audiotoolboxdec.c File Reference

#include <AudioToolbox/AudioToolbox.h>
#include "config.h"
#include "config_components.h"
#include "avcodec.h"
#include "ac3_parser_internal.h"
#include "bytestream.h"
#include "codec_internal.h"
#include "decode.h"
#include "mpegaudiodecheader.h"
#include "libavutil/avassert.h"
#include "libavutil/channel_layout.h"
#include "libavutil/mem.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, bsf_name)

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, const 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, AVFrame *frame, 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

kAudioFormatEnhancedAC3

#define kAudioFormatEnhancedAC3   'ec-3'

Definition at line 40 of file audiotoolboxdec.c.

Referenced by ffat_get_format_id().

COPY_SAMPLES

#define COPY_SAMPLES

(

type

)

Value:

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

Definition at line 469 of file audiotoolboxdec.c.

Referenced by ffat_copy_samples().

FFAT_DEC_CLASS

#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 589 of file audiotoolboxdec.c.

FFAT_DEC

#define FFAT_DEC	(		NAME,
			ID,
			bsf_name )

Value:

    FFAT_DEC_CLASS(NAME) \
    const FFCodec ff_##NAME##_at_decoder = { \
        .p.name         = #NAME "_at", \
        CODEC_LONG_NAME(#NAME " (AudioToolbox)"), \
        .p.type         = AVMEDIA_TYPE_AUDIO, \
        .p.id           = ID, \
        .priv_data_size = sizeof(ATDecodeContext), \
        .init           = ffat_init_decoder, \
        .close          = ffat_close_decoder, \
        FF_CODEC_DECODE_CB(ffat_decode), \
        .flush          = ffat_decode_flush, \
        .p.priv_class   = &ffat_##NAME##_dec_class, \
        .bsfs           = bsf_name, \
        .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY | AV_CODEC_CAP_CHANNEL_CONF, \
        .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP, \
        .p.wrapper_name = "at", \
    };

Definition at line 595 of file audiotoolboxdec.c.

Function Documentation

ffat_get_format_id()

static UInt32 ffat_get_format_id ( enum AVCodecID codec, int profile )

static

Definition at line 60 of file audiotoolboxdec.c.

Referenced by ffat_create_decoder().

ffat_get_channel_id()

static int ffat_get_channel_id ( AudioChannelLabel label )

static

Definition at line 101 of file audiotoolboxdec.c.

Referenced by ffat_compare_channel_descriptions(), and ffat_update_ctx().

ffat_compare_channel_descriptions()

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

static

Definition at line 129 of file audiotoolboxdec.c.

Referenced by ffat_update_ctx().

ffat_convert_layout()

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

static

Definition at line 136 of file audiotoolboxdec.c.

Referenced by ffat_update_ctx().

ffat_update_ctx()

static int ffat_update_ctx ( AVCodecContext * avctx )

static

Definition at line 164 of file audiotoolboxdec.c.

Referenced by ffat_create_decoder().

put_descr()

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

static

Definition at line 225 of file audiotoolboxdec.c.

Referenced by ffat_get_magic_cookie().

ffat_get_magic_cookie()

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

static

Definition at line 234 of file audiotoolboxdec.c.

Referenced by ffat_create_decoder(), and ffat_set_extradata().

ffat_usable_extradata()

static av_cold int ffat_usable_extradata ( AVCodecContext * avctx )

static

Definition at line 274 of file audiotoolboxdec.c.

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

ffat_set_extradata()

static int ffat_set_extradata ( AVCodecContext * avctx )

static

Definition at line 284 of file audiotoolboxdec.c.

Referenced by ffat_create_decoder().

ffat_create_decoder()

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

static

Definition at line 306 of file audiotoolboxdec.c.

Referenced by ffat_decode(), and ffat_init_decoder().

ffat_init_decoder()

static av_cold int ffat_init_decoder ( AVCodecContext * avctx )

static

Definition at line 413 of file audiotoolboxdec.c.

ffat_decode_callback()

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

static

Definition at line 430 of file audiotoolboxdec.c.

Referenced by ffat_decode().

ffat_copy_samples()

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

static

Definition at line 479 of file audiotoolboxdec.c.

Referenced by ffat_decode().

ffat_decode()

static int ffat_decode ( AVCodecContext * avctx, AVFrame * frame, int * got_frame_ptr, AVPacket * avpkt )

static

Definition at line 489 of file audiotoolboxdec.c.

ffat_decode_flush()

static av_cold void ffat_decode_flush ( AVCodecContext * avctx )

static

Definition at line 569 of file audiotoolboxdec.c.

ffat_close_decoder()

static av_cold int ffat_close_decoder ( AVCodecContext * avctx )

static

Definition at line 577 of file audiotoolboxdec.c.