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twinvq: Prefix enums and defines shared with VoxWare MetaSound

tags/n2.1
Diego Biurrun 12 years ago
parent
bc909626b0
commit
4d8d16b596
1 changed files with 76 additions and 71 deletions
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  1. +76
    -71
      libavcodec/twinvq.c

+ 76
- 71
libavcodec/twinvq.c View File

@@ -33,26 +33,26 @@
#include "twinvq_data.h"

enum TwinVQFrameType {
FT_SHORT = 0, ///< Short frame (divided in n sub-blocks)
FT_MEDIUM, ///< Medium frame (divided in m<n sub-blocks)
FT_LONG, ///< Long frame (single sub-block + PPC)
FT_PPC, ///< Periodic Peak Component (part of the long frame)
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 PPC_SHAPE_CB_SIZE 64
#define PPC_SHAPE_LEN_MAX 60
#define SUB_AMP_MAX 4500.0
#define MULAW_MU 100.0
#define GAIN_BITS 8
#define AMP_MAX 13000.0
#define SUB_GAIN_BITS 5
#define WINDOW_TYPE_BITS 4
#define PGAIN_MU 200
#define LSP_COEFS_MAX 20
#define LSP_SPLIT_MAX 4
#define CHANNELS_MAX 2
#define SUBBLOCKS_MAX 16
#define BARK_N_COEF_MAX 4
#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
@@ -82,20 +82,20 @@ typedef struct TwinVQFrameData {
enum TwinVQFrameType ftype;

uint8_t main_coeffs[1024];
uint8_t ppc_coeffs[PPC_SHAPE_LEN_MAX];
uint8_t ppc_coeffs[TWINVQ_PPC_SHAPE_LEN_MAX];

uint8_t gain_bits[CHANNELS_MAX];
uint8_t sub_gain_bits[CHANNELS_MAX * SUBBLOCKS_MAX];
uint8_t gain_bits[TWINVQ_CHANNELS_MAX];
uint8_t sub_gain_bits[TWINVQ_CHANNELS_MAX * TWINVQ_SUBBLOCKS_MAX];

uint8_t bark1[CHANNELS_MAX][SUBBLOCKS_MAX][BARK_N_COEF_MAX];
uint8_t bark_use_hist[CHANNELS_MAX][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[CHANNELS_MAX];
uint8_t lpc_idx2[CHANNELS_MAX][LSP_SPLIT_MAX];
uint8_t lpc_hist_idx[CHANNELS_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[CHANNELS_MAX];
int g_coef[CHANNELS_MAX];
int p_coef[TWINVQ_CHANNELS_MAX];
int g_coef[TWINVQ_CHANNELS_MAX];
} TwinVQFrameData;

/**
@@ -290,7 +290,7 @@ 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[FT_SHORT].sub;
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];
@@ -533,25 +533,25 @@ static void dec_gain(TwinVQContext *tctx,
const TwinVQFrameData *bits = &tctx->bits;
int i, j;
int sub = mtab->fmode[ftype].sub;
float step = AMP_MAX / ((1 << GAIN_BITS) - 1);
float sub_step = SUB_AMP_MAX / ((1 << SUB_GAIN_BITS) - 1);
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 == FT_LONG) {
if (ftype == TWINVQ_FT_LONG) {
for (i = 0; i < tctx->avctx->channels; i++)
out[i] = (1.0 / (1 << 13)) *
mulawinv(step * 0.5 + step * bits->gain_bits[i],
AMP_MAX, MULAW_MU);
TWINVQ_AMP_MAX, TWINVQ_MULAW_MU);
} else {
for (i = 0; i < tctx->avctx->channels; i++) {
float val = (1.0 / (1 << 23)) *
mulawinv(step * 0.5 + step * bits->gain_bits[i],
AMP_MAX, MULAW_MU);
TWINVQ_AMP_MAX, TWINVQ_MULAW_MU);

for (j = 0; j < sub; j++)
out[i * sub + j] =
val * mulawinv(sub_step * 0.5 +
sub_step * bits->sub_gain_bits[i * sub + j],
SUB_AMP_MAX, MULAW_MU);
TWINVQ_SUB_AMP_MAX, TWINVQ_MULAW_MU);
}
}
}
@@ -625,13 +625,13 @@ static void dec_lpc_spectrum_inv(TwinVQContext *tctx, float *lsp,
lsp[i] = 2 * cos(lsp[i]);

