FFmpeg  4.3
Data Structures | Macros | Functions | Variables
alacenc.c File Reference
#include "libavutil/opt.h"
#include "avcodec.h"
#include "put_bits.h"
#include "internal.h"
#include "lpc.h"
#include "mathops.h"
#include "alac_data.h"

Go to the source code of this file.

Data Structures

struct  RiceContext
 
struct  AlacLPCContext
 
struct  AlacEncodeContext
 

Macros

#define DEFAULT_FRAME_SIZE   4096
 
#define ALAC_EXTRADATA_SIZE   36
 
#define ALAC_FRAME_HEADER_SIZE   55
 
#define ALAC_FRAME_FOOTER_SIZE   3
 
#define ALAC_ESCAPE_CODE   0x1FF
 
#define ALAC_MAX_LPC_ORDER   30
 
#define DEFAULT_MAX_PRED_ORDER   6
 
#define DEFAULT_MIN_PRED_ORDER   4
 
#define ALAC_MAX_LPC_PRECISION   9
 
#define ALAC_MIN_LPC_SHIFT   0
 
#define ALAC_MAX_LPC_SHIFT   9
 
#define ALAC_CHMODE_LEFT_RIGHT   0
 
#define ALAC_CHMODE_LEFT_SIDE   1
 
#define ALAC_CHMODE_RIGHT_SIDE   2
 
#define ALAC_CHMODE_MID_SIDE   3
 
#define COPY_SAMPLES(type)
 
#define OFFSET(x)   offsetof(AlacEncodeContext, x)
 
#define AE   AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
 

Functions

static void init_sample_buffers (AlacEncodeContext *s, int channels, const uint8_t *samples[2])
 
static void encode_scalar (AlacEncodeContext *s, int x, int k, int write_sample_size)
 
static void write_element_header (AlacEncodeContext *s, enum AlacRawDataBlockType element, int instance)
 
static void calc_predictor_params (AlacEncodeContext *s, int ch)
 
static int estimate_stereo_mode (int32_t *left_ch, int32_t *right_ch, int n)
 
static void alac_stereo_decorrelation (AlacEncodeContext *s)
 
static void alac_linear_predictor (AlacEncodeContext *s, int ch)
 
static void alac_entropy_coder (AlacEncodeContext *s, int ch)
 
static void write_element (AlacEncodeContext *s, enum AlacRawDataBlockType element, int instance, const uint8_t *samples0, const uint8_t *samples1)
 
static int write_frame (AlacEncodeContext *s, AVPacket *avpkt, uint8_t *const *samples)
 
static av_always_inline int get_max_frame_size (int frame_size, int ch, int bps)
 
static av_cold int alac_encode_close (AVCodecContext *avctx)
 
static av_cold int alac_encode_init (AVCodecContext *avctx)
 
static int alac_encode_frame (AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame, int *got_packet_ptr)
 

Variables

static const AVOption options []
 
static const AVClass alacenc_class
 
AVCodec ff_alac_encoder
 

Macro Definition Documentation

◆ DEFAULT_FRAME_SIZE

#define DEFAULT_FRAME_SIZE   4096

Definition at line 31 of file alacenc.c.

◆ ALAC_EXTRADATA_SIZE

#define ALAC_EXTRADATA_SIZE   36

Definition at line 32 of file alacenc.c.

◆ ALAC_FRAME_HEADER_SIZE

#define ALAC_FRAME_HEADER_SIZE   55

Definition at line 33 of file alacenc.c.

◆ ALAC_FRAME_FOOTER_SIZE

#define ALAC_FRAME_FOOTER_SIZE   3

Definition at line 34 of file alacenc.c.

◆ ALAC_ESCAPE_CODE

#define ALAC_ESCAPE_CODE   0x1FF

Definition at line 36 of file alacenc.c.

◆ ALAC_MAX_LPC_ORDER

#define ALAC_MAX_LPC_ORDER   30

Definition at line 37 of file alacenc.c.

