FFmpeg: libavcodec/interplayacm.c File Reference

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libavcodec

Data Structures | Macros | Typedefs | Functions | Variables

interplayacm.c File Reference

#include "libavutil/intreadwrite.h"
#include "libavutil/thread.h"
#include "avcodec.h"
#include "get_bits.h"
#include "internal.h"

Go to the source code of this file.

Data Structures

struct InterplayACMContext

Macros

#define BITSTREAM_READER_LE

#define set_pos(s, r, c, idx)

Typedefs

typedef int(* filler) (InterplayACMContext *s, unsigned ind, unsigned col)

Functions

static av_cold void decode_init_static (void)

static av_cold int decode_init (AVCodecContext *avctx)

static int zero (InterplayACMContext *s, unsigned ind, unsigned col)

static int bad (InterplayACMContext *s, unsigned ind, unsigned col)

static int linear (InterplayACMContext *s, unsigned ind, unsigned col)

static int k13 (InterplayACMContext *s, unsigned ind, unsigned col)

static int k12 (InterplayACMContext *s, unsigned ind, unsigned col)

static int k24 (InterplayACMContext *s, unsigned ind, unsigned col)

static int k23 (InterplayACMContext *s, unsigned ind, unsigned col)

static int k35 (InterplayACMContext *s, unsigned ind, unsigned col)

static int k34 (InterplayACMContext *s, unsigned ind, unsigned col)

static int k45 (InterplayACMContext *s, unsigned ind, unsigned col)

static int k44 (InterplayACMContext *s, unsigned ind, unsigned col)

static int t15 (InterplayACMContext *s, unsigned ind, unsigned col)

static int t27 (InterplayACMContext *s, unsigned ind, unsigned col)

static int t37 (InterplayACMContext *s, unsigned ind, unsigned col)

static int fill_block (InterplayACMContext *s)

static void juggle (int *wrap_p, int *block_p, unsigned sub_len, unsigned sub_count)

static void juggle_block (InterplayACMContext *s)

static int decode_block (InterplayACMContext *s)

static int decode_frame (AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *pkt)

static av_cold int decode_close (AVCodecContext *avctx)

Variables

static const int8_t map_1bit [] = { -1, +1 }

static const int8_t map_2bit_near [] = { -2, -1, +1, +2 }

static const int8_t map_2bit_far [] = { -3, -2, +2, +3 }

static const int8_t map_3bit [] = { -4, -3, -2, -1, +1, +2, +3, +4 }

static int mul_3x3 [3 *3 *3]

static int mul_3x5 [5 *5 *5]

static int mul_2x11 [11 *11]

static const filler filler_list []

const AVCodec ff_interplay_acm_decoder

Macro Definition Documentation

◆ BITSTREAM_READER_LE

#define BITSTREAM_READER_LE

Definition at line 24 of file interplayacm.c.

◆ set_pos

#define set_pos ( s,

r,

c,

idx

)

Value:

do { \

unsigned pos = ((r) << s->level) + (c); \

s->block[pos] = s->midbuf[(idx)]; \

} while (0)

Definition at line 112 of file interplayacm.c.

Typedef Documentation

◆ filler

typedef int(* filler) (InterplayACMContext *s, unsigned ind, unsigned col)

Definition at line 417 of file interplayacm.c.

Function Documentation

◆ decode_init_static()

static av_cold void decode_init_static ( void )

static

Definition at line 59 of file interplayacm.c.

Referenced by decode_init().

◆ decode_init()

static av_cold int decode_init ( AVCodecContext * avctx )

static

Definition at line 74 of file interplayacm.c.

◆ zero()

static int zero ( InterplayACMContext * s,

unsigned ind,

unsigned col

)

static

Definition at line 117 of file interplayacm.c.

◆ bad()

static int bad ( InterplayACMContext * s,

unsigned ind,

unsigned col

)

static

Definition at line 126 of file interplayacm.c.

Referenced by amv_init().

◆ linear()

static int linear ( InterplayACMContext * s,

unsigned ind,

unsigned col

)

static

Definition at line 131 of file interplayacm.c.

Referenced by pixfmt_is_supported(), and resample_init().

