* TwinVQ decoder
* Copyright (c) 2009 Vitor Sessak
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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,
+ * Libav 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
+ * License along with Libav; 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 "avcodec.h"
#include "get_bits.h"
-#include "dsputil.h"
#include "fft.h"
+#include "internal.h"
#include "lsp.h"
-
-#include <math.h>
-#include <stdint.h>
-
+#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)
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
+
/**
* 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;
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[PPC_SHAPE_LEN_MAX];
+
+ uint8_t gain_bits[CHANNELS_MAX];
+ uint8_t sub_gain_bits[CHANNELS_MAX * SUBBLOCKS_MAX];
+
+ uint8_t bark1[CHANNELS_MAX][SUBBLOCKS_MAX][BARK_N_COEF_MAX];
+ uint8_t bark_use_hist[CHANNELS_MAX][SUBBLOCKS_MAX];
+
+ uint8_t lpc_idx1[CHANNELS_MAX];
+ uint8_t lpc_idx2[CHANNELS_MAX][LSP_SPLIT_MAX];
+ uint8_t lpc_hist_idx[CHANNELS_MAX];
+
+ int p_coef[CHANNELS_MAX];
+ int g_coef[CHANNELS_MAX];
+} TwinVQFrameData;
+
/**
* 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
/** 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},
- { 1, bark_tab_l08_512, 30, tab.fcb08l , 3, 6, tab.cb0808l0, tab.cb0808l1, 17}
+ { 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
+ 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},
- { 1, bark_tab_l11_512, 30, tab.fcb11l , 3, 6, tab.cb1108l0, tab.cb1108l1, 27}
+ { 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
+ 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},
- { 1, bark_tab_l11_512, 30, tab.fcb11l , 3, 6, tab.cb1110l0, tab.cb1110l1, 20}
+ { 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
+ 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},
- { 1, bark_tab_l16_1024,30, tab.fcb16l , 3, 6, tab.cb1616l0, tab.cb1616l1, 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
+ 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},
- { 1, bark_tab_l22_1024,32, tab.fcb22l_1, 4, 6, tab.cb2220l0, tab.cb2220l1, 18}
+ { 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 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},
- { 1, bark_tab_l22_1024,32, tab.fcb22l_1, 4, 6, tab.cb2224l0, tab.cb2224l1, 15}
+ { 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 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},
- { 1, bark_tab_l22_512, 32, tab.fcb22l_2, 4, 6, tab.cb2232l0, tab.cb2232l1, 12}
+ { 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
+ 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},
- { 1, bark_tab_l44_2048,40, tab.fcb44l , 4, 6, tab.cb4440l0, tab.cb4440l1, 17}
+ { 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
+ 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},
- { 1, bark_tab_l44_2048,40, tab.fcb44l , 4, 6, tab.cb4448l0, tab.cb4448l1, 14}
+ { 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
+ 2048, 20, tab.lsp44, 1, 6, 4, 4, tab.shape44, 9, 84, 54, 7, 432
};
-typedef struct TwinContext {
+typedef struct TwinVQContext {
AVCodecContext *avctx;
- DSPContext dsp;
+ AVFloatDSPContext fdsp;
FFTContext mdct_ctx[3];
- const ModeTab *mtab;
+ const TwinVQModeTab *mtab;
// history
float lsp_hist[2][20]; ///< LSP coefficients of the last frame
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;
-} TwinContext;
-#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
+ TwinVQFrameData bits;
+} TwinVQContext;
/** @note not speed critical, hence not optimized */
static void memset_float(float *buf, float val, int size)
* Evaluate a single LPC amplitude spectrum envelope coefficient from the line
* spectrum pairs.
*
- * @param lsp a vector of the cosinus of the LSP values
+ * @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_dec.c: vorbis_floor0_decode
+ * @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;
+ 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) {
+ 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] - two_cos_w;
+ p *= lsp[j + 1] - two_cos_w;
- q *= lsp[j+2] - two_cos_w;
- p *= lsp[j+3] - two_cos_w;
+ q *= lsp[j + 2] - two_cos_w;
+ p *= lsp[j + 3] - two_cos_w;
}
p *= p * (2.0f - two_cos_w);
/**
* 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;
+ const TwinVQModeTab *mtab = tctx->mtab;
int size_s = mtab->size / mtab->fmode[FT_SHORT].sub;
- for (i = 0; i < size_s/2; i++) {
+ 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);
+ 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);
+ float step = (v1 - v2) / (size + 1);
for (i = 0; i < size; i++) {
- v2 += step;
+ 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 ];
+ return part ? -cos_tab[size - idx - 1]
+ : cos_tab[idx];
}
/**
* unexplained condition.
