audiotoolboxdec.c File Reference

#include <AudioToolbox/AudioToolbox.h>
#include "config.h"
#include "avcodec.h"
#include "ac3_parser.h"
#include "bytestream.h"
#include "internal.h"
#include "mpegaudiodecheader.h"
#include "libavutil/avassert.h"
#include "libavutil/opt.h"
#include "libavutil/log.h"

Go to the source code of this file.

Data Structures
struct	ATDecodeContext

Macros
#define	kAudioFormatEnhancedAC3   'ec-3'
#define	COPY_SAMPLES(type)
#define	FFAT_DEC_CLASS(NAME)
#define	FFAT_DEC(NAME, ID)

Functions
static UInt32	ffat_get_format_id (enum AVCodecID codec, int profile)
static int	ffat_get_channel_id (AudioChannelLabel label)
static int	ffat_compare_channel_descriptions (const void *a, const void *b)
static AudioChannelLayout *	ffat_convert_layout (AudioChannelLayout *layout, UInt32 *size)
static int	ffat_update_ctx (AVCodecContext *avctx)
static void	put_descr (PutByteContext *pb, int tag, unsigned int size)
static uint8_t *	ffat_get_magic_cookie (AVCodecContext *avctx, UInt32 *cookie_size)
static av_cold int	ffat_usable_extradata (AVCodecContext *avctx)
static int	ffat_set_extradata (AVCodecContext *avctx)
static av_cold int	ffat_create_decoder (AVCodecContext *avctx, AVPacket *pkt)
static av_cold int	ffat_init_decoder (AVCodecContext *avctx)
static OSStatus	ffat_decode_callback (AudioConverterRef converter, UInt32 *nb_packets, AudioBufferList *data, AudioStreamPacketDescription **packets, void *inctx)
static void	ffat_copy_samples (AVCodecContext *avctx, AVFrame *frame)
static int	ffat_decode (AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *avpkt)
static av_cold void	ffat_decode_flush (AVCodecContext *avctx)
static av_cold int	ffat_close_decoder (AVCodecContext *avctx)

Macro Definition Documentation

#define kAudioFormatEnhancedAC3   'ec-3'

Definition at line 36 of file audiotoolboxdec.c.

Referenced by ffat_get_format_id().

#define COPY_SAMPLES

(

type

)

Value:

type *in_ptr = (type*)at->decoded_data; \
    type *end_ptr = in_ptr + frame->nb_samples * avctx->channels; \
    type *out_ptr = (type*)frame->data[0]; \
    for (; in_ptr < end_ptr; in_ptr += avctx->channels, out_ptr += avctx->channels) { \
        int c; \
        for (c = 0; c < avctx->channels; c++) \
            out_ptr[c] = in_ptr[at->channel_map[c]]; \
    }

Definition at line 450 of file audiotoolboxdec.c.

Referenced by ffat_copy_samples().

#define FFAT_DEC_CLASS

(

NAME

)

Value:

static const AVClass ffat_##NAME##_dec_class = { \
        .class_name = "at_" #NAME "_dec", \
        .version    = LIBAVUTIL_VERSION_INT, \
    };

Definition at line 593 of file audiotoolboxdec.c.

#define FFAT_DEC	(		NAME,
			ID
	)

Value:

FFAT_DEC_CLASS(NAME) \
    AVCodec ff_##NAME##_at_decoder = { \
        .name           = #NAME "_at", \
        .long_name      = NULL_IF_CONFIG_SMALL(#NAME " (AudioToolbox)"), \
        .type           = AVMEDIA_TYPE_AUDIO, \
        .id             = ID, \
        .priv_data_size = sizeof(ATDecodeContext), \
        .init           = ffat_init_decoder, \
        .close          = ffat_close_decoder, \
        .decode         = ffat_decode, \
        .flush          = ffat_decode_flush, \
        .priv_class     = &ffat_##NAME##_dec_class, \
        .capabilities   = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY, \
        .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE, \
    };

Definition at line 599 of file audiotoolboxdec.c.

Function Documentation

static UInt32 ffat_get_format_id ( enum AVCodecID  codec, int  profile  )

static

Definition at line 57 of file audiotoolboxdec.c.

Referenced by ffat_create_decoder().

static int ffat_get_channel_id ( AudioChannelLabel  label )

static

Definition at line 96 of file audiotoolboxdec.c.

Referenced by ffat_compare_channel_descriptions(), and ffat_update_ctx().

static int ffat_compare_channel_descriptions ( const void *  a, const void *  b  )

static

Definition at line 124 of file audiotoolboxdec.c.

Referenced by ffat_update_ctx().

static AudioChannelLayout* ffat_convert_layout ( AudioChannelLayout *  layout, UInt32 *  size  )

static

Definition at line 131 of file audiotoolboxdec.c.

Referenced by ffat_update_ctx().

static int ffat_update_ctx ( AVCodecContext *  avctx )

static

Definition at line 159 of file audiotoolboxdec.c.

Referenced by ffat_create_decoder().

static void put_descr ( PutByteContext *  pb, int  tag, unsigned int  size  )

static

Definition at line 219 of file audiotoolboxdec.c.

Referenced by ffat_get_magic_cookie().

static uint8_t* ffat_get_magic_cookie ( AVCodecContext *  avctx, UInt32 *  cookie_size  )

static

Definition at line 228 of file audiotoolboxdec.c.

Referenced by ffat_create_decoder(), and ffat_set_extradata().

static av_cold int ffat_usable_extradata ( AVCodecContext *  avctx )

static

Definition at line 268 of file audiotoolboxdec.c.

Referenced by ffat_create_decoder(), ffat_init_decoder(), and ffat_set_extradata().

static int ffat_set_extradata ( AVCodecContext *  avctx )

static

Definition at line 278 of file audiotoolboxdec.c.

Referenced by ffat_create_decoder().

static av_cold int ffat_create_decoder ( AVCodecContext *  avctx, AVPacket *  pkt  )

static

Definition at line 300 of file audiotoolboxdec.c.

Referenced by ffat_decode(), and ffat_init_decoder().

static av_cold int ffat_init_decoder ( AVCodecContext *  avctx )

static

Definition at line 399 of file audiotoolboxdec.c.

static OSStatus ffat_decode_callback ( AudioConverterRef  converter, UInt32 *  nb_packets, AudioBufferList *  data, AudioStreamPacketDescription **  packets, void *  inctx  )

static

Definition at line 411 of file audiotoolboxdec.c.

Referenced by ffat_decode().

static void ffat_copy_samples ( AVCodecContext *  avctx, AVFrame *  frame  )

static

Definition at line 460 of file audiotoolboxdec.c.

Referenced by ffat_decode().

static int ffat_decode ( AVCodecContext *  avctx, void *  data, int *  got_frame_ptr, AVPacket *  avpkt  )

static

Definition at line 470 of file audiotoolboxdec.c.

static av_cold void ffat_decode_flush ( AVCodecContext *  avctx )

static

Definition at line 574 of file audiotoolboxdec.c.

static av_cold int ffat_close_decoder ( AVCodecContext *  avctx )

static

Definition at line 582 of file audiotoolboxdec.c.