◆ k13()

static int k13 ( InterplayACMContext * s,

unsigned ind,

unsigned col

)

static

Definition at line 144 of file interplayacm.c.

◆ k12()

static int k12 ( InterplayACMContext * s,

unsigned ind,

unsigned col

)

static

Definition at line 169 of file interplayacm.c.

◆ k24()

static int k24 ( InterplayACMContext * s,

unsigned ind,

unsigned col

)

static

Definition at line 187 of file interplayacm.c.

◆ k23()

static int k23 ( InterplayACMContext * s,

unsigned ind,

unsigned col

)

static

Definition at line 213 of file interplayacm.c.

◆ k35()

static int k35 ( InterplayACMContext * s,

unsigned ind,

unsigned col

)

static

Definition at line 231 of file interplayacm.c.

◆ k34()

static int k34 ( InterplayACMContext * s,

unsigned ind,

unsigned col

)

static

Definition at line 265 of file interplayacm.c.

◆ k45()

static int k45 ( InterplayACMContext * s,

unsigned ind,

unsigned col

)

static

Definition at line 290 of file interplayacm.c.

◆ k44()

static int k44 ( InterplayACMContext * s,

unsigned ind,

unsigned col

)

static

Definition at line 317 of file interplayacm.c.

◆ t15()

static int t15 ( InterplayACMContext * s,

unsigned ind,

unsigned col

)

static

Definition at line 335 of file interplayacm.c.

Referenced by iadst16_1d(), itxfm_wrap(), pred8x8l_down_left(), and put_vc1_mspel_mc_h_v_msa().

◆ t27()

static int t27 ( InterplayACMContext * s,

unsigned ind,

unsigned col

)

static

Definition at line 364 of file interplayacm.c.

Referenced by itxfm_wrap().

◆ t37()

static int t37 ( InterplayACMContext * s,

unsigned ind,

unsigned col

)

static

Definition at line 393 of file interplayacm.c.

◆ fill_block()

static int fill_block ( InterplayACMContext * s )

static

Definition at line 430 of file interplayacm.c.

Referenced by decode_block().

◆ juggle()

static void juggle ( int * wrap_p,

int * block_p,

unsigned sub_len,

unsigned sub_count

)

static

Definition at line 445 of file interplayacm.c.

Referenced by juggle_block().

◆ juggle_block()

static void juggle_block ( InterplayACMContext * s )

static

Definition at line 472 of file interplayacm.c.

Referenced by decode_block().

◆ decode_block()

static int decode_block ( InterplayACMContext * s )

static

Definition at line 525 of file interplayacm.c.

Referenced by decode_frame().

◆ decode_frame()

static int decode_frame ( AVCodecContext * avctx,

void * data,

int * got_frame_ptr,

AVPacket * pkt

)

static

Definition at line 554 of file interplayacm.c.

◆ decode_close()

static av_cold int decode_close ( AVCodecContext * avctx )

static

Definition at line 622 of file interplayacm.c.

Variable Documentation

◆ map_1bit

const int8_t map_1bit[] = { -1, +1 }

static

Definition at line 29 of file interplayacm.c.

Referenced by k12(), k13(), k34(), and k35().

◆ map_2bit_near

const int8_t map_2bit_near[] = { -2, -1, +1, +2 }

static

Definition at line 30 of file interplayacm.c.

Referenced by k23(), and k24().

◆ map_2bit_far

const int8_t map_2bit_far[] = { -3, -2, +2, +3 }

static

Definition at line 31 of file interplayacm.c.

Referenced by k34(), and k35().

◆ map_3bit

const int8_t map_3bit[] = { -4, -3, -2, -1, +1, +2, +3, +4 }

static

Definition at line 32 of file interplayacm.c.

Referenced by k44(), and k45().

◆ mul_3x3

int mul_3x3[3 *3 *3]

static

Definition at line 34 of file interplayacm.c.

Referenced by decode_init_static(), and t15().

◆ mul_3x5

int mul_3x5[5 *5 *5]

static

Definition at line 35 of file interplayacm.c.

Referenced by decode_init_static(), and t27().

◆ mul_2x11

int mul_2x11[11 * 11]

static

Definition at line 36 of file interplayacm.c.

