// Allocate a uint8_t frame int chromalloc(uint8_t *m[3], y4m_stream_info_t *sinfo) { int fs,cfs; fs = y4m_si_get_plane_length(sinfo,0); cfs = y4m_si_get_plane_length(sinfo,1); // I'm gonna cheat and use this as an initialisation function. sic.h = y4m_si_get_plane_height(sinfo,0); sic.w = y4m_si_get_plane_width(sinfo,0); sic.ch = y4m_si_get_plane_height(sinfo,1); sic.cw = y4m_si_get_plane_width(sinfo,1); m[0] = (uint8_t *)malloc( fs ); m[1] = (uint8_t *)malloc( cfs); m[2] = (uint8_t *)malloc( cfs); if( !m[0] || !m[1] || !m[2]) { return -1; } else { return 0; } }
//Copy a uint8_t frame void chromacpy(uint8_t *m[3],uint8_t *n[3],y4m_stream_info_t *sinfo) { int fs,cfs; fs = y4m_si_get_plane_length(sinfo,0); cfs = y4m_si_get_plane_length(sinfo,1); memcpy (m[0],n[0],fs); memcpy (m[1],n[1],cfs); memcpy (m[2],n[2],cfs); }
// set a solid colour for a uint8_t frame void chromaset(uint8_t *m[3], y4m_stream_info_t *sinfo, int y, int u, int v ) { int fs,cfs; fs = y4m_si_get_plane_length(sinfo,0); cfs = y4m_si_get_plane_length(sinfo,1); memset (m[0],y,fs); memset (m[1],u,cfs); memset (m[2],v,cfs); }
void chromalloc(uint8_t *m[3],y4m_stream_info_t *sinfo) { int fs,cfs; fs = y4m_si_get_plane_length(sinfo,0); cfs = y4m_si_get_plane_length(sinfo,1); m[0] = (uint8_t *)malloc( fs ); m[1] = (uint8_t *)malloc( cfs); m[2] = (uint8_t *)malloc( cfs); }
int chromalloc(uint8_t *m[3],y4m_stream_info_t *sinfo) { int fs,cfs; fs = y4m_si_get_plane_length(sinfo,0); cfs = y4m_si_get_plane_length(sinfo,1); m[0] = (uint8_t *)malloc( fs ); m[1] = (uint8_t *)malloc( cfs); m[2] = (uint8_t *)malloc( cfs); if( !m[0] || !m[1] || !m[2]) { return -1; } else { return 0; } }
int y4m_si_get_framelength(const y4m_stream_info_t *si) { int total = 0; int planes = y4m_si_get_plane_count(si); int p; for (p = 0; p < planes; p++) { int plen = y4m_si_get_plane_length(si, p); if (plen == Y4M_UNKNOWN) return Y4M_UNKNOWN; total += plen; } return total; }
int y4m_js_decode_frame(y4m_cb_reader_t *r, y4m_stream_info_t *si, y4m_frame_info_t *fi, uint8_t *rgba) { int i, j; uint8_t *ycbcr[3]; int32_t plane_length[3]; int32_t width; int32_t height; int32_t ret_value; if(NULL == r || NULL == si || NULL == fi || NULL == rgba) { return Y4M_UNKNOWN; } if(3 != y4m_si_get_plane_count(si)) { return Y4M_UNKNOWN; } width = y4m_si_get_plane_width(si, 0); height = y4m_si_get_plane_height(si, 0); for(i = 0; i < 3; ++i) { plane_length[i] = y4m_si_get_plane_length(si, i); if(NULL == (ycbcr[i] = malloc(width * height))) { return Y4M_UNKNOWN; } } ret_value = y4m_read_frame_cb(r, si, fi, ycbcr); if(Y4M_OK != ret_value) { return ret_value; } chroma_supersample(Y4M_CHROMA_420JPEG, ycbcr, width, height); convert_YCbCr_to_RGB(ycbcr, width * height); for(i = 0; i < width * height; ++i) { for(j = 0; j < 3; ++j) { rgba[i * 4 + j] = ycbcr[j][i]; } } return Y4M_OK; }