◆ DEFAULT_MAX_PRED_ORDER

#define DEFAULT_MAX_PRED_ORDER   6

Definition at line 38 of file alacenc.c.

◆ DEFAULT_MIN_PRED_ORDER

#define DEFAULT_MIN_PRED_ORDER   4

Definition at line 39 of file alacenc.c.

◆ ALAC_MAX_LPC_PRECISION

#define ALAC_MAX_LPC_PRECISION   9

Definition at line 40 of file alacenc.c.

◆ ALAC_MIN_LPC_SHIFT

#define ALAC_MIN_LPC_SHIFT   0

Definition at line 41 of file alacenc.c.

◆ ALAC_MAX_LPC_SHIFT

#define ALAC_MAX_LPC_SHIFT   9

Definition at line 42 of file alacenc.c.

◆ ALAC_CHMODE_LEFT_RIGHT

#define ALAC_CHMODE_LEFT_RIGHT   0

Definition at line 44 of file alacenc.c.

◆ ALAC_CHMODE_LEFT_SIDE

#define ALAC_CHMODE_LEFT_SIDE   1

Definition at line 45 of file alacenc.c.

◆ ALAC_CHMODE_RIGHT_SIDE

#define ALAC_CHMODE_RIGHT_SIDE   2

Definition at line 46 of file alacenc.c.

◆ ALAC_CHMODE_MID_SIDE

#define ALAC_CHMODE_MID_SIDE   3

Definition at line 47 of file alacenc.c.

◆ COPY_SAMPLES

#define COPY_SAMPLES (   type)
Value:
do { \
for (ch = 0; ch < channels; ch++) { \
int32_t *bptr = s->sample_buf[ch]; \
const type *sptr = (const type *)samples[ch]; \
for (i = 0; i < s->frame_size; i++) \
bptr[i] = sptr[i] >> shift; \
} \
} while (0)

◆ OFFSET

#define OFFSET (   x)    offsetof(AlacEncodeContext, x)

Definition at line 654 of file alacenc.c.

◆ AE

Definition at line 655 of file alacenc.c.

Function Documentation

◆ init_sample_buffers()

static void init_sample_buffers ( AlacEncodeContext s,
int  channels,
const uint8_t samples[2] 
)
static

Definition at line 84 of file alacenc.c.

Referenced by write_element().

◆ encode_scalar()

static void encode_scalar ( AlacEncodeContext s,
int  x,
int  k,
int  write_sample_size 
)
static

Definition at line 106 of file alacenc.c.

Referenced by alac_entropy_coder().

◆ write_element_header()

static void write_element_header ( AlacEncodeContext s,
enum AlacRawDataBlockType  element,
int  instance 
)
static

Definition at line 134 of file alacenc.c.

Referenced by write_element().

◆ calc_predictor_params()

static void calc_predictor_params ( AlacEncodeContext s,
int  ch 
)
static

Definition at line 153 of file alacenc.c.

Referenced by write_element().

◆ estimate_stereo_mode()

static int estimate_stereo_mode ( int32_t left_ch,
int32_t right_ch,
int  n 
)
static

Definition at line 184 of file alacenc.c.

Referenced by alac_stereo_decorrelation().

◆ alac_stereo_decorrelation()

static void alac_stereo_decorrelation ( AlacEncodeContext s)
static

Definition at line 217 of file alacenc.c.

Referenced by write_element().

◆ alac_linear_predictor()

static void alac_linear_predictor ( AlacEncodeContext s,
int  ch 
)
static

Definition at line 257 of file alacenc.c.

Referenced by write_element().

◆ alac_entropy_coder()

static void alac_entropy_coder ( AlacEncodeContext s,
int  ch 
)
static

Definition at line 321 of file alacenc.c.

Referenced by write_element().

◆ write_element()

static void write_element ( AlacEncodeContext s,
enum AlacRawDataBlockType  element,
int  instance,
const uint8_t samples0,
const uint8_t samples1 
)
static

Definition at line 365 of file alacenc.c.

