c->last_frame_bits;
ret = avio_read(s->pb, pkt->data+2, size);
if (ret<=0) {
av_free_packet(pkt);
return AVERROR(EIO);
}
c->last_frame_bits = pkt->data[size+1];
c->remaining_bits = (size << 3) - c->frame_bit_len + c->remaining_bits;
return size+2;
}
static int vqf_read_seek(AVFormatContext *s,
int stream_index, int64_t timestamp, int flags)
{
VqfContext *c = s->priv_data;
AVStream *st;
int ret;
int64_t pos;
st = s->streams[stream_index];
pos = av_rescale_rnd(timestamp * st->codec->bit_rate,
st->time_base.num,
st->time_base.den * (int64_t)c->frame_bit_len,
(flags & AVSEEK_FLAG_BACKWARD) ?
AV_ROUND_DOWN : AV_ROUND_UP);
pos *= c->frame_bit_len;
st->cur_dts = av_rescale(pos, st->time_base.den,
st->codec->bit_rate * (int64_t)st->time_base.num);
if ((ret = avio_seek(s->pb, ((pos-7) >> 3) + s->data_offset, SEEK_SET)) < 0)
return ret;
c->remaining_bits = -7 - ((pos-7)&7);
return 0;
}
AVInputFormat ff_vqf_demuxer = {
.name = "vqf",
.long_name = "Nippon Telegraph and Telephone Corporation (NTT) TwinVQ",
.priv_data_size = sizeof(VqfContext),
.read_probe = vqf_probe,
.read_header = vqf_read_header,
.read_packet = vqf_read_packet,
.read_seek = vqf_read_seek,
.extensions = "vqf,vql,vqe",
};

16
Info.plist
View File

@ -22,6 +22,22 @@
<key>CFBundleTypeRole</key>
<string>None</string>
</dict>
<dict>
<key>CFBundleTypeExtensions</key>
<array>
<string>vqf</string>
<string>vqe</string>
<string>vql</string>
</array>
<key>LSTypeIsPackage</key>
<false/>
<key>CFBundleTypeIconFile</key>
<string>song.icns</string>
<key>CFBundleTypeRole</key>
<string>Viewer</string>
<key>CFBundleTypeName</key>
<string>VQF File</string>
</dict>
<dict>
<key>CFBundleTypeExtensions</key>
<array>

4
Plugins/FFMPEG/FFMPEGDecoder.m
View File

@ -320,12 +320,12 @@ int lockmgr_callback(void ** mutex, enum AVLockOp op)
+ (NSArray *)fileTypes
{
return [NSArray arrayWithObjects:@"wma", @"asf", @"xwma", @"tak", @"mp3", @"mp2", @"m2a", @"mpa", @"ape", @"ac3", @"dts", @"dtshd", @"at3", @"wav", @"tta", nil];
return [NSArray arrayWithObjects:@"wma", @"asf", @"xwma", @"tak", @"mp3", @"mp2", @"m2a", @"mpa", @"ape", @"ac3", @"dts", @"dtshd", @"at3", @"wav", @"tta", @"vqf", @"vqe", @"vql", nil];
}
+ (NSArray *)mimeTypes
{
return [NSArray arrayWithObjects:@"application/wma", @"application/x-wma", @"audio/x-wma", @"audio/x-ms-wma", @"audio/x-tak", @"audio/mpeg", @"audio/x-mp3", @"audio/x-mp2", @"audio/x-ape", @"audio/x-ac3", @"audio/x-dts", @"audio/x-dtshd", @"audio/x-at3", @"audio/wav", @"tta", nil];
return [NSArray arrayWithObjects:@"application/wma", @"application/x-wma", @"audio/x-wma", @"audio/x-ms-wma", @"audio/x-tak", @"audio/mpeg", @"audio/x-mp3", @"audio/x-mp2", @"audio/x-ape", @"audio/x-ac3", @"audio/x-dts", @"audio/x-dtshd", @"audio/x-at3", @"audio/wav", @"audio/tta", @"audio/x-tta", @"audio/x-twinvq", nil];
}
+ (float)priority