#include "libavutil/opt.h"
#include "avcodec.h"
#include "put_bits.h"
#include "dsputil.h"
#include "mpeg4audio.h"
#include "kbdwin.h"
#include "sinewin.h"
#include "aac.h"
#include "aactab.h"
#include "aacenc.h"
#include "psymodel.h"
Go to the source code of this file.
Defines | |
#define | AAC_MAX_CHANNELS 6 |
#define | ERROR_IF(cond,...) |
#define | WINDOW_FUNC(type) static void apply_ ##type ##_window(DSPContext *dsp, SingleChannelElement *sce, const float *audio) |
#define | AACENC_FLAGS AV_OPT_FLAG_ENCODING_PARAM | AV_OPT_FLAG_AUDIO_PARAM |
Functions | |
static void | put_audio_specific_config (AVCodecContext *avctx) |
Make AAC audio config object. | |
WINDOW_FUNC (only_long) | |
WINDOW_FUNC (long_start) | |
WINDOW_FUNC (long_stop) | |
WINDOW_FUNC (eight_short) | |
static void | apply_window_and_mdct (AACEncContext *s, SingleChannelElement *sce, float *audio) |
static void | put_ics_info (AACEncContext *s, IndividualChannelStream *info) |
Encode ics_info element. | |
static void | encode_ms_info (PutBitContext *pb, ChannelElement *cpe) |
Encode MS data. | |
static void | adjust_frame_information (AACEncContext *apc, ChannelElement *cpe, int chans) |
Produce integer coefficients from scalefactors provided by the model. | |
static void | encode_band_info (AACEncContext *s, SingleChannelElement *sce) |
Encode scalefactor band coding type. | |
static void | encode_scale_factors (AVCodecContext *avctx, AACEncContext *s, SingleChannelElement *sce) |
Encode scalefactors. | |
static void | encode_pulses (AACEncContext *s, Pulse *pulse) |
Encode pulse data. | |
static void | encode_spectral_coeffs (AACEncContext *s, SingleChannelElement *sce) |
Encode spectral coefficients processed by psychoacoustic model. | |
static int | encode_individual_channel (AVCodecContext *avctx, AACEncContext *s, SingleChannelElement *sce, int common_window) |
Encode one channel of audio data. | |
static void | put_bitstream_info (AVCodecContext *avctx, AACEncContext *s, const char *name) |
Write some auxiliary information about the created AAC file. | |
static void | deinterleave_input_samples (AACEncContext *s, const float *samples) |
static int | aac_encode_frame (AVCodecContext *avctx, uint8_t *frame, int buf_size, void *data) |
static av_cold int | aac_encode_end (AVCodecContext *avctx) |
static av_cold int | dsp_init (AVCodecContext *avctx, AACEncContext *s) |
static av_cold int | alloc_buffers (AVCodecContext *avctx, AACEncContext *s) |
static av_cold int | aac_encode_init (AVCodecContext *avctx) |
Variables | |
float | ff_aac_pow34sf_tab [428] |
static const uint8_t | swb_size_1024_96 [] |
static const uint8_t | swb_size_1024_64 [] |
static const uint8_t | swb_size_1024_48 [] |
static const uint8_t | swb_size_1024_32 [] |
static const uint8_t | swb_size_1024_24 [] |
static const uint8_t | swb_size_1024_16 [] |
static const uint8_t | swb_size_1024_8 [] |
static const uint8_t * | swb_size_1024 [] |
static const uint8_t | swb_size_128_96 [] |
static const uint8_t | swb_size_128_48 [] |
static const uint8_t | swb_size_128_24 [] |
static const uint8_t | swb_size_128_16 [] |
static const uint8_t | swb_size_128_8 [] |
static const uint8_t * | swb_size_128 [] |
static const uint8_t | aac_chan_configs [6][5] |
default channel configurations | |
static const uint8_t | aac_chan_maps [AAC_MAX_CHANNELS][AAC_MAX_CHANNELS] |
Table to remap channels from Libav's default order to AAC order. | |
static void(*const | apply_window [4])(DSPContext *dsp, SingleChannelElement *sce, const float *audio) |
static const AVOption | aacenc_options [] |
static const AVClass | aacenc_class |
AVCodec | ff_aac_encoder |
Definition in file aacenc.c.
