+#include "quakedef.h"
+#include "cap_avi.h"
+
+#define AVI_MASTER_INDEX_SIZE 640 // GB ought to be enough for anyone
+
+typedef struct capturevideostate_avi_formatspecific_s
+{
+ // AVI stuff
+ fs_offset_t videofile_firstchunkframes_offset;
+ fs_offset_t videofile_totalframes_offset1;
+ fs_offset_t videofile_totalframes_offset2;
+ fs_offset_t videofile_totalsampleframes_offset;
+ int videofile_ix_master_audio_inuse;
+ fs_offset_t videofile_ix_master_audio_inuse_offset;
+ fs_offset_t videofile_ix_master_audio_start_offset;
+ int videofile_ix_master_video_inuse;
+ fs_offset_t videofile_ix_master_video_inuse_offset;
+ fs_offset_t videofile_ix_master_video_start_offset;
+ fs_offset_t videofile_ix_movistart;
+ fs_offset_t position;
+ qboolean canseek;
+ sizebuf_t riffbuffer;
+ unsigned char riffbufferdata[128];
+ sizebuf_t riffindexbuffer;
+ int riffstacklevel;
+ fs_offset_t riffstackstartoffset[4];
+ fs_offset_t riffstacksizehint[4];
+ const char *riffstackfourcc[4];
+}
+capturevideostate_avi_formatspecific_t;
+#define LOAD_FORMATSPECIFIC_AVI() capturevideostate_avi_formatspecific_t *format = (capturevideostate_avi_formatspecific_t *) cls.capturevideo.formatspecific
+
+static void SCR_CaptureVideo_RIFF_Start(void)
+{
+ LOAD_FORMATSPECIFIC_AVI();
+ memset(&format->riffbuffer, 0, sizeof(sizebuf_t));
+ format->riffbuffer.maxsize = sizeof(format->riffbufferdata);
+ format->riffbuffer.data = format->riffbufferdata;
+ format->position = 0;
+}
+
+static void SCR_CaptureVideo_RIFF_Flush(void)
+{
+ LOAD_FORMATSPECIFIC_AVI();
+ if (format->riffbuffer.cursize > 0)
+ {
+ if (!FS_Write(cls.capturevideo.videofile, format->riffbuffer.data, format->riffbuffer.cursize))
+ cls.capturevideo.error = true;
+ format->position += format->riffbuffer.cursize;
+ format->riffbuffer.cursize = 0;
+ format->riffbuffer.overflowed = false;
+ }
+}
+
+static void SCR_CaptureVideo_RIFF_WriteBytes(const unsigned char *data, size_t size)
+{
+ LOAD_FORMATSPECIFIC_AVI();
+ SCR_CaptureVideo_RIFF_Flush();
+ if (!FS_Write(cls.capturevideo.videofile, data, size))
+ cls.capturevideo.error = true;
+ format->position += size;
+}
+
+static void SCR_CaptureVideo_RIFF_Write32(int n)
+{
+ LOAD_FORMATSPECIFIC_AVI();
+ if (format->riffbuffer.cursize + 4 > format->riffbuffer.maxsize)
+ SCR_CaptureVideo_RIFF_Flush();
+ MSG_WriteLong(&format->riffbuffer, n);
+}
+
+static void SCR_CaptureVideo_RIFF_Write16(int n)
+{
+ LOAD_FORMATSPECIFIC_AVI();
+ if (format->riffbuffer.cursize + 2 > format->riffbuffer.maxsize)
+ SCR_CaptureVideo_RIFF_Flush();
+ MSG_WriteShort(&format->riffbuffer, n);
+}
+
+static void SCR_CaptureVideo_RIFF_WriteFourCC(const char *chunkfourcc)
+{
+ LOAD_FORMATSPECIFIC_AVI();
+ if (format->riffbuffer.cursize + (int)strlen(chunkfourcc) > format->riffbuffer.maxsize)
+ SCR_CaptureVideo_RIFF_Flush();
+ MSG_WriteUnterminatedString(&format->riffbuffer, chunkfourcc);
+}
+
+static void SCR_CaptureVideo_RIFF_WriteTerminatedString(const char *string)
+{
+ LOAD_FORMATSPECIFIC_AVI();
+ if (format->riffbuffer.cursize + (int)strlen(string) > format->riffbuffer.maxsize)
+ SCR_CaptureVideo_RIFF_Flush();
+ MSG_WriteString(&format->riffbuffer, string);
+}
+
+static fs_offset_t SCR_CaptureVideo_RIFF_GetPosition(void)
+{
+ LOAD_FORMATSPECIFIC_AVI();
+ SCR_CaptureVideo_RIFF_Flush();
+ //return FS_Tell(cls.capturevideo.videofile);
+ return format->position;
+}
+
+static void SCR_CaptureVideo_RIFF_Push(const char *chunkfourcc, const char *listtypefourcc, fs_offset_t sizeHint)
+{
+ LOAD_FORMATSPECIFIC_AVI();
+ if (listtypefourcc && sizeHint >= 0)
+ sizeHint += 4; // size hint is for INNER size
+ SCR_CaptureVideo_RIFF_WriteFourCC(chunkfourcc);
+ SCR_CaptureVideo_RIFF_Write32(sizeHint);
+ SCR_CaptureVideo_RIFF_Flush();
+ format->riffstacksizehint[format->riffstacklevel] = sizeHint;
+ format->riffstackstartoffset[format->riffstacklevel] = SCR_CaptureVideo_RIFF_GetPosition();
+ format->riffstackfourcc[format->riffstacklevel] = chunkfourcc;
+ ++format->riffstacklevel;
+ if (listtypefourcc)