*
* @param step the size of a block "siiiibiiii"
- * @param in the cosinus of the LSP data
- * @param part is 0 for 0...PI (positive cossinus values) and 1 for PI...2PI
- (negative cossinus values)
+ * @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(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)
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);
+ 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] =
+ out[i - step / 2] =
eval_lpc_spectrum(in,
- get_cos(i-step/2, part, cos_tab, size),
+ 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 + 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);
+ interpolate(out + size - 2 * step + 1, out[size - step],
+ 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)
{
- 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);
+ 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);
+ interpolate(lpc + size / 2 - step + 1, lpc[size / 2],
+ lpc[size / 2 - step], step);
- memset_float(lpc + size - 2*step + 1, lpc[size - 2*step], 2*step - 1);
+ memset_float(lpc + size - 2 * step + 1, lpc[size - 2 * step], 2 * step - 1);
}
/**
* 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, 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 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 (get_bits1(gb))
+ if (tmp0 & 0x40)
sign0 = -1;
- bits = 6;
+ tmp0 &= 0x3F;
}
- tmp0 = get_bits(gb, bits);
bits = tctx->bits_main_spec[1][ftype][bitstream_second_part];
-
+ tmp1 = *cb_bits++;
if (bits == 7) {
- if (get_bits1(gb))
+ if (tmp1 & 0x40)
sign1 = -1;
-
- bits = 6;
+ tmp1 &= 0x3F;
}
- tmp1 = get_bits(gb, bits);
- tab0 = cb0 + tmp0*cb_len;
- tab1 = cb1 + tmp1*cb_len;
+ 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];
+ out[tctx->permut[ftype][pos + j]] = sign0 * tab0[j] +
+ sign1 * tab1[j];
pos += length;
}
-
}
static inline float 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;
+ y = av_clipf(y / clip, -1, 1);
+ return clip * FFSIGN(y) * (exp(log(1 + mu) * fabs(y)) - 1) / mu;
}
/**
- * 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
+ * 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
+ * @code
* static int very_broken_op(int a, int b)
* {
* static float test; // Ugh, force gcc to do the division first...
*
- * test = a/400.;
- * return b * test + 0.5;
+ * test = a / 400.0;
+ * return b * test + 0.5;
* }
- * \endcode
+ * @endcode
*
- * @note if this function is replaced by just ROUNDED_DIV(a*b,400.), 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.
+ * @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 x = a * b + 200;
int size;
const uint8_t *rtab;
- if (x%400 || b%5)
- return x/400;
+ 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];
+ size = tabs[b / 5].size;
+ rtab = tabs[b / 5].tab;
+ return x - rtab[size * av_log2(2 * (x - 1) / size) + (x - 1) % size];
}
/**
int center;
// First peak centered around zero
- for (i = 0; i < width/2; i++)
+ for (i = 0; i < width / 2; i++)
speech[i] += ppc_gain * *shape++;
- for (i = 1; i < ROUNDED_DIV(len,width) ; i++) {
+ 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 (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++;
+ for (j = -width / 2; j < (width + 1) / 2 && shape < shape_end; j++)
+ 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(6*40*2*mtab->size, isampf);
+ 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.
