58 #define MONO 0x1000001
59 #define STEREO 0x1000002
60 #define JOINT_STEREO 0x1000003
61 #define MC_COOK 0x2000000 // multichannel Cook, not supported
63 #define SUBBAND_SIZE 20
64 #define MAX_SUBPACKETS 5
90 float mono_previous_buffer1[1024];
91 float mono_previous_buffer2[1024];
107 int *subband_coef_index,
int *subband_coef_sign,
114 float *decode_buffer,
115 float *mlt_buffer1,
float *mlt_buffer2);
118 cook_gains *gains_ptr,
float *previous_buffer);
121 int gain_index,
int gain_index_next);
172 for (i = -63; i < 64; i++) {
183 for (i = 0; i < 23; i++)
194 for (i = 0; i < 13; i++) {
200 for (i = 0; i < 7; i++) {
229 for (j = 0; j < mlt_size; j++)
238 av_log2(mlt_size) + 1);
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)))
281 static inline int decode_bytes(
const uint8_t *inbuffer, uint8_t *out,
int 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];
324 for (i = 0; i < 13; i++)
326 for (i = 0; i < 7; i++)
358 gaininfo[i++] = gain;
371 int *quant_index_table)
375 quant_index_table[0] =
get_bits(&q->
gb, 6) - 6;
391 quant_index_table[i] = quant_index_table[i - 1] + j - 12;
392 if (quant_index_table[i] > 63 || quant_index_table[i] < -63) {
394 "Invalid quantizer %d at position %d, outside [-63, 63] range\n",
395 quant_index_table[i], i);
412 int *category,
int *category_index)
414 int exp_idx, bias, tmpbias1, tmpbias2, bits_left, num_bits,
index,
v, i, j;
418 int tmp_categorize_array[128 * 2];
430 memset(&exp_index1, 0,
sizeof(exp_index1));
431 memset(&exp_index2, 0,
sizeof(exp_index2));
432 memset(&tmp_categorize_array, 0,
sizeof(tmp_categorize_array));
437 for (i = 32; i > 0; i = i / 2) {
441 exp_idx = av_clip((i - quant_index_table[index] + bias) / 2, 0, 7);
445 if (num_bits >= bits_left - 32)
452 exp_idx = av_clip((bias - quant_index_table[i]) / 2, 0, 7);
454 exp_index1[i] = exp_idx;
455 exp_index2[i] = exp_idx;
457 tmpbias1 = tmpbias2 = num_bits;
460 if (tmpbias1 + tmpbias2 > 2 * bits_left) {
464 if (exp_index1[i] < 7) {
465 v = (-2 * exp_index1[i]) - quant_index_table[i] + bias;
474 tmp_categorize_array[tmp_categorize_array1_idx++] =
index;
482 if (exp_index2[i] > 0) {
483 v = (-2 * exp_index2[i]) - quant_index_table[i] + bias;
492 tmp_categorize_array[--tmp_categorize_array2_idx] =
index;
500 category[i] = exp_index2[i];
503 category_index[i] = tmp_categorize_array[tmp_categorize_array2_idx++];
520 int idx = category_index[i];
537 int *subband_coef_index,
int *subband_coef_sign,
544 if (subband_coef_index[i]) {
546 if (subband_coef_sign[i])
566 int *subband_coef_index,
int *subband_coef_sign)
569 int vlc, vd, tmp, result;
573 for (i = 0; i <
vpr_tab[category]; i++) {
579 for (j = vd - 1; j >= 0; j--) {
581 subband_coef_index[vd * i + j] = vlc - tmp * (
kmax_tab[category] + 1);
584 for (j = 0; j < vd; j++) {
585 if (subband_coef_index[i * vd + j]) {
590 subband_coef_sign[i * vd + j] = 0;
593 subband_coef_sign[i * vd + j] = 0;
610 int *quant_index_table,
float *mlt_buffer)
622 index = category[band];
623 if (category[band] < 7) {
624 if (
unpack_SQVH(q, p, category[band], subband_coef_index, subband_coef_sign)) {
627 category[band + j] = 7;
631 memset(subband_coef_index, 0,
sizeof(subband_coef_index));
632 memset(subband_coef_sign, 0,
sizeof(subband_coef_sign));
635 subband_coef_index, subband_coef_sign,
653 int category_index[128];
654 int quant_index_table[102];
658 memset(&category, 0,
sizeof(category));
659 memset(&category_index, 0,
sizeof(category_index));
664 categorize(q, p, quant_index_table, category, category_index);
681 int gain_index,
int gain_index_next)
685 fc1 =
pow2tab[gain_index + 63];
687 if (gain_index == gain_index_next) {
691 fc2 = q->
gain_table[11 + (gain_index_next - gain_index)];
708 cook_gains *gains_ptr,
float *previous_buffer)
720 inbuffer[i] = inbuffer[i] * fc * q->
mlt_window[i] -
736 cook_gains *gains_ptr,
float *previous_buffer)
745 q->
imlt_window(q, buffer1, gains_ptr, previous_buffer);
748 for (i = 0; i < 8; i++)
749 if (gains_ptr->
now[i] || gains_ptr->
now[i + 1])
751 gains_ptr->