int main(int argc, char **argv) { int i, fdin, ss_v, ss_h, chroma_ss, textout; int do_vectorscope; int pwidth, pheight; /* Needed for the vectorscope */ int plane0_l, plane1_l, plane2_l; u_char *yuv[3], *cp; #ifdef HAVE_SDLgfx int j; int temp_x, temp_y; u_char *cpx, *cpy; #endif y4m_stream_info_t istream; y4m_frame_info_t iframe; do_vectorscope = 0; scalepercent = 0; #ifdef HAVE_SDLgfx textout = 0; #else textout = 1; #endif while ((i = getopt(argc, argv, "tps:")) != EOF) { switch (i) { case 't': textout = 1; break; case 'p': scalepercent = 1; break; case 's': do_vectorscope = atoi(optarg); break; default: usage(); } } #ifdef HAVE_SDLgfx if ( (do_vectorscope < 0) || (do_vectorscope >16) ) usage(); /* Initialize SDL */ desired_bpp = 8; video_flags = 0; video_flags |= SDL_DOUBLEBUF; number_of_frames = 1; memset(fy_stats, '\0', sizeof (fy_stats)); memset(ly_stats, '\0', sizeof (ly_stats)); if ( SDL_Init(SDL_INIT_VIDEO) < 0 ) mjpeg_error_exit1("Couldn't initialize SDL:%s",SDL_GetError()); atexit(SDL_Quit); /* Clean up on exit */ /* Initialize the display */ if (do_vectorscope == 0) screen = SDL_SetVideoMode(width,heigth,desired_bpp,video_flags); else screen=SDL_SetVideoMode(width_v,heigth,desired_bpp,video_flags); if (screen == NULL) mjpeg_error_exit1("Couldn't set %dx%dx%d video mode: %s", width, heigth, desired_bpp, SDL_GetError()); SDL_WM_SetCaption("y4mhistogram", "y4mhistogram"); y4m_init_area(screen); /* Here we draw the basic layout */ #endif /* HAVE_SDLgfx */ fdin = fileno(stdin); y4m_accept_extensions(1); y4m_init_stream_info(&istream); y4m_init_frame_info(&iframe); if (y4m_read_stream_header(fdin, &istream) != Y4M_OK) mjpeg_error_exit1("stream header error"); if (y4m_si_get_plane_count(&istream) != 3) mjpeg_error_exit1("Only 3 plane formats supported"); pwidth = y4m_si_get_width(&istream); pheight = y4m_si_get_height(&istream); chroma_ss = y4m_si_get_chroma(&istream); ss_h = y4m_chroma_ss_x_ratio(chroma_ss).d; ss_v = y4m_chroma_ss_y_ratio(chroma_ss).d; plane0_l = y4m_si_get_plane_length(&istream, 0); plane1_l = y4m_si_get_plane_length(&istream, 1); plane2_l = y4m_si_get_plane_length(&istream, 2); yuv[0] = malloc(plane0_l); if (yuv[0] == NULL) mjpeg_error_exit1("malloc(%d) plane 0", plane0_l); yuv[1] = malloc(plane1_l); if (yuv[1] == NULL) mjpeg_error_exit1(" malloc(%d) plane 1", plane1_l); yuv[2] = malloc(plane2_l); if (yuv[2] == NULL) mjpeg_error_exit1(" malloc(%d) plane 2\n", plane2_l); while (y4m_read_frame(fdin,&istream,&iframe,yuv) == Y4M_OK) { for (i = 0, cp = yuv[0]; i < plane0_l; i++, cp++) y_stats[*cp]++; /* Y' */ for (i = 0, cp = yuv[1]; i < plane1_l; i++, cp++) u_stats[*cp]++; /* U */ for (i = 0, cp = yuv[2]; i < plane2_l; i++, cp++) v_stats[*cp]++; /* V */ #ifdef HAVE_SDLgfx if (do_vectorscope >= 1 ) { for (i=0; i<260; i++) /* Resetting the vectorfield */ for (j=0;j<260;j++) vectorfield[i][j]=0; cpx = yuv[1]; cpy = yuv[2]; for (i=0; i < (pheight/ss_h); i++) { for (j = 0; j < (pwidth/ss_v); j++) { cpx++; cpy++; /* Have no idea why I have to multiply it with that values But than the