switch (ftype) {
case FT_LONG:
case TWINVQ_FT_LONG:
eval_lpcenv_2parts(tctx, ftype, lsp, lpc, size, 8);
break;
case FT_MEDIUM:
case TWINVQ_FT_MEDIUM:
eval_lpcenv_2parts(tctx, ftype, lsp, lpc, size, 2);
break;
case FT_SHORT:
case TWINVQ_FT_SHORT:
eval_lpcenv(tctx, lsp, lpc);
break;
}
@@ -652,9 +652,9 @@ static void imdct_and_window(TwinVQContext *tctx, enum TwinVQFrameType ftype,
float *out2 = out;
float *prev_buf;
int types_sizes[] = {
mtab->size / mtab->fmode[FT_LONG].sub,
mtab->size / mtab->fmode[FT_MEDIUM].sub,
mtab->size / (mtab->fmode[FT_SHORT].sub * 2),
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]];
@@ -662,7 +662,7 @@ static void imdct_and_window(TwinVQContext *tctx, enum TwinVQFrameType ftype,
prev_buf = prev + (size - bsize) / 2;

for (j = 0; j < mtab->fmode[ftype].sub; j++) {
int sub_wtype = ftype == FT_MEDIUM ? 8 : wtype;
int sub_wtype = ftype == TWINVQ_FT_MEDIUM ? 8 : wtype;

if (!j && wtype == 4)
sub_wtype = 4;
@@ -682,7 +682,7 @@ static void imdct_and_window(TwinVQContext *tctx, enum TwinVQFrameType ftype,
memcpy(out2, buf1 + bsize * j + wsize / 2,
(bsize - wsize / 2) * sizeof(float));

out2 += ftype == FT_MEDIUM ? (bsize - wsize) / 2 : bsize - wsize;
out2 += ftype == TWINVQ_FT_MEDIUM ? (bsize - wsize) / 2 : bsize - wsize;

prev_buf = buf1 + bsize * j + bsize / 2;
}
@@ -757,8 +757,8 @@ static void read_and_decode_spectrum(TwinVQContext *tctx, float *out,
int channels = tctx->avctx->channels;
int sub = mtab->fmode[ftype].sub;
int block_size = mtab->size / sub;
float gain[CHANNELS_MAX * SUBBLOCKS_MAX];
float ppc_shape[PPC_SHAPE_LEN_MAX * CHANNELS_MAX * 4];
float gain[TWINVQ_CHANNELS_MAX * TWINVQ_SUBBLOCKS_MAX];
float ppc_shape[TWINVQ_PPC_SHAPE_LEN_MAX * TWINVQ_CHANNELS_MAX * 4];

int i, j;

@@ -768,16 +768,18 @@ static void read_and_decode_spectrum(TwinVQContext *tctx, float *out,

dec_gain(tctx, ftype, gain);

if (ftype == FT_LONG) {
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, FT_PPC, mtab->ppc_shape_cb,
mtab->ppc_shape_cb + cb_len_p * PPC_SHAPE_CB_SIZE, cb_len_p);
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[LSP_COEFS_MAX];
float lsp[TWINVQ_LSP_COEFS_MAX];

for (j = 0; j < sub; j++) {
dec_bark_env(tctx, bits->bark1[i][j], bits->bark_use_hist[i][j], i,
@@ -788,12 +790,12 @@ static void read_and_decode_spectrum(TwinVQContext *tctx, float *out,
tctx->tmp_buf, block_size);
}

if (ftype == FT_LONG) {
if (ftype == TWINVQ_FT_LONG) {
float pgain_step = 25000.0 / ((1 << mtab->pgain_bit) - 1);
float v = 1.0 / 8192 *
mulawinv(pgain_step * bits->g_coef[i] +
pgain_step / 2,
25000.0, PGAIN_MU);
25000.0, TWINVQ_PGAIN_MU);

decode_ppc(tctx, bits->p_coef[i],
ppc_shape + i * mtab->ppc_shape_len, v, chunk);
@@ -825,8 +827,9 @@ static void read_cb_data(TwinVQContext *tctx, GetBitContext *gb,
}