Referenced by write_frame().

◆ write_frame()

static int write_frame ( AlacEncodeContext s,
AVPacket avpkt,
uint8_t *const *  samples 
)
static

Definition at line 460 of file alacenc.c.

Referenced by alac_encode_frame().

◆ get_max_frame_size()

static av_always_inline int get_max_frame_size ( int  frame_size,
int  ch,
int  bps 
)
static

Definition at line 491 of file alacenc.c.

Referenced by alac_encode_frame(), and alac_encode_init().

◆ alac_encode_close()

static av_cold int alac_encode_close ( AVCodecContext avctx)
static

Definition at line 497 of file alacenc.c.

Referenced by alac_encode_init().

◆ alac_encode_init()

static av_cold int alac_encode_init ( AVCodecContext avctx)
static

Definition at line 506 of file alacenc.c.

◆ alac_encode_frame()

static int alac_encode_frame ( AVCodecContext avctx,
AVPacket avpkt,
const AVFrame frame,
int got_packet_ptr 
)
static

Definition at line 614 of file alacenc.c.

Variable Documentation

◆ options

const AVOption options[]
static
Initial value:
= {
{ "min_prediction_order", NULL, OFFSET(min_prediction_order), AV_OPT_TYPE_INT, { .i64 = DEFAULT_MIN_PRED_ORDER }, MIN_LPC_ORDER, ALAC_MAX_LPC_ORDER, AE },
{ "max_prediction_order", NULL, OFFSET(max_prediction_order), AV_OPT_TYPE_INT, { .i64 = DEFAULT_MAX_PRED_ORDER }, MIN_LPC_ORDER, ALAC_MAX_LPC_ORDER, AE },
{ NULL },
}

Definition at line 656 of file alacenc.c.

◆ alacenc_class

const AVClass alacenc_class
static
Initial value:
= {
.class_name = "alacenc",
.item_name = av_default_item_name,
.option = options,
}

Definition at line 663 of file alacenc.c.

◆ ff_alac_encoder

AVCodec ff_alac_encoder
Initial value:
= {
.name = "alac",
.long_name = NULL_IF_CONFIG_SMALL("ALAC (Apple Lossless Audio Codec)"),
.priv_data_size = sizeof(AlacEncodeContext),
.priv_class = &alacenc_class,
.encode2 = alac_encode_frame,
}

Definition at line 670 of file alacenc.c.

