X-Git-Url: http://git.asbjorn.biz/?a=blobdiff_plain;f=avi2swf%2Fvideoreader_vfw.cc;h=97486b9464bfe74e9d396d23ed59b1441e6daf73;hb=aa34df2f7434eb76f98ab1438c7d44d66ef418a4;hp=d605cf72f0791636718c8aa69a14a43d96233966;hpb=3fe3310fb999cc5ed13a9ffdedd7016b710c9c35;p=swftools.git diff --git a/avi2swf/videoreader_vfw.cc b/avi2swf/videoreader_vfw.cc index d605cf7..97486b9 100644 --- a/avi2swf/videoreader_vfw.cc +++ b/avi2swf/videoreader_vfw.cc @@ -49,19 +49,15 @@ typedef struct _videoreader_vfw_internal { int samplerate; int channels; + int flip; } videoreader_vfw_internal_t; static int avifile_initialized = 0; +static int verbose; -#define _TRACE_ {printf("%s: %d (%s)\n",__FILE__,__LINE__,__func__);fflush(stdout);} +#define _TRACE_ {printf("vfw: %s: %d (%s)\n",__FILE__,__LINE__,__func__);fflush(stdout);} -bool videoreader_vfw_eof(videoreader_t* vr) -{ - videoreader_vfw_internal_t* i = (videoreader_vfw_internal_t*)vr->internal; - return (i->video_pos >= i->video_end); -} - -static int bitmap_to_rgba(BITMAPINFOHEADER*bi, void*buffer, const int dest_width, const int dest_height) +static int bitmap_to_rgba(BITMAPINFOHEADER*bi, void*buffer, const int dest_width, const int dest_height, int flip) { UCHAR*data = (UCHAR*)(bi+1); // actual bitmap data starts after the header @@ -87,10 +83,19 @@ static int bitmap_to_rgba(BITMAPINFOHEADER*bi, void*buffer, const int dest_width int bytesperpixel = ((bi->biWidth*bi->biBitCount)+7)&~7; int linex = ((bytesperpixel/8)+3)&~3; memset(dest, 255, dest_width*dest_height*4);//pre-fill alpha channel + + const int starty = flip? 0 : dest_height-1; + const int endy = flip? dest_height : -1; + const int yinc = flip? 1 : -1; + + if(verbose) { + printf("vfw: Convering scanlines %d to %d from bpp %d, %d stepping, flip=%d\n", starty, endy, bi->biBitCount, yinc, flip); + } + if(bi->biBitCount==1) { - int y; UCHAR*img = data; - for(y=0;ybiBitCount==4) { - int y; UCHAR*img = &data[bi->biClrUsed*4]; UCHAR*pal = data; - for(y=0;ybiBitCount==8) { - int y; UCHAR*img = &data[bi->biClrUsed*4]; UCHAR*pal = data; - for(y=0;ybiBitCount==16) { + UCHAR*img = data; + int y; + for(y=starty;y!=endy;y+=yinc) { + UCHAR*line = &img[linex*y]; + int x; + for(x=0;x>5&0x1f)<<(16+3)|(c>>10&0x1f)<<(8+3); + line+=2; + } + } } else if(bi->biBitCount==24) { UCHAR*img = data; int y; - for(y=0;ybiBitCount==32) { UCHAR*img = data; int y; - for(y=0;yinternal; - if(videoreader_vfw_eof(vr)) + if (i->video_pos >= i->video_end) + i->video_eof = 1; + + if(i->video_eof) return 0; LPBITMAPINFOHEADER bi; @@ -169,7 +189,7 @@ int videoreader_vfw_getimage(videoreader_t* vr, void*buffer) return 0; } - if(!bitmap_to_rgba(bi, buffer, i->width, i->height)) { + if(!bitmap_to_rgba(bi, buffer, i->width, i->height, i->flip)) { fprintf(stderr, "couldn't convert bitmap to RGBA.\n"); return 0; } @@ -185,9 +205,12 @@ static int readAudioBlock(videoreader_vfw_internal_t* i, void*buf, int len) return bytes; } -int videoreader_vfw_getsamples(videoreader_t* vr, void*buf, int num) +static int videoreader_vfw_getsamples(videoreader_t* vr, void*buf, int num) { videoreader_vfw_internal_t* i = (videoreader_vfw_internal_t*)vr->internal; + + if(i->audio_eof) + return 0; switch(i->waveformat.wBitsPerSample) { case 1: { @@ -196,6 +219,7 @@ int videoreader_vfw_getsamples(videoreader_t* vr, void*buf, int num) do { ((SHORT*)buf)[t] = ((((BYTE*)buf)[t>>3])>>(t&7))<<15; } while(--t>=0); + if(!len) i->audio_eof = 1; return len*8; } case 8: { @@ -204,10 +228,13 @@ int videoreader_vfw_getsamples(videoreader_t* vr, void*buf, int num) do { ((SHORT*)buf)[t] = (((BYTE*)buf)[t]<<8)^0x8000; } while(--t>=0); + if(!len) i->audio_eof = 1; return len*2; } case 16: { - return readAudioBlock(i, buf, num); + int len = readAudioBlock(i, buf, num); + if(!len) i->audio_eof = 1; + return len; } default: { return 0; @@ -215,7 +242,7 @@ int videoreader_vfw_getsamples(videoreader_t* vr, void*buf, int num) } } -void videoreader_vfw_close(videoreader_t* vr) +static void videoreader_vfw_close(videoreader_t* vr) { videoreader_vfw_internal_t* i = (videoreader_vfw_internal_t*)vr->internal; @@ -233,7 +260,15 @@ void videoreader_vfw_close(videoreader_t* vr) free(vr->internal); vr->internal = 0; } -void videoreader_vfw_setparameter(videoreader_t* vr, char*name, char*value) {} +static void videoreader_vfw_setparameter(videoreader_t*vr, char*name, char*value) +{ + videoreader_vfw_internal_t* i = (videoreader_vfw_internal_t*)vr->internal; + if(!strcmp(name, "flip")) { + i->flip = atoi(value); + } else if(!strcmp(name, "verbose")) { + verbose = atoi(value); + } +} int videoreader_vfw_open(videoreader_t* vr, char* filename) { @@ -247,7 +282,6 @@ int videoreader_vfw_open(videoreader_t* vr, char* filename) memset(i, 0, sizeof(videoreader_vfw_internal_t)); vr->internal = i; - vr->eof = videoreader_vfw_eof; vr->getimage = videoreader_vfw_getimage; vr->getsamples = videoreader_vfw_getsamples; vr->close = videoreader_vfw_close; @@ -266,6 +300,10 @@ int videoreader_vfw_open(videoreader_t* vr, char* filename) /* calculate framerate */ i->fps = (double)info.dwRate/(double)info.dwScale; + if(verbose) { + printf("vfw: file %s has %f fps, and %d streams\n", i->fps, info.dwStreams); + } + unsigned int t=0; while(tvs) { + if(verbose) { + printf("vfw: video stream: %dx%d, %.2f\n", i->width, i->height, i->fps); + } vr->width = i->width; vr->height = i->height; vr->fps = i->fps; @@ -323,6 +364,9 @@ int videoreader_vfw_open(videoreader_t* vr, char* filename) fprintf(stderr, "AVIReader: Warning: No video stream\n"); } if(i->as) { + if(verbose) { + printf("vfw: audio stream: %d channels, %d samples/sec", i->channels, i->samplerate); + } vr->channels = i->channels; vr->samplerate = i->samplerate; } else {