49 #define BITSTREAM_WRITER_LE
52 #define POW_TABLE_SIZE (1<<11)
53 #define POW_TABLE_OFFSET 3
54 #define OPT_SIZE ((1<<15) + 3000)
72 0, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 4, 4,
73 5, 5, 5, 6, 7, 7, 8, 8, 9, 10, 11, 11, 12, 13, 13, 14,
74 15, 15, 16, 17, 17, 18, 19, 19, 20, 21, 22, 22, 23, 24, 25, 26,
75 27, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 37, 38, 39, 40,
76 41, 41, 42, 43, 44, 45, 45, 46, 47, 48, 49, 50, 51, 52, 52, 53,
77 54, 55, 55, 56, 57, 57, 58, 59, 59, 60, 60, 60, 61, 61, 61, 62,
81 0, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 4, 4,
82 4, 5, 5, 5, 6, 6, 7, 7, 8, 8, 9, 10, 10, 11, 11, 12,
83 13, 13, 14, 15, 16, 17, 17, 18, 19, 19, 20, 21, 21, 22, 22, 23,
84 23, 24, 24, 25, 25, 25, 26, 26, 26, 26, 27, 27, 27, 27, 27, 28,
85 28, 28, 28, 28, 28, 29, 29, 29, 29, 29, 29, 29, 29, 30,
95 0, 1, 1, 2, 2, 3, 3, 4, 5, 6, 7, 8, 9, 10, 11, 11,
98 0, 1, 1, 2, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 8,
99 8, 9, 10, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22,
100 22, 23, 23, 24, 24, 25, 25, 26, 26, 27, 27, 28, 28, 29, 29, 29,
103 0, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 3,
104 4, 4, 4, 5, 5, 5, 6, 6, 7, 7, 7, 8, 8, 9, 9, 9,
105 10, 10, 11, 11, 11, 12, 12, 13, 13, 13, 13, 14, 14, 14, 15, 15,
106 15, 15, 16, 16, 16, 17, 17, 17, 18, 18, 18, 19, 19, 20, 20, 20,
107 21, 21, 22, 22, 23, 23, 24, 25, 26, 26, 27, 28, 29, 30, 31, 32,
108 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 42, 43, 44, 44, 45, 45,
109 46, 47, 47, 48, 48, 49, 49, 50, 50, 50, 51, 51, 51, 52, 52, 52,
110 53, 53, 53, 54, 54, 54, 55, 55, 55, 56, 56, 56, 57, 57, 57, 57,
111 58, 58, 58, 58, 59, 59, 59, 59, 60, 60, 60, 60, 60, 61, 61, 61,
115 static const float quant_lut_mul[7] = { 0.0, 0.0, 2.0, 2.0, 5.0, 12.0, 36.6 };
116 static const float quant_lut_add[7] = { 0.0, 0.0, 2.0, 7.0, 21.0, 56.0, 157.0 };
164 av_log(avctx,
AV_LOG_ERROR,
"Nellymoser works only with 8000, 16000, 11025, 22050 and 44100 sample rate\n");
187 for (i = 1; i < 513; i++) {
188 double tmp =
exp2(-i / 2048.0);
210 #define find_best(val, table, LUT, LUT_add, LUT_size) \
212 LUT[av_clip ((lrintf(val) >> 8) + LUT_add, 0, LUT_size - 1)]; \
213 if (fabs(val - table[best_idx]) > fabs(val - table[best_idx + 1])) \
218 int band, best_idx, power_idx = 0;
219 float power_candidate;
223 idx_table[0] = best_idx;
227 power_candidate = cand[
band] - power_idx;
229 idx_table[
band] = best_idx;
243 int i, j,
band, best_idx;
244 float power_candidate, best_val;
253 for (i = 0; i < 64; i++) {
255 path[0][ff_nelly_init_table[i]] = i;
261 int idx_min, idx_max, idx;
262 power_candidate = cand[
band];
263 for (q = 1000; !c && q <
OPT_SIZE; q <<= 2) {
264 idx_min =
FFMAX(0, cand[band] - q);
265 idx_max =
FFMIN(OPT_SIZE, cand[band - 1] + q);
266 for (i =
FFMAX(0, cand[band - 1] - q); i <
FFMIN(OPT_SIZE, cand[band - 1] + q); i++) {
267 if (
isinf(opt[band - 1][i]) )
269 for (j = 0; j < 32; j++) {
273 if (idx >= idx_min) {
274 tmp = opt[band - 1][i] +
distance(idx, power_candidate, band);
275 if (opt[band][idx] > tmp) {
276 opt[
band][idx] = tmp;
289 band = NELLY_BANDS - 1;
291 if (best_val > opt[band][i]) {
292 best_val = opt[
band][i];
296 for (band = NELLY_BANDS - 1; band >= 0; band--) {
297 idx_table[
band] = path[
band][best_idx];
313 int i, j,
band,
block, best_idx, power_idx = 0;
314 float power_val,
coeff, coeff_sum;
331 log2(
FFMAX(1.0, coeff_sum / (ff_nelly_band_sizes_table[band] << 7))) * 1024.0;
359 for (block = 0; block < 2; block++) {
370 if (fabs(coeff - table[best_idx]) > fabs(coeff - table[best_idx + 1]))
423 .
name =
"nellymoser",
void ff_af_queue_remove(AudioFrameQueue *afq, int nb_samples, int64_t *pts, int64_t *duration)
Remove frame(s) from the queue.