+ SCR_CaptureVideo_RIFF_WriteFourCC(listtypefourcc);
+}
+
+static void SCR_CaptureVideo_RIFF_Pop(void)
+{
+ LOAD_FORMATSPECIFIC_AVI();
+ fs_offset_t offset, sizehint;
+ int x;
+ unsigned char sizebytes[4];
+ // write out the chunk size and then return to the current file position
+ format->riffstacklevel--;
+ offset = SCR_CaptureVideo_RIFF_GetPosition();
+
+ sizehint = format->riffstacksizehint[format->riffstacklevel];
+ x = (int)(offset - (format->riffstackstartoffset[format->riffstacklevel]));
+
+ if(x != sizehint)
+ {
+ if(sizehint != -1)
+ {
+ int i;
+ Con_Printf("WARNING: invalid size hint %d when writing video data (actual size: %d)\n", (int) sizehint, x);
+ for(i = 0; i <= format->riffstacklevel; ++i)
+ {
+ Con_Printf(" RIFF level %d = %s\n", i, format->riffstackfourcc[i]);
+ }
+ }
+ sizebytes[0] = (x) & 0xff;sizebytes[1] = (x >> 8) & 0xff;sizebytes[2] = (x >> 16) & 0xff;sizebytes[3] = (x >> 24) & 0xff;
+ if(FS_Seek(cls.capturevideo.videofile, -(x + 4), SEEK_END) >= 0)
+ {
+ FS_Write(cls.capturevideo.videofile, sizebytes, 4);
+ }
+ FS_Seek(cls.capturevideo.videofile, 0, SEEK_END);
+ }
+
+ if (offset & 1)
+ {
+ SCR_CaptureVideo_RIFF_WriteBytes((unsigned char *) "\0", 1);
+ }
+}
+
+static void GrowBuf(sizebuf_t *buf, int extralen)
+{
+ if(buf->cursize + extralen > buf->maxsize)
+ {
+ int oldsize = buf->maxsize;
+ unsigned char *olddata;
+ olddata = buf->data;
+ buf->maxsize = max(buf->maxsize * 2, 4096);
+ buf->data = (unsigned char *) Mem_Alloc(tempmempool, buf->maxsize);
+ if(olddata)
+ {
+ memcpy(buf->data, olddata, oldsize);
+ Mem_Free(olddata);
+ }
+ }
+}
+
+static void SCR_CaptureVideo_RIFF_IndexEntry(const char *chunkfourcc, int chunksize, int flags)
+{
+ LOAD_FORMATSPECIFIC_AVI();
+ if(!format->canseek)
+ Host_Error("SCR_CaptureVideo_RIFF_IndexEntry called on non-seekable AVI");
+
+ if (format->riffstacklevel != 2)
+ Sys_Error("SCR_Capturevideo_RIFF_IndexEntry: RIFF stack level is %i (should be 2)\n", format->riffstacklevel);
+ GrowBuf(&format->riffindexbuffer, 16);
+ SCR_CaptureVideo_RIFF_Flush();
+ MSG_WriteUnterminatedString(&format->riffindexbuffer, chunkfourcc);
+ MSG_WriteLong(&format->riffindexbuffer, flags);
+ MSG_WriteLong(&format->riffindexbuffer, (int)FS_Tell(cls.capturevideo.videofile) - format->riffstackstartoffset[1]);
+ MSG_WriteLong(&format->riffindexbuffer, chunksize);
+}
+
+static void SCR_CaptureVideo_RIFF_MakeIxChunk(const char *fcc, const char *dwChunkId, fs_offset_t masteridx_counter, int *masteridx_count, fs_offset_t masteridx_start)
+{
+ LOAD_FORMATSPECIFIC_AVI();
+ int nMatching;
+ int i;
+ fs_offset_t ix = SCR_CaptureVideo_RIFF_GetPosition();
+ fs_offset_t pos, sz;
+
+ if(!format->canseek)
+ Host_Error("SCR_CaptureVideo_RIFF_MakeIxChunk called on non-seekable AVI");
+
+ if(*masteridx_count >= AVI_MASTER_INDEX_SIZE)
+ return;
+
+ nMatching = 0; // go through index and enumerate them
+ for(i = 0; i < format->riffindexbuffer.cursize; i += 16)
+ if(!memcmp(format->riffindexbuffer.data + i, dwChunkId, 4))
+ ++nMatching;
+
+ sz = 2+2+4+4+4+4+4;
+ for(i = 0; i < format->riffindexbuffer.cursize; i += 16)
+ if(!memcmp(format->riffindexbuffer.data + i, dwChunkId, 4))
+ sz += 8;
+
+ SCR_CaptureVideo_RIFF_Push(fcc, NULL, sz);
+ SCR_CaptureVideo_RIFF_Write16(2); // wLongsPerEntry
+ SCR_CaptureVideo_RIFF_Write16(0x0100); // bIndexType=1, bIndexSubType=0
+ SCR_CaptureVideo_RIFF_Write32(nMatching); // nEntriesInUse
+ SCR_CaptureVideo_RIFF_WriteFourCC(dwChunkId); // dwChunkId
+ SCR_CaptureVideo_RIFF_Write32(format->videofile_ix_movistart & (fs_offset_t) 0xFFFFFFFFu);
+ SCR_CaptureVideo_RIFF_Write32(((fs_offset_t) format->videofile_ix_movistart) >> 32);
+ SCR_CaptureVideo_RIFF_Write32(0); // dwReserved
+
+ for(i = 0; i < format->riffindexbuffer.cursize; i += 16)
+ if(!memcmp(format->riffindexbuffer.data + i, dwChunkId, 4))
+ {
+ unsigned int *p = (unsigned int *) (format->riffindexbuffer.data + i);
+ unsigned int flags = p[1];
+ unsigned int rpos = p[2];
+ unsigned int size = p[3];
+ size &= ~0x80000000;
+ if(!(flags & 0x10)) // no keyframe?
