jpegenc.c
上传用户:jxp0626
上传日期:2007-01-08
资源大小:102k
文件大小:2k
- /*
- * Miscellaneous MJPEG based formats
- * Copyright (c) 2000 Gerard Lantau.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
- #include <stdlib.h>
- #include <stdio.h>
- #include <netinet/in.h>
- #include <string.h>
- #include "mpegenc.h"
- /* Multipart JPEG */
- #define BOUNDARY_TAG "ffserver"
- static int mpjpeg_write_header(AVFormatContext *s)
- {
- UINT8 buf1[256];
- snprintf(buf1, sizeof(buf1), "--%sn", BOUNDARY_TAG);
- put_buffer(&s->pb, buf1, strlen(buf1));
- put_flush_packet(&s->pb);
- return 0;
- }
- static int mpjpeg_write_video(AVFormatContext *s, UINT8 *buf, int size)
- {
- UINT8 buf1[256];
- snprintf(buf1, sizeof(buf1), "Content-type: image/jpegnn");
- put_buffer(&s->pb, buf1, strlen(buf1));
- put_buffer(&s->pb, buf, size);
- snprintf(buf1, sizeof(buf1), "n--%sn", BOUNDARY_TAG);
- put_buffer(&s->pb, buf1, strlen(buf1));
- put_flush_packet(&s->pb);
- return 0;
- }
- static int mpjpeg_write_trailer(AVFormatContext *s)
- {
- return 0;
- }
- AVFormat mpjpeg_format = {
- "mpjpeg",
- "Mime multipart JPEG format",
- "multipart/x-mixed-replace;boundary=" BOUNDARY_TAG,
- "mjpg",
- CODEC_ID_NONE,
- CODEC_ID_MJPEG,
- mpjpeg_write_header,
- NULL,
- mpjpeg_write_video,
- mpjpeg_write_trailer,
- };
- /* single frame JPEG */
- static int jpeg_write_header(AVFormatContext *s)
- {
- return 0;
- }
- static int jpeg_write_video(AVFormatContext *s, UINT8 *buf, int size)
- {
- put_buffer(&s->pb, buf, size);
- put_flush_packet(&s->pb);
- return 1; /* no more data can be sent */
- }
- static int jpeg_write_trailer(AVFormatContext *s)
- {
- return 0;
- }
- AVFormat jpeg_format = {
- "jpeg",
- "JPEG image",
- "image/jpeg",
- "jpg,jpeg",
- CODEC_ID_NONE,
- CODEC_ID_MJPEG,
- jpeg_write_header,
- NULL,
- jpeg_write_video,
- jpeg_write_trailer,
- };