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blind-split-chans.c - blind - suckless command-line video editing utility |
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git clone git://git.suckless.org/blind |
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blind-split-chans.c (2876B) |
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1 /* See LICENSE file for copyright and license details. */ |
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2 #include "common.h" |
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3 |
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4 USAGE("[-c] X-file Y-file Z-file [alpha-file]") |
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5 |
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6 int |
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7 main(int argc, char *argv[]) |
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8 { |
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9 struct stream stream; |
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10 char xbuf[sizeof(stream.buf)], ybuf[sizeof(xbuf)], zbuf[sizeof(x… |
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11 int xfd, yfd, zfd, afd = -1; |
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12 size_t i, n, ptr, cs; |
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13 int all_channels = 1; |
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14 |
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15 ARGBEGIN { |
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16 case 'c': |
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17 all_channels = 0; |
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18 break; |
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19 default: |
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20 usage(); |
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21 } ARGEND; |
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22 |
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23 if (argc != 3 && argc != 4) |
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24 usage(); |
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25 |
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26 eopen_stream(&stream, NULL); |
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27 CHECK_ALPHA_CHAN(&stream); |
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28 CHECK_N_CHAN(&stream, 4, 4); |
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29 |
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30 xfd = eopen(argv[0], O_WRONLY | O_CREAT | O_TRUNC, 0666); |
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31 yfd = eopen(argv[1], O_WRONLY | O_CREAT | O_TRUNC, 0666); |
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32 zfd = eopen(argv[2], O_WRONLY | O_CREAT | O_TRUNC, 0666); |
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33 if (argc == 4) |
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34 afd = eopen(argv[3], O_WRONLY | O_CREAT | O_TRUNC, 0666); |
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35 |
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36 if (DPRINTF_HEAD(xfd, stream.frames, stream.width, stream.height… |
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37 eprintf("dprintf %s:", argv[0]); |
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38 if (DPRINTF_HEAD(yfd, stream.frames, stream.width, stream.height… |
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39 eprintf("dprintf %s:", argv[1]); |
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40 if (DPRINTF_HEAD(zfd, stream.frames, stream.width, stream.height… |
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41 eprintf("dprintf %s:", argv[2]); |
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42 if (afd >= 0 && DPRINTF_HEAD(afd, stream.frames, stream.width, s… |
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43 eprintf("dprintf %s:", argv[3]); |
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44 |
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45 if (!all_channels) { |
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46 memset(xbuf, 0, sizeof(xbuf)); |
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47 memset(ybuf, 0, sizeof(ybuf)); |
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48 memset(zbuf, 0, sizeof(zbuf)); |
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49 memset(abuf, 0, sizeof(abuf)); |
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50 } |
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51 |
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52 cs = stream.chan_size; |
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53 n = (stream.n_chan - (afd < 0)) * cs; |
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54 do { |
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55 for (ptr = 0; ptr + stream.pixel_size <= stream.ptr; ptr… |
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56 if (all_channels) { |
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57 for (i = 0; i < n; i += cs) { |
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58 memcpy(xbuf + ptr + i, stream.bu… |
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59 memcpy(ybuf + ptr + i, stream.bu… |
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60 memcpy(zbuf + ptr + i, stream.bu… |
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61 if (afd >= 0) |
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62 memcpy(abuf + ptr + i, s… |
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63 } |
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64 } else { |
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65 memcpy(xbuf + ptr + 0 * cs, stream.buf +… |
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66 memcpy(ybuf + ptr + 1 * cs, stream.buf +… |
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67 memcpy(zbuf + ptr + 2 * cs, stream.buf +… |
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68 if (afd >= 0) |
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69 memcpy(abuf + ptr + 3 * cs, stre… |
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70 } |
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71 if (afd < 0) { |
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72 memcpy(xbuf + ptr + n, stream.buf + ptr … |
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73 memcpy(ybuf + ptr + n, stream.buf + ptr … |
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74 memcpy(zbuf + ptr + n, stream.buf + ptr … |
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75 } |
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76 } |
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77 ewriteall(xfd, xbuf, ptr, argv[0]); |
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78 ewriteall(yfd, ybuf, ptr, argv[1]); |
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79 ewriteall(zfd, zbuf, ptr, argv[2]); |
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80 if (afd >= 0) |
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81 ewriteall(afd, abuf, ptr, argv[3]); |
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82 memmove(stream.buf, stream.buf + ptr, stream.ptr -= ptr); |
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83 } while (eread_stream(&stream, SIZE_MAX)); |
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84 if (stream.ptr) |
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85 eprintf("%s: incomplete frame\n", stream.file); |
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86 |
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87 close(xfd); |
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88 close(yfd); |
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89 close(zfd); |
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90 if (afd >= 0) |
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91 close(afd); |
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92 return 0; |
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93 } |
