22 #ifndef AVCODEC_AACENC_H
23 #define AVCODEC_AACENC_H
59 int win,
int group_len,
const float lambda);
61 int scale_idx,
int cb,
const float lambda,
int rtz);
132 int size,
int is_signed,
int maxval,
const float Q34,
133 const float rounding);
void(* search_for_pns)(struct AACEncContext *s, AVCodecContext *avctx, SingleChannelElement *sce)
enum RawDataBlockType cur_type
channel group type cur_channel belongs to
AACQuantizeBandCostCacheEntry quantize_band_cost_cache[256][128]
memoization area for quantize_band_cost
void(* encode_ltp_info)(struct AACEncContext *s, SingleChannelElement *sce, int common_window)
AACCoefficientsEncoder * coder
int lambda_count
count(lambda), for Qvg reporting
void(* search_for_tns)(struct AACEncContext *s, SingleChannelElement *sce)
static double cb(void *priv, double x, double y)
AACEncOptions options
encoding options
void ff_quantize_band_cost_cache_init(struct AACEncContext *s)
void(* quant_bands)(int *out, const float *in, const float *scaled, int size, int is_signed, int maxval, const float Q34, const float rounding)
LPCContext lpc
used by TNS
void ff_aac_coder_init_mips(AACEncContext *c)
int samplerate_index
MPEG-4 samplerate index.
const uint8_t * chan_map
channel configuration map
int qcoefs[96]
quantized coefficients
#define DECLARE_ALIGNED(n, t, v)
Declare a variable that is aligned in memory.
context used by psychoacoustic model
int profile
copied from avctx
float * planar_samples[8]
saved preprocessed input
void(* set_special_band_scalefactors)(struct AACEncContext *s, SingleChannelElement *sce)
void(* search_for_quantizers)(AVCodecContext *avctx, struct AACEncContext *s, SingleChannelElement *sce, const float lambda)
struct AACEncContext::@43 buffer
void(* search_for_is)(struct AACEncContext *s, AVCodecContext *avctx, ChannelElement *cpe)
void(* abs_pow34)(float *out, const float *in, const int size)
int cur_channel
current channel for coder context
int last_frame_pb_count
number of bits for the previous frame
void(* apply_tns_filt)(struct AACEncContext *s, SingleChannelElement *sce)
typedef void(APIENTRY *FF_PFNGLACTIVETEXTUREPROC)(GLenum texture)
void(* quantize_and_encode_band)(struct AACEncContext *s, PutBitContext *pb, const float *in, float *out, int size, int scale_idx, int cb, const float lambda, int rtz)
int channels
channel count
void(* encode_main_pred)(struct AACEncContext *s, SingleChannelElement *sce)
AAC definitions and structures.
void(* search_for_ltp)(struct AACEncContext *s, SingleChannelElement *sce, int common_window)
FFTContext mdct128
short (128 samples) frame transform context
void(* search_for_pred)(struct AACEncContext *s, SingleChannelElement *sce)
void(* adjust_common_pred)(struct AACEncContext *s, ChannelElement *cpe)
void ff_aac_dsp_init_x86(AACEncContext *s)
Libavcodec external API header.
void(* search_for_ms)(struct AACEncContext *s, ChannelElement *cpe)
void(* apply_main_pred)(struct AACEncContext *s, SingleChannelElement *sce)
main external API structure.
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31))))#defineSET_CONV_FUNC_GROUP(ofmt, ifmt) staticvoidset_generic_function(AudioConvert *ac){}voidff_audio_convert_free(AudioConvert **ac){if(!*ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, intsample_rate, intapply_map){AudioConvert *ac;intin_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) returnNULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method!=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt)>2){ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc){av_free(ac);returnNULL;}returnac;}in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar){ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar?ac->channels:1;}elseif(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;elseac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);returnac;}intff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){intuse_generic=1;intlen=in->nb_samples;intp;if(ac->dc){av_log(ac->avr, AV_LOG_TRACE,"%dsamples-audio_convert:%sto%s(dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));returnff_convert_dither(ac-> in
void(* encode_window_bands_info)(struct AACEncContext *s, SingleChannelElement *sce, int win, int group_len, const float lambda)
void(* mark_pns)(struct AACEncContext *s, AVCodecContext *avctx, SingleChannelElement *sce)
float lambda_sum
sum(lambda), for Qvg reporting
Describe the class of an AVClass context structure.
uint16_t quantize_band_cost_cache_generation
struct FFPsyPreprocessContext * psypp
void(* encode_tns_info)(struct AACEncContext *s, SingleChannelElement *sce)
AACCoefficientsEncoder ff_aac_coders[]
Single Channel Element - used for both SCE and LFE elements.
ChannelElement * cpe
channel elements
void(* ltp_insert_new_frame)(struct AACEncContext *s)
channel element - generic struct for SCE/CPE/CCE/LFE
FFTContext mdct1024
long (1024 samples) frame transform context
void(* adjust_common_ltp)(struct AACEncContext *s, ChannelElement *cpe)
float scoefs[1024]
scaled coefficients
void(* update_ltp)(struct AACEncContext *s, SingleChannelElement *sce)