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VMware Video decoder (fourcc: VMnc)

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Originally committed as revision 6171 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Kostya Shishkov 2006-09-05 04:37:14 +00:00
parent 353e433b96
commit eb57c88973
8 changed files with 338 additions and 2 deletions
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1
Changelog
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@ -55,6 +55,7 @@ version <next>
- VC-1/WMV3/WMV9 video decoder
- MacIntel support
- AVISynth support
- VMware video decoder
version 0.4.9-pre1:

1
MAINTAINERS
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@ -162,6 +162,7 @@ Codecs:
ulti* Kostya Shishkov
vc1* Kostya Shishkov
vcr1.c Michael Niedermayer
vmnc.c Kostya Shishkov
vp3* Mike Melanson
vqavideo.c Mike Melanson
wmv2.c Michael Niedermayer

1
doc/ffmpeg-doc.texi
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@ -815,6 +815,7 @@ following image formats are supported:
@item Smacker Video @tab @tab X @tab Video encoding used in Smacker.
@item RTjpeg @tab @tab X @tab Video encoding used in NuppelVideo files.
@item KMVC @tab @tab X @tab Codec used in Worms games.
@item VMware Video @tab @tab X @tab Codec used in videos captured by VMware.
@end multitable
@code{X} means that encoding (resp. decoding) is supported.

1
libavcodec/Makefile
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@ -120,6 +120,7 @@ OBJS-$(CONFIG_VCR1_DECODER) += vcr1.o
OBJS-$(CONFIG_VCR1_ENCODER) += vcr1.o
OBJS-$(CONFIG_VMDAUDIO_DECODER) += vmdav.o
OBJS-$(CONFIG_VMDVIDEO_DECODER) += vmdav.o
OBJS-$(CONFIG_VMNC_DECODER) += vmnc.o
OBJS-$(CONFIG_VORBIS_DECODER) += vorbis.o
OBJS-$(CONFIG_VP3_DECODER) += vp3.o
OBJS-$(CONFIG_VQA_DECODER) += vqavideo.o

3
libavcodec/allcodecs.c
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@ -528,6 +528,9 @@ void avcodec_register_all(void)
#ifdef CONFIG_FLASHSV_DECODER
register_avcodec(&flashsv_decoder);
#endif //CONFIG_FLASHSV_DECODER
#ifdef CONFIG_VMNC_DECODER
register_avcodec(&vmnc_decoder);
#endif //CONFIG_VMNC_DECODER
#endif /* CONFIG_DECODERS */
#if defined(CONFIG_AMR_NB) || defined(CONFIG_AMR_NB_FIXED)

6
libavcodec/avcodec.h
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@ -17,8 +17,8 @@ extern "C" {
#define AV_STRINGIFY(s) AV_TOSTRING(s)
#define AV_TOSTRING(s) #s
#define LIBAVCODEC_VERSION_INT ((51<<16)+(12<<8)+0)
#define LIBAVCODEC_VERSION 51.12.0
#define LIBAVCODEC_VERSION_INT ((51<<16)+(13<<8)+0)
#define LIBAVCODEC_VERSION 51.13.0
#define LIBAVCODEC_BUILD LIBAVCODEC_VERSION_INT
#define LIBAVCODEC_IDENT "Lavc" AV_STRINGIFY(LIBAVCODEC_VERSION)
@ -120,6 +120,7 @@ enum CodecID {
CODEC_ID_FLASHSV,
CODEC_ID_CAVS,
CODEC_ID_JPEG2000,
CODEC_ID_VMNC,
/* various pcm "codecs" */
CODEC_ID_PCM_S16LE= 0x10000,
@ -2259,6 +2260,7 @@ extern AVCodec smackaud_decoder;
extern AVCodec kmvc_decoder;
extern AVCodec flashsv_decoder;
extern AVCodec cavs_decoder;
extern AVCodec vmnc_decoder;
/* pcm codecs */
#define PCM_CODEC(id, name) \

