FFmpeg
Data Structures | Macros | Typedefs | Functions | Variables
interplayacm.c File Reference
#include "libavutil/intreadwrite.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 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 []
 
AVCodec ff_interplay_acm_decoder
 

Macro Definition Documentation

#define BITSTREAM_READER_LE

Definition at line 23 of file interplayacm.c.

#define set_pos (   s,
  r,
  c,
  idx 
)
Value:
do { \
unsigned pos = ((r) << s->level) + (c); \
s->block[pos] = s->midbuf[(idx)]; \
} while (0)
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
r
const char * r
Definition: vf_curves.c:116
pos
unsigned int pos
Definition: spdifenc.c:412
s
#define s(width, name)
Definition: cbs_vp9.c:257

Definition at line 102 of file interplayacm.c.

Referenced by k12(), k13(), k23(), k24(), k34(), k35(), k44(), k45(), linear(), t15(), t27(), t37(), and zero().

Typedef Documentation

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

Definition at line 407 of file interplayacm.c.

Function Documentation

static av_cold int decode_init ( AVCodecContext *  avctx)
static

Definition at line 57 of file interplayacm.c.

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

Definition at line 107 of file interplayacm.c.

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

Definition at line 116 of file interplayacm.c.

Referenced by amv_init().

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

Definition at line 121 of file interplayacm.c.

Referenced by process_command(), and resample_init().

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

Definition at line 134 of file interplayacm.c.

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

Definition at line 159 of file interplayacm.c.

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

Definition at line 177 of file interplayacm.c.

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

Definition at line 203 of file interplayacm.c.

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

Definition at line 221 of file interplayacm.c.

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

Definition at line 255 of file interplayacm.c.

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

Definition at line 280 of file interplayacm.c.

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

Definition at line 307 of file interplayacm.c.

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

Definition at line 325 of file interplayacm.c.

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

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

Definition at line 354 of file interplayacm.c.

Referenced by itxfm_wrap().

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

Definition at line 383 of file interplayacm.c.

static int fill_block ( InterplayACMContext *  s)
static

Definition at line 420 of file interplayacm.c.

Referenced by decode_block().

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

Definition at line 435 of file interplayacm.c.

Referenced by juggle_block().

static void juggle_block ( InterplayACMContext *  s)
static

Definition at line 462 of file interplayacm.c.

Referenced by decode_block().

static int decode_block ( InterplayACMContext *  s)
static

Definition at line 515 of file interplayacm.c.

Referenced by decode_frame().

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

Definition at line 544 of file interplayacm.c.

static av_cold int decode_close ( AVCodecContext *  avctx)
static

Definition at line 611 of file interplayacm.c.

Variable Documentation

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

Definition at line 28 of file interplayacm.c.

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

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

Definition at line 29 of file interplayacm.c.

Referenced by k23(), and k24().

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

Definition at line 30 of file interplayacm.c.

Referenced by k34(), and k35().

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

Definition at line 31 of file interplayacm.c.

Referenced by k44(), and k45().

int mul_3x3[3 *3 *3]
static

Definition at line 33 of file interplayacm.c.

Referenced by decode_init(), and t15().

int mul_3x5[5 *5 *5]
static

Definition at line 34 of file interplayacm.c.

Referenced by decode_init(), and t27().

int mul_2x11[11 *11]
static

Definition at line 35 of file interplayacm.c.

Referenced by decode_init(), and t37().

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,
}
linear
static int linear(InterplayACMContext *s, unsigned ind, unsigned col)
Definition: interplayacm.c:121
k24
static int k24(InterplayACMContext *s, unsigned ind, unsigned col)
Definition: interplayacm.c:177
k35
static int k35(InterplayACMContext *s, unsigned ind, unsigned col)
Definition: interplayacm.c:221
k44
static int k44(InterplayACMContext *s, unsigned ind, unsigned col)
Definition: interplayacm.c:307
t15
static int t15(InterplayACMContext *s, unsigned ind, unsigned col)
Definition: interplayacm.c:325
t27
static int t27(InterplayACMContext *s, unsigned ind, unsigned col)
Definition: interplayacm.c:354
k34
static int k34(InterplayACMContext *s, unsigned ind, unsigned col)
Definition: interplayacm.c:255
zero
static int zero(InterplayACMContext *s, unsigned ind, unsigned col)
Definition: interplayacm.c:107
k12
static int k12(InterplayACMContext *s, unsigned ind, unsigned col)
Definition: interplayacm.c:159
k13
static int k13(InterplayACMContext *s, unsigned ind, unsigned col)
Definition: interplayacm.c:134
t37
static int t37(InterplayACMContext *s, unsigned ind, unsigned col)
Definition: interplayacm.c:383
k23
static int k23(InterplayACMContext *s, unsigned ind, unsigned col)
Definition: interplayacm.c:203
bad
static int bad(InterplayACMContext *s, unsigned ind, unsigned col)
Definition: interplayacm.c:116
k45
static int k45(InterplayACMContext *s, unsigned ind, unsigned col)
Definition: interplayacm.c:280

Definition at line 409 of file interplayacm.c.

Referenced by fill_block().

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_CLEANUP,
.priv_data_size = sizeof(InterplayACMContext),
}
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:49
decode_frame
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *pkt)
Definition: interplayacm.c:544
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:77
AV_CODEC_ID_INTERPLAY_ACM
Definition: codec_id.h:503
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
decode_close
static av_cold int decode_close(AVCodecContext *avctx)
Definition: interplayacm.c:611
AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
decode_init
static av_cold int decode_init(AVCodecContext *avctx)
Definition: interplayacm.c:57
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

Definition at line 624 of file interplayacm.c.

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