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twinvq: Add proper twinvq prefixes to identifiers

tags/n2.1
Diego Biurrun 12 years ago
parent
f900f35ac8
commit
9ea24e927e
1 changed files with 95 additions and 94 deletions
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  1. +95
    -94
      libavcodec/twinvq.c

+ 95
- 94
libavcodec/twinvq.c View File

@@ -32,7 +32,7 @@
#include "sinewin.h"
#include "twinvq_data.h"

enum FrameType {
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)
@@ -42,7 +42,7 @@ enum FrameType {
/**
* Parameters and tables that are different for each frame type
*/
struct FrameMode {
struct TwinVQFrameMode {
uint8_t sub; ///< Number subblocks in each frame
const uint16_t *bark_tab;

@@ -66,8 +66,8 @@ struct FrameMode {
* Parameters and tables that are different for every combination of
* bitrate/sample rate
*/
typedef struct {
struct FrameMode fmode[3]; ///< frame type-dependant parameters
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
@@ -90,9 +90,9 @@ typedef struct {

/** constant for peak period to peak width conversion */
uint16_t peak_per2wid;
} ModeTab;
} TwinVQModeTab;

static const ModeTab mode_08_08 = {
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 },
@@ -101,7 +101,7 @@ static const ModeTab mode_08_08 = {
512, 12, tab.lsp08, 1, 5, 3, 3, tab.shape08, 8, 28, 20, 6, 40
};

static const ModeTab mode_11_08 = {
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 },
@@ -110,7 +110,7 @@ static const ModeTab mode_11_08 = {
512, 16, tab.lsp11, 1, 6, 4, 3, tab.shape11, 9, 36, 30, 7, 90
};

static const ModeTab mode_11_10 = {
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 },
@@ -119,7 +119,7 @@ static const ModeTab mode_11_10 = {
512, 16, tab.lsp11, 1, 6, 4, 3, tab.shape11, 9, 36, 30, 7, 90
};

static const ModeTab mode_16_16 = {
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 },
@@ -128,7 +128,7 @@ static const ModeTab mode_16_16 = {
1024, 16, tab.lsp16, 1, 6, 4, 3, tab.shape16, 9, 56, 60, 7, 180
};

static const ModeTab mode_22_20 = {
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 },
@@ -137,7 +137,7 @@ static const ModeTab mode_22_20 = {
1024, 16, tab.lsp22_1, 1, 6, 4, 3, tab.shape22_1, 9, 56, 36, 7, 144
};

static const ModeTab mode_22_24 = {
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 },
@@ -146,7 +146,7 @@ static const ModeTab mode_22_24 = {
1024, 16, tab.lsp22_1, 1, 6, 4, 3, tab.shape22_1, 9, 56, 36, 7, 144
};

static const ModeTab mode_22_32 = {
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 },
@@ -155,7 +155,7 @@ static const ModeTab mode_22_32 = {
512, 16, tab.lsp22_2, 1, 6, 4, 4, tab.shape22_2, 9, 56, 36, 7, 72
};

static const ModeTab mode_44_40 = {
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 },
@@ -164,7 +164,7 @@ static const ModeTab mode_44_40 = {
2048, 20, tab.lsp44, 1, 6, 4, 4, tab.shape44, 9, 84, 54, 7, 432
};

static const ModeTab mode_44_48 = {
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 },
@@ -173,12 +173,12 @@ static const ModeTab mode_44_48 = {
2048, 20, tab.lsp44, 1, 6, 4, 4, tab.shape44, 9, 84, 54, 7, 432
};

typedef struct TwinContext {
typedef struct TwinVQContext {
AVCodecContext *avctx;
AVFloatDSPContext fdsp;
FFTContext mdct_ctx[3];

const ModeTab *mtab;
const TwinVQModeTab *mtab;

// history
float lsp_hist[2][20]; ///< LSP coefficients of the last frame
@@ -202,7 +202,7 @@ typedef struct TwinContext {

// scratch buffers
float *tmp_buf;
} TwinContext;
} TwinVQContext;