OFFSET
#define OFFSET(x)
Definition: alacenc.c:654
init
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
DEFAULT_MIN_PRED_ORDER
#define DEFAULT_MIN_PRED_ORDER
Definition: alacenc.c:39
sample_fmts
static enum AVSampleFormat sample_fmts[]
Definition: adpcmenc.c:716
alac_encode_init
static av_cold int alac_encode_init(AVCodecContext *avctx)
Definition: alacenc.c:506
AV_SAMPLE_FMT_S32P
@ AV_SAMPLE_FMT_S32P
signed 32 bits, planar
Definition: samplefmt.h:68
AV_CODEC_ID_ALAC
@ AV_CODEC_ID_ALAC
Definition: codec_id.h:426
samples
FFmpeg Automated Testing Environment ************************************Introduction Using FATE from your FFmpeg source directory Submitting the results to the FFmpeg result aggregation server Uploading new samples to the fate suite FATE makefile targets and variables Makefile targets Makefile variables Examples Introduction **************FATE is an extended regression suite on the client side and a means for results aggregation and presentation on the server side The first part of this document explains how you can use FATE from your FFmpeg source directory to test your ffmpeg binary The second part describes how you can run FATE to submit the results to FFmpeg’s FATE server In any way you can have a look at the publicly viewable FATE results by visiting this as it can be seen if some test on some platform broke with their recent contribution This usually happens on the platforms the developers could not test on The second part of this document describes how you can run FATE to submit your results to FFmpeg’s FATE server If you want to submit your results be sure to check that your combination of OS and compiler is not already listed on the above mentioned website In the third part you can find a comprehensive listing of FATE makefile targets and variables Using FATE from your FFmpeg source directory **********************************************If you want to run FATE on your machine you need to have the samples in place You can get the samples via the build target fate rsync Use this command from the top level source this will cause FATE to fail NOTE To use a custom wrapper to run the pass ‘ target exec’ to ‘configure’ or set the TARGET_EXEC Make variable Submitting the results to the FFmpeg result aggregation server ****************************************************************To submit your results to the server you should run fate through the shell script ‘tests fate sh’ from the FFmpeg sources This script needs to be invoked with a configuration file as its first argument tests fate sh path to fate_config A configuration file template with comments describing the individual configuration variables can be found at ‘doc fate_config sh template’ Create a configuration that suits your based on the configuration template The ‘slot’ configuration variable can be any string that is not yet but it is suggested that you name it adhering to the following pattern ‘ARCH OS COMPILER COMPILER VERSION’ The configuration file itself will be sourced in a shell therefore all shell features may be used This enables you to setup the environment as you need it for your build For your first test runs the ‘fate_recv’ variable should be empty or commented out This will run everything as normal except that it will omit the submission of the results to the server The following files should be present in $workdir as specified in the configuration it may help to try out the ‘ssh’ command with one or more ‘ v’ options You should get detailed output concerning your SSH configuration and the authentication process The only thing left is to automate the execution of the fate sh script and the synchronisation of the samples directory Uploading new samples to the fate suite *****************************************If you need a sample uploaded send a mail to samples request This is for developers who have an account on the fate suite server If you upload new samples
Definition: fate.txt:139
DEFAULT_MAX_PRED_ORDER
#define DEFAULT_MAX_PRED_ORDER
Definition: alacenc.c:38
type
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf type
Definition: writing_filters.txt:86
alacenc_class
static const AVClass alacenc_class
Definition: alacenc.c:663
alac_encode_frame
static int alac_encode_frame(AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame, int *got_packet_ptr)
Definition: alacenc.c:614
s
#define s(width, name)
Definition: cbs_vp9.c:257
AVMEDIA_TYPE_AUDIO
@ AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
channels
channels
Definition: aptx.h:33
ch