vectorsscope works correct. If someone has a explantion or better fix tell me. Bernhard */ temp_x = round( 128+ ((*cpx-128) * 0.7857) ); temp_y = round( 128+ ((*cpy-128) * 1.1143) ); vectorfield[temp_x][temp_y*-1]=1; } /* Here we got to the n'th next line if needed */ i = i + (do_vectorscope-1); cpy = cpy + (pwidth/ss_v) * (do_vectorscope-1); cpx = cpx + (pwidth/ss_v) * (do_vectorscope-1); } } make_stat(); /* showing the sats */ SDL_UpdateRect(screen,0,0,0,0); /* updating all */ /* Events for SDL */ HandleEvent(); #endif } y4m_fini_frame_info(&iframe); y4m_fini_stream_info(&istream); if (textout) { for (i = 0; i < 255; i++) printf("Y %d %lld\n", i, y_stats[i]); for (i = 0; i < 255; i++) printf("U %d %lld\n", i, u_stats[i]); for (i = 0; i < 255; i++) printf("V %d %lld\n", i, v_stats[i]); } exit(0); }
int main(int argc, char **argv) { int fdin, fdout, err, c, i, verbose = 1; y4m_stream_info_t istream, ostream; y4m_frame_info_t iframe; fdin = fileno(stdin); fdout = fileno(stdout); y4m_accept_extensions(1); y4m_init_stream_info(&istream); y4m_init_frame_info(&iframe); while ((c = getopt(argc, argv, "L:C:hv:N")) != EOF) { switch (c) { case 'N': lowuv = lowy = 0; lowuv = highy = 255; break; case 'L': i = sscanf(optarg, "%lf,%lf,%d", &y_radius, &y_amount, &y_threshold); if (i != 3) { mjpeg_error("-L r,a,t"); usage(argv[0]); } break; case 'C': i = sscanf(optarg, "%lf,%lf,%d", &uv_radius, &uv_amount, &uv_threshold); if (i != 3) { mjpeg_error("-C r,a,t"); usage(argv[0]); } break; case 'v': verbose = atoi(optarg); if (verbose < 0 || verbose > 2) mjpeg_error_exit1("-v 0|1|2"); break; case 'h': default: usage(argv[0]); break; } } if (isatty(fdout)) mjpeg_error_exit1("stdout must not be a terminal"); mjpeg_default_handler_verbosity(verbose); err = y4m_read_stream_header(fdin, &istream); if (err != Y4M_OK) mjpeg_error_exit1("Couldn't read input stream header"); switch (y4m_si_get_interlace(&istream)) { case Y4M_ILACE_NONE: interlaced = 0; break; case Y4M_ILACE_BOTTOM_FIRST: case Y4M_ILACE_TOP_FIRST: interlaced = 1; break; default: mjpeg_error_exit1("Unsupported/unknown interlacing"); } if (y4m_si_get_plane_count(&istream) != 3) mjpeg_error_exit1("Only 3 plane formats supported"); yheight = y4m_si_get_plane_height(&istream, 0); uvheight = y4m_si_get_plane_height(&istream, 1); ywidth = y4m_si_get_plane_width(&istream, 0); uvwidth = y4m_si_get_plane_width(&istream, 1); ylen = y4m_si_get_plane_length(&istream, 0); uvlen = y4m_si_get_plane_length(&istream, 1); /* Input and output frame buffers */ i_yuv[0] = (u_char *)malloc(ylen); i_yuv[1] = (u_char *)malloc(uvlen); i_yuv[2] = (u_char *)malloc(uvlen); o_yuv[0] = (u_char *)malloc(ylen); o_yuv[1] = (u_char *)malloc(uvlen); o_yuv[2] = (u_char *)malloc(uvlen); /* * general purpose row/column scratch buffers. Slightly over allocated to * simplify life. */ cur_col = (u_char *)malloc(MAX(ywidth, yheight)); dest_col = (u_char *)malloc(MAX(ywidth, yheight)); cur_row = (u_char *)malloc(MAX(ywidth, yheight)); dest_row = (u_char *)malloc(MAX(ywidth, yheight)); /* * Generate the convolution matrices. The generation routine allocates the * memory and returns the length. */ cmatrix_y_len = gen_convolve_matrix(y_radius, &cmatrix_y); cmatrix_uv_len = gen_convolve_matrix(uv_radius, &cmatrix_uv); ctable_y = gen_lookup_table(cmatrix_y, cmatrix_y_len); ctable_uv = gen_lookup_table(cmatrix_uv, cmatrix_uv_len); y4m_init_stream_info(&ostream); y4m_copy_stream_info(&ostream, &istream); y4m_write_stream_header(fileno(stdout), &ostream); mjpeg_info("Luma radius: %f", y_radius); mjpeg_info("Luma amount: %f", y_amount); mjpeg_info("Luma threshold: %d", y_threshold); if (uv_radius != -1.0) { mjpeg_info("Chroma radius: %f", uv_radius); mjpeg_info("Chroma amount: %f", uv_amount); mjpeg_info("Chroma threshold: %d", uv_threshold); } for (frameno = 0; y4m_read_frame(fdin, &istream, &iframe, i_yuv) == Y4M_OK; frameno++) { y4munsharp(); err = y4m_write_frame(fdout, &ostream, &iframe, o_yuv); if (err != Y4M_OK) { mjpeg_error("y4m_write_frame err at frame %d", frameno); break; } } y4m_fini_frame_info(&iframe); y4m_fini_stream_info(&istream); y4m_fini_stream_info(&ostream); exit(0); }
int main(int argc, char **argv) { int i, c, interlace, frames, err; int ywidth, yheight, uvwidth, uvheight, ylen, uvlen; int verbose = 0, fdin; int NlumaX = 4, NlumaY = 4, NchromaX = 4, NchromaY = 4; float BWlumaX = 0.8, BWlumaY = 0.8, BWchromaX = 0.7, BWchromaY = 0.7; struct filter *lumaXtaps, *lumaYtaps, *chromaXtaps, *chromaYtaps; u_char *yuvinout[3]; float *yuvtmp1,*yuvtmp2; y4m_stream_info_t istream, ostream; y4m_frame_info_t iframe; fdin = fileno(stdin); y4m_accept_extensions(1); /* read command line */ opterr = 0; while ((c = getopt(argc, argv, "hvL:C:x:X:y:Y:")) != EOF) { switch (c) { case 'L': sscanf(optarg,"%d,%f,%d,%f",&NlumaX,&BWlumaX,&NlumaY,&BWlumaY); break; case 'C': sscanf(optarg,"%d,%f,%d,%f",&NchromaX,&BWchromaX,&NchromaY,&BWchromaY); break; case 'x': sscanf(optarg,"%d,%f",&NchromaX,&BWchromaX); break; case 'X': sscanf(optarg,"%d,%f",&NlumaX,&BWlumaX); break; case 'y': sscanf(optarg,"%d,%f",&NchromaY,&BWchromaY); break; case 'Y': sscanf(optarg,"%d,%f",&NlumaY,&BWlumaY); break; case 'v': verbose++; break; case '?': case 'h': default: usage(); } } if (BWlumaX <= 0.0 || BWlumaX > 1.0) mjpeg_error_exit1("Horizontal luma bandwidth '%f' not >0 and <=1.0", BWlumaX); if (BWlumaY <= 0.0 || BWlumaY > 1.0) mjpeg_error_exit1("Vertical luma bandwidth '%f' not >0 and <=1.0", BWlumaY); if (BWchromaX <= 0.0 || BWchromaX > 1.0) mjpeg_error_exit1("Horizontal chroma bandwidth '%f' not >0 and <=1.0", BWchromaX); if (BWchromaY <= 0.0 || BWchromaY > 1.0) mjpeg_error_exit1("Vertical chroma bandwidth '%f' not >0 and <=1.0", BWchromaY); /* initialize input stream and check chroma subsampling and interlacing */ y4m_init_stream_info(&istream); y4m_init_frame_info(&iframe); err = y4m_read_stream_header(fdin, &istream); if (err != Y4M_OK) mjpeg_error_exit1("Input stream error: %s\n", y4m_strerr(err)); if (y4m_si_get_plane_count(&istream) != 3) mjpeg_error_exit1("Only the 3 plane formats supported"); i = y4m_si_get_interlace(&istream); switch (i) { case Y4M_ILACE_NONE: interlace = 0; break; case Y4M_ILACE_BOTTOM_FIRST: case Y4M_ILACE_TOP_FIRST: interlace = 1; break; default: mjpeg_warn("Unknown interlacing '%d', assuming non-interlaced", i); interlace = 0; break; } ywidth = y4m_si_get_width(&istream); /* plane 0 = Y */ yheight = y4m_si_get_height(&istream); ylen = ywidth * yheight; uvwidth = y4m_si_get_plane_width(&istream, 1); /* planes 1&2 = U+V */ uvheight = y4m_si_get_plane_height(&istream, 1); uvlen = y4m_si_get_plane_length(&istream, 1); /* initialize output stream */ y4m_init_stream_info(&ostream); y4m_copy_stream_info(&ostream, &istream); y4m_write_stream_header(fileno(stdout), &ostream); /* allocate input and output buffers */ yuvinout[0] = my_malloc(ylen*sizeof(u_char)); yuvinout[1] = my_malloc(uvlen*sizeof(u_char)); yuvinout[2] = my_malloc(uvlen*sizeof(u_char)); yuvtmp1 = my_malloc(MAX(ylen,uvlen)*sizeof(float)); yuvtmp2 = my_malloc(MAX(ylen,uvlen)*sizeof(float)); /* get filter taps */ lumaXtaps = get_coeff(NlumaX, BWlumaX); lumaYtaps = get_coeff(NlumaY, BWlumaY); chromaXtaps = get_coeff(NchromaX, BWchromaX); chromaYtaps = get_coeff(NchromaY, BWchromaY); set_accel(uvwidth,uvheight); if (verbose) y4m_log_stream_info(mjpeg_loglev_t("info"), "", &istream); /* main processing loop */ for (frames=0; y4m_read_frame(fdin,&istream,&iframe,yuvinout) == Y4M_OK; frames++) { if (verbose && ((frames % 100) == 0)) mjpeg_info("Frame %d\n", frames); convolveFrame(yuvinout[0],ywidth,yheight,interlace,lumaXtaps,lumaYtaps,yuvtmp1,yuvtmp2); convolveFrame(yuvinout[1],uvwidth,uvheight,interlace,chromaXtaps,chromaYtaps,yuvtmp1,yuvtmp2); convolveFrame(yuvinout[2],uvwidth,uvheight,interlace,chromaXtaps,chromaYtaps,yuvtmp1,yuvtmp2); y4m_write_frame(fileno(stdout), &ostream, &iframe, yuvinout); } /* clean up */ y4m_fini_frame_info(&iframe); y4m_fini_stream_info(&istream); y4m_fini_stream_info(&ostream); exit(0); }
int main(int argc, char **argv) { int c, err, ilace; int fd_in = fileno(stdin), fd_out = fileno(stdout); y4m_ratio_t rate; y4m_stream_info_t si, so; y4m_frame_info_t fi; uint8_t *top1[3], *bot1[3], *top2[3], *bot2[3]; opterr = 0; while ((c = getopt(argc, argv, "h")) != EOF) { switch (c) { case 'h': case '?': default: usage(); } } y4m_accept_extensions(1); y4m_init_stream_info(&si); y4m_init_stream_info(&so); y4m_init_frame_info(&fi); err = y4m_read_stream_header(fd_in, &si); if (err != Y4M_OK) mjpeg_error_exit1("Input stream error: %s\n", y4m_strerr(err)); if (y4m_si_get_plane_count(&si) != 3) mjpeg_error_exit1("only 3 plane formats supported"); rate = y4m_si_get_framerate(&si); if (!Y4M_RATIO_EQL(rate, y4m_fps_NTSC)) mjpeg_error_exit1("input stream not NTSC 30000:1001"); ilace = y4m_si_get_interlace(&si); if (ilace != Y4M_ILACE_BOTTOM_FIRST && ilace != Y4M_ILACE_TOP_FIRST) mjpeg_error_exit1("input stream not interlaced"); top1[0] = (uint8_t *) malloc(y4m_si_get_plane_length(&si,0) / 2); top1[1] = (uint8_t *) malloc(y4m_si_get_plane_length(&si,1) / 2); top1[2] = (uint8_t *) malloc(y4m_si_get_plane_length(&si,2) / 2); bot1[0] = (uint8_t *) malloc(y4m_si_get_plane_length(&si,0) / 2); bot1[1] = (uint8_t *) malloc(y4m_si_get_plane_length(&si,1) / 2); bot1[2] = (uint8_t *) malloc(y4m_si_get_plane_length(&si,2) / 2); top2[0] = (uint8_t *) malloc(y4m_si_get_plane_length(&si,0) / 2); top2[1] = (uint8_t *) malloc(y4m_si_get_plane_length(&si,1) / 2); top2[2] = (uint8_t *) malloc(y4m_si_get_plane_length(&si,2) / 2); bot2[0] = (uint8_t *) malloc(y4m_si_get_plane_length(&si,0) / 2); bot2[1] = (uint8_t *) malloc(y4m_si_get_plane_length(&si,1) / 2); bot2[2] = (uint8_t *) malloc(y4m_si_get_plane_length(&si,2) / 2); y4m_copy_stream_info(&so, &si); y4m_si_set_framerate(&so, y4m_fps_NTSC_FILM); y4m_si_set_interlace(&so, Y4M_ILACE_NONE); /* * At this point the input stream has been verified to be interlaced NTSC, * the output stream rate set to NTSC_FILM, interlacing tag changed to * progressive, and the field buffers allocated. * * Time to write the output stream header and commence processing input. */ y4m_write_stream_header(fd_out, &so); while (1) { err = y4m_read_fields(fd_in, &si, &fi, top1, bot1); if (err != Y4M_OK) goto done; y4m_write_fields(fd_out, &so, &fi, top1, bot1); /* A */ err = y4m_read_fields(fd_in, &si, &fi, top1, bot1); if (err != Y4M_OK) goto done; y4m_write_fields(fd_out, &so, &fi, top1, bot1); /* B */ err = y4m_read_fields(fd_in, &si, &fi, top1, bot1); if (err != Y4M_OK) goto done; err = y4m_read_fields(fd_in, &si, &fi, top2, bot2); if (err != Y4M_OK) { /* * End of input when reading the 2nd "mixed field" frame (C+D). The previous * frame was the first "mixed field" frame (B+C). Rather than emit a mixed * interlaced frame duplicate a field and output the previous frame. */ if (ilace == Y4M_ILACE_BOTTOM_FIRST) y4m_write_fields(fd_out, &so, &fi, bot1,bot1); else y4m_write_fields(fd_out, &so, &fi, top1,top1); goto done; } /* * Now the key part of the processing - effectively discarding the first mixed * frame with fields from frames B + C and creating the C frame from the two * mixed frames. For a BOTTOM FIELD FIRST stream use the 'top' field from * frame 3 and the 'bottom' fields from frame 4. With a TOP FIELD FIRST stream * it's the other way around - use the 'bottom' field from frame 3 and the * 'top' field from frame 4. */ if (ilace == Y4M_ILACE_BOTTOM_FIRST) y4m_write_fields(fd_out, &so, &fi, top1, bot2); /* C */ else y4m_write_fields(fd_out, &so, &fi, top2, bot1); /* C */ err = y4m_read_fields(fd_in, &si, &fi, top1, bot1); y4m_write_fields(fd_out, &so, &fi, top1, bot1); /* D */ } done: y4m_fini_frame_info(&fi); y4m_fini_stream_info(&si); y4m_fini_stream_info(&so); exit(0); }
