/*
- * copyright (c) 2001 Fabrice Bellard
+ * Copyright (c) 2001 Fabrice Bellard
*
- * This file is part of Libav.
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
*
- * Libav 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 2.1 of the License, or (at your option) any later version.
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
*
- * Libav 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 Libav; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
*/
/**
* @file
* libavcodec API use example.
*
- * @example libavcodec/api-example.c
- * Note that this library only handles codecs (mpeg, mpeg4, etc...),
- * not file formats (avi, vob, etc...). See library 'libavformat' for the
+ * Note that libavcodec only handles codecs (mpeg, mpeg4, etc...),
+ * not file formats (avi, vob, mp4, mov, mkv, mxf, flv, mpegts, mpegps, etc...). See library 'libavformat' for the
* format handling
*/
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-
-#ifdef HAVE_AV_CONFIG_H
-#undef HAVE_AV_CONFIG_H
-#endif
+#include <math.h>
-#include "libavcodec/avcodec.h"
-#include "libavutil/audioconvert.h"
-#include "libavutil/imgutils.h"
-#include "libavutil/mathematics.h"
-#include "libavutil/samplefmt.h"
+#include <libavutil/opt.h>
+#include <libavcodec/avcodec.h>
+#include <libavutil/audioconvert.h>
+#include <libavutil/imgutils.h>
+#include <libavutil/mathematics.h>
+#include <libavutil/samplefmt.h>
#define INBUF_SIZE 4096
#define AUDIO_INBUF_SIZE 20480
uint16_t *samples;
float t, tincr;
- printf("Audio encoding\n");
+ printf("Encode audio file %s\n", filename);
/* find the MP2 encoder */
codec = avcodec_find_encoder(AV_CODEC_ID_MP2);
av_init_packet(&avpkt);
- printf("Audio decoding\n");
+ printf("Decode audio file %s\n", filename);
/* find the mpeg audio decoder */
codec = avcodec_find_decoder(AV_CODEC_ID_MP2);
}
avpkt.size -= len;
avpkt.data += len;
+ avpkt.dts =
+ avpkt.pts = AV_NOPTS_VALUE;
if (avpkt.size < AUDIO_REFILL_THRESH) {
/* Refill the input buffer, to avoid trying to decode
* incomplete frames. Instead of this, one could also use
/*
* Video encoding example
*/
-static void video_encode_example(const char *filename)
+static void video_encode_example(const char *filename, int codec_id)
{
AVCodec *codec;
AVCodecContext *c= NULL;
AVPacket pkt;
uint8_t endcode[] = { 0, 0, 1, 0xb7 };
- printf("Video encoding\n");
+ printf("Encode video file %s\n", filename);
/* find the mpeg1 video encoder */
- codec = avcodec_find_encoder(AV_CODEC_ID_MPEG1VIDEO);
+ codec = avcodec_find_encoder(codec_id);
if (!codec) {
fprintf(stderr, "codec not found\n");
exit(1);
c->max_b_frames=1;
c->pix_fmt = PIX_FMT_YUV420P;
+ if(codec_id == AV_CODEC_ID_H264)
+ av_opt_set(c->priv_data, "preset", "slow", 0);
+
/* open it */
if (avcodec_open2(c, codec, NULL) < 0) {
fprintf(stderr, "could not open codec\n");
exit(1);
}
+ /* the image can be allocated by any means and av_image_alloc() is
+ * just the most convenient way if av_malloc() is to be used */
ret = av_image_alloc(picture->data, picture->linesize, c->width, c->height,
c->pix_fmt, 32);
if (ret < 0) {
fprintf(stderr, "could not alloc raw picture buffer\n");
exit(1);
}
+
picture->format = c->pix_fmt;
picture->width = c->width;
picture->height = c->height;
}
if (got_output) {
- printf("encoding frame %3d (size=%5d)\n", i, pkt.size);
+ printf("write frame %3d (size=%5d)\n", i, pkt.size);
fwrite(pkt.data, 1, pkt.size, f);
av_free_packet(&pkt);
}
/* set end of buffer to 0 (this ensures that no overreading happens for damaged mpeg streams) */
memset(inbuf + INBUF_SIZE, 0, FF_INPUT_BUFFER_PADDING_SIZE);
- printf("Video decoding\n");
+ printf("Decode video file %s\n", filename);
/* find the mpeg1 video decoder */
codec = avcodec_find_decoder(AV_CODEC_ID_MPEG1VIDEO);
audio_encode_example("/tmp/test.mp2");
audio_decode_example("/tmp/test.sw", "/tmp/test.mp2");
- video_encode_example("/tmp/test.mpg");
+ video_encode_example("/tmp/test.h264", AV_CODEC_ID_H264);
+ video_encode_example("/tmp/test.mpg", AV_CODEC_ID_MPEG1VIDEO);
filename = "/tmp/test.mpg";
} else