int period = min_period +
- ROUNDED_DIV(period_coef*period_range, (1 << mtab->ppc_period_bit) - 1);
+ 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);
+ width = ROUNDED_DIV((period + 800) * mtab->peak_per2wid,
+ 400 * mtab->size);
} else
- width = (period )* mtab->peak_per2wid/(400*mtab->size);
+ width = period * mtab->peak_per2wid / (400 * mtab->size);
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,
+ enum TwinVQFrameType ftype, float *out)
{
- const ModeTab *mtab = tctx->mtab;
+ const TwinVQModeTab *mtab = tctx->mtab;
+ const TwinVQFrameData *bits = &tctx->bits;
int i, j;
- int sub = mtab->fmode[ftype].sub;
- float step = AMP_MAX / ((1 << GAIN_BITS) - 1);
+ 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);
if (ftype == FT_LONG) {
for (i = 0; i < tctx->avctx->channels; i++)
- out[i] = (1./(1<<13)) *
- mulawinv(step * 0.5 + step * get_bits(gb, GAIN_BITS),
- AMP_MAX, MULAW_MU);
+ out[i] = (1.0 / (1 << 13)) *
+ mulawinv(step * 0.5 + step * bits->gain_bits[i],
+ AMP_MAX, MULAW_MU);
} else {
for (i = 0; i < tctx->avctx->channels; i++) {
- float val = (1./(1<<23)) *
- mulawinv(step * 0.5 + step * get_bits(gb, GAIN_BITS),
- AMP_MAX, MULAW_MU);
-
- for (j = 0; j < sub; j++) {
- out[i*sub + j] =
- val*mulawinv(sub_step* 0.5 +
- sub_step* get_bits(gb, SUB_GAIN_BITS),
- SUB_AMP_MAX, MULAW_MU);
- }
+ float val = (1.0 / (1 << 23)) *
+ mulawinv(step * 0.5 + step * bits->gain_bits[i],
+ AMP_MAX, 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);
}
}
}
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;
+ 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;
+ lsp[i - 1] = avg - min_dist2;
+ lsp[i] = avg + min_dist2;
}
}
-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;
- const float *cb2 = cb + (1 << mtab->lsp_bit1)*mtab->n_lsp;
- const float *cb3 = cb2 + (1 << mtab->lsp_bit2)*mtab->n_lsp;
+ 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,
j = 0;
for (i = 0; i < mtab->lsp_split; i++) {
- int chunk_end = ((i + 1)*mtab->n_lsp + funny_rounding[i])/mtab->lsp_split;
+ 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] +
+ 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. - cb3[lpc_hist_idx*mtab->n_lsp + i];
- float tmp2 = hist[i] * cb3[lpc_hist_idx*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;
}
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;
for (i = 0; i < tctx->mtab->n_lsp; i++)
- lsp[i] = 2*cos(lsp[i]);
+ lsp[i] = 2 * cos(lsp[i]);
switch (ftype) {
case FT_LONG:
}
}
-static void imdct_and_window(TwinContext *tctx, enum FrameType ftype, int wtype,
- float *in, float *prev, int ch)
+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)
{
- const ModeTab *mtab = tctx->mtab;
+ 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;
- int wsize; // Window size
- float *out = tctx->curr_frame + 2*ch*mtab->size;
+ int j, first_wsize, wsize; // Window size
+ float *out = tctx->curr_frame + 2 * ch * mtab->size;
float *out2 = out;
float *prev_buf;
- int first_wsize;
-
- static const uint8_t wtype_to_wsize[] = {0, 0, 2, 2, 2, 1, 0, 1, 1};
int types_sizes[] = {
- mtab->size / mtab->fmode[FT_LONG ].sub,
- mtab->size / mtab->fmode[FT_MEDIUM].sub,
- mtab->size / (2*mtab->fmode[FT_SHORT ].sub),
+ mtab->size / mtab->fmode[FT_LONG].sub,
+ mtab->size / mtab->fmode[FT_MEDIUM].sub,
+ mtab->size / (mtab->fmode[FT_SHORT].sub * 2),
};
- wsize = types_sizes[wtype_to_wsize[wtype]];
+ wsize = types_sizes[wtype_to_wsize[wtype]];
first_wsize = wsize;
- prev_buf = prev + (size - bsize)/2;
+ prev_buf = prev + (size - bsize) / 2;