This structure describes decoded (raw) audio or video data.
static int encode_frame(AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame, int *got_packet_ptr)
void(* mdct_calc)(struct FFTContext *s, FFTSample *output, const FFTSample *input)
static void put_bits(Jpeg2000EncoderContext *s, int val, int n)
put n times val bit
static av_cold int init(AVCodecContext *avctx)
static av_cold int encode_end(AVCodecContext *avctx)
static const float quant_lut_add[7]
float mdct_out[NELLY_SAMPLES]
#define DECLARE_ALIGNED(n, t, v)
static void apply_mdct(NellyMoserEncodeContext *s)
void(* vector_fmul_reverse)(float *dst, const float *src0, const float *src1, int len)
Calculate the entry wise product of two vectors of floats, and store the result in a vector of floats...
const float ff_nelly_dequantization_table[127]
#define NELLY_DETAIL_BITS
#define AV_CODEC_CAP_DELAY
Encoder or decoder requires flushing with NULL input at the end in order to give the complete and cor...
const uint16_t ff_nelly_init_table[64]
static void get_exponent_dynamic(NellyMoserEncodeContext *s, float *cand, int *idx_table)
static void get_exponent_greedy(NellyMoserEncodeContext *s, float *cand, int *idx_table)
av_cold void ff_af_queue_init(AVCodecContext *avctx, AudioFrameQueue *afq)
Initialize AudioFrameQueue.
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
static float pow_table[POW_TABLE_SIZE]
pow(2, -i / 2048.0 - 3.0);
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
static uint8_t * put_bits_ptr(PutBitContext *s)
Return the pointer to the byte where the bitstream writer will put the next bit.
void(* vector_fmul)(float *dst, const float *src0, const float *src1, int len)
Calculate the entry wise product of two vectors of floats and store the result in a vector of floats...
static const struct endianess table[]
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
int initial_padding
Audio only.
int flags
AV_CODEC_FLAG_*.
static av_cold int encode_init(AVCodecContext *avctx)
const char * name
Name of the codec implementation.
int ff_af_queue_add(AudioFrameQueue *afq, const AVFrame *f)
Add a frame to the queue.
static int put_bits_count(PutBitContext *s)
static float distance(float x, float y, int band)
float in_buff[NELLY_SAMPLES]
uint8_t(* path)[OPT_SIZE]
#define AV_CODEC_FLAG_BITEXACT
Use only bitexact stuff (except (I)DCT).
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
#define AV_CODEC_CAP_SMALL_LAST_FRAME
Codec can be fed a final frame with a smaller size.
const uint8_t ff_nelly_band_sizes_table[NELLY_BANDS]
#define NELLY_HEADER_BITS
AVCodec ff_nellymoser_encoder
int frame_size
Number of samples per channel in an audio frame.
static const uint8_t quant_lut[230]
Libavcodec external API header.
AVSampleFormat
Audio sample formats.
int sample_rate
samples per second
static const uint8_t sf_lut[96]
main external API structure.
float buf[3 *NELLY_BUF_LEN]
sample buffer
#define FF_COMPLIANCE_NORMAL
static const uint8_t quant_lut_offset[8]
#define find_best(val, table, LUT, LUT_add, LUT_size)
av_cold AVFloatDSPContext * avpriv_float_dsp_alloc(int bit_exact)
Allocate a float DSP context.
int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int64_t min_size)
Check AVPacket size and/or allocate data.
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
common internal api header.
static void flush_put_bits(PutBitContext *s)
Pad the end of the output stream with zeros.
common internal and external API header
static void init_put_bits(PutBitContext *s, uint8_t *buffer, int buffer_size)
Initialize the PutBitContext s.
static void encode_block(NellyMoserEncodeContext *s, unsigned char *output, int output_size)
Encode NELLY_SAMPLES samples.
int trellis
trellis RD quantization
int channels
number of audio channels
const int16_t ff_nelly_delta_table[32]
static const double coeff[2][5]
void ff_af_queue_close(AudioFrameQueue *afq)
Close AudioFrameQueue.
static enum AVSampleFormat sample_fmts[]
void ff_nelly_get_sample_bits(const float *buf, int *bits)
The 3 alphanumeric copyright notices are md5summed they are from the original implementors.
This structure stores compressed data.
static const float quant_lut_mul[7]
int nb_samples
number of audio samples (per channel) described by this frame
int strict_std_compliance
strictly follow the standard (MPEG4, ...).
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
void AAC_RENAME() ff_init_ff_sine_windows(int index)
initialize the specified entry of ff_sine_windows
static const uint8_t sf_delta_lut[78]