mimic.c File Reference

#include <stdint.h>
#include "libavutil/mem_internal.h"
#include "libavutil/thread.h"
#include "avcodec.h"
#include "blockdsp.h"
#include "codec_internal.h"
#include "decode.h"
#include "get_bits.h"
#include "bytestream.h"
#include "bswapdsp.h"
#include "hpeldsp.h"
#include "idctdsp.h"
#include "thread.h"
#include "threadframe.h"

Go to the source code of this file.

Data Structures
struct	MimicContext

Macros
#define	MIMIC_HEADER_SIZE   20
#define	MIMIC_VLC_BITS   11

Functions
static av_cold int	mimic_decode_end (AVCodecContext *avctx)
static av_cold void	mimic_init_static (void)
static av_cold int	mimic_decode_init (AVCodecContext *avctx)
static int	vlc_decode_block (MimicContext *ctx, int num_coeffs, int qscale)
static int	decode (MimicContext *ctx, int quality, int num_coeffs, int is_iframe)
static void	flip_swap_frame (AVFrame *f)
	Flip the buffer upside-down and put it in the YVU order to revert the way Mimic encodes frames. More...
static int	mimic_decode_frame (AVCodecContext *avctx, AVFrame *rframe, int *got_frame, AVPacket *avpkt)

Variables
static VLC	block_vlc
static const uint8_t	huffsyms []
static const uint8_t	huffbits []
static const uint8_t	col_zag [64]
static const int8_t	vlcdec_lookup [9][64]
const FFCodec	ff_mimic_decoder

Macro Definition Documentation

MIMIC_HEADER_SIZE

#define MIMIC_HEADER_SIZE   20

Definition at line 39 of file mimic.c.

MIMIC_VLC_BITS

#define MIMIC_VLC_BITS   11

Definition at line 40 of file mimic.c.

Function Documentation

mimic_decode_end()

static av_cold int mimic_decode_end ( AVCodecContext *  avctx )

static

Definition at line 104 of file mimic.c.

mimic_init_static()

static av_cold void mimic_init_static ( void  )

static

Definition at line 121 of file mimic.c.

Referenced by mimic_decode_init().

mimic_decode_init()

static av_cold int mimic_decode_init ( AVCodecContext *  avctx )

static

Definition at line 127 of file mimic.c.

vlc_decode_block()

static int vlc_decode_block ( MimicContext *  ctx, int  num_coeffs, int  qscale  )

static

Definition at line 215 of file mimic.c.

Referenced by decode().

decode()

static int decode ( MimicContext *  ctx, int  quality, int  num_coeffs, int  is_iframe  )

static

Definition at line 259 of file mimic.c.

Referenced by mimic_decode_frame().

flip_swap_frame()

static void flip_swap_frame ( AVFrame *  f )

static

Flip the buffer upside-down and put it in the YVU order to revert the way Mimic encodes frames.

Definition at line 330 of file mimic.c.

Referenced by mimic_decode_frame().

mimic_decode_frame()

static int mimic_decode_frame ( AVCodecContext *  avctx, AVFrame *  rframe, int *  got_frame, AVPacket *  avpkt  )

static

Definition at line 341 of file mimic.c.

Variable Documentation

block_vlc

VLC block_vlc

static

Definition at line 70 of file mimic.c.

Referenced by mimic_init_static(), and vlc_decode_block().

huffsyms

const uint8_t huffsyms[]

static

Initial value:

= {
    0x10, 0x20, 0x30, 0x00, 0x11, 0x40, 0x50, 0x12, 0x13, 0x21, 0x31, 0x60,
    0x14, 0x15, 0x16, 0x22, 0x41, 0x17, 0x18, 0x23, 0x24, 0x25, 0x32, 0x42,
    0x51, 0x61, 0x70, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x26, 0x27,
    0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x33, 0x34, 0x35, 0x36, 0x37,
    0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x43, 0x44, 0x45, 0x46, 0x47,
    0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x52, 0x53, 0x54, 0x55, 0x56,
    0x57, 0x58, 0x59, 0x5A, 0x5B, 0x5C, 0x5D, 0x5E, 0x62, 0x63, 0x64, 0x65,
    0x66, 0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x71, 0x72, 0x73,
    0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x7B, 0x7C, 0x7D, 0x7E,
}

Definition at line 72 of file mimic.c.

Referenced by mimic_init_static().

huffbits

const uint8_t huffbits[]

static

Initial value:

= {
     2,  2,  3,  4,  4,  4,  5,  5,  6,  6,  6,  6,  7,  7,  7,  7,  8,  8,
     8,  8,  9,  9,  9,  9, 10, 10, 10, 10, 11, 11, 11, 11, 12, 12, 12, 12,
    13, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16, 17, 17,
    17, 17, 18, 18, 18, 18, 19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21,
    22, 22, 22, 22, 23, 23, 23, 23, 24, 24, 24, 24, 25, 25, 25, 25, 26, 26,
    26, 26, 27, 27, 27, 27, 28, 28, 28, 28, 29, 29, 29, 29, 30, 30, 30,
}

Definition at line 84 of file mimic.c.

Referenced by mimic_init_static().

col_zag

const uint8_t col_zag[64]

static

Initial value:

= {
     0,  8,  1,  2,  9, 16, 24, 17,
    10,  3,  4, 11, 18, 25, 32, 40,
    33, 26, 19, 12,  5,  6, 13, 20,
    27, 34, 41, 48, 56, 49, 42, 35,
    28, 21, 14,  7, 15, 22, 29, 36,
    43, 50, 57, 58, 51, 44, 37, 30,
    23, 31, 38, 45, 52, 59, 39, 46,
    53, 60, 61, 54, 47, 55, 62, 63,
}

Definition at line 93 of file mimic.c.

Referenced by mimic_decode_init().

vlcdec_lookup

const int8_t vlcdec_lookup[9][64]

static

Definition at line 178 of file mimic.c.

Referenced by vlc_decode_block().

ff_mimic_decoder

const FFCodec ff_mimic_decoder

Initial value:

= {
    .p.name                = "mimic",
    CODEC_LONG_NAME("Mimic"),
    .p.type                = AVMEDIA_TYPE_VIDEO,
    .p.id                  = AV_CODEC_ID_MIMIC,
    .priv_data_size        = sizeof(MimicContext),
    .init                  = mimic_decode_init,
    .close                 = mimic_decode_end,
    FF_CODEC_DECODE_CB(mimic_decode_frame),
    .p.capabilities        = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
    UPDATE_THREAD_CONTEXT(mimic_decode_update_thread_context),
    .caps_internal         = FF_CODEC_CAP_ALLOCATE_PROGRESS |
                             FF_CODEC_CAP_INIT_CLEANUP,
}

Definition at line 439 of file mimic.c.