#define AAC_MAX_CHANNELS 6 |
#define AACENC_FLAGS AV_OPT_FLAG_ENCODING_PARAM | AV_OPT_FLAG_AUDIO_PARAM |
#define ERROR_IF | ( | cond, | |||
... | ) |
Value:
if (cond) { \ av_log(avctx, AV_LOG_ERROR, __VA_ARGS__); \ return AVERROR(EINVAL); \ }
Definition at line 49 of file aacenc.c.
Referenced by aac_encode_init().
#define WINDOW_FUNC | ( | type | ) | static void apply_ ##type ##_window(DSPContext *dsp, SingleChannelElement *sce, const float *audio) |
static av_cold int aac_encode_end | ( | AVCodecContext * | avctx | ) | [static] |
static int aac_encode_frame | ( | AVCodecContext * | avctx, | |
uint8_t * | frame, | |||
int | buf_size, | |||
void * | data | |||
) | [static] |
static av_cold int aac_encode_init | ( | AVCodecContext * | avctx | ) | [static] |
static void adjust_frame_information | ( | AACEncContext * | apc, | |
ChannelElement * | cpe, | |||
int | chans | |||
) | [static] |
Produce integer coefficients from scalefactors provided by the model.
Definition at line 298 of file aacenc.c.
Referenced by aac_encode_frame().
static av_cold int alloc_buffers | ( | AVCodecContext * | avctx, | |
AACEncContext * | s | |||
) | [static] |
static void apply_window_and_mdct | ( | AACEncContext * | s, | |
SingleChannelElement * | sce, | |||
float * | audio | |||
) | [static] |
Definition at line 243 of file aacenc.c.
Referenced by aac_encode_frame(), encode_superframe(), and vorbis_encode_frame().
static void deinterleave_input_samples | ( | AACEncContext * | s, | |
const float * | samples | |||
) | [static] |
static av_cold int dsp_init | ( | AVCodecContext * | avctx, | |
AACEncContext * | s | |||
) | [static] |
static void encode_band_info | ( | AACEncContext * | s, | |
SingleChannelElement * | sce | |||
) | [static] |
Encode scalefactor band coding type.
Definition at line 360 of file aacenc.c.
Referenced by encode_individual_channel().
static int encode_individual_channel | ( | AVCodecContext * | avctx, | |
AACEncContext * | s, | |||
SingleChannelElement * | sce, | |||
int | common_window | |||
) | [static] |
Encode one channel of audio data.
Definition at line 437 of file aacenc.c.
Referenced by aac_encode_frame().
static void encode_ms_info | ( | PutBitContext * | pb, | |
ChannelElement * | cpe | |||
) | [static] |
Encode MS data.
Definition at line 284 of file aacenc.c.
Referenced by aac_encode_frame().
static void encode_pulses | ( | AACEncContext * | s, | |
Pulse * | pulse | |||
) | [static] |
Encode pulse data.
Definition at line 393 of file aacenc.c.
Referenced by encode_individual_channel().
static void encode_scale_factors | ( | AVCodecContext * | avctx, | |
AACEncContext * | s, | |||
SingleChannelElement * | sce | |||
) | [static] |
Encode scalefactors.
Definition at line 371 of file aacenc.c.
Referenced by encode_individual_channel().
static void encode_spectral_coeffs | ( | AACEncContext * | s, | |
SingleChannelElement * | sce | |||
) | [static] |
Encode spectral coefficients processed by psychoacoustic model.
Definition at line 412 of file aacenc.c.
Referenced by encode_individual_channel().
static void put_audio_specific_config | ( | AVCodecContext * | avctx | ) | [static] |
Make AAC audio config object.
Definition at line 162 of file aacenc.c.
Referenced by aac_encode_init().
static void put_bitstream_info | ( | AVCodecContext * | avctx, | |
AACEncContext * | s, | |||
const char * | name | |||
) | [static] |
Write some auxiliary information about the created AAC file.
Definition at line 456 of file aacenc.c.
Referenced by aac_encode_frame().
static void put_ics_info | ( | AACEncContext * | s, | |
IndividualChannelStream * | info | |||
) | [static] |
Encode ics_info element.
Definition at line 263 of file aacenc.c.
Referenced by aac_encode_frame(), and encode_individual_channel().
const uint8_t aac_chan_configs[6][5] [static] |
const uint8_t aac_chan_maps[AAC_MAX_CHANNELS][AAC_MAX_CHANNELS] [static] |
Initial value:
{ { 0 }, { 0, 1 }, { 2, 0, 1 }, { 2, 0, 1, 3 }, { 2, 0, 1, 3, 4 }, { 2, 0, 1, 4, 5, 3 }, }
Definition at line 149 of file aacenc.c.