uint8_t pi<< 24) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_U8,(uint64_t)((*(const uint8_t *) pi - 0x80U))<< 56) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8,(*(const uint8_t *) pi - 0x80) *(1.0f/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8,(*(const uint8_t *) pi - 0x80) *(1.0/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16,(*(const int16_t *) pi >>8)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S16,(uint64_t)(*(const int16_t *) pi)<< 48) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, *(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, *(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32,(*(const int32_t *) pi >>24)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S32,(uint64_t)(*(const int32_t *) pi)<< 32) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, *(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, *(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S64,(*(const int64_t *) pi >>56)+0x80) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S64, *(const int64_t *) pi *(1.0f/(UINT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S64, *(const int64_t *) pi *(1.0/(UINT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_FLT, llrintf(*(const float *) pi *(UINT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_DBL, llrint(*(const double *) pi *(UINT64_C(1)<< 63))) #define FMT_PAIR_FUNC(out, in) static conv_func_type *const fmt_pair_to_conv_functions[AV_SAMPLE_FMT_NB *AV_SAMPLE_FMT_NB]={ FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S64), };static void cpy1(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, len);} static void cpy2(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, 2 *len);} static void cpy4(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, 4 *len);} static void cpy8(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, 8 *len);} AudioConvert *swri_audio_convert_alloc(enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, const int *ch_map, int flags) { AudioConvert *ctx;conv_func_type *f=fmt_pair_to_conv_functions[av_get_packed_sample_fmt(out_fmt)+AV_SAMPLE_FMT_NB *av_get_packed_sample_fmt(in_fmt)];if(!f) return NULL;ctx=av_mallocz(sizeof(*ctx));if(!ctx) return NULL;if(channels==1){ in_fmt=av_get_planar_sample_fmt(in_fmt);out_fmt=av_get_planar_sample_fmt(out_fmt);} ctx->channels=channels;ctx->conv_f=f;ctx->ch_map=ch_map;if(in_fmt==AV_SAMPLE_FMT_U8||in_fmt==AV_SAMPLE_FMT_U8P) memset(ctx->silence, 0x80, sizeof(ctx->silence));if(out_fmt==in_fmt &&!ch_map) { switch(av_get_bytes_per_sample(in_fmt)){ case 1:ctx->simd_f=cpy1;break;case 2:ctx->simd_f=cpy2;break;case 4:ctx->simd_f=cpy4;break;case 8:ctx->simd_f=cpy8;break;} } if(HAVE_X86ASM &&HAVE_MMX) swri_audio_convert_init_x86(ctx, out_fmt, in_fmt, channels);if(ARCH_ARM) swri_audio_convert_init_arm(ctx, out_fmt, in_fmt, channels);if(ARCH_AARCH64) swri_audio_convert_init_aarch64(ctx, out_fmt, in_fmt, channels);return ctx;} void swri_audio_convert_free(AudioConvert **ctx) { av_freep(ctx);} int swri_audio_convert(AudioConvert *ctx, AudioData *out, AudioData *in, int len) { int ch;int off=0;const int os=(out->planar ? 1 :out->ch_count) *out->bps;unsigned misaligned=0;av_assert0(ctx->channels==out->ch_count);if(ctx->in_simd_align_mask) { int planes=in->planar ? in->ch_count :1;unsigned m=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) in->ch[ch];misaligned|=m &ctx->in_simd_align_mask;} if(ctx->out_simd_align_mask) { int planes=out->planar ? out->ch_count :1;unsigned m=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) out->ch[ch];misaligned|=m &ctx->out_simd_align_mask;} if(ctx->simd_f &&!ctx->ch_map &&!misaligned){ off=len &~15;av_assert1(off >=0);av_assert1(off<=len);av_assert2(ctx->channels==SWR_CH_MAX||!in->ch[ctx->channels]);if(off >0){ if(out->planar==in->planar){ int planes=out->planar ? out->ch_count :1;for(ch=0;ch< planes;ch++){ ctx->simd_f(out-> ch ch
Definition: audioconvert.c:56
LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
NULL
#define NULL
Definition: coverity.c:32
av_default_item_name
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:235
AE
#define AE
Definition: alacenc.c:655
options
static const AVOption options[]
Definition: alacenc.c:656
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:186
AV_SAMPLE_FMT_NONE
@ AV_SAMPLE_FMT_NONE
Definition: samplefmt.h:59
MIN_LPC_ORDER
#define MIN_LPC_ORDER
Definition: lpc.h:37
AV_SAMPLE_FMT_S16P
@ AV_SAMPLE_FMT_S16P
signed 16 bits, planar
Definition: samplefmt.h:67
ALAC_MAX_LPC_ORDER
#define ALAC_MAX_LPC_ORDER
Definition: alacenc.c:37
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
AVSampleFormat
AVSampleFormat
Audio sample formats.
Definition: samplefmt.h:58
ff_alac_channel_layouts
const uint64_t ff_alac_channel_layouts[ALAC_MAX_CHANNELS+1]
Definition: alac_data.c:35
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:223
shift
static int shift(int a, int b)
Definition: sonic.c:82
alac_encode_close
static av_cold int alac_encode_close(AVCodecContext *avctx)
Definition: alacenc.c:497
channel_layouts
static const uint16_t channel_layouts[7]
Definition: dca_lbr.c:113
AlacEncodeContext
Definition: alacenc.c:62
AV_CODEC_CAP_SMALL_LAST_FRAME
#define AV_CODEC_CAP_SMALL_LAST_FRAME
Codec can be fed a final frame with a smaller size.
Definition: codec.h:80