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)
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
const char * r
Definition: vf_curves.c:114
#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.

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

Definition at line 121 of file interplayacm.c.

Referenced by filter_frame(), 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(), and pred8x8l_down_left().

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 461 of file interplayacm.c.

Referenced by decode_block().

static int decode_block ( InterplayACMContext s)
static

Definition at line 514 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 543 of file interplayacm.c.

static av_cold int decode_close ( AVCodecContext avctx)
static

Definition at line 610 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:
= {
k24, k23, t27, k35,
k34, bad, k45, k44,
bad, t37, bad, bad,
}
static int linear(InterplayACMContext *s, unsigned ind, unsigned col)
Definition: interplayacm.c:121
static int k24(InterplayACMContext *s, unsigned ind, unsigned col)
Definition: interplayacm.c:177
static int k35(InterplayACMContext *s, unsigned ind, unsigned col)
Definition: interplayacm.c:221
static int k44(InterplayACMContext *s, unsigned ind, unsigned col)
Definition: interplayacm.c:307
static int t15(InterplayACMContext *s, unsigned ind, unsigned col)
Definition: interplayacm.c:325
static int t27(InterplayACMContext *s, unsigned ind, unsigned col)
Definition: interplayacm.c:354
static int k34(InterplayACMContext *s, unsigned ind, unsigned col)
Definition: interplayacm.c:255
static int zero(InterplayACMContext *s, unsigned ind, unsigned col)
Definition: interplayacm.c:107
static int k12(InterplayACMContext *s, unsigned ind, unsigned col)
Definition: interplayacm.c:159
static int k13(InterplayACMContext *s, unsigned ind, unsigned col)
Definition: interplayacm.c:134
static int t37(InterplayACMContext *s, unsigned ind, unsigned col)
Definition: interplayacm.c:383
static int k23(InterplayACMContext *s, unsigned ind, unsigned col)
Definition: interplayacm.c:203
static int bad(InterplayACMContext *s, unsigned ind, unsigned col)
Definition: interplayacm.c:116
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"),
.init = decode_init,
.close = decode_close,
.decode = decode_frame,
.caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
.priv_data_size = sizeof(InterplayACMContext),
}
#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:48
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *pkt)
Definition: interplayacm.c:543
#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: avcodec.h:1006
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
static av_cold int decode_close(AVCodecContext *avctx)
Definition: interplayacm.c:610
static av_cold int decode_init(AVCodecContext *avctx)
Definition: interplayacm.c:57
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:981

Definition at line 623 of file interplayacm.c.