Referenced by deinterleave_input_samples().
const AVClass aacenc_class [static] |
Initial value:
{ "AAC encoder", av_default_item_name, aacenc_options, LIBAVUTIL_VERSION_INT, }
const AVOption aacenc_options[] [static] |
Initial value:
{ {"stereo_mode", "Stereo coding method", 0x42, AV_OPT_TYPE_INT, {.dbl = 0}, -1, 1, AACENC_FLAGS, "stereo_mode"}, {"auto", "Selected by the Encoder", 0, AV_OPT_TYPE_CONST, {.dbl = -1 }, INT_MIN, INT_MAX, AACENC_FLAGS, "stereo_mode"}, {"ms_off", "Disable Mid/Side coding", 0, AV_OPT_TYPE_CONST, {.dbl = 0 }, INT_MIN, INT_MAX, AACENC_FLAGS, "stereo_mode"}, {"ms_force", "Force Mid/Side for the whole frame if possible", 0, AV_OPT_TYPE_CONST, {.dbl = 1 }, INT_MIN, INT_MAX, AACENC_FLAGS, "stereo_mode"}, {"aac_coder", "", 0x42, AV_OPT_TYPE_INT, {.dbl = 2}, 0, AAC_CODER_NB-1, AACENC_FLAGS}, {NULL} }
void(*const apply_window[4])(DSPContext *dsp, SingleChannelElement *sce, const float *audio) [static] |
Initial value:
{ [ONLY_LONG_SEQUENCE] = apply_only_long_window, [LONG_START_SEQUENCE] = apply_long_start_window, [EIGHT_SHORT_SEQUENCE] = apply_eight_short_window, [LONG_STOP_SEQUENCE] = apply_long_stop_window }
Referenced by apply_mdct(), apply_window_and_mdct(), apply_window_mp3(), and ff_mpa_synth_filter_TMPL().
Initial value:
{ .name = "aac", .type = AVMEDIA_TYPE_AUDIO, .id = CODEC_ID_AAC, .priv_data_size = sizeof(AACEncContext), .init = aac_encode_init, .encode = aac_encode_frame, .close = aac_encode_end, .capabilities = CODEC_CAP_SMALL_LAST_FRAME | CODEC_CAP_DELAY | CODEC_CAP_EXPERIMENTAL, .sample_fmts = (const enum AVSampleFormat[]){AV_SAMPLE_FMT_FLT,AV_SAMPLE_FMT_NONE}, .long_name = NULL_IF_CONFIG_SMALL("Advanced Audio Coding"), .priv_class = &aacenc_class, }
float ff_aac_pow34sf_tab[428] |
Definition at line 55 of file aacenc.c.
Referenced by aac_encode_init(), and quantize_and_encode_band_cost_template().
const uint8_t* swb_size_1024[] [static] |
Initial value:
{ swb_size_1024_96, swb_size_1024_96, swb_size_1024_64, swb_size_1024_48, swb_size_1024_48, swb_size_1024_32, swb_size_1024_24, swb_size_1024_24, swb_size_1024_16, swb_size_1024_16, swb_size_1024_16, swb_size_1024_8 }
Definition at line 100 of file aacenc.c.
Referenced by aac_encode_init().
const uint8_t swb_size_1024_16[] [static] |
const uint8_t swb_size_1024_24[] [static] |
const uint8_t swb_size_1024_32[] [static] |
const uint8_t swb_size_1024_48[] [static] |
const uint8_t swb_size_1024_64[] [static] |
const uint8_t swb_size_1024_8[] [static] |
const uint8_t swb_size_1024_96[] [static] |
const uint8_t* swb_size_128[] [static] |
Initial value:
{ swb_size_128_96, swb_size_128_96, swb_size_128_96, swb_size_128_48, swb_size_128_48, swb_size_128_48, swb_size_128_24, swb_size_128_24, swb_size_128_16, swb_size_128_16, swb_size_128_16, swb_size_128_8 }
Definition at line 127 of file aacenc.c.
Referenced by aac_encode_init().
const uint8_t swb_size_128_16[] [static] |
const uint8_t swb_size_128_24[] [static] |
const uint8_t swb_size_128_48[] [static] |
const uint8_t swb_size_128_8[] [static] |
const uint8_t swb_size_128_96[] [static] |