FFmpeg
Data Structures | Macros | Functions | Variables
mvha.c File Reference
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "libavutil/intreadwrite.h"
#include "avcodec.h"
#include "bytestream.h"
#include "get_bits.h"
#include "internal.h"
#include "lossless_videodsp.h"
#include <zlib.h>

Go to the source code of this file.

Data Structures

struct  MVHAContext
 
struct  Node
 

Macros

#define CACHED_BITSTREAM_READER   !ARCH_X86_32
 

Functions

static void get_tree_codes (uint32_t *bits, int16_t *lens, uint8_t *xlat, Node *nodes, int node, uint32_t pfx, int pl, int *pos)
 
static int build_vlc (AVCodecContext *avctx, VLC *vlc)
 
static int decode_frame (AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
 
static av_cold int decode_init (AVCodecContext *avctx)
 
static av_cold int decode_close (AVCodecContext *avctx)
 

Variables

const AVCodec ff_mvha_decoder
 

Macro Definition Documentation

◆ CACHED_BITSTREAM_READER

#define CACHED_BITSTREAM_READER   !ARCH_X86_32

Definition at line 27 of file mvha.c.

Function Documentation

◆ get_tree_codes()

static void get_tree_codes ( uint32_t *  bits,
int16_t *  lens,
uint8_t *  xlat,
Node nodes,
int  node,
uint32_t  pfx,
int  pl,
int pos 
)
static

Definition at line 57 of file mvha.c.

Referenced by build_vlc().

◆ build_vlc()

static int build_vlc ( AVCodecContext avctx,
VLC vlc 
)
static

Definition at line 80 of file mvha.c.

Referenced by decode_frame().

◆ decode_frame()

static int decode_frame ( AVCodecContext avctx,
void *  data,
int got_frame,
AVPacket avpkt 
)
static

Definition at line 149 of file mvha.c.

◆ decode_init()

static av_cold int decode_init ( AVCodecContext avctx)
static

Definition at line 279 of file mvha.c.

◆ decode_close()

static av_cold int decode_close ( AVCodecContext avctx)
static

Definition at line 300 of file mvha.c.

Variable Documentation

◆ ff_mvha_decoder

const AVCodec ff_mvha_decoder
Initial value:
= {
.name = "mvha",
.long_name = NULL_IF_CONFIG_SMALL("MidiVid Archive Codec"),
.priv_data_size = sizeof(MVHAContext),
.close = decode_close,
.capabilities = AV_CODEC_CAP_DR1,
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE |
}

Definition at line 310 of file mvha.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:41
init
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:31
decode_close
static av_cold int decode_close(AVCodecContext *avctx)
Definition: mvha.c:300
decode
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
Definition: decode_audio.c:71
decode_init
static av_cold int decode_init(AVCodecContext *avctx)
Definition: mvha.c:279
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
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
AV_CODEC_ID_MVHA
@ AV_CODEC_ID_MVHA
Definition: codec_id.h:297
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
decode_frame
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: mvha.c:149
MVHAContext
Definition: mvha.c:38