60 #define MONO 0x1000001
61 #define STEREO 0x1000002
62 #define JOINT_STEREO 0x1000003
63 #define MC_COOK 0x2000000 // multichannel Cook, not supported
65 #define SUBBAND_SIZE 20
66 #define MAX_SUBPACKETS 5
102 typedef struct cook {
107 void (*scalar_dequant)(
struct cook *q,
int index,
int quant_index,
108 int *subband_coef_index,
int *subband_coef_sign,
111 void (*decouple)(
struct cook *q,
115 float *decode_buffer,
116 float *mlt_buffer1,
float *mlt_buffer2);
118 void (*imlt_window)(
struct cook *q,
float *buffer1,
119 cook_gains *gains_ptr,
float *previous_buffer);
122 int gain_index,
int gain_index_next);
124 void (*saturate_output)(
struct cook *q,
float *
out);
141 VLC envelope_quant_index[13];
146 float gain_table[23];
152 float decode_buffer_1[1024];
153 float decode_buffer_2[1024];
154 float decode_buffer_0[1060];
171 static const float exp2_tab[2] = {1,
M_SQRT2};
172 float exp2_val =
powf(2, -63);
173 float root_val =
powf(2, -32);
174 for (i = -63; i < 64; i++) {
188 for (i = 0; i < 23; i++)
199 for (i = 0; i < 13; i++) {
205 for (i = 0; i < 7; i++) {
235 for (j = 0; j < mlt_size; j++)
252 for (i = 0; i < 5; i++)
258 #define DECODE_BYTES_PAD1(bytes) (3 - ((bytes) + 3) % 4)
259 #define DECODE_BYTES_PAD2(bytes) ((bytes) % 4 + DECODE_BYTES_PAD1(2 * (bytes)))
283 static const uint32_t
tab[4] = {
290 uint32_t *obuf = (uint32_t *) out;
297 off = (intptr_t) inbuffer & 3;
298 buf = (
const uint32_t *) (inbuffer - off);
301 for (i = 0; i < bytes / 4; i++)
302 obuf[i] = c ^ buf[i];
321 for (i = 0; i < 13; i++)
323 for (i = 0; i < 7; i++)
351 gaininfo[i++] = gain;
364 int *quant_index_table)
368 quant_index_table[0] =
get_bits(&q->
gb, 6) - 6;
384 quant_index_table[i] = quant_index_table[i - 1] + j - 12;
385 if (quant_index_table[i] > 63 || quant_index_table[i] < -63) {
387 "Invalid quantizer %d at position %d, outside [-63, 63] range\n",
388 quant_index_table[i], i);
407 int exp_idx, bias, tmpbias1, tmpbias2, bits_left, num_bits,
index, v, i, j;
408 int exp_index2[102] = { 0 };
409 int exp_index1[102] = { 0 };
411 int tmp_categorize_array[128 * 2] = { 0 };
424 for (i = 32; i > 0; i = i / 2) {
428 exp_idx = av_clip_uintp2((i - quant_index_table[index] + bias) / 2, 3);
432 if (num_bits >= bits_left - 32)
439 exp_idx = av_clip_uintp2((bias - quant_index_table[i]) / 2, 3);
441 exp_index1[i] = exp_idx;
442 exp_index2[i] = exp_idx;
444 tmpbias1 = tmpbias2 = num_bits;
447 if (tmpbias1 + tmpbias2 > 2 * bits_left) {
451 if (exp_index1[i] < 7) {
452 v = (-2 * exp_index1[i]) - quant_index_table[i] + bias;
461 tmp_categorize_array[tmp_categorize_array1_idx++] =
index;
469 if (exp_index2[i] > 0) {
470 v = (-2 * exp_index2[i]) - quant_index_table[i] + bias;
479 tmp_categorize_array[--tmp_categorize_array2_idx] =
index;
487 category[i] = exp_index2[i];
490 category_index[i] = tmp_categorize_array[tmp_categorize_array2_idx++];
507 int idx = category_index[i];
524 int *subband_coef_index,
int *subband_coef_sign,
531 if (subband_coef_index[i]) {
533 if (subband_coef_sign[i])
553 int *subband_coef_index,
int *subband_coef_sign)
556 int vlc, vd,
tmp, result;
566 for (j = vd - 1; j >= 0; j--) {