for (j = 0; j < mtab->fmode[ftype].sub; j++) {
int sub_wtype = ftype == FT_MEDIUM ? 8 : wtype;
if (!j && wtype == 4)
sub_wtype = 4;
- else if (j == mtab->fmode[ftype].sub-1 && wtype == 7)
+ else if (j == mtab->fmode[ftype].sub - 1 && wtype == 7)
sub_wtype = 7;
wsize = types_sizes[wtype_to_wsize[sub_wtype]];
- ff_imdct_half(&tctx->mdct_ctx[ftype], buf1 + bsize*j, in + bsize*j);
+ mdct->imdct_half(mdct, buf1 + bsize * j, in + bsize * j);
- tctx->dsp.vector_fmul_window(out2,
- prev_buf + (bsize-wsize)/2,
- buf1 + bsize*j,
- ff_sine_windows[av_log2(wsize)],
- 0.0,
- wsize/2);
+ 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));
+ memcpy(out2, buf1 + bsize * j + wsize / 2,
+ (bsize - wsize / 2) * sizeof(float));
- out2 += ftype == FT_MEDIUM ? (bsize-wsize)/2 : bsize - wsize;
+ out2 += ftype == FT_MEDIUM ? (bsize - wsize) / 2 : bsize - wsize;
- prev_buf = buf1 + bsize*j + bsize/2;
+ prev_buf = buf1 + bsize * j + bsize / 2;
}
- tctx->last_block_pos[ch] = (size + first_wsize)/2;
+ 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];
- int i, j;
+ 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++) {
+ 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,
+ tctx->spectrum + i * mtab->size,
+ prev_buf + 2 * i * mtab->size,
i);
- }
- if (tctx->avctx->channels == 2) {
- for (i = 0; i < mtab->size - tctx->last_block_pos[0]; i++) {
- float f1 = prev_buf[ i];
- float f2 = prev_buf[2*mtab->size + i];
- out[2*i ] = f1 + f2;
- out[2*i + 1] = f1 - f2;
- }
- for (j = 0; i < mtab->size; j++,i++) {
- float f1 = tctx->curr_frame[ j];
- float f2 = tctx->curr_frame[2*mtab->size + j];
- out[2*i ] = f1 + f2;
- out[2*i + 1] = f1 - f2;
- }
- } else {
- memcpy(out, prev_buf,
- (mtab->size - tctx->last_block_pos[0]) * sizeof(*out));
+ if (!out)
+ return;
- out += mtab->size - tctx->last_block_pos[0];
+ size2 = tctx->last_block_pos[0];
+ size1 = mtab->size - size2;
- memcpy(out, tctx->curr_frame,
- (tctx->last_block_pos[0]) * sizeof(*out));
- }
+ 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 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;
- 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;
+ 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./4096);
- float st = use_hist ?
- (1. - val) * tmp2 + val*hist[idx] + 1. : tmp2 + 1.;
+ 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.) st = 1.;
+ if (st < -1.0)
+ st = 1.0;
memset_float(out, st * gain, mtab->fmode[ftype].bark_tab[idx]);
out += mtab->fmode[ftype].bark_tab[idx];
}
-
}
-static void read_and_decode_spectrum(TwinContext *tctx, GetBitContext *gb,
- float *out, enum FrameType ftype)
+static void read_and_decode_spectrum(TwinVQContext *tctx, float *out,
+ enum TwinVQFrameType ftype)
{
- const ModeTab *mtab = tctx->mtab;
- int channels = tctx->avctx->channels;
- int sub = mtab->fmode[ftype].sub;
+ 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[CHANNELS_MAX*SUBBLOCKS_MAX];
+ 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];
- uint8_t bark_use_hist[CHANNELS_MAX][SUBBLOCKS_MAX];
-
- uint8_t lpc_idx1[CHANNELS_MAX];
- uint8_t lpc_idx2[CHANNELS_MAX][LSP_SPLIT_MAX];
- uint8_t lpc_hist_idx[CHANNELS_MAX];
- int i, j, k;
+ int i, j;
- dequant(tctx, gb, out, ftype,
+ dequant(tctx, bits->main_coeffs, out, ftype,
mtab->fmode[ftype].cb0, mtab->fmode[ftype].cb1,
mtab->fmode[ftype].cb_len_read);
- for (i = 0; i < channels; i++)
- for (j = 0; j < sub; j++)
- for (k = 0; k < mtab->fmode[ftype].bark_n_coef; k++)
- bark1[i][j][k] =
- get_bits(gb, mtab->fmode[ftype].bark_n_bit);
