#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 |
| #define | BLOCK_TYPE_AUDIO 1 |
| #define | BLOCK_TYPE_INITIAL 2 |
| #define | BLOCK_TYPE_SILENCE 3 |
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, int src_len, int src_count, unsigned char *dest, 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 | decode_audio_s16 (int16_t *out, const uint8_t *buf, int buf_size, int channels) |
| static int | vmdaudio_decode_frame (AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *avpkt) |
Variables | |
| static const uint16_t | vmdaudio_table [128] |
| AVCodec | ff_vmdvideo_decoder |
| AVCodec | ff_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 BLOCK_TYPE_INITIAL 2 |
| #define BLOCK_TYPE_SILENCE 3 |
| #define QUEUE_MASK 0x0FFF |
| #define QUEUE_SIZE 0x1000 |
Definition at line 72 of file vmdav.c.
Referenced by filter_samples(), lz_unpack(), send_next(), and send_out().
| #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, | |
| int | src_len, | |||
| int | src_count, | |||
| unsigned char * | dest, | |||
| int | dest_len | |||
| ) | [static] |
| static void vmd_decode | ( | VmdVideoContext * | s | ) | [static] |
| static int vmdaudio_decode_frame | ( | AVCodecContext * | avctx, | |
| void * | data, | |||
| int * | got_frame_ptr, | |||
| AVPacket * | avpkt | |||
| ) | [static] |
| static av_cold int vmdaudio_decode_init | ( | AVCodecContext * | avctx | ) | [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:
{
.name = "vmdaudio",
.type = AVMEDIA_TYPE_AUDIO,
.id = CODEC_ID_VMDAUDIO,
.priv_data_size = sizeof(VmdAudioContext),
.init = vmdaudio_decode_init,
.decode = vmdaudio_decode_frame,
.capabilities = CODEC_CAP_DR1,
.long_name = NULL_IF_CONFIG_SMALL("Sierra VMD audio"),
}
Initial value:
{
.name = "vmdvideo",
.type = AVMEDIA_TYPE_VIDEO,
.id = CODEC_ID_VMDVIDEO,
.priv_data_size = sizeof(VmdVideoContext),
.init = vmdvideo_decode_init,
.close = vmdvideo_decode_end,
.decode = vmdvideo_decode_frame,
.capabilities = CODEC_CAP_DR1,
.long_name = NULL_IF_CONFIG_SMALL("Sierra VMD video"),
}
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 474 of file vmdav.c.
Referenced by decode_audio_s16().
1.5.8