571 for (j = 0; j < vd; j++) {
572 if (subband_coef_index[i * vd + j]) {
577 subband_coef_sign[i * vd + j] = 0;
580 subband_coef_sign[i * vd + j] = 0;
597 int *quant_index_table,
float *mlt_buffer)
609 index = category[
band];
610 if (category[band] < 7) {
611 if (
unpack_SQVH(q, p, category[band], subband_coef_index, subband_coef_sign)) {
614 category[band + j] = 7;
618 memset(subband_coef_index, 0,
sizeof(subband_coef_index));
619 memset(subband_coef_sign, 0,
sizeof(subband_coef_sign));
622 subband_coef_index, subband_coef_sign,
634 int category_index[128] = { 0 };
636 int quant_index_table[102];
642 categorize(q, p, quant_index_table, category, category_index);
663 int gain_index,
int gain_index_next)
667 fc1 =
pow2tab[gain_index + 63];
669 if (gain_index == gain_index_next) {
673 fc2 = q->
gain_table[11 + (gain_index_next - gain_index)];
690 cook_gains *gains_ptr,
float *previous_buffer)
702 inbuffer[i] = inbuffer[i] * fc * q->
mlt_window[i] -
718 cook_gains *gains_ptr,
float *previous_buffer)
727 q->
imlt_window(q, buffer1, gains_ptr, previous_buffer);
730 for (i = 0; i < 8; i++)
731 if (gains_ptr->
now[i] || gains_ptr->
now[i + 1])
733 gains_ptr->
now[i], gains_ptr->
now[i + 1]);
736 memcpy(previous_buffer, buffer0,
753 int length = end - start + 1;
759 for (i = 0; i <
length; i++)
764 for (i = 0; i <
length; i++) {
770 decouple_tab[start + i] = v;
790 float *decode_buffer,
791 float *mlt_buffer1,
float *mlt_buffer2)
796 mlt_buffer1[SUBBAND_SIZE * subband + j] = f1 * decode_buffer[tmp_idx];
797 mlt_buffer2[SUBBAND_SIZE * subband + j] = f2 * decode_buffer[tmp_idx];
809 float *mlt_buffer_left,
float *mlt_buffer_right)
816 const float *cplscale;
821 memset(mlt_buffer_left, 0, 1024 *
sizeof(*mlt_buffer_left));
822 memset(mlt_buffer_right, 0, 1024 *
sizeof(*mlt_buffer_right));
830 mlt_buffer_left[i * 20 + j] = decode_buffer[i * 40 + j];
831 mlt_buffer_right[i * 20 + j] = decode_buffer[i * 40 + 20 + j];
840 idx -= decouple_tab[cpl_tmp];
842 f1 = cplscale[decouple_tab[cpl_tmp] + 1];
844 q->
decouple(q, p, i, f1, f2, decode_buffer,
845 mlt_buffer_left, mlt_buffer_right);
901 cook_gains *gains_ptr,
float *previous_buffer,
904 imlt_gain(q, decode_buffer, gains_ptr, previous_buffer);
919 const uint8_t *inbuffer,
float **outbuffer)
921 int sub_packet_size = p->
size;
949 outbuffer ? outbuffer[p->
ch_idx + 1] : NULL);
953 outbuffer ? outbuffer[p->
ch_idx + 1] : NULL);
961 int *got_frame_ptr,
AVPacket *avpkt)
965 int buf_size = avpkt->
size;
967 float **samples =
NULL;
972 if (buf_size < avctx->block_align)
991 "frame subpacket size total > avctx->block_align!\n");
1002 "subpacket[%i] size %i js %i %i block_align %i\n",
1029 #define PRINT(a, b) ff_dlog(q->avctx, " %s = %d\n", a, b);
1058 unsigned int channel_mask = 0;
1059 int samples_per_frame = 0;
1087 samples_per_frame = bytestream2_get_be16(&gb);
1089 bytestream2_get_be32(&gb);
static void mlt_compensate_output(COOKContext *q, float *decode_buffer, cook_gains *gains_ptr, float *previous_buffer, float *out)
Final part of subpacket decoding: Apply modulated lapped transform, gain compensation, clip and convert to integer.