+ size |= 0x80000000;
+ SCR_CaptureVideo_RIFF_Write32(rpos + 8);
+ SCR_CaptureVideo_RIFF_Write32(size);
+ }
+
+ SCR_CaptureVideo_RIFF_Flush();
+ SCR_CaptureVideo_RIFF_Pop();
+ pos = SCR_CaptureVideo_RIFF_GetPosition();
+
+ if(FS_Seek(cls.capturevideo.videofile, masteridx_start + 16 * *masteridx_count, SEEK_SET) >= 0)
+ {
+ SCR_CaptureVideo_RIFF_Write32(ix & (fs_offset_t) 0xFFFFFFFFu);
+ SCR_CaptureVideo_RIFF_Write32(((fs_offset_t) ix) >> 32);
+ SCR_CaptureVideo_RIFF_Write32(pos - ix);
+ SCR_CaptureVideo_RIFF_Write32(nMatching);
+ SCR_CaptureVideo_RIFF_Flush();
+ }
+
+ if(FS_Seek(cls.capturevideo.videofile, masteridx_counter, SEEK_SET) >= 0)
+ {
+ SCR_CaptureVideo_RIFF_Write32(++*masteridx_count);
+ SCR_CaptureVideo_RIFF_Flush();
+ }
+
+ FS_Seek(cls.capturevideo.videofile, 0, SEEK_END); // return value doesn't matter here
+}
+
+static void SCR_CaptureVideo_RIFF_Finish(qboolean final)
+{
+ LOAD_FORMATSPECIFIC_AVI();
+ // close the "movi" list
+ SCR_CaptureVideo_RIFF_Pop();
+ if(format->videofile_ix_master_video_inuse_offset)
+ SCR_CaptureVideo_RIFF_MakeIxChunk("ix00", "00dc", format->videofile_ix_master_video_inuse_offset, &format->videofile_ix_master_video_inuse, format->videofile_ix_master_video_start_offset);
+ if(format->videofile_ix_master_audio_inuse_offset)
+ SCR_CaptureVideo_RIFF_MakeIxChunk("ix01", "01wb", format->videofile_ix_master_audio_inuse_offset, &format->videofile_ix_master_audio_inuse, format->videofile_ix_master_audio_start_offset);
+ // write the idx1 chunk that we've been building while saving the frames (for old style players)
+ if(final && format->videofile_firstchunkframes_offset)
+ // TODO replace index creating by OpenDML ix##/##ix/indx chunk so it works for more than one AVI part too
+ {
+ SCR_CaptureVideo_RIFF_Push("idx1", NULL, format->riffindexbuffer.cursize);
+ SCR_CaptureVideo_RIFF_WriteBytes(format->riffindexbuffer.data, format->riffindexbuffer.cursize);
+ SCR_CaptureVideo_RIFF_Pop();
+ }
+ format->riffindexbuffer.cursize = 0;
+ // pop the RIFF chunk itself
+ while (format->riffstacklevel > 0)
+ SCR_CaptureVideo_RIFF_Pop();
+ SCR_CaptureVideo_RIFF_Flush();
+ if(format->videofile_firstchunkframes_offset)
+ {
+ Con_DPrintf("Finishing first chunk (%d frames)\n", cls.capturevideo.frame);
+ if(FS_Seek(cls.capturevideo.videofile, format->videofile_firstchunkframes_offset, SEEK_SET) >= 0)
+ {
+ SCR_CaptureVideo_RIFF_Write32(cls.capturevideo.frame);
+ SCR_CaptureVideo_RIFF_Flush();
+ }
+ FS_Seek(cls.capturevideo.videofile, 0, SEEK_END);
+ format->videofile_firstchunkframes_offset = 0;
+ }
+ else
+ Con_DPrintf("Finishing another chunk (%d frames)\n", cls.capturevideo.frame);
+}
+
+static void SCR_CaptureVideo_RIFF_OverflowCheck(int framesize)
+{
+ LOAD_FORMATSPECIFIC_AVI();
+ fs_offset_t cursize, curfilesize;
+ if (format->riffstacklevel != 2)
+ Sys_Error("SCR_CaptureVideo_RIFF_OverflowCheck: chunk stack leakage!\n");
+
