mirror of
https://github.com/FFmpeg/FFmpeg.git
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92 lines
2.9 KiB
C
92 lines
2.9 KiB
C
/*
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* Multipart JPEG format
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* Copyright (c) 2000, 2001, 2002, 2003 Fabrice Bellard
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg 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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* FFmpeg 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 FFmpeg; 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 "libavutil/opt.h"
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#include "avformat.h"
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/* Multipart JPEG */
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#define BOUNDARY_TAG "ffserver"
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typedef struct MPJPEGContext {
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AVClass *class;
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char *boundary_tag;
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} MPJPEGContext;
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static int mpjpeg_write_header(AVFormatContext *s)
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{
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MPJPEGContext *mpj = s->priv_data;
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uint8_t buf1[256];
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snprintf(buf1, sizeof(buf1), "--%s\r\n", mpj->boundary_tag);
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avio_write(s->pb, buf1, strlen(buf1));
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avio_flush(s->pb);
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return 0;
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}
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static int mpjpeg_write_packet(AVFormatContext *s, AVPacket *pkt)
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{
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MPJPEGContext *mpj = s->priv_data;
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uint8_t buf1[256];
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snprintf(buf1, sizeof(buf1), "Content-type: image/jpeg\r\n");
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avio_write(s->pb, buf1, strlen(buf1));
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snprintf(buf1, sizeof(buf1), "Content-length: %d\r\n\r\n", pkt->size);
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avio_write(s->pb, buf1, strlen(buf1));
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avio_write(s->pb, pkt->data, pkt->size);
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snprintf(buf1, sizeof(buf1), "\r\n--%s\r\n", mpj->boundary_tag);
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avio_write(s->pb, buf1, strlen(buf1));
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return 0;
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}
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static int mpjpeg_write_trailer(AVFormatContext *s)
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{
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return 0;
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}
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static const AVOption options[] = {
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{ "boundary_tag", "Boundary tag", offsetof(MPJPEGContext, boundary_tag), AV_OPT_TYPE_STRING, {.str = BOUNDARY_TAG}, .flags = AV_OPT_FLAG_ENCODING_PARAM },
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{ NULL },
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};
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static const AVClass mpjpeg_muxer_class = {
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.class_name = "mpjpeg_muxer",
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.item_name = av_default_item_name,
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.option = options,
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.version = LIBAVUTIL_VERSION_INT,
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};
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AVOutputFormat ff_mpjpeg_muxer = {
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.name = "mpjpeg",
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.long_name = NULL_IF_CONFIG_SMALL("MIME multipart JPEG"),
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.mime_type = "multipart/x-mixed-replace;boundary=" BOUNDARY_TAG,
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.extensions = "mjpg",
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.priv_data_size = sizeof(MPJPEGContext),
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.audio_codec = AV_CODEC_ID_NONE,
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.video_codec = AV_CODEC_ID_MJPEG,
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.write_header = mpjpeg_write_header,
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.write_packet = mpjpeg_write_packet,
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.write_trailer = mpjpeg_write_trailer,
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.flags = AVFMT_NOTIMESTAMPS,
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.priv_class = &mpjpeg_muxer_class,
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};
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