| 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 "internal.h" |
| 25 | #include "mathops.h" |
| 26 | |
| 27 | static int xbm_encode_frame(AVCodecContext *avctx, AVPacket *pkt, |
| 28 | const AVFrame *p, int *got_packet) |
| 29 | { |
| 30 | int i, j, ret, size, linesize; |
| 31 | uint8_t *ptr, *buf; |
| 32 | |
| 33 | linesize = (avctx->width + 7) / 8; |
| 34 | size = avctx->height * (linesize * 7 + 2) + 110; |
| 35 | if ((ret = ff_alloc_packet2(avctx, pkt, size)) < 0) |
| 36 | return ret; |
| 37 | |
| 38 | buf = pkt->data; |
| 39 | ptr = p->data[0]; |
| 40 | |
| 41 | buf += snprintf(buf, 32, "#define image_width %u\n", avctx->width); |
| 42 | buf += snprintf(buf, 33, "#define image_height %u\n", avctx->height); |
| 43 | buf += snprintf(buf, 40, "static unsigned char image_bits[] = {\n"); |
| 44 | for (i = 0; i < avctx->height; i++) { |
| 45 | for (j = 0; j < linesize; j++) |
| 46 | buf += snprintf(buf, 7, " 0x%02X,", ff_reverse[*ptr++]); |
| 47 | ptr += p->linesize[0] - linesize; |
| 48 | buf += snprintf(buf, 2, "\n"); |
| 49 | } |
| 50 | buf += snprintf(buf, 5, " };\n"); |
| 51 | |
| 52 | pkt->size = buf - pkt->data; |
| 53 | pkt->flags |= AV_PKT_FLAG_KEY; |
| 54 | *got_packet = 1; |
| 55 | return 0; |
| 56 | } |
| 57 | |
| 58 | AVCodec ff_xbm_encoder = { |
| 59 | .name = "xbm", |
| 60 | .long_name = NULL_IF_CONFIG_SMALL("XBM (X BitMap) image"), |
| 61 | .type = AVMEDIA_TYPE_VIDEO, |
| 62 | .id = AV_CODEC_ID_XBM, |
| 63 | .encode2 = xbm_encode_frame, |
| 64 | .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_MONOWHITE, |
| 65 | AV_PIX_FMT_NONE }, |
| 66 | }; |