326
libavcodec/vmnc.c Normal file
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@ -0,0 +1,326 @@
/*
* VMware Screen Codec (VMnc) decoder
* Copyright (c) 2006 Konstantin Shishkov
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
/**
* @file vmnc.c
* VMware Screen Codec (VMnc) decoder
* As Alex Beregszaszi discovered, this is effectively RFB data dump
*/
#include <stdio.h>
#include <stdlib.h>
#include "common.h"
#include "avcodec.h"
#define MAGIC_WMVi 0x574D5669
enum HexTile_Flags {
HT_RAW = 1, // tile is raw
HT_BKG = 2, // background color is present
HT_FG = 4, // foreground color is present
HT_SUB = 8, // subrects are present
HT_CLR = 16 // each subrect has own color
};
/*
* Decoder context
*/
typedef struct VmncContext {
AVCodecContext *avctx;
AVFrame pic;
int bpp;
int bpp2;
int bigendian;
uint8_t pal[768];
int width, height;
} VmncContext;
/* read pixel value from stream */
static always_inline int vmnc_get_pixel(uint8_t* buf, int bpp, int be) {
switch(bpp * 2 + be) {
case 2:
case 3: return *buf;
case 4: return LE_16(buf);
case 5: return BE_16(buf);
case 8: return LE_32(buf);
case 9: return BE_32(buf);
default: return 0;
}
}
/* fill rectangle with given colour */
static always_inline void paint_rect(uint8_t *dst, int dx, int dy, int w, int h, int color, int bpp, int stride)
{
int i, j;
dst += dx * bpp + dy * stride;
if(bpp == 1){
for(j = 0; j < h; j++) {
memset(dst, color, w);
dst += stride;
}
}else if(bpp == 2){
uint16_t* dst2;
for(j = 0; j < h; j++) {
dst2 = (uint16_t*)dst;
for(i = 0; i < w; i++) {
*dst2++ = color;
}
dst += stride;
}
}else if(bpp == 4){
uint32_t* dst2;
for(j = 0; j < h; j++) {
dst2 = (uint32_t*)dst;
for(i = 0; i < w; i++) {
dst2[i] = color;
}
dst += stride;
}
}
}
static always_inline void paint_raw(uint8_t *dst, int w, int h, uint8_t* src, int bpp, int be, int stride)
{
int i, j, p;
for(j = 0; j < h; j++) {
for(i = 0; i < w; i++) {
p = vmnc_get_pixel(src, bpp, be);
src += bpp;
memcpy(dst + i*bpp, &p, bpp);
}
dst += stride;
}
}
static int decode_hextile(VmncContext *c, uint8_t* dst, uint8_t* src, int w, int h, int stride)
{
int i, j, k;
int bg = 0, fg = 0, rects, color, flags, xy, wh;
const int bpp = c->bpp2;
uint8_t *dst2;
int bw = 16, bh = 16;
uint8_t *ssrc=src;
for(j = 0; j < h; j += 16) {
dst2 = dst;
bw = 16;
if(j + 16 > h) bh = h - j;
for(i = 0; i < w; i += 16, dst2 += 16 * bpp) {
if(i + 16 > w) bw = w - i;
flags = *src++;
if(flags & HT_RAW) {
paint_raw(dst2, bw, bh, src, bpp, c->bigendian, stride);
} else {
if(flags & HT_BKG) {
bg = vmnc_get_pixel(src, bpp, c->bigendian); src += bpp;
}
if(flags & HT_FG) {
fg = vmnc_get_pixel(src, bpp, c->bigendian); src += bpp;
}
rects = 0;
if(flags & HT_SUB)
rects = *src++;
color = (flags & HT_CLR);
paint_rect(dst2, 0, 0, bw, bh, bg, bpp, stride);
for(k = 0; k < rects; k++) {
if(color) {
fg = vmnc_get_pixel(src, bpp, c->bigendian); src += bpp;
}
xy = *src++;
wh = *src++;
paint_rect(dst2, xy >> 4, xy & 0xF, (wh>>4)+1, (wh & 0xF)+1, fg, bpp, stride);
}
}
}
dst += stride * 16;
}
return src - ssrc;
}
static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, uint8_t *buf, int buf_size)
{
VmncContext * const c = (VmncContext *)avctx->priv_data;
uint8_t *outptr;
uint8_t *src = buf;
int t, dx, dy, w, h, enc, chunks, res;
c->pic.reference = 1;
c->pic.buffer_hints = FF_BUFFER_HINTS_VALID | FF_BUFFER_HINTS_PRESERVE | FF_BUFFER_HINTS_REUSABLE;
if(avctx->reget_buffer(avctx, &c->pic) < 0){
av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
return -1;
}
t = BE_32(src);