-
- for (i = 0; i < channels; i++)
- for (j = 0; j < sub; j++)
- bark_use_hist[i][j] = get_bits1(gb);
-
- dec_gain(tctx, gb, ftype, gain);
-
- for (i = 0; i < channels; i++) {
- lpc_hist_idx[i] = get_bits(gb, tctx->mtab->lsp_bit0);
- lpc_idx1 [i] = get_bits(gb, tctx->mtab->lsp_bit1);
-
- for (j = 0; j < tctx->mtab->lsp_split; j++)
- lpc_idx2[i][j] = get_bits(gb, tctx->mtab->lsp_bit2);
- }
+ dec_gain(tctx, ftype, gain);
if (ftype == FT_LONG) {
- int cb_len_p = (tctx->n_div[3] + mtab->ppc_shape_len*channels - 1)/
- tctx->n_div[3];
- dequant(tctx, gb, ppc_shape, FT_PPC, mtab->ppc_shape_cb,
- mtab->ppc_shape_cb + cb_len_p*PPC_SHAPE_CB_SIZE, cb_len_p);
+ 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);
}
for (i = 0; i < channels; i++) {
float lsp[LSP_COEFS_MAX];
for (j = 0; j < sub; j++) {
- dec_bark_env(tctx, bark1[i][j], bark_use_hist[i][j], i,
- tctx->tmp_buf, gain[sub*i+j], ftype);
-
- tctx->dsp.vector_fmul(chunk + block_size*j, chunk + block_size*j, tctx->tmp_buf,
- block_size);
+ 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 == FT_LONG) {
- float pgain_step = 25000. / ((1 << mtab->pgain_bit) - 1);
- int p_coef = get_bits(gb, tctx->mtab->ppc_period_bit);
- int g_coef = get_bits(gb, tctx->mtab->pgain_bit);
- float v = 1./8192*
- mulawinv(pgain_step*g_coef+ pgain_step/2, 25000., PGAIN_MU);
-
- decode_ppc(tctx, p_coef, ppc_shape + i*mtab->ppc_shape_len, v,
- chunk);
+ 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);
+
+ decode_ppc(tctx, bits->p_coef[i],
+ ppc_shape + i * mtab->ppc_shape_len, v, chunk);
}
- decode_lsp(tctx, lpc_idx1[i], lpc_idx2[i], lpc_hist_idx[i], lsp,
- tctx->lsp_hist[i]);
+ 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->dsp.vector_fmul(chunk, chunk, tctx->tmp_buf, block_size);
+ tctx->fdsp.vector_fmul(chunk, chunk, tctx->tmp_buf, block_size);
chunk += block_size;
}
}
}
-static int twin_decode_frame(AVCodecContext * avctx, void *data,
- int *data_size, AVPacket *avpkt)
+static void read_cb_data(TwinVQContext *tctx, GetBitContext *gb,
+ uint8_t *dst, enum TwinVQFrameType ftype)
{
- const uint8_t *buf = avpkt->data;
- int buf_size = avpkt->size;
- TwinContext *tctx = avctx->priv_data;
- GetBitContext gb;
- const ModeTab *mtab = tctx->mtab;
- float *out = data;
- enum FrameType ftype;
- int window_type;
- static const enum FrameType wtype_to_ftype_table[] = {
- FT_LONG, FT_LONG, FT_SHORT, FT_LONG,
- FT_MEDIUM, FT_LONG, FT_LONG, FT_MEDIUM, FT_MEDIUM
- };
+ int i;
- if (buf_size*8 < avctx->bit_rate*mtab->size/avctx->sample_rate + 8) {
- av_log(avctx, AV_LOG_ERROR,
- "Frame too small (%d bytes). Truncated file?\n", buf_size);
- *data_size = 0;
- return buf_size;
+ 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 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
+};
+
+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));
- window_type = get_bits(&gb, WINDOW_TYPE_BITS);
- if (window_type > 8) {
+ bits->window_type = get_bits(&gb, WINDOW_TYPE_BITS);
+
+ if (bits->window_type > 8) {
av_log(avctx, AV_LOG_ERROR, "Invalid window type, broken sample?\n");
- return -1;
+ return AVERROR_INVALIDDATA;
}
- ftype = wtype_to_ftype_table[window_type];
+ bits->ftype = wtype_to_ftype_table[tctx->bits.window_type];
- read_and_decode_spectrum(tctx, &gb, tctx->spectrum, ftype);
+ sub = mtab->fmode[bits->ftype].sub;
- imdct_output(tctx, ftype, window_type, out);
+ read_cb_data(tctx, &gb, bits->main_coeffs, bits->ftype);
- FFSWAP(float*, tctx->curr_frame, tctx->prev_frame);
