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authorFabrice Bellard <fabrice@bellard.org>2003-02-02 19:18:09 +0000
committerFabrice Bellard <fabrice@bellard.org>2003-02-02 19:18:09 +0000
commit0250738f13ff26aa84e4da3f55ea1b509a0359e7 (patch)
tree16c06f7c05393e909f61101be502834a096c4097 /libavformat/mpjpeg.c
parent12b64a225296e1c356a2bd69909abc541deb714c (diff)
downloadffmpeg-0250738f13ff26aa84e4da3f55ea1b509a0359e7.tar.gz
added jpeg image encoder and decoder (new YUV handling routines and mjpeg codec fixes are necessary to go further)
Originally committed as revision 1534 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavformat/mpjpeg.c')
-rw-r--r--libavformat/mpjpeg.c108
1 files changed, 108 insertions, 0 deletions
diff --git a/libavformat/mpjpeg.c b/libavformat/mpjpeg.c
new file mode 100644
index 0000000000..f5ff451121
--- /dev/null
+++ b/libavformat/mpjpeg.c
@@ -0,0 +1,108 @@
+/*
+ * Multipart JPEG format
+ * Copyright (c) 2000, 2001, 2002, 2003 Fabrice Bellard.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#include "avformat.h"
+
+/* Multipart JPEG */
+
+#define BOUNDARY_TAG "ffserver"
+
+static int mpjpeg_write_header(AVFormatContext *s)
+{
+ UINT8 buf1[256];
+
+ snprintf(buf1, sizeof(buf1), "--%s\n", BOUNDARY_TAG);
+ put_buffer(&s->pb, buf1, strlen(buf1));
+ put_flush_packet(&s->pb);
+ return 0;
+}
+
+static int mpjpeg_write_packet(AVFormatContext *s, int stream_index,
+ UINT8 *buf, int size, int force_pts)
+{
+ UINT8 buf1[256];
+
+ snprintf(buf1, sizeof(buf1), "Content-type: image/jpeg\n\n");
+ put_buffer(&s->pb, buf1, strlen(buf1));
+ put_buffer(&s->pb, buf, size);
+
+ snprintf(buf1, sizeof(buf1), "\n--%s\n", 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;
+}
+
+static AVOutputFormat mpjpeg_format = {
+ "mpjpeg",
+ "Mime multipart JPEG format",
+ "multipart/x-mixed-replace;boundary=" BOUNDARY_TAG,
+ "mjpg",
+ 0,
+ CODEC_ID_NONE,
+ CODEC_ID_MJPEG,
+ mpjpeg_write_header,
+ mpjpeg_write_packet,
+ mpjpeg_write_trailer,
+};
+
+
+/*************************************/
+/* single frame JPEG */
+
+static int single_jpeg_write_header(AVFormatContext *s)
+{
+ return 0;
+}
+
+static int single_jpeg_write_packet(AVFormatContext *s, int stream_index,
+ UINT8 *buf, int size, int force_pts)
+{
+ put_buffer(&s->pb, buf, size);
+ put_flush_packet(&s->pb);
+ return 1; /* no more data can be sent */
+}
+
+static int single_jpeg_write_trailer(AVFormatContext *s)
+{
+ return 0;
+}
+
+static AVOutputFormat single_jpeg_format = {
+ "singlejpeg",
+ "single JPEG image",
+ "image/jpeg",
+ NULL, /* note: no extension to favorize jpeg multiple images match */
+ 0,
+ CODEC_ID_NONE,
+ CODEC_ID_MJPEG,
+ single_jpeg_write_header,
+ single_jpeg_write_packet,
+ single_jpeg_write_trailer,
+};
+
+int jpeg_init(void)
+{
+ av_register_output_format(&mpjpeg_format);
+ av_register_output_format(&single_jpeg_format);
+ return 0;
+}