#define PPC_SHAPE_CB_SIZE 64
#define PPC_SHAPE_LEN_MAX 60
@@ -263,11 +263,11 @@ static float eval_lpc_spectrum(const float *lsp, float cos_val, int order)
/**
* Evaluate the LPC amplitude spectrum envelope from the line spectrum pairs.
*/
static void eval_lpcenv(TwinContext *tctx, const float *cos_vals, float *lpc)
static void eval_lpcenv(TwinVQContext *tctx, const float *cos_vals, float *lpc)
{
int i;
const ModeTab *mtab = tctx->mtab;
int size_s = mtab->size / mtab->fmode[FT_SHORT].sub;
const TwinVQModeTab *mtab = tctx->mtab;
int size_s = mtab->size / mtab->fmode[FT_SHORT].sub;

for (i = 0; i < size_s / 2; i++) {
float cos_i = tctx->cos_tabs[0][i];
@@ -307,14 +307,14 @@ static inline float get_cos(int idx, int part, const float *cos_tab, int size)
* (negative cosine values)
* @param size the size of the whole output
*/
static inline void eval_lpcenv_or_interp(TwinContext *tctx,
enum FrameType ftype,
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 ModeTab *mtab = tctx->mtab;
const float *cos_tab = tctx->cos_tabs[ftype];
const TwinVQModeTab *mtab = tctx->mtab;
const float *cos_tab = tctx->cos_tabs[ftype];

// Fill the 's'
for (i = 0; i < size; i += step)
@@ -344,7 +344,7 @@ static inline void eval_lpcenv_or_interp(TwinContext *tctx,
out[size - 2 * step], step - 1);
}

static void eval_lpcenv_2parts(TwinContext *tctx, enum FrameType ftype,
static void eval_lpcenv_2parts(TwinVQContext *tctx, enum TwinVQFrameType ftype,
const float *buf, float *lpc,
int size, int step)
{
@@ -363,8 +363,8 @@ static void eval_lpcenv_2parts(TwinContext *tctx, enum FrameType ftype,
* bitstream, sum the corresponding vectors and write the result to *out
* after permutation.
*/
static void dequant(TwinContext *tctx, GetBitContext *gb, float *out,
enum FrameType ftype,
static void dequant(TwinVQContext *tctx, GetBitContext *gb, float *out,
enum TwinVQFrameType ftype,
const int16_t *cb0, const int16_t *cb1, int cb_len)
{
int pos = 0;
@@ -478,15 +478,15 @@ static void add_peak(int period, int width, const float *shape,
speech[j + center] += ppc_gain * *shape++;
}

static void decode_ppc(TwinContext *tctx, int period_coef, const float *shape,
float ppc_gain, float *speech)
static void decode_ppc(TwinVQContext *tctx, int period_coef,
const float *shape, float ppc_gain, float *speech)
{
const ModeTab *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;
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;

// This is actually the period multiplied by 400. It is just linearly coded
// between its maximum and minimum value.
@@ -505,10 +505,10 @@ static void decode_ppc(TwinContext *tctx, int period_coef, const float *shape,
add_peak(period, width, shape, ppc_gain, speech, mtab->ppc_shape_len);
}

static void dec_gain(TwinContext *tctx, GetBitContext *gb, enum FrameType ftype,
float *out)
static void dec_gain(TwinVQContext *tctx, GetBitContext *gb,
enum TwinVQFrameType ftype, float *out)
{
const ModeTab *mtab = tctx->mtab;
const TwinVQModeTab *mtab = tctx->mtab;
int i, j;
int sub = mtab->fmode[ftype].sub;
float step = AMP_MAX / ((1 << GAIN_BITS) - 1);
@@ -553,10 +553,10 @@ static void rearrange_lsp(int order, float *lsp, float min_dist)
}
}

static void decode_lsp(TwinContext *tctx, int lpc_idx1, uint8_t *lpc_idx2,
static void decode_lsp(TwinVQContext *tctx, int lpc_idx1, uint8_t *lpc_idx2,
int lpc_hist_idx, float *lsp, float *hist)
{
const ModeTab *mtab = tctx->mtab;
const TwinVQModeTab *mtab = tctx->mtab;
int i, j;