static av_cold void init_cplscales_table(COOKContext *q)
static const int cplband[51]
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
This structure describes decoded (raw) audio or video data.
void(* scalar_dequant)(struct cook *q, int index, int quant_index, int *subband_coef_index, int *subband_coef_sign, float *mlt_p)
ptrdiff_t const GLvoid * data
static const uint16_t envelope_quant_index_huffcodes[13][24]
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
float decode_buffer_1[1024]
int64_t bit_rate
the average bitrate
static av_cold int init(AVCodecContext *avctx)
static const int kmax_tab[7]
static const int expbits_tab[8]
static void categorize(COOKContext *q, COOKSubpacket *p, const int *quant_index_table, int *category, int *category_index)
Calculate the category and category_index vector.
static const float *const cplscales[5]
static av_always_inline void bytestream2_init(GetByteContext *g, const uint8_t *buf, int buf_size)
static av_cold void init_pow2table(void)
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
#define AV_CH_LAYOUT_STEREO
VLC envelope_quant_index[13]
int block_align
number of bytes per packet if constant and known or 0 Used by some WAV based audio codecs...
int av_get_channel_layout_nb_channels(uint64_t channel_layout)
Return the number of channels in the channel layout.
static const uint8_t *const ccpl_huffbits[5]
static const int vhsize_tab[7]
static const float quant_centroid_tab[7][14]
void(* imlt_window)(struct cook *q, float *buffer1, cook_gains *gains_ptr, float *previous_buffer)
static void imlt_gain(COOKContext *q, float *inbuffer, cook_gains *gains_ptr, float *previous_buffer)
The modulated lapped transform, this takes transform coefficients and transforms them into timedomain...
static av_cold void init_gain_table(COOKContext *q)
void void avpriv_request_sample(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message about a missing feature.
enum AVSampleFormat sample_fmt
audio sample format
uint8_t * decoded_bytes_buffer
static int decouple_info(COOKContext *q, COOKSubpacket *p, int *decouple_tab)
function for getting the jointstereo coupling information
float mono_previous_buffer1[1024]
static void decode_vectors(COOKContext *q, COOKSubpacket *p, int *category, int *quant_index_table, float *mlt_buffer)
Fill the mlt_buffer with mlt coefficients.
av_cold void ff_audiodsp_init(AudioDSPContext *c)
static void expand_category(COOKContext *q, int *category, int *category_index)
Expand the category vector.
static av_cold int end(AVCodecContext *avctx)
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
static void interpolate(float *out, float v1, float v2, int size)
#define DECLARE_ALIGNED(n, t, v)
Declare a variable that is aligned in memory.
static int get_bits_count(const GetBitContext *s)
bitstream reader API header.
const float * cplscales[5]
static int decode_subpacket(COOKContext *q, COOKSubpacket *p, const uint8_t *inbuffer, float **outbuffer)
Cook subpacket decoding.
static int cook_decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *avpkt)
static void decode_bytes_and_gain(COOKContext *q, COOKSubpacket *p, const uint8_t *inbuffer, cook_gains *gains_ptr)
First part of subpacket decoding: decode raw stream bytes and read gain info.
#define DECODE_BYTES_PAD1(bytes)
static int get_bits_left(GetBitContext *gb)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
static const int vd_tab[7]
#define init_vlc(vlc, nb_bits, nb_codes,bits, bits_wrap, bits_size,codes, codes_wrap, codes_size,flags)
static const float dither_tab[9]
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
static av_always_inline unsigned int bytestream2_get_bytes_left(GetByteContext *g)
static const uint16_t *const ccpl_huffcodes[5]
float mono_previous_buffer2[1024]
const char * name
Name of the codec implementation.
static int decode_envelope(COOKContext *q, COOKSubpacket *p, int *quant_index_table)
Create the quant index table needed for the envelope.
static const uint8_t offset[127][2]
uint64_t channel_layout
Audio channel layout.
static void saturate_output_float(COOKContext *q, float *out)
Saturate the output signal and interleave.
void(* imdct_calc)(struct FFTContext *s, FFTSample *output, const FFTSample *input)
static const int vhvlcsize_tab[7]
static const uint16_t fc[]
static int unpack_SQVH(COOKContext *q, COOKSubpacket *p, int category, int *subband_coef_index, int *subband_coef_sign)
Unpack the subband_coef_index and subband_coef_sign vectors.