int main(int argc, char **argv) { int sts, c, width = 640, height = 480, noheader = 0; int Y = 16, U = 128, V = 128, chroma_mode = Y4M_CHROMA_420MPEG2; int numframes = 1, force = 0; y4m_ratio_t rate_ratio = y4m_fps_NTSC; y4m_ratio_t aspect_ratio = y4m_sar_SQUARE; int plane_length[3]; u_char *yuv[3]; y4m_stream_info_t ostream; y4m_frame_info_t oframe; char interlace = Y4M_ILACE_NONE; opterr = 0; y4m_accept_extensions(1); while ((c = getopt(argc, argv, "Hfx:w:h:r:i:a:Y:U:V:n:")) != EOF) { switch (c) { case 'H': noheader = 1; break; case 'a': sts = y4m_parse_ratio(&aspect_ratio, optarg); if (sts != Y4M_OK) mjpeg_error_exit1("Invalid aspect: %s", optarg); break; case 'w': width = atoi(optarg); break; case 'h': height = atoi(optarg); break; case 'r': sts = y4m_parse_ratio(&rate_ratio, optarg); if (sts != Y4M_OK) mjpeg_error_exit1("Invalid rate: %s", optarg); break; case 'Y': Y = atoi(optarg); break; case 'U': U = atoi(optarg); break; case 'V': V = atoi(optarg); break; case 'i': switch (optarg[0]) { case 'p': interlace = Y4M_ILACE_NONE; break; case 't': interlace = Y4M_ILACE_TOP_FIRST; break; case 'b': interlace = Y4M_ILACE_BOTTOM_FIRST; break; default: usage(); } break; case 'x': chroma_mode = y4m_chroma_parse_keyword(optarg); if (chroma_mode == Y4M_UNKNOWN) { if (strcmp(optarg, "help") != 0) mjpeg_error("Invalid -x arg '%s'", optarg); chroma_usage(); } break; case 'f': force = 1; break; case 'n': numframes = atoi(optarg); break; case '?': default: usage(); } } if (width <= 0) mjpeg_error_exit1("Invalid Width: %d", width); if (height <= 0) mjpeg_error_exit1("Invalid Height: %d", height); if (!force && (Y < 16 || Y > 235)) mjpeg_error_exit1("16 < Y < 235"); if (!force && (U < 16 || U > 240)) mjpeg_error_exit1("16 < U < 240"); if (!force && (V < 16 || V > 240)) mjpeg_error_exit1("16 < V < 240"); y4m_init_stream_info(&ostream); y4m_init_frame_info(&oframe); y4m_si_set_width(&ostream, width); y4m_si_set_height(&ostream, height); y4m_si_set_interlace(&ostream, interlace); y4m_si_set_framerate(&ostream, rate_ratio); y4m_si_set_sampleaspect(&ostream, aspect_ratio); y4m_si_set_chroma(&ostream, chroma_mode); if (y4m_si_get_plane_count(&ostream) != 3) mjpeg_error_exit1("Only the 3 plane formats supported"); plane_length[0] = y4m_si_get_plane_length(&ostream, 0); plane_length[1] = y4m_si_get_plane_length(&ostream, 1); plane_length[2] = y4m_si_get_plane_length(&ostream, 2); yuv[0] = malloc(plane_length[0]); yuv[1] = malloc(plane_length[1]); yuv[2] = malloc(plane_length[2]); /* * Now fill the array once with black but use the provided Y, U and V values */ memset(yuv[0], Y, plane_length[0]); memset(yuv[1], U, plane_length[1]); memset(yuv[2], V, plane_length[2]); if (noheader == 0) y4m_write_stream_header(fileno(stdout), &ostream); while (numframes--) y4m_write_frame(fileno(stdout), &ostream, &oframe, yuv); free(yuv[0]); free(yuv[1]); free(yuv[2]); y4m_fini_stream_info(&ostream); y4m_fini_frame_info(&oframe); exit(0); }