FFmpeg
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#include "config_components.h"
#include "avcodec.h"
#include "get_bits.h"
#include "bytestream.h"
#include "adpcm.h"
#include "adpcm_data.h"
#include "codec_internal.h"
#include "decode.h"
#include "libavutil/attributes.h"
Go to the source code of this file.
Data Structures | |
struct | ADPCMDecodeContext |
Macros | |
#define | CASE_0(codec_id, ...) |
#define | CASE_1(codec_id, ...) |
#define | CASE_2(enabled, codec_id, ...) CASE_ ## enabled(codec_id, __VA_ARGS__) |
#define | CASE_3(config, codec_id, ...) CASE_2(config, codec_id, __VA_ARGS__) |
#define | CASE(codec, ...) CASE_3(CONFIG_ ## codec ## _DECODER, AV_CODEC_ID_ ## codec, __VA_ARGS__) |
#define | DK3_GET_NEXT_NIBBLE() |
#define | ADPCM_DECODER_0(id_, sample_fmts_, name_, long_name_) |
#define | ADPCM_DECODER_1(id_, sample_fmts_, name_, long_name_) |
#define | ADPCM_DECODER_2(enabled, codec_id, name, sample_fmts, long_name) ADPCM_DECODER_ ## enabled(codec_id, name, sample_fmts, long_name) |
#define | ADPCM_DECODER_3(config, codec_id, name, sample_fmts, long_name) ADPCM_DECODER_2(config, codec_id, name, sample_fmts, long_name) |
#define | ADPCM_DECODER(codec, name, sample_fmts, long_name) |
Functions | |
static void | adpcm_flush (AVCodecContext *avctx) |
static av_cold int | adpcm_decode_init (AVCodecContext *avctx) |
static int16_t | adpcm_agm_expand_nibble (ADPCMChannelStatus *c, int8_t nibble) |
static int16_t | adpcm_ima_escape_expand_nibble (ADPCMChannelStatus *c, int8_t nibble) |
static int16_t | adpcm_ima_expand_nibble (ADPCMChannelStatus *c, int8_t nibble, int shift) |
static int16_t | adpcm_ima_alp_expand_nibble (ADPCMChannelStatus *c, int8_t nibble, int shift) |
static int16_t | adpcm_ima_mtf_expand_nibble (ADPCMChannelStatus *c, int nibble) |
static int16_t | adpcm_ima_cunning_expand_nibble (ADPCMChannelStatus *c, int8_t nibble) |
static int16_t | adpcm_ima_wav_expand_nibble (ADPCMChannelStatus *c, GetBitContext *gb, int bps) |
int16_t | ff_adpcm_ima_qt_expand_nibble (ADPCMChannelStatus *c, int nibble) |
static void | decode_adpcm_ima_hvqm2 (AVCodecContext *avctx, int16_t *outbuf, int samples_to_do, int frame_format, GetByteContext *gb) |
static void | decode_adpcm_ima_hvqm4 (AVCodecContext *avctx, int16_t *outbuf, int samples_to_do, int frame_format, GetByteContext *gb) |
static int16_t | adpcm_ms_expand_nibble (ADPCMChannelStatus *c, int nibble) |
static int16_t | adpcm_ima_oki_expand_nibble (ADPCMChannelStatus *c, int nibble) |
static int16_t | adpcm_ct_expand_nibble (ADPCMChannelStatus *c, int8_t nibble) |
static int16_t | adpcm_sbpro_expand_nibble (ADPCMChannelStatus *c, int8_t nibble, int size, int shift) |
static int16_t | adpcm_yamaha_expand_nibble (ADPCMChannelStatus *c, uint8_t nibble) |
static int16_t | adpcm_mtaf_expand_nibble (ADPCMChannelStatus *c, uint8_t nibble) |
static int16_t | adpcm_circus_expand_nibble (ADPCMChannelStatus *c, uint8_t nibble) |
static int16_t | adpcm_zork_expand_nibble (ADPCMChannelStatus *c, uint8_t nibble) |
static int | xa_decode (AVCodecContext *avctx, int16_t *out0, int16_t *out1, const uint8_t *in, ADPCMChannelStatus *left, ADPCMChannelStatus *right, int channels, int sample_offset) |
static void | adpcm_swf_decode (AVCodecContext *avctx, const uint8_t *buf, int buf_size, int16_t *samples) |