static av_cold int init_cook_mlt(COOKContext *q)
audio channel layout utility functions
static int mono_decode(COOKContext *q, COOKSubpacket *p, float *mlt_buffer)
typedef void(APIENTRY *FF_PFNGLACTIVETEXTUREPROC)(GLenum texture)
static av_cold int cook_decode_init(AVCodecContext *avctx)
Cook initialization.
static av_always_inline int get_vlc2(GetBitContext *s, VLC_TYPE(*table)[2], int bits, int max_depth)
Parse a vlc code.
#define FF_ARRAY_ELEMS(a)
static const uint16_t *const cvh_huffcodes[7]
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
static void interpolate_float(COOKContext *q, float *buffer, int gain_index, int gain_index_next)
the actual requantization of the timedomain samples
Libavcodec external API header.
void(* interpolate)(struct cook *q, float *buffer, int gain_index, int gain_index_next)
AVSampleFormat
Audio sample formats.
static av_cold int init_cook_vlc_tables(COOKContext *q)
int sample_rate
samples per second
void AAC_RENAME() ff_sine_window_init(INTFLOAT *window, int n)
Generate a sine window.
main external API structure.
float mono_mdct_output[2048]
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
static unsigned int av_lfg_get(AVLFG *c)
Get the next random unsigned 32-bit number using an ALFG.
static void dump_cook_context(COOKContext *q)
static unsigned int get_bits1(GetBitContext *s)
void(* decouple)(struct cook *q, COOKSubpacket *p, int subband, float f1, float f2, float *decode_buffer, float *mlt_buffer1, float *mlt_buffer2)
static int joint_decode(COOKContext *q, COOKSubpacket *p, float *mlt_buffer_left, float *mlt_buffer_right)
function for decoding joint stereo data
static av_cold int cook_decode_close(AVCodecContext *avctx)
static float pow2tab[127]
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
float decode_buffer_0[1060]
av_cold void av_lfg_init(AVLFG *c, unsigned int seed)
COOKSubpacket subpacket[MAX_SUBPACKETS]
float decode_buffer_2[1024]
void(* vector_clipf)(float *dst, const float *src, int len, float min, float max)
static float rootpow2tab[127]
static const uint8_t envelope_quant_index_huffbits[13][24]
static const uint8_t *const cvh_huffbits[7]
static int decode_bytes(const uint8_t *inbuffer, uint8_t *out, int bytes)
Cook indata decoding, every 32 bits are XORed with 0x37c511f2.
static void scalar_dequant_float(COOKContext *q, int index, int quant_index, int *subband_coef_index, int *subband_coef_sign, float *mlt_p)
The real requantization of the mltcoefs.
common internal api header.
static int get_unary(GetBitContext *gb, int stop, int len)
Get unary code of limited length.
#define AV_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
static const int invradix_tab[7]
int channels
number of audio channels
VLC_TYPE(* table)[2]
code, bits
static const struct twinvq_data tab
static enum AVSampleFormat sample_fmts[]
static void decode_gain_info(GetBitContext *gb, int *gaininfo)
Fill the gain array for the timedomain quantization.
static int decode(AVCodecContext *avctx, AVFrame *frame, int *got_frame, AVPacket *pkt)
#define av_malloc_array(a, b)
#define FFSWAP(type, a, b)
static void imlt_window_float(COOKContext *q, float *inbuffer, cook_gains *gains_ptr, float *previous_buffer)
Apply transform window, overlap buffers.
static void decouple_float(COOKContext *q, COOKSubpacket *p, int subband, float f1, float f2, float *decode_buffer, float *mlt_buffer1, float *mlt_buffer2)
function decouples a pair of signals from a single signal via multiplication.
static const int vpr_tab[7]
uint8_t ** extended_data
pointers to the data planes/channels.
#define AV_CH_LAYOUT_MONO
This structure stores compressed data.
void ff_free_vlc(VLC *vlc)
int nb_samples
number of audio samples (per channel) described by this frame
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
unsigned int channel_mask
Cook AKA RealAudio G2 compatible decoder data.
void(* saturate_output)(struct cook *q, float *out)