const float *cb = mtab->lspcodebook;
@@ -593,8 +593,8 @@ static void decode_lsp(TwinContext *tctx, int lpc_idx1, uint8_t *lpc_idx2,
ff_sort_nearly_sorted_floats(lsp, mtab->n_lsp);
}

static void dec_lpc_spectrum_inv(TwinContext *tctx, float *lsp,
enum FrameType ftype, float *lpc)
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;
@@ -617,14 +617,14 @@ static void dec_lpc_spectrum_inv(TwinContext *tctx, float *lsp,

static const uint8_t wtype_to_wsize[] = { 0, 0, 2, 2, 2, 1, 0, 1, 1 };

static void imdct_and_window(TwinContext *tctx, enum FrameType ftype, int wtype,
float *in, float *prev, int ch)
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 ModeTab *mtab = tctx->mtab;
int bsize = mtab->size / mtab->fmode[ftype].sub;
int size = mtab->size;
float *buf1 = tctx->tmp_buf;
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;
@@ -668,11 +668,11 @@ static void imdct_and_window(TwinContext *tctx, enum FrameType ftype, int wtype,
tctx->last_block_pos[ch] = (size + first_wsize) / 2;
}

static void imdct_output(TwinContext *tctx, enum FrameType ftype, int wtype,
float **out)
static void imdct_output(TwinVQContext *tctx, enum TwinVQFrameType ftype,
int wtype, float **out)
{
const ModeTab *mtab = tctx->mtab;
float *prev_buf = tctx->prev_frame + tctx->last_block_pos[0];
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++)
@@ -699,10 +699,11 @@ static void imdct_output(TwinContext *tctx, enum FrameType ftype, int wtype,
}
}

static void dec_bark_env(TwinContext *tctx, const uint8_t *in, int use_hist,
int ch, float *out, float gain, enum FrameType ftype)
static void dec_bark_env(TwinVQContext *tctx, const uint8_t *in, int use_hist,
int ch, float *out, float gain,
enum TwinVQFrameType ftype)
{
const ModeTab *mtab = tctx->mtab;
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];
@@ -726,13 +727,13 @@ static void dec_bark_env(TwinContext *tctx, const uint8_t *in, int use_hist,
}
}

static void read_and_decode_spectrum(TwinContext *tctx, GetBitContext *gb,
float *out, enum FrameType ftype)
static void read_and_decode_spectrum(TwinVQContext *tctx, GetBitContext *gb,
float *out, enum TwinVQFrameType ftype)
{
const ModeTab *mtab = tctx->mtab;
int channels = tctx->avctx->channels;
int sub = mtab->fmode[ftype].sub;
int block_size = mtab->size / sub;
const TwinVQModeTab *mtab = tctx->mtab;
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];
uint8_t bark1[CHANNELS_MAX][SUBBLOCKS_MAX][BARK_N_COEF_MAX];
@@ -812,19 +813,19 @@ static void read_and_decode_spectrum(TwinContext *tctx, GetBitContext *gb,
}
}

static int twin_decode_frame(AVCodecContext *avctx, void *data,
int *got_frame_ptr, AVPacket *avpkt)
static int 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;
TwinContext *tctx = avctx->priv_data;
TwinVQContext *tctx = avctx->priv_data;
GetBitContext gb;
const ModeTab *mtab = tctx->mtab;
float **out = NULL;
enum FrameType ftype;
const TwinVQModeTab *mtab = tctx->mtab;
float **out = NULL;
enum TwinVQFrameType ftype;
int window_type, ret;
static const enum FrameType wtype_to_ftype_table[] = {
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
};
@@ -876,14 +877,14 @@ static int twin_decode_frame(AVCodecContext *avctx, void *data,
/**
* Init IMDCT and windowing tables
*/
static av_cold int init_mdct_win(TwinContext *tctx)
static av_cold int init_mdct_win(TwinVQContext *tctx)
{
int i, j, ret;
const ModeTab *mtab = tctx->mtab;
int size_s = mtab->size / mtab->fmode[FT_SHORT].sub;
int size_m = mtab->size / mtab->fmode[FT_MEDIUM].sub;
int channels = tctx->avctx->channels;
float norm = channels == 1 ? 2.0 : 1.0;
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 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;
@@ -936,7 +937,7 @@ alloc_fail:
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 FrameType ftype)
enum TwinVQFrameType ftype)
{
int i, j;