+ 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 == FT_LONG) {
+ for (i = 0; i < channels; i++)
+ bits->gain_bits[i] = get_bits(&gb, GAIN_BITS);
+ } else {
+ for (i = 0; i < channels; i++) {
+ bits->gain_bits[i] = get_bits(&gb, GAIN_BITS);
+ for (j = 0; j < sub; j++)
+ bits->sub_gain_bits[i * sub + j] = get_bits(&gb, 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 == 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 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;
+ TwinVQContext *tctx = avctx->priv_data;
+ const TwinVQModeTab *mtab = tctx->mtab;
+ float **out = NULL;
+ int ret;
+
+ if (buf_size * 8 < avctx->bit_rate * mtab->size / avctx->sample_rate + 8) {
+ av_log(avctx, AV_LOG_ERROR,
+ "Frame too small (%d bytes). Truncated file?\n", buf_size);
+ return AVERROR(EINVAL);
+ }
- if (tctx->avctx->frame_number < 2) {
- *data_size=0;
+ /* get output buffer */
+ if (tctx->discarded_packets >= 2) {
+ frame->nb_samples = mtab->size;
+ if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) {
+ av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
+ return ret;
+ }
+ out = (float **)frame->extended_data;
+ }
+
+ if ((ret = twinvq_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;
}
- *data_size = mtab->size*avctx->channels*4;
+ *got_frame_ptr = 1;
return buf_size;
}
/**
* Init IMDCT and windowing tables
*/
-static av_cold void init_mdct_win(TwinContext *tctx)
+static av_cold int init_mdct_win(TwinVQContext *tctx)
{
- int i,j;
- const ModeTab *mtab = tctx->mtab;
+ 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 channels = tctx->avctx->channels;
- float norm = channels == 1 ? 2. : 1.;
+ float norm = channels == 1 ? 2.0 : 1.0;
for (i = 0; i < 3; i++) {
- int bsize = tctx->mtab->size/tctx->mtab->fmode[i].sub;
- ff_mdct_init(&tctx->mdct_ctx[i], av_log2(bsize) + 1, 1,
- -sqrt(norm/bsize) / (1<<15));
+ 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;
}
- tctx->tmp_buf = av_malloc(mtab->size * sizeof(*tctx->tmp_buf));
+ FF_ALLOC_OR_GOTO(tctx->avctx, tctx->tmp_buf,
+ mtab->size * sizeof(*tctx->tmp_buf), alloc_fail);
- tctx->spectrum = av_malloc(2*mtab->size*channels*sizeof(float));
- tctx->curr_frame = av_malloc(2*mtab->size*channels*sizeof(float));
- tctx->prev_frame = av_malloc(2*mtab->size*channels*sizeof(float));
+ 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;
- tctx->cos_tabs[i] = av_malloc((m/4)*sizeof(*tctx->cos_tabs));
-
- 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];
+ 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(size_s / 2));
ff_init_ff_sine_windows(av_log2(mtab->size));
+
+ return 0;
+
+alloc_fail:
+ return AVERROR(ENOMEM);
}
/**
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;
+ int i, j;
for (i = 0; i < line_len[0]; i++) {
int shift;
- if (num_blocks == 1 ||
+ if (num_blocks == 1 ||
(ftype == FT_LONG && num_vect % num_blocks) ||
- (ftype != FT_LONG && num_vect & 1 ) ||
+ (ftype != FT_LONG && num_vect & 1) ||
i == line_len[1]) {
shift = 0;
} else if (ftype == FT_LONG) {
shift = i;
} else
- shift = i*i;
+ 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;
+ 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
+ * @verbatim
*
* abcdefgh
* ijklmnop
* qrstuvw
* x123456
*
- * \endverbatim
+ * @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;
+ 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];
+ 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 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(TwinContext *tctx,enum FrameType ftype)