+ if(!format->canseek)
+ return;
+
+ // check where we are in the file
+ SCR_CaptureVideo_RIFF_Flush();
+ cursize = SCR_CaptureVideo_RIFF_GetPosition() - format->riffstackstartoffset[0];
+ curfilesize = SCR_CaptureVideo_RIFF_GetPosition();
+
+ // if this would overflow the windows limit of 1GB per RIFF chunk, we need
+ // to close the current RIFF chunk and open another for future frames
+ if (8 + cursize + framesize + format->riffindexbuffer.cursize + 8 + format->riffindexbuffer.cursize + 64 > 1<<30) // note that the Ix buffer takes less space... I just don't dare to / 2 here now... sorry, maybe later
+ {
+ SCR_CaptureVideo_RIFF_Finish(false);
+ // begin a new 1GB extended section of the AVI
+ SCR_CaptureVideo_RIFF_Push("RIFF", "AVIX", -1);
+ SCR_CaptureVideo_RIFF_Push("LIST", "movi", -1);
+ format->videofile_ix_movistart = format->riffstackstartoffset[1];
+ }
+}
+
+// converts from BGRA32 to I420 colorspace (identical to YV12 except chroma plane order is reversed), this colorspace is handled by the Intel(r) 4:2:0 codec on Windows
+static void SCR_CaptureVideo_ConvertFrame_BGRA_to_I420_flip(int width, int height, unsigned char *instart, unsigned char *outstart)
+{
+ int x, y;
+ int blockr, blockg, blockb;
+ int outoffset = (width/2)*(height/2);
+ unsigned char *b, *out;
+ // process one line at a time, and CbCr every other line at 2 pixel intervals
+ for (y = 0;y < height;y++)
+ {
+ // 1x1 Y
+ for (b = instart + (height-1-y)*width*4, out = outstart + y*width, x = 0;x < width;x++, b += 4, out++)
+ {
+ blockr = b[2];
+ blockg = b[1];
+ blockb = b[0];
+ *out = cls.capturevideo.yuvnormalizetable[0][cls.capturevideo.rgbtoyuvscaletable[0][0][blockr] + cls.capturevideo.rgbtoyuvscaletable[0][1][blockg] + cls.capturevideo.rgbtoyuvscaletable[0][2][blockb]];
+ }
+ if ((y & 1) == 0)
+ {
+ // 2x2 Cr and Cb planes
+ int inpitch = width*4;
+ for (b = instart + (height-2-y)*width*4, out = outstart + width*height + (y/2)*(width/2), x = 0;x < width/2;x++, b += 8, out++)
+ {
+ blockr = (b[2] + b[6] + b[inpitch+2] + b[inpitch+6]) >> 2;
+ blockg = (b[1] + b[5] + b[inpitch+1] + b[inpitch+5]) >> 2;
+ blockb = (b[0] + b[4] + b[inpitch+0] + b[inpitch+4]) >> 2;
+ // Cr
+ out[0 ] = cls.capturevideo.yuvnormalizetable[1][cls.capturevideo.rgbtoyuvscaletable[1][0][blockr] + cls.capturevideo.rgbtoyuvscaletable[1][1][blockg] + cls.capturevideo.rgbtoyuvscaletable[1][2][blockb] + 128];
+ // Cb
+ out[outoffset] = cls.capturevideo.yuvnormalizetable[2][cls.capturevideo.rgbtoyuvscaletable[2][0][blockr] + cls.capturevideo.rgbtoyuvscaletable[2][1][blockg] + cls.capturevideo.rgbtoyuvscaletable[2][2][blockb] + 128];
+ }
+ }
+ }
+}
+
+static void SCR_CaptureVideo_Avi_VideoFrames(int num)
+{
+ LOAD_FORMATSPECIFIC_AVI();
+ int x = 0, width = cls.capturevideo.width, height = cls.capturevideo.height;
+ unsigned char *in, *out;
+ // FIXME: width/height must be multiple of 2, enforce this?
