#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "libavutil/intreadwrite.h"
#include "avcodec.h"
Go to the source code of this file.
Data Structures | |
struct | VmdVideoContext |
struct | VmdAudioContext |
Defines | |
#define | VMD_HEADER_SIZE 0x330 |
#define | PALETTE_COUNT 256 |
#define | QUEUE_SIZE 0x1000 |
#define | QUEUE_MASK 0x0FFF |
Functions | |
static void | lz_unpack (const unsigned char *src, int src_len, unsigned char *dest, int dest_len) |
static int | rle_unpack (const unsigned char *src, unsigned char *dest, int src_count, int src_size, int dest_len) |
static void | vmd_decode (VmdVideoContext *s) |
static av_cold int | vmdvideo_decode_init (AVCodecContext *avctx) |
static int | vmdvideo_decode_frame (AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt) |
static av_cold int | vmdvideo_decode_end (AVCodecContext *avctx) |
static av_cold int | vmdaudio_decode_init (AVCodecContext *avctx) |
static void | vmdaudio_decode_audio (VmdAudioContext *s, unsigned char *data, const uint8_t *buf, int buf_size, int stereo) |
static int | vmdaudio_loadsound (VmdAudioContext *s, unsigned char *data, const uint8_t *buf, int silence, int data_size) |
static int | vmdaudio_decode_frame (AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt) |
Variables | |
static const uint16_t | vmdaudio_table [128] |
AVCodec | vmdvideo_decoder |
AVCodec | vmdaudio_decoder |
The video decoder outputs PAL8 colorspace data. The decoder expects a 0x330-byte VMD file header to be transmitted via extradata during codec initialization. Each encoded frame that is sent to this decoder is expected to be prepended with the appropriate 16-byte frame information record from the VMD file.
The audio decoder, like the video decoder, expects each encoded data chunk to be prepended with the appropriate 16-byte frame information record from the VMD file. It does not require the 0x330-byte VMD file header, but it does need the audio setup parameters passed in through normal libavcodec API means.
Definition in file vmdav.c.
#define QUEUE_MASK 0x0FFF |
#define QUEUE_SIZE 0x1000 |
#define VMD_HEADER_SIZE 0x330 |
Definition at line 49 of file vmdav.c.
Referenced by vmd_probe(), vmd_read_header(), and vmdvideo_decode_init().
static void lz_unpack | ( | const unsigned char * | src, | |
int | src_len, | |||
unsigned char * | dest, | |||
int | dest_len | |||
) | [static] |
static int rle_unpack | ( | const unsigned char * | src, | |
unsigned char * | dest, | |||
int | src_count, | |||
int | src_size, | |||
int | dest_len | |||
) | [static] |
static void vmd_decode | ( | VmdVideoContext * | s | ) | [static] |
static void vmdaudio_decode_audio | ( | VmdAudioContext * | s, | |
unsigned char * | data, | |||
const uint8_t * | buf, | |||
int | buf_size, | |||
int | stereo | |||
) | [static] |
static int vmdaudio_decode_frame | ( | AVCodecContext * | avctx, | |
void * | data, | |||
int * | data_size, | |||
AVPacket * | avpkt | |||
) | [static] |
static av_cold int vmdaudio_decode_init | ( | AVCodecContext * | avctx | ) | [static] |
static int vmdaudio_loadsound | ( | VmdAudioContext * | s, | |
unsigned char * | data, | |||
const uint8_t * | buf, | |||
int | silence, | |||
int | data_size | |||
) | [static] |
static av_cold int vmdvideo_decode_end | ( | AVCodecContext * | avctx | ) | [static] |
static int vmdvideo_decode_frame | ( | AVCodecContext * | avctx, | |
void * | data, | |||
int * | data_size, | |||
AVPacket * | avpkt | |||
) | [static] |
static av_cold int vmdvideo_decode_init | ( | AVCodecContext * | avctx | ) | [static] |
Initial value:
{ "vmdaudio", AVMEDIA_TYPE_AUDIO, CODEC_ID_VMDAUDIO, sizeof(VmdAudioContext), vmdaudio_decode_init, NULL, NULL, vmdaudio_decode_frame, .long_name = NULL_IF_CONFIG_SMALL("Sierra VMD audio"), }
const uint16_t vmdaudio_table[128] [static] |
Initial value:
{ 0x000, 0x008, 0x010, 0x020, 0x030, 0x040, 0x050, 0x060, 0x070, 0x080, 0x090, 0x0A0, 0x0B0, 0x0C0, 0x0D0, 0x0E0, 0x0F0, 0x100, 0x110, 0x120, 0x130, 0x140, 0x150, 0x160, 0x170, 0x180, 0x190, 0x1A0, 0x1B0, 0x1C0, 0x1D0, 0x1E0, 0x1F0, 0x200, 0x208, 0x210, 0x218, 0x220, 0x228, 0x230, 0x238, 0x240, 0x248, 0x250, 0x258, 0x260, 0x268, 0x270, 0x278, 0x280, 0x288, 0x290, 0x298, 0x2A0, 0x2A8, 0x2B0, 0x2B8, 0x2C0, 0x2C8, 0x2D0, 0x2D8, 0x2E0, 0x2E8, 0x2F0, 0x2F8, 0x300, 0x308, 0x310, 0x318, 0x320, 0x328, 0x330, 0x338, 0x340, 0x348, 0x350, 0x358, 0x360, 0x368, 0x370, 0x378, 0x380, 0x388, 0x390, 0x398, 0x3A0, 0x3A8, 0x3B0, 0x3B8, 0x3C0, 0x3C8, 0x3D0, 0x3D8, 0x3E0, 0x3E8, 0x3F0, 0x3F8, 0x400, 0x440, 0x480, 0x4C0, 0x500, 0x540, 0x580, 0x5C0, 0x600, 0x640, 0x680, 0x6C0, 0x700, 0x740, 0x780, 0x7C0, 0x800, 0x900, 0xA00, 0xB00, 0xC00, 0xD00, 0xE00, 0xF00, 0x1000, 0x1400, 0x1800, 0x1C00, 0x2000, 0x3000, 0x4000 }
Definition at line 481 of file vmdav.c.
Referenced by vmdaudio_decode_audio().
Initial value:
{ "vmdvideo", AVMEDIA_TYPE_VIDEO, CODEC_ID_VMDVIDEO, sizeof(VmdVideoContext), vmdvideo_decode_init, NULL, vmdvideo_decode_end, vmdvideo_decode_frame, CODEC_CAP_DR1, .long_name = NULL_IF_CONFIG_SMALL("Sierra VMD video"), }