int16_t | ff_adpcm_argo_expand_nibble (ADPCMChannelStatus *cs, int nibble, int shift, int flag) |
static int | adpcm_sanyo_expand3 (ADPCMChannelStatus *c, int bits) |
static int | adpcm_sanyo_expand4 (ADPCMChannelStatus *c, int bits) |
static int | adpcm_sanyo_expand5 (ADPCMChannelStatus *c, int bits) |
static int | get_nb_samples (AVCodecContext *avctx, GetByteContext *gb, int buf_size, int *coded_samples, int *approx_nb_samples) |
Get the number of samples (per channel) that will be decoded from the packet. More... | |
static int | adpcm_decode_frame (AVCodecContext *avctx, AVFrame *frame, int *got_frame_ptr, AVPacket *avpkt) |
Variables | |
static const int8_t | xa_adpcm_table [5][2] |
static const int16_t | afc_coeffs [2][16] |
static const int16_t | ea_adpcm_table [] |
static const int8_t | ima_cunning_index_table [9] |
static const int16_t | ima_cunning_step_table [61] |
static const int8_t | adpcm_index_table2 [4] |
static const int8_t | adpcm_index_table3 [8] |
static const int8_t | adpcm_index_table5 [32] |
static const int8_t *const | adpcm_index_tables [4] |
static const int16_t | mtaf_stepsize [32][16] |
static const int16_t | oki_step_table [49] |
static const int8_t | swf_index_tables [4][16] |
static const int8_t | zork_index_table [8] |
static const int8_t | mtf_index_table [16] |
static enum AVSampleFormat | sample_fmts_s16 [] |
static enum AVSampleFormat | sample_fmts_s16p [] |
static enum AVSampleFormat | sample_fmts_both [] |
ADPCM decoders Features and limitations:
Reference documents: http://wiki.multimedia.cx/index.php?title=Category:ADPCM_Audio_Codecs http://www.pcisys.net/~melanson/codecs/simpleaudio.html [dead] http://www.geocities.com/SiliconValley/8682/aud3.txt [dead] http://openquicktime.sourceforge.net/ XAnim sources (xa_codec.c) http://xanim.polter.net/ http://www.cs.ucla.edu/~leec/mediabench/applications.html [dead] SoX source code http://sox.sourceforge.net/
CD-ROM XA: http://ku-www.ss.titech.ac.jp/~yatsushi/xaadpcm.html [dead] vagpack & depack http://homepages.compuserve.de/bITmASTER32/psx-index.html [dead] readstr http://www.geocities.co.jp/Playtown/2004/
Definition in file adpcm.c.
#define CASE_1 | ( | codec_id, | |
... | |||
) |
#define CASE | ( | codec, | |
... | |||
) | CASE_3(CONFIG_ ## codec ## _DECODER, AV_CODEC_ID_ ## codec, __VA_ARGS__) |
#define DK3_GET_NEXT_NIBBLE | ( | ) |
#define ADPCM_DECODER_0 | ( | id_, | |
sample_fmts_, | |||
name_, | |||
long_name_ | |||
) |
#define ADPCM_DECODER_1 | ( | id_, | |
sample_fmts_, | |||
name_, | |||
long_name_ | |||
) |
#define ADPCM_DECODER_2 | ( | enabled, | |
codec_id, | |||
name, | |||
sample_fmts, | |||
long_name | |||
) | ADPCM_DECODER_ ## enabled(codec_id, name, sample_fmts, long_name) |
#define ADPCM_DECODER_3 | ( | config, | |
codec_id, | |||
name, | |||
sample_fmts, | |||
long_name | |||
) | ADPCM_DECODER_2(config, codec_id, name, sample_fmts, long_name) |
#define ADPCM_DECODER | ( | codec, | |
name, | |||
sample_fmts, | |||
long_name | |||
) |
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Definition at line 2895 of file adpcm.c.
Referenced by adpcm_decode_init().
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inlinestatic |
Definition at line 379 of file adpcm.c.
Referenced by adpcm_decode_frame().