@@ -993,11 +994,11 @@ static void linear_perm(int16_t *out, int16_t *in, int n_blocks, int size)
out[i] = block_size * (in[i] % n_blocks) + in[i] / n_blocks;
}

static av_cold void construct_perm_table(TwinContext *tctx,
enum FrameType ftype)
static av_cold void construct_perm_table(TwinVQContext *tctx,
enum TwinVQFrameType ftype)
{
int block_size, size;
const ModeTab *mtab = tctx->mtab;
const TwinVQModeTab *mtab = tctx->mtab;
int16_t *tmp_perm = (int16_t *)tctx->tmp_buf;

if (ftype == FT_PPC) {
@@ -1019,12 +1020,12 @@ static av_cold void construct_perm_table(TwinContext *tctx,
size * block_size);
}

static av_cold void init_bitstream_params(TwinContext *tctx)
static av_cold void init_bitstream_params(TwinVQContext *tctx)
{
const ModeTab *mtab = tctx->mtab;
int n_ch = tctx->avctx->channels;
int total_fr_bits = tctx->avctx->bit_rate * mtab->size /
tctx->avctx->sample_rate;
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);
@@ -1033,7 +1034,7 @@ static av_cold void init_bitstream_params(TwinContext *tctx)
mtab->ppc_period_bit);

int bsize_no_main_cb[3], bse_bits[3], i;
enum FrameType frametype;
enum TwinVQFrameType frametype;

for (i = 0; i < 3; i++)
// +1 for history usage switch
@@ -1088,9 +1089,9 @@ static av_cold void init_bitstream_params(TwinContext *tctx)
construct_perm_table(tctx, frametype);
}

static av_cold int twin_decode_close(AVCodecContext *avctx)
static av_cold int twinvq_decode_close(AVCodecContext *avctx)
{
TwinContext *tctx = avctx->priv_data;
TwinVQContext *tctx = avctx->priv_data;
int i;

for (i = 0; i < 3; i++) {
@@ -1106,10 +1107,10 @@ static av_cold int twin_decode_close(AVCodecContext *avctx)
return 0;
}

static av_cold int twin_decode_init(AVCodecContext *avctx)
static av_cold int twinvq_decode_init(AVCodecContext *avctx)
{
int ret, isampf, ibps;
TwinContext *tctx = avctx->priv_data;
TwinVQContext *tctx = avctx->priv_data;

tctx->avctx = avctx;
avctx->sample_fmt = AV_SAMPLE_FMT_FLTP;
@@ -1189,7 +1190,7 @@ static av_cold int twin_decode_init(AVCodecContext *avctx)
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");
twin_decode_close(avctx);
twinvq_decode_close(avctx);
return ret;
}
init_bitstream_params(tctx);
@@ -1203,10 +1204,10 @@ AVCodec ff_twinvq_decoder = {
.name = "twinvq",
.type = AVMEDIA_TYPE_AUDIO,
.id = AV_CODEC_ID_TWINVQ,
.priv_data_size = sizeof(TwinContext),
.init = twin_decode_init,
.close = twin_decode_close,
.decode = twin_decode_frame,
.priv_data_size = sizeof(TwinVQContext),
.init = twinvq_decode_init,
.close = twinvq_decode_close,
.decode = twinvq_decode_frame,
.capabilities = CODEC_CAP_DR1,
.long_name = NULL_IF_CONFIG_SMALL("VQF TwinVQ"),
.sample_fmts = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_FLTP,


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