+static av_cold void construct_perm_table(TwinVQContext *tctx,
+ enum TwinVQFrameType ftype)
{
- int block_size;
- const ModeTab *mtab = tctx->mtab;
- int size = tctx->avctx->channels*mtab->fmode[ftype].sub;
- int16_t *tmp_perm = (int16_t *) tctx->tmp_buf;
+ int block_size, size;
+ const TwinVQModeTab *mtab = tctx->mtab;
+ int16_t *tmp_perm = (int16_t *)tctx->tmp_buf;
if (ftype == FT_PPC) {
- size = tctx->avctx->channels;
+ size = tctx->avctx->channels;
block_size = mtab->ppc_shape_len;
- } else
+ } 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[ftype], tctx->length_change[ftype]);
linear_perm(tctx->permut[ftype], tctx->permut[ftype], size,
- size*block_size);
+ 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);
+ 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 ppc_bits = n_ch * (mtab->pgain_bit + mtab->ppc_shape_bit +
+ mtab->ppc_period_bit);
- int bsize_no_main_cb[3];
- int bse_bits[3];
- int i;
- enum FrameType frametype;
+ 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);
+ (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 +
- WINDOW_TYPE_BITS + n_ch*GAIN_BITS;
+ WINDOW_TYPE_BITS + n_ch * 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 * GAIN_BITS + WINDOW_TYPE_BITS +
+ mtab->fmode[i].sub * (bse_bits[i] + n_ch * SUB_GAIN_BITS);
// The remaining bits are all used for the main spectrum coefficients
for (i = 0; i < 4; i++) {
- int bit_size;
- int vect_size;
+ 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];
+ 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;
+ 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;
+ 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;
}
construct_perm_table(tctx, frametype);
}
-static av_cold int twin_decode_init(AVCodecContext *avctx)
+static av_cold int twinvq_decode_close(AVCodecContext *avctx)
{
- TwinContext *tctx = avctx->priv_data;
- int isampf = avctx->sample_rate/1000;
- int ibps = avctx->bit_rate/(1000 * avctx->channels);
+ 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;
+}
+
+static av_cold int twinvq_decode_init(AVCodecContext *avctx)
+{
+ int ret, isampf, ibps;
+ TwinVQContext *tctx = avctx->priv_data;
tctx->avctx = avctx;
- avctx->sample_fmt = AV_SAMPLE_FMT_FLT;
+ avctx->sample_fmt = AV_SAMPLE_FMT_FLTP;
- if (avctx->channels > CHANNELS_MAX) {
+ 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 > 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);
- 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;
+ 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);
+ av_log(avctx, AV_LOG_ERROR,
+ "This version does not support %d kHz - %d kbit/s/ch mode.\n",
+ isampf, isampf);
return -1;
}
- dsputil_init(&tctx->dsp, avctx);
- init_mdct_win(tctx);
+ 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");
+ twinvq_decode_close(avctx);
+ return ret;
+ }
init_bitstream_params(tctx);
memset_float(tctx->bark_hist[0][0], 0.1, FF_ARRAY_ELEMS(tctx->bark_hist));
return 0;
}
-static av_cold int twin_decode_close(AVCodecContext *avctx)
-{
- TwinContext *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;
-}
-
-AVCodec twinvq_decoder =
-{
- "twinvq",
- AVMEDIA_TYPE_AUDIO,
- CODEC_ID_TWINVQ,
- sizeof(TwinContext),
- twin_decode_init,
- NULL,
- twin_decode_close,
- twin_decode_frame,
- .long_name = NULL_IF_CONFIG_SMALL("VQF TwinVQ"),
+AVCodec ff_twinvq_decoder = {
+ .name = "twinvq",
+ .type = AVMEDIA_TYPE_AUDIO,
+ .id = AV_CODEC_ID_TWINVQ,
+ .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,
+ AV_SAMPLE_FMT_NONE },
};
projects / ffmpeg / blobdiff