+ in = cls.capturevideo.outbuffer;
+ out = cls.capturevideo.outbuffer + width*height*4;
+ SCR_CaptureVideo_ConvertFrame_BGRA_to_I420_flip(width, height, in, out);
+ x = width*height+(width/2)*(height/2)*2;
+ while(num-- > 0)
+ {
+ if(format->canseek)
+ {
+ SCR_CaptureVideo_RIFF_OverflowCheck(8 + x);
+ SCR_CaptureVideo_RIFF_IndexEntry("00dc", x, 0x10); // AVIIF_KEYFRAME
+ }
+
+ if(!format->canseek)
+ {
+ SCR_CaptureVideo_RIFF_Push("RIFF", "AVIX", 12+8+x);
+ SCR_CaptureVideo_RIFF_Push("LIST", "movi", 8+x);
+ }
+ SCR_CaptureVideo_RIFF_Push("00dc", NULL, x);
+ SCR_CaptureVideo_RIFF_WriteBytes(out, x);
+ SCR_CaptureVideo_RIFF_Pop();
+ if(!format->canseek)
+ {
+ SCR_CaptureVideo_RIFF_Pop();
+ SCR_CaptureVideo_RIFF_Pop();
+ }
+ }
+}
+
+void SCR_CaptureVideo_Avi_EndVideo()
+{
+ LOAD_FORMATSPECIFIC_AVI();
+
+ if(format->canseek)
+ {
+ // close any open chunks
+ SCR_CaptureVideo_RIFF_Finish(true);
+
+ // go back and fix the video frames and audio samples fields
+ if(format->videofile_totalframes_offset1)
+ if(FS_Seek(cls.capturevideo.videofile, format->videofile_totalframes_offset1, SEEK_SET) >= 0)
+ {
+ SCR_CaptureVideo_RIFF_Write32(cls.capturevideo.frame);
+ SCR_CaptureVideo_RIFF_Flush();
+ }
+ if(format->videofile_totalframes_offset2)
+ if(FS_Seek(cls.capturevideo.videofile, format->videofile_totalframes_offset2, SEEK_SET) >= 0)
+ {
+ SCR_CaptureVideo_RIFF_Write32(cls.capturevideo.frame);
+ SCR_CaptureVideo_RIFF_Flush();
+ }
+ if (cls.capturevideo.soundrate)
+ {
+ if(format->videofile_totalsampleframes_offset)
+ if(FS_Seek(cls.capturevideo.videofile, format->videofile_totalsampleframes_offset, SEEK_SET) >= 0)
+ {
+ SCR_CaptureVideo_RIFF_Write32(cls.capturevideo.soundsampleframe);
+ SCR_CaptureVideo_RIFF_Flush();
+ }
+ }
+ }
+
+ if (format->riffindexbuffer.data)
+ {
+ Mem_Free(format->riffindexbuffer.data);
+ format->riffindexbuffer.data = NULL;
+ }
+
+ FS_Close(cls.capturevideo.videofile);
+ cls.capturevideo.videofile = NULL;
+
+ Mem_Free(format);
+}
+
+void SCR_CaptureVideo_Avi_SoundFrame(const portable_sampleframe_t *paintbuffer, size_t length)
+{
+ LOAD_FORMATSPECIFIC_AVI();
+ int x;
+ unsigned char bufstereo16le[PAINTBUFFER_SIZE * 4];
+ unsigned char* out_ptr;
+ size_t i;
+
+ // write the sound buffer as little endian 16bit interleaved stereo
+ for(i = 0, out_ptr = bufstereo16le; i < length; i++, out_ptr += 4)
+ {
+ int n0, n1;
+
+ n0 = paintbuffer[i].sample[0];
+ n0 = bound(-32768, n0, 32767);
+ out_ptr[0] = (unsigned char)n0;
+ out_ptr[1] = (unsigned char)(n0 >> 8);
+
+ n1 = paintbuffer[i].sample[1];
+ n1 = bound(-32768, n1, 32767);
+ out_ptr[2] = (unsigned char)n1;
+ out_ptr[3] = (unsigned char)(n1 >> 8);
+ }
+
+ x = length*4;
+ if(format->canseek)
+ {
+ SCR_CaptureVideo_RIFF_OverflowCheck(8 + x);
+ SCR_CaptureVideo_RIFF_IndexEntry("01wb", x, 0x10); // AVIIF_KEYFRAME
+ }
+
+ if(!format->canseek)
+ {
+ SCR_CaptureVideo_RIFF_Push("RIFF", "AVIX", 12+8+x);
+ SCR_CaptureVideo_RIFF_Push("LIST", "movi", 8+x);
+ }
+ SCR_CaptureVideo_RIFF_Push("01wb", NULL, x);
+ SCR_CaptureVideo_RIFF_WriteBytes(bufstereo16le, x);
+ SCR_CaptureVideo_RIFF_Pop();
+ if(!format->canseek)
+ {
+ SCR_CaptureVideo_RIFF_Pop();
+ SCR_CaptureVideo_RIFF_Pop();
+ }
+}
+
+void SCR_CaptureVideo_Avi_BeginVideo()
+{
+ int width = cls.capturevideo.width;
+ int height = cls.capturevideo.height;
+ int n, d;
+ unsigned int i;
+ double aspect;
+
+ aspect = vid.width / (vid.height * vid_pixelheight.value);
+
+ cls.capturevideo.format = CAPTUREVIDEOFORMAT_AVI_I420;
+ cls.capturevideo.videofile = FS_OpenRealFile(va("%s.avi", cls.capturevideo.basename), "wb", false);
+ cls.capturevideo.endvideo = SCR_CaptureVideo_Avi_EndVideo;
+ cls.capturevideo.videoframes = SCR_CaptureVideo_Avi_VideoFrames;