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inlinestatic |
Definition at line 423 of file adpcm.c.
Referenced by adpcm_decode_frame().
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Definition at line 446 of file adpcm.c.
Referenced by adpcm_decode_frame().
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Definition at line 472 of file adpcm.c.
Referenced by adpcm_decode_frame().
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Definition at line 495 of file adpcm.c.
Referenced by adpcm_decode_frame().
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Definition at line 511 of file adpcm.c.
Referenced by adpcm_decode_frame().
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Definition at line 531 of file adpcm.c.
Referenced by adpcm_decode_frame().
int16_t ff_adpcm_ima_qt_expand_nibble | ( | ADPCMChannelStatus * | c, |
int | nibble | ||
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Definition at line 556 of file adpcm.c.
Referenced by adpcm_decode_frame(), decode_adpcm_ima_hvqm2(), decode_adpcm_ima_hvqm4(), and decode_frame().
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Definition at line 582 of file adpcm.c.
Referenced by adpcm_decode_frame().
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Definition at line 619 of file adpcm.c.
Referenced by adpcm_decode_frame().
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inlinestatic |
Definition at line 662 of file adpcm.c.
Referenced by adpcm_decode_frame().
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Definition at line 681 of file adpcm.c.
Referenced by adpcm_decode_frame().
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Definition at line 702 of file adpcm.c.
Referenced by adpcm_decode_frame().
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Definition at line 723 of file adpcm.c.
Referenced by adpcm_decode_frame().
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Definition at line 743 of file adpcm.c.
Referenced by adpcm_decode_frame().
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Definition at line 757 of file adpcm.c.
Referenced by adpcm_decode_frame().
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Definition at line 766 of file adpcm.c.
Referenced by adpcm_decode_frame().
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Definition at line 787 of file adpcm.c.
Referenced by adpcm_decode_frame().
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Definition at line 822 of file adpcm.c.
Referenced by adpcm_decode_frame().
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Definition at line 910 of file adpcm.c.
Referenced by adpcm_decode_frame().
int16_t ff_adpcm_argo_expand_nibble | ( | ADPCMChannelStatus * | cs, |
int | nibble, | ||
int | shift, | ||
int | flag | ||
) |
Definition at line 968 of file adpcm.c.
Referenced by adpcm_decode_frame(), and adpcm_encode_frame().
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Definition at line 985 of file adpcm.c.
Referenced by adpcm_decode_frame().
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Definition at line 1028 of file adpcm.c.
Referenced by adpcm_decode_frame().
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Definition at line 1087 of file adpcm.c.
Referenced by adpcm_decode_frame().
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Get the number of samples (per channel) that will be decoded from the packet.
In one case, this is actually the maximum number of samples possible to decode with the given buf_size.
[out] | coded_samples | set to the number of samples as coded in the packet, or 0 if the codec does not encode the number of samples in each frame. |
[out] | approx_nb_samples | set to non-zero if the number of samples returned is an approximation. |
Definition at line 1162 of file adpcm.c.
Referenced by adpcm_decode_frame().
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Definition at line 84 of file adpcm.c.
Referenced by adpcm_decode_frame(), and xa_decode().
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Definition at line 92 of file adpcm.c.
Referenced by adpcm_decode_frame().
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Definition at line 97 of file adpcm.c.
Referenced by adpcm_decode_frame().
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Definition at line 111 of file adpcm.c.
Referenced by adpcm_ima_cunning_expand_nibble().
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Definition at line 121 of file adpcm.c.
Referenced by adpcm_ima_cunning_expand_nibble().
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Definition at line 145 of file adpcm.c.
Referenced by adpcm_ima_wav_expand_nibble().
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Definition at line 152 of file adpcm.c.
Referenced by adpcm_mtaf_expand_nibble().
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Definition at line 219 of file adpcm.c.
Referenced by adpcm_ima_oki_expand_nibble().
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Definition at line 228 of file adpcm.c.
Referenced by adpcm_swf_decode().
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Definition at line 235 of file adpcm.c.
Referenced by adpcm_zork_expand_nibble().
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Definition at line 239 of file adpcm.c.
Referenced by adpcm_ima_mtf_expand_nibble().
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