mirror of https://github.com/FFmpeg/FFmpeg.git
Signed-off-by: Paul B Mahol <onemda@gmail.com> Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>pull/3/merge
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9 changed files with 95 additions and 2 deletions
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/*
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* XBM image format |
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* |
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* Copyright (c) 2012 Paul B Mahol |
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* |
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* This file is part of Libav. |
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* |
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* Libav is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* Libav is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with Libav; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include "avcodec.h" |
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#include "internal.h" |
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static av_cold int xbm_encode_init(AVCodecContext *avctx) |
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{ |
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avctx->coded_frame = avcodec_alloc_frame(); |
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if (!avctx->coded_frame) |
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return AVERROR(ENOMEM); |
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avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I; |
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return 0; |
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} |
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static int xbm_encode_frame(AVCodecContext *avctx, AVPacket *pkt, |
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const AVFrame *p, int *got_packet) |
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{ |
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int i, j, ret, size, linesize; |
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uint8_t *ptr, *buf; |
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linesize = (avctx->width + 7) / 8; |
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size = avctx->height * (linesize * 7 + 2) + 110; |
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if ((ret = ff_alloc_packet(pkt, size)) < 0) { |
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av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n"); |
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return ret; |
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} |
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buf = pkt->data; |
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ptr = p->data[0]; |
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buf += snprintf(buf, 32, "#define image_width %u\n", avctx->width); |
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buf += snprintf(buf, 33, "#define image_height %u\n", avctx->height); |
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buf += snprintf(buf, 40, "static unsigned char image_bits[] = {\n"); |
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for (i = 0; i < avctx->height; i++) { |
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for (j = 0; j < linesize; j++) |
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buf += snprintf(buf, 7, " 0x%02X,", av_reverse[*ptr++]); |
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ptr += p->linesize[0] - linesize; |
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buf += snprintf(buf, 2, "\n"); |
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} |
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buf += snprintf(buf, 5, " };\n"); |
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pkt->size = buf - pkt->data; |
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pkt->flags |= AV_PKT_FLAG_KEY; |
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*got_packet = 1; |
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return 0; |
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} |
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static av_cold int xbm_encode_close(AVCodecContext *avctx) |
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{ |
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av_freep(&avctx->coded_frame); |
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return 0; |
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} |
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AVCodec ff_xbm_encoder = { |
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.name = "xbm", |
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.type = AVMEDIA_TYPE_VIDEO, |
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.id = CODEC_ID_XBM, |
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.init = xbm_encode_init, |
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.encode2 = xbm_encode_frame, |
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.close = xbm_encode_close, |
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.pix_fmts = (const enum PixelFormat[]) { PIX_FMT_MONOWHITE, |
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PIX_FMT_NONE }, |
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.long_name = NULL_IF_CONFIG_SMALL("XBM (X BitMap) image"), |
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}; |
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