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)

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 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:

= {
    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 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),
}

Definition at line 623 of file interplayacm.c.