src += 4;
chunks = t & 0xFF;
if(chunks > 8) {
av_log(avctx, AV_LOG_ERROR, "Frame decoding is not possible. Please report sample to developers.\n");
return -1;
}
if(chunks == 8) {
int w, h, depth;
c->pic.key_frame = 1;
c->pic.pict_type = FF_I_TYPE;
/* parse ServerInitialization struct */
src += 4;
w = BE_16(src); src += 2;
h = BE_16(src); src += 2;
t = BE_32(src); src += 4;
if(t != MAGIC_WMVi) {
av_log(avctx, AV_LOG_INFO, "Invalid header: magic not found\n");
return -1;
}
depth = *src++;
if(depth != c->bpp) {
av_log(avctx, AV_LOG_INFO, "Depth mismatch. Container %i bpp, Frame data: %i bpp\n", c->bpp, depth);
}
src++;
c->bigendian = *src++;
if(c->bigendian & (~1)) {
av_log(avctx, AV_LOG_INFO, "Invalid header: bigendian flag = %i\n", c->bigendian);
return -1;
}
//skip pixel format data
src += 13;
chunks = 1; // there should be one chunk with the whole frame, rest could be ignored
} else {
c->pic.key_frame = 0;
c->pic.pict_type = FF_P_TYPE;
}
while(chunks--) {
// decode FramebufferUpdate struct
dx = BE_16(src); src += 2;
dy = BE_16(src); src += 2;
w = BE_16(src); src += 2;
h = BE_16(src); src += 2;
if((dx + w > c->width) || (dy + h > c->height)) {
av_log(avctx, AV_LOG_ERROR, "Incorrect frame size: %ix%i+%ix%i of %ix%i\n", w, h, dx, dy, c->width, c->height);
return -1;
}
enc = BE_32(src); src += 4;
if(enc != 0x00000005) {
av_log(avctx, AV_LOG_ERROR, "Only hextile decoding is supported for now\n");
switch(enc) {
case 0:
av_log(avctx, AV_LOG_INFO, "And this is raw encoding\n");
break;
case 1:
av_log(avctx, AV_LOG_INFO, "And this is CopyRect encoding\n");
break;
case 2:
av_log(avctx, AV_LOG_INFO, "And this is RRE encoding\n");
break;
case 3:
av_log(avctx, AV_LOG_INFO, "And this is CoRRE encoding\n");
break;
default:
av_log(avctx, AV_LOG_INFO, "And this is unknown encoding (%i)\n", enc);
}
return -1;
}
outptr = c->pic.data[0] + dx * c->bpp2 + dy * c->pic.linesize[0];
res = decode_hextile(c, outptr, src, w, h, c->pic.linesize[0]);
if(res < 0)
return -1;
src += res;
}
*data_size = sizeof(AVFrame);
*(AVFrame*)data = c->pic;
/* always report that the buffer was completely consumed */
return buf_size;
}
/*
*
* Init VMnc decoder
*
*/
static int decode_init(AVCodecContext *avctx)
{
VmncContext * const c = (VmncContext *)avctx->priv_data;
c->avctx = avctx;
avctx->has_b_frames = 0;
c->pic.data[0] = NULL;
c->width = avctx->width;
c->height = avctx->height;
if (avcodec_check_dimensions(avctx, avctx->height, avctx->width) < 0) {
return 1;
}
c->bpp = avctx->bits_per_sample;
c->bpp2 = c->bpp/8;
switch(c->bpp){
case 8:
avctx->pix_fmt = PIX_FMT_PAL8;
break;
case 16:
avctx->pix_fmt = PIX_FMT_RGB555;
break;
case 32:
avctx->pix_fmt = PIX_FMT_RGB32;
break;
default:
av_log(avctx, AV_LOG_ERROR, "Unsupported bitdepth %i\n", c->bpp);
}
return 0;
}
/*
*
* Uninit VMnc decoder
*
*/
static int decode_end(AVCodecContext *avctx)
{
VmncContext * const c = (VmncContext *)avctx->priv_data;
if (c->pic.data[0])
avctx->release_buffer(avctx, &c->pic);
return 0;
}
AVCodec vmnc_decoder = {
"VMware video",
CODEC_TYPE_VIDEO,
CODEC_ID_VMNC,
sizeof(VmncContext),
decode_init,
NULL,
decode_end,
decode_frame
};

1
libavformat/riff.c
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@ -155,6 +155,7 @@ const CodecTag codec_bmp_tags[] = {
{ CODEC_ID_KMVC, MKTAG('K', 'M', 'V', 'C') },
{ CODEC_ID_CAVS, MKTAG('C', 'A', 'V', 'S') },
{ CODEC_ID_JPEG2000, MKTAG('M', 'J', '2', 'C') },
{ CODEC_ID_VMNC, MKTAG('V', 'M', 'n', 'c') },
{ CODEC_ID_RAWVIDEO, 0 },
{ CODEC_ID_NONE, 0 },
};