Referenced by decode_init_static(), and t37().

◆ filler_list

const filler filler_list[]

static

Initial value:

= {

zero, bad, bad, linear,

linear, linear, linear, linear,

linear, linear, linear, linear,

linear, linear, linear, linear,

linear, k13, k12, t15,

k24, k23, t27, k35,

k34, bad, k45, k44,

bad, t37, bad, bad,

}

Definition at line 419 of file interplayacm.c.

Referenced by fill_block().

◆ ff_interplay_acm_decoder

const AVCodec ff_interplay_acm_decoder

Initial value:

= {

.name = "interplayacm",

.long_name = NULL_IF_CONFIG_SMALL("Interplay ACM"),

.type = AVMEDIA_TYPE_AUDIO,

.id = AV_CODEC_ID_INTERPLAY_ACM,

.init = decode_init,

.close = decode_close,

.decode = decode_frame,

.capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_DR1,

.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,

.priv_data_size = sizeof(InterplayACMContext),

}

Definition at line 635 of file interplayacm.c.

FF_CODEC_CAP_INIT_THREADSAFE

#define FF_CODEC_CAP_INIT_THREADSAFE

The codec does not modify any global variables in the init function, allowing to call the init functi...

Definition: internal.h:42

r

const char * r

Definition: vf_curves.c:116

static int k45(InterplayACMContext *s, unsigned ind, unsigned col)

Definition: interplayacm.c:290

AV_CODEC_ID_INTERPLAY_ACM

@ AV_CODEC_ID_INTERPLAY_ACM

Definition: codec_id.h:501

static int linear(InterplayACMContext *s, unsigned ind, unsigned col)

Definition: interplayacm.c:131

static int k44(InterplayACMContext *s, unsigned ind, unsigned col)

Definition: interplayacm.c:317

static int t15(InterplayACMContext *s, unsigned ind, unsigned col)

Definition: interplayacm.c:335

s

#define s(width, name)

Definition: cbs_vp9.c:257

static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *pkt)

Definition: interplayacm.c:554

AVMEDIA_TYPE_AUDIO

@ AVMEDIA_TYPE_AUDIO

Definition: avutil.h:202

static int k35(InterplayACMContext *s, unsigned ind, unsigned col)

Definition: interplayacm.c:231

static int k34(InterplayACMContext *s, unsigned ind, unsigned col)

Definition: interplayacm.c:265

static av_cold int decode_init(AVCodecContext *avctx)

Definition: interplayacm.c:74

static int k12(InterplayACMContext *s, unsigned ind, unsigned col)

Definition: interplayacm.c:169

static av_cold int decode_close(AVCodecContext *avctx)

Definition: interplayacm.c:622

InterplayACMContext

Definition: interplayacm.c:38

c

Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c

Definition: undefined.txt:32

AV_CODEC_CAP_DR1

#define AV_CODEC_CAP_DR1

Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.

Definition: codec.h:52

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:117

static int t27(InterplayACMContext *s, unsigned ind, unsigned col)

Definition: interplayacm.c:364

static int zero(InterplayACMContext *s, unsigned ind, unsigned col)

Definition: interplayacm.c:117

static int k23(InterplayACMContext *s, unsigned ind, unsigned col)

Definition: interplayacm.c:213

FF_CODEC_CAP_INIT_CLEANUP

#define FF_CODEC_CAP_INIT_CLEANUP

The codec allows calling the close function for deallocation even if the init function returned a fai...

Definition: internal.h:50

unsigned int pos

Definition: spdifenc.c:412

static int t37(InterplayACMContext *s, unsigned ind, unsigned col)

Definition: interplayacm.c:393

static int k13(InterplayACMContext *s, unsigned ind, unsigned col)

Definition: interplayacm.c:144

AV_CODEC_CAP_DELAY

#define AV_CODEC_CAP_DELAY

Encoder or decoder requires flushing with NULL input at the end in order to give the complete and cor...

Definition: codec.h:82

static int bad(InterplayACMContext *s, unsigned ind, unsigned col)

Definition: interplayacm.c:126

static int k24(InterplayACMContext *s, unsigned ind, unsigned col)

Definition: interplayacm.c:187

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