+ cls.capturevideo.soundframe = SCR_CaptureVideo_Avi_SoundFrame;
+ cls.capturevideo.formatspecific = Mem_Alloc(tempmempool, sizeof(capturevideostate_avi_formatspecific_t));
+ {
+ LOAD_FORMATSPECIFIC_AVI();
+ format->canseek = (FS_Seek(cls.capturevideo.videofile, 0, SEEK_SET) == 0);
+ SCR_CaptureVideo_RIFF_Start();
+ // enclosing RIFF chunk (there can be multiple of these in >1GB files, the later ones are "AVIX" instead of "AVI " and have no header/stream info)
+ SCR_CaptureVideo_RIFF_Push("RIFF", "AVI ", format->canseek ? -1 : 12+(8+56+12+(12+52+8+40+8+68)+(cls.capturevideo.soundrate?(12+12+52+8+18):0)+12+(8+4))+12+(8+(((int) strlen(engineversion) | 1) + 1))+12);
+ // AVI main header
+ SCR_CaptureVideo_RIFF_Push("LIST", "hdrl", format->canseek ? -1 : 8+56+12+(12+52+8+40+8+68)+(cls.capturevideo.soundrate?(12+12+52+8+18):0)+12+(8+4));
+ SCR_CaptureVideo_RIFF_Push("avih", NULL, 56);
+ SCR_CaptureVideo_RIFF_Write32((int)(1000000.0 / cls.capturevideo.framerate)); // microseconds per frame
+ SCR_CaptureVideo_RIFF_Write32(0); // max bytes per second
+ SCR_CaptureVideo_RIFF_Write32(0); // padding granularity
+ SCR_CaptureVideo_RIFF_Write32(0x910); // flags (AVIF_HASINDEX | AVIF_ISINTERLEAVED | AVIF_TRUSTCKTYPE)
+ format->videofile_firstchunkframes_offset = SCR_CaptureVideo_RIFF_GetPosition();
+ SCR_CaptureVideo_RIFF_Write32(0); // total frames
+ SCR_CaptureVideo_RIFF_Write32(0); // initial frames
+ if (cls.capturevideo.soundrate)
+ SCR_CaptureVideo_RIFF_Write32(2); // number of streams
+ else
+ SCR_CaptureVideo_RIFF_Write32(1); // number of streams
+ SCR_CaptureVideo_RIFF_Write32(0); // suggested buffer size
+ SCR_CaptureVideo_RIFF_Write32(width); // width
+ SCR_CaptureVideo_RIFF_Write32(height); // height
+ SCR_CaptureVideo_RIFF_Write32(0); // reserved[0]
+ SCR_CaptureVideo_RIFF_Write32(0); // reserved[1]
+ SCR_CaptureVideo_RIFF_Write32(0); // reserved[2]
+ SCR_CaptureVideo_RIFF_Write32(0); // reserved[3]
+ SCR_CaptureVideo_RIFF_Pop();
+ // video stream info
+ SCR_CaptureVideo_RIFF_Push("LIST", "strl", format->canseek ? -1 : 12+52+8+40+8+68);
+ SCR_CaptureVideo_RIFF_Push("strh", "vids", 52);
+ SCR_CaptureVideo_RIFF_WriteFourCC("I420"); // stream fourcc (I420 colorspace, uncompressed)
+ SCR_CaptureVideo_RIFF_Write32(0); // flags
+ SCR_CaptureVideo_RIFF_Write16(0); // priority
+ SCR_CaptureVideo_RIFF_Write16(0); // language
+ SCR_CaptureVideo_RIFF_Write32(0); // initial frames
+ // find an ideal divisor for the framerate
+ FindFraction(cls.capturevideo.framerate, &n, &d, 1000);
+ SCR_CaptureVideo_RIFF_Write32(d); // samples/second divisor
+ SCR_CaptureVideo_RIFF_Write32(n); // samples/second multiplied by divisor
+ SCR_CaptureVideo_RIFF_Write32(0); // start
+ format->videofile_totalframes_offset1 = SCR_CaptureVideo_RIFF_GetPosition();
+ SCR_CaptureVideo_RIFF_Write32(0xFFFFFFFF); // length
+ SCR_CaptureVideo_RIFF_Write32(width*height+(width/2)*(height/2)*2); // suggested buffer size
+ SCR_CaptureVideo_RIFF_Write32(0); // quality
+ SCR_CaptureVideo_RIFF_Write32(0); // sample size
+ SCR_CaptureVideo_RIFF_Write16(0); // frame left
+ SCR_CaptureVideo_RIFF_Write16(0); // frame top
+ SCR_CaptureVideo_RIFF_Write16(width); // frame right
+ SCR_CaptureVideo_RIFF_Write16(height); // frame bottom
+ SCR_CaptureVideo_RIFF_Pop();
+ // video stream format
+ SCR_CaptureVideo_RIFF_Push("strf", NULL, 40);
+ SCR_CaptureVideo_RIFF_Write32(40); // BITMAPINFO struct size
+ SCR_CaptureVideo_RIFF_Write32(width); // width
+ SCR_CaptureVideo_RIFF_Write32(height); // height
+ SCR_CaptureVideo_RIFF_Write16(3); // planes
+ SCR_CaptureVideo_RIFF_Write16(12); // bitcount
+ SCR_CaptureVideo_RIFF_WriteFourCC("I420"); // compression
+ SCR_CaptureVideo_RIFF_Write32(width*height+(width/2)*(height/2)*2); // size of image