now[i], gains_ptr->
now[i + 1]);
754 memcpy(previous_buffer, buffer0,
772 int length = end - start + 1;
778 for (i = 0; i < length; i++)
781 for (i = 0; i < length; i++)
800 float *decode_buffer,
801 float *mlt_buffer1,
float *mlt_buffer2)
806 mlt_buffer1[SUBBAND_SIZE * subband + j] = f1 * decode_buffer[tmp_idx];
807 mlt_buffer2[SUBBAND_SIZE * subband + j] = f2 * decode_buffer[tmp_idx];
826 const float *cplscale;
828 memset(decouple_tab, 0,
sizeof(decouple_tab));
832 memset(mlt_buffer1, 0, 1024 *
sizeof(*mlt_buffer1));
833 memset(mlt_buffer2, 0, 1024 *
sizeof(*mlt_buffer2));
841 mlt_buffer1[i * 20 + j] = decode_buffer[i * 40 + j];
842 mlt_buffer2[i * 20 + j] = decode_buffer[i * 40 + 20 + j];
851 idx -= decouple_tab[cpl_tmp];
853 f1 = cplscale[decouple_tab[cpl_tmp] + 1];
855 q->
decouple(q, p, i, f1, f2, decode_buffer, mlt_buffer1, mlt_buffer2);
871 const uint8_t *inbuffer,
898 out[chan + q->
nb_channels * j] = av_clipf(output[j], -1.0, 1.0);
915 cook_gains *gains_ptr,
float *previous_buffer,
916 float *out,
int chan)
918 imlt_gain(q, decode_buffer, gains_ptr, previous_buffer);
933 const uint8_t *inbuffer,
float *outbuffer)
935 int sub_packet_size = p->
size;
979 int *got_frame_ptr,
AVPacket *avpkt)
981 const uint8_t *buf = avpkt->
data;
982 int buf_size = avpkt->
size;
989 if (buf_size < avctx->block_align)
1010 "frame subpacket size total > avctx->block_align!\n");
1021 "subpacket[%i] size %i js %i %i block_align %i\n",
1050 #define PRINT(a, b) av_log(q->avctx, AV_LOG_ERROR, " %s = %d\n", a, b);
1075 for (i = 0; i < 32; i++)
1076 if (mask & (1 << i))
1089 const uint8_t *edata_ptr = avctx->
extradata;
1090 const uint8_t *edata_ptr_end = edata_ptr + avctx->
extradata_size;
1093 unsigned int channel_mask = 0;
1098 if (extradata_size <= 0) {
1116 while (edata_ptr < edata_ptr_end) {
1119 if (extradata_size >= 8) {
1123 extradata_size -= 8;
1125 if (extradata_size >= 8) {
1126 bytestream_get_be32(&edata_ptr);
1129 extradata_size -= 8;
1182 if (extradata_size >= 4)
1286 "unknown amount of samples_per_channel = %d\n",
1301 dump_cook_context(q);
VLC envelope_quant_index[13]
static av_cold void init_cplscales_table(COOKContext *q)
float decode_buffer_2[1024]
static const int cplband[51]
void * av_mallocz(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
static void decouple_info(COOKContext *q, COOKSubpacket *p, int *decouple_tab)
function for getting the jointstereo coupling information
static void categorize(COOKContext *q, COOKSubpacket *p, int *quant_index_table, int *category, int *category_index)
Calculate the category and category_index vector.
static const uint16_t envelope_quant_index_huffcodes[13][24]
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
AVFrame * coded_frame
the picture in the bitstream
static const int kmax_tab[7]
static const int expbits_tab[8]
static const float *const cplscales[5]
#define DECLARE_ALIGNED(n, t, v)
static av_cold void init_pow2table(void)
#define FF_ARRAY_ELEMS(a)
#define AV_CH_LAYOUT_STEREO
void(* scalar_dequant)(struct cook *q, int index, int quant_index, int *subband_coef_index, int *subband_coef_sign, float *mlt_p)
int block_align
number of bytes per packet if constant and known or 0 Used by some WAV based audio codecs...
void(* decouple)(struct cook *q, COOKSubpacket *p, int subband, float f1, float f2, float *decode_buffer, float *mlt_buffer1, float *mlt_buffer2)
static const uint8_t *const ccpl_huffbits[5]
static const int vhsize_tab[7]
static const float quant_centroid_tab[7][14]
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 int decode(MimicContext *ctx, int quality, int num_coeffs, int is_iframe)
static av_cold void init_gain_table(COOKContext *q)
int numvector_size
1 << log2_numvector_size;
enum AVSampleFormat sample_fmt
audio sample format
static const float * maybe_reformat_buffer32(COOKContext *q, const float *ptr, int n)
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.
static void expand_category(COOKContext *q, int *category, int *category_index)
Expand the category vector.
