| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * XBM image format | ||
| 3 | * | ||
| 4 | * Copyright (c) 2012 Paul B Mahol | ||
| 5 | * | ||
| 6 | * This file is part of FFmpeg. | ||
| 7 | * | ||
| 8 | * FFmpeg is free software; you can redistribute it and/or | ||
| 9 | * modify it under the terms of the GNU Lesser General Public | ||
| 10 | * License as published by the Free Software Foundation; either | ||
| 11 | * version 2.1 of the License, or (at your option) any later version. | ||
| 12 | * | ||
| 13 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 16 | * Lesser General Public License for more details. | ||
| 17 | * | ||
| 18 | * You should have received a copy of the GNU Lesser General Public | ||
| 19 | * License along with FFmpeg; if not, write to the Free Software | ||
| 20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 21 | */ | ||
| 22 | |||
| 23 | #include "avcodec.h" | ||
| 24 | #include "codec_internal.h" | ||
| 25 | #include "encode.h" | ||
| 26 | |||
| 27 | #define ANSI_MIN_READLINE 509 | ||
| 28 | |||
| 29 | 38 | static int xbm_encode_frame(AVCodecContext *avctx, AVPacket *pkt, | |
| 30 | const AVFrame *p, int *got_packet) | ||
| 31 | { | ||
| 32 | int i, j, l, commas, ret, size, linesize, lineout, rowsout; | ||
| 33 | const uint8_t *ptr; | ||
| 34 | uint8_t *buf; | ||
| 35 | |||
| 36 | 38 | linesize = lineout = (avctx->width + 7) / 8; | |
| 37 | 38 | commas = avctx->height * linesize; | |
| 38 | |||
| 39 | /* ANSI worst case minimum readline is 509 chars. */ | ||
| 40 | 38 | rowsout = avctx->height; | |
| 41 |
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38 | if (lineout > (ANSI_MIN_READLINE / 6)) { |
| 42 | ✗ | lineout = ANSI_MIN_READLINE / 6; | |
| 43 | ✗ | rowsout = (commas + lineout - 1) / lineout; | |
| 44 | } | ||
| 45 | |||
| 46 | 38 | size = rowsout * (lineout * 6 + 1) + 106; | |
| 47 |
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38 | if ((ret = ff_alloc_packet(avctx, pkt, size)) < 0) |
| 48 | ✗ | return ret; | |
| 49 | |||
| 50 | 38 | buf = pkt->data; | |
| 51 | 38 | ptr = p->data[0]; | |
| 52 | |||
| 53 | 38 | buf += snprintf(buf, 32, "#define image_width %u\n", avctx->width); | |
| 54 | 38 | buf += snprintf(buf, 33, "#define image_height %u\n", avctx->height); | |
| 55 | 38 | buf += snprintf(buf, 39, "static unsigned char image_bits[] = {\n"); | |
| 56 |
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10982 | for (i = 0, l = lineout; i < avctx->height; i++) { |
| 57 |
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492442 | for (j = 0; j < linesize; j++) { |
| 58 | // 0..15 bitreversed as chars | ||
| 59 | static const char lut[] = { | ||
| 60 | '0', '8', '4', 'C', '2', 'A', '6', 'E', | ||
| 61 | '1', '9', '5', 'D', '3', 'B', '7', 'F' | ||
| 62 | }; | ||
| 63 | 481536 | buf[0] = ' '; | |
| 64 | 481536 | buf[1] = '0'; | |
| 65 | 481536 | buf[2] = 'x'; | |
| 66 | 481536 | buf[3] = lut[*ptr & 0xF]; | |
| 67 | 481536 | buf[4] = lut[*ptr >> 4]; | |
| 68 | 481536 | buf += 5; | |
| 69 | 481536 | ptr++; | |
| 70 |
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481536 | if (--commas <= 0) { |
| 71 | 38 | *buf++ = '\n'; | |
| 72 | 38 | break; | |
| 73 | } | ||
| 74 | 481498 | *buf++ = ','; | |
| 75 |
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481498 | if (--l <= 0) { |
| 76 | 10906 | *buf++ = '\n'; | |
| 77 | 10906 | l = lineout; | |
| 78 | } | ||
| 79 | } | ||
| 80 | 10944 | ptr += p->linesize[0] - linesize; | |
| 81 | } | ||
| 82 | 38 | buf += snprintf(buf, 5, " };\n"); | |
| 83 | |||
| 84 | 38 | pkt->size = buf - pkt->data; | |
| 85 | 38 | *got_packet = 1; | |
| 86 | 38 | return 0; | |
| 87 | } | ||
| 88 | |||
| 89 | const FFCodec ff_xbm_encoder = { | ||
| 90 | .p.name = "xbm", | ||
| 91 | CODEC_LONG_NAME("XBM (X BitMap) image"), | ||
| 92 | .p.type = AVMEDIA_TYPE_VIDEO, | ||
| 93 | .p.id = AV_CODEC_ID_XBM, | ||
| 94 | .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE, | ||
| 95 | FF_CODEC_ENCODE_CB(xbm_encode_frame), | ||
| 96 | .p.pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_MONOWHITE, | ||
| 97 | AV_PIX_FMT_NONE }, | ||
| 98 | }; | ||
| 99 |