+ SCR_CaptureVideo_RIFF_Write32(0); // x pixels per meter
+ SCR_CaptureVideo_RIFF_Write32(0); // y pixels per meter
+ SCR_CaptureVideo_RIFF_Write32(0); // color used
+ SCR_CaptureVideo_RIFF_Write32(0); // color important
+ SCR_CaptureVideo_RIFF_Pop();
+ // master index
+ if(format->canseek)
+ {
+ SCR_CaptureVideo_RIFF_Push("indx", NULL, -1);
+ SCR_CaptureVideo_RIFF_Write16(4); // wLongsPerEntry
+ SCR_CaptureVideo_RIFF_Write16(0); // bIndexSubType=0, bIndexType=0
+ format->videofile_ix_master_video_inuse_offset = SCR_CaptureVideo_RIFF_GetPosition();
+ SCR_CaptureVideo_RIFF_Write32(0); // nEntriesInUse
+ SCR_CaptureVideo_RIFF_WriteFourCC("00dc"); // dwChunkId
+ SCR_CaptureVideo_RIFF_Write32(0); // dwReserved1
+ SCR_CaptureVideo_RIFF_Write32(0); // dwReserved2
+ SCR_CaptureVideo_RIFF_Write32(0); // dwReserved3
+ format->videofile_ix_master_video_start_offset = SCR_CaptureVideo_RIFF_GetPosition();
+ for(i = 0; i < AVI_MASTER_INDEX_SIZE * 4; ++i)
+ SCR_CaptureVideo_RIFF_Write32(0); // fill up later
+ SCR_CaptureVideo_RIFF_Pop();
+ }
+ // extended format (aspect!)
+ SCR_CaptureVideo_RIFF_Push("vprp", NULL, 68);
+ SCR_CaptureVideo_RIFF_Write32(0); // VideoFormatToken
+ SCR_CaptureVideo_RIFF_Write32(0); // VideoStandard
+ SCR_CaptureVideo_RIFF_Write32((int)cls.capturevideo.framerate); // dwVerticalRefreshRate (bogus)
+ SCR_CaptureVideo_RIFF_Write32(width); // dwHTotalInT
+ SCR_CaptureVideo_RIFF_Write32(height); // dwVTotalInLines
+ FindFraction(aspect, &n, &d, 1000);
+ SCR_CaptureVideo_RIFF_Write32((n << 16) | d); // dwFrameAspectRatio // TODO a word
+ SCR_CaptureVideo_RIFF_Write32(width); // dwFrameWidthInPixels
+ SCR_CaptureVideo_RIFF_Write32(height); // dwFrameHeightInLines
+ SCR_CaptureVideo_RIFF_Write32(1); // nFieldPerFrame
+ SCR_CaptureVideo_RIFF_Write32(width); // CompressedBMWidth
+ SCR_CaptureVideo_RIFF_Write32(height); // CompressedBMHeight
+ SCR_CaptureVideo_RIFF_Write32(width); // ValidBMHeight
+ SCR_CaptureVideo_RIFF_Write32(height); // ValidBMWidth
+ SCR_CaptureVideo_RIFF_Write32(0); // ValidBMXOffset
+ SCR_CaptureVideo_RIFF_Write32(0); // ValidBMYOffset
+ SCR_CaptureVideo_RIFF_Write32(0); // ValidBMXOffsetInT
+ SCR_CaptureVideo_RIFF_Write32(0); // ValidBMYValidStartLine
+ SCR_CaptureVideo_RIFF_Pop();
+ SCR_CaptureVideo_RIFF_Pop();
+ if (cls.capturevideo.soundrate)
+ {
+ // audio stream info
+ SCR_CaptureVideo_RIFF_Push("LIST", "strl", format->canseek ? -1 : 12+52+8+18);
+ SCR_CaptureVideo_RIFF_Push("strh", "auds", 52);
+ SCR_CaptureVideo_RIFF_Write32(1); // stream fourcc (PCM audio, uncompressed)
+ SCR_CaptureVideo_RIFF_Write32(0); // flags
+ SCR_CaptureVideo_RIFF_Write16(0); // priority
+ SCR_CaptureVideo_RIFF_Write16(0); // language
+ SCR_CaptureVideo_RIFF_Write32(0); // initial frames
+ SCR_CaptureVideo_RIFF_Write32(1); // samples/second divisor
+ SCR_CaptureVideo_RIFF_Write32((int)(cls.capturevideo.soundrate)); // samples/second multiplied by divisor
+ SCR_CaptureVideo_RIFF_Write32(0); // start
+ format->videofile_totalsampleframes_offset = SCR_CaptureVideo_RIFF_GetPosition();
+ SCR_CaptureVideo_RIFF_Write32(0xFFFFFFFF); // length
+ SCR_CaptureVideo_RIFF_Write32(cls.capturevideo.soundrate * 2); // suggested buffer size (this is a half second)
+ SCR_CaptureVideo_RIFF_Write32(0); // quality
+ SCR_CaptureVideo_RIFF_Write32(4); // sample size
+ SCR_CaptureVideo_RIFF_Write16(0); // frame left
+ SCR_CaptureVideo_RIFF_Write16(0); // frame top
+ SCR_CaptureVideo_RIFF_Write16(0); // frame right
+ SCR_CaptureVideo_RIFF_Write16(0); // frame bottom
+ SCR_CaptureVideo_RIFF_Pop();
+ // audio stream format
+ SCR_CaptureVideo_RIFF_Push("strf", NULL, 18);
+ SCR_CaptureVideo_RIFF_Write16(1); // format (uncompressed PCM?)