static const enum TwinVQFrameType wtype_to_ftype_table[] = {
FT_LONG, FT_LONG, FT_SHORT, FT_LONG,
FT_MEDIUM, FT_LONG, FT_LONG, FT_MEDIUM, FT_MEDIUM
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
};

static int twinvq_read_bitstream(AVCodecContext *avctx, TwinVQContext *tctx,
@@ -842,7 +845,7 @@ static int twinvq_read_bitstream(AVCodecContext *avctx, TwinVQContext *tctx,
init_get_bits(&gb, buf, buf_size * 8);
skip_bits(&gb, get_bits(&gb, 8));

bits->window_type = get_bits(&gb, WINDOW_TYPE_BITS);
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");
@@ -865,14 +868,15 @@ static int twinvq_read_bitstream(AVCodecContext *avctx, TwinVQContext *tctx,
for (j = 0; j < sub; j++)
bits->bark_use_hist[i][j] = get_bits1(&gb);

if (bits->ftype == FT_LONG) {
if (bits->ftype == TWINVQ_FT_LONG) {
for (i = 0; i < channels; i++)
bits->gain_bits[i] = get_bits(&gb, GAIN_BITS);
bits->gain_bits[i] = get_bits(&gb, TWINVQ_GAIN_BITS);
} else {
for (i = 0; i < channels; i++) {
bits->gain_bits[i] = get_bits(&gb, GAIN_BITS);
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, SUB_GAIN_BITS);
bits->sub_gain_bits[i * sub + j] =
get_bits(&gb, TWINVQ_SUB_GAIN_BITS);
}
}

@@ -884,7 +888,7 @@ static int twinvq_read_bitstream(AVCodecContext *avctx, TwinVQContext *tctx,
bits->lpc_idx2[i][j] = get_bits(&gb, mtab->lsp_bit2);
}

if (bits->ftype == FT_LONG) {
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);
@@ -949,8 +953,8 @@ 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[FT_SHORT].sub;
int size_m = mtab->size / mtab->fmode[FT_MEDIUM].sub;
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;

@@ -1012,12 +1016,12 @@ static void permutate_in_line(int16_t *tab, int num_vect, int num_blocks,
for (i = 0; i < line_len[0]; i++) {
int shift;

if (num_blocks == 1 ||
(ftype == FT_LONG && num_vect % num_blocks) ||
(ftype != FT_LONG && num_vect & 1) ||
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 == FT_LONG) {
} else if (ftype == TWINVQ_FT_LONG) {
shift = i;
} else
shift = i * i;
@@ -1069,7 +1073,7 @@ static av_cold void construct_perm_table(TwinVQContext *tctx,
const TwinVQModeTab *mtab = tctx->mtab;
int16_t *tmp_perm = (int16_t *)tctx->tmp_buf;

if (ftype == FT_PPC) {
if (ftype == TWINVQ_FT_PPC) {
size = tctx->avctx->channels;
block_size = mtab->ppc_shape_len;
} else {
@@ -1111,12 +1115,13 @@ static av_cold void init_bitstream_params(TwinVQContext *tctx)
mtab->fmode[i].bark_n_bit + 1);

bsize_no_main_cb[2] = bse_bits[2] + lsp_bits_per_block + ppc_bits +
WINDOW_TYPE_BITS + n_ch * GAIN_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 * GAIN_BITS + WINDOW_TYPE_BITS +
mtab->fmode[i].sub * (bse_bits[i] + n_ch * SUB_GAIN_BITS);
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);

// The remaining bits are all used for the main spectrum coefficients
for (i = 0; i < 4; i++) {
@@ -1153,7 +1158,7 @@ static av_cold void init_bitstream_params(TwinVQContext *tctx)
tctx->length_change[i] = num_rounded_up;
}

for (frametype = FT_SHORT; frametype <= FT_PPC; frametype++)
for (frametype = TWINVQ_FT_SHORT; frametype <= TWINVQ_FT_PPC; frametype++)
construct_perm_table(tctx, frametype);
}

@@ -1210,7 +1215,7 @@ static av_cold int twinvq_decode_init(AVCodecContext *avctx)
break;
}

if (avctx->channels <= 0 || avctx->channels > CHANNELS_MAX) {
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;


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