alsdec.c File Reference

MPEG-4 ALS decoder. More...

#include <inttypes.h>
#include "avcodec.h"
#include "get_bits.h"
#include "unary.h"
#include "mpeg4audio.h"
#include "bgmc.h"
#include "bswapdsp.h"
#include "internal.h"
#include "mlz.h"
#include "libavutil/samplefmt.h"
#include "libavutil/crc.h"
#include "libavutil/softfloat_ieee754.h"
#include "libavutil/intfloat.h"
#include "libavutil/intreadwrite.h"
#include <stdint.h>

Classes
struct	ALSSpecificConfig
struct	ALSChannelData
struct	ALSDecContext
struct	ALSBlockData

Macros
#define	MISSING_ERR(cond, str, errval)
#define	INTERLEAVE_OUTPUT(bps)

Typedefs
typedef struct ALSSpecificConfig	ALSSpecificConfig
typedef struct ALSChannelData	ALSChannelData
typedef struct ALSDecContext	ALSDecContext
typedef struct ALSBlockData	ALSBlockData

Enumerations
enum	RA_Flag { RA_FLAG_NONE, RA_FLAG_FRAMES, RA_FLAG_HEADER }

Variables
AVCodec	ff_als_decoder

Detailed Description

MPEG-4 ALS decoder.

Author

Thilo Borgmann <thilo.borgmann at mail.de>

Macro Definition Documentation

INTERLEAVE_OUTPUT

#define INTERLEAVE_OUTPUT

(

bps

)

Value:

{                                                                                \
        int##bps##_t *dest = (int##bps##_t*)frame->data[0];                          \
        shift = bps - ctx->avctx->bits_per_raw_sample;                               \
        if (!ctx->cs_switch) {                                                       \
            for (sample = 0; sample < ctx->cur_frame_length; sample++)               \
                for (c = 0; c < avctx->channels; c++)                                \
                    *dest++ = ctx->raw_samples[c][sample] << shift;                  \
        } else {                                                                     \
            for (sample = 0; sample < ctx->cur_frame_length; sample++)               \
                for (c = 0; c < avctx->channels; c++)                                \
                    *dest++ = ctx->raw_samples[sconf->chan_pos[c]][sample] << shift; \
        }                                                                            \
    }

MISSING_ERR

#define MISSING_ERR	(		cond,
			str,
			errval
	)

Value:

{                                                   \
        if (cond) {                                     \
            avpriv_report_missing_feature(ctx->avctx,   \
                                          str);         \
            error = errval;                             \
        }                                               \
    }

Variable Documentation

ff_als_decoder

AVCodec ff_als_decoder

Initial value:

= {
    .name           = "als",
    .long_name      = NULL_IF_CONFIG_SMALL("MPEG-4 Audio Lossless Coding (ALS)"),
    .type           = AVMEDIA_TYPE_AUDIO,
    .id             = AV_CODEC_ID_MP4ALS,
    .priv_data_size = sizeof(ALSDecContext),
    .init           = decode_init,
    .close          = decode_end,
    .decode         = decode_frame,
    .flush          = flush,
    .capabilities   = AV_CODEC_CAP_SUBFRAMES | AV_CODEC_CAP_DR1,
}