+ SCR_CaptureVideo_RIFF_Write16(2); // channels (stereo)
+ SCR_CaptureVideo_RIFF_Write32(cls.capturevideo.soundrate); // sampleframes per second
+ SCR_CaptureVideo_RIFF_Write32(cls.capturevideo.soundrate * 4); // average bytes per second
+ SCR_CaptureVideo_RIFF_Write16(4); // block align
+ SCR_CaptureVideo_RIFF_Write16(16); // bits per sample
+ SCR_CaptureVideo_RIFF_Write16(0); // size
+ SCR_CaptureVideo_RIFF_Pop();
+ // master index
+ if(format->canseek)
+ {
+ SCR_CaptureVideo_RIFF_Push("indx", NULL, -1);
+ SCR_CaptureVideo_RIFF_Write16(4); // wLongsPerEntry
+ SCR_CaptureVideo_RIFF_Write16(0); // bIndexSubType=0, bIndexType=0
+ format->videofile_ix_master_audio_inuse_offset = SCR_CaptureVideo_RIFF_GetPosition();
+ SCR_CaptureVideo_RIFF_Write32(0); // nEntriesInUse
+ SCR_CaptureVideo_RIFF_WriteFourCC("01wb"); // dwChunkId
+ SCR_CaptureVideo_RIFF_Write32(0); // dwReserved1
+ SCR_CaptureVideo_RIFF_Write32(0); // dwReserved2
+ SCR_CaptureVideo_RIFF_Write32(0); // dwReserved3
+ format->videofile_ix_master_audio_start_offset = SCR_CaptureVideo_RIFF_GetPosition();
+ for(i = 0; i < AVI_MASTER_INDEX_SIZE * 4; ++i)
+ SCR_CaptureVideo_RIFF_Write32(0); // fill up later
+ SCR_CaptureVideo_RIFF_Pop();
+ }
+ SCR_CaptureVideo_RIFF_Pop();
+ }
+
+ format->videofile_ix_master_audio_inuse = format->videofile_ix_master_video_inuse = 0;
+
+ // extended header (for total #frames)
+ SCR_CaptureVideo_RIFF_Push("LIST", "odml", 8+4);
+ SCR_CaptureVideo_RIFF_Push("dmlh", NULL, 4);
+ format->videofile_totalframes_offset2 = SCR_CaptureVideo_RIFF_GetPosition();
+ SCR_CaptureVideo_RIFF_Write32(0xFFFFFFFF);
+ SCR_CaptureVideo_RIFF_Pop();
+ SCR_CaptureVideo_RIFF_Pop();
+
+ // close the AVI header list
+ SCR_CaptureVideo_RIFF_Pop();
+ // software that produced this AVI video file
+ SCR_CaptureVideo_RIFF_Push("LIST", "INFO", 8+((strlen(engineversion) | 1) + 1));
+ SCR_CaptureVideo_RIFF_Push("ISFT", NULL, strlen(engineversion) + 1);
+ SCR_CaptureVideo_RIFF_WriteTerminatedString(engineversion);
+ SCR_CaptureVideo_RIFF_Pop();
+ // enable this junk filler if you like the LIST movi to always begin at 4KB in the file (why?)
+#if 0
+ SCR_CaptureVideo_RIFF_Push("JUNK", NULL);
+ x = 4096 - SCR_CaptureVideo_RIFF_GetPosition();
+ while (x > 0)
+ {
+ const char *junkfiller = "[ DarkPlaces junk data ]";
+ int i = min(x, (int)strlen(junkfiller));
+ SCR_CaptureVideo_RIFF_WriteBytes((const unsigned char *)junkfiller, i);
+ x -= i;
+ }
+ SCR_CaptureVideo_RIFF_Pop();
+#endif
+ SCR_CaptureVideo_RIFF_Pop();
+ // begin the actual video section now
+ SCR_CaptureVideo_RIFF_Push("LIST", "movi", format->canseek ? -1 : 0);
+ format->videofile_ix_movistart = format->riffstackstartoffset[1];
+ // we're done with the headers now...
+ SCR_CaptureVideo_RIFF_Flush();
+ if (format->riffstacklevel != 2)
+ Sys_Error("SCR_CaptureVideo_BeginVideo: broken AVI writing code (stack level is %i (should be 2) at end of headers)\n", format->riffstacklevel);
+
+ if(!format->canseek)
+ {
+ // close the movi immediately
+ SCR_CaptureVideo_RIFF_Pop();
+ // close the AVI immediately (we'll put all frames into AVIX)
+ SCR_CaptureVideo_RIFF_Pop();
+ }
+ }
+}
projects / xonotic / darkplaces.git / commitdiff