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
cook_gains gains1
gain buffers
static int get_bits_count(const GetBitContext *s)
bitstream reader API header.
static int cook_decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *avpkt)
Cook frame decoding.
static int init(AVCodecParserContext *s)
audio conversion routines
#define CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
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 const int vd_tab[7]
void av_free(void *ptr)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc(). ...
static const uint16_t mask[17]
static const float dither_tab[9]
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
static const uint16_t *const ccpl_huffcodes[5]
static void saturate_output_float(COOKContext *q, int chan, float *out)
Saturate the output signal and interleave.
void av_log(void *avcl, int level, const char *fmt,...)
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 void mlt_compensate_output(COOKContext *q, float *decode_buffer, cook_gains *gains_ptr, float *previous_buffer, float *out, int chan)
Final part of subpacket decoding: Apply modulated lapped transform, gain compensation, clip and convert to integer.
uint64_t channel_layout
Audio channel layout.
void(* imdct_calc)(struct FFTContext *s, FFTSample *output, const FFTSample *input)
static const int vhvlcsize_tab[7]
const float * cplscales[5]
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.
int bit_rate
the average bitrate
static av_cold int init_cook_mlt(COOKContext *q)
COOKSubpacket subpacket[MAX_SUBPACKETS]
static int mono_decode(COOKContext *q, COOKSubpacket *p, float *mlt_buffer)
function for decoding mono data
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame)
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.
float decode_buffer_1[1024]
static av_cold int cook_count_channels(unsigned int mask)
void(* imlt_window)(struct cook *q, float *buffer1, cook_gains *gains_ptr, float *previous_buffer)
static const uint16_t *const cvh_huffcodes[7]
void ff_sine_window_init(float *window, int n)
Generate a sine window.
#define AVERROR_PATCHWELCOME
Not yet implemented in Libav, patches welcome.
static void interpolate_float(COOKContext *q, float *buffer, int gain_index, int gain_index_next)
the actual requantization of the timedomain samples
static av_cold int init_cook_vlc_tables(COOKContext *q)
int sample_rate
samples per second
void av_log_ask_for_sample(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message asking for a sample.
main external API structure.
static void(WINAPI *cond_broadcast)(pthread_cond_t *cond)
static void close(AVCodecParserContext *s)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
#define init_vlc(vlc, nb_bits, nb_codes,bits, bits_wrap, bits_size,codes, codes_wrap, codes_size,flags)
static unsigned int av_lfg_get(AVLFG *c)
Get the next random unsigned 32-bit number using an ALFG.
static unsigned int get_bits1(GetBitContext *s)
void * av_malloc(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
static av_cold int cook_decode_close(AVCodecContext *avctx)
Cook uninit.
void(* interpolate)(struct cook *q, float *buffer, int gain_index, int gain_index_next)
static float pow2tab[127]
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
#define FF_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
static float rootpow2tab[127]
static const uint8_t envelope_quant_index_huffbits[13][24]
static const uint8_t *const cvh_huffbits[7]
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
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.
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
void av_cold av_lfg_init(AVLFG *c, unsigned int seed)
static const int invradix_tab[7]
int channels
number of audio channels
VLC_TYPE(* table)[2]
code, bits
static const struct @46 tab
TwinVQ codebooks.
float mono_mdct_output[2048]
void(* saturate_output)(struct cook *q, int chan, float *out)
static void decode_gain_info(GetBitContext *gb, int *gaininfo)
Fill the gain array for the timedomain quantization.
void avcodec_get_frame_defaults(AVFrame *pic)
Set the fields of the given AVFrame to default values.
#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)
static const int vpr_tab[7]
#define AV_CH_LAYOUT_MONO
void ff_free_vlc(VLC *vlc)
int nb_samples
number of audio samples (per channel) described by this frame
unsigned int channel_mask
float decode_buffer_0[1060]
Cook AKA RealAudio G2 compatible decoderdata.
static int joint_decode(COOKContext *q, COOKSubpacket *p, float *mlt_buffer1, float *mlt_buffer2)
function for decoding joint stereo data
static int decode_subpacket(COOKContext *q, COOKSubpacket *p, const uint8_t *inbuffer, float *outbuffer)
Cook subpacket decoding.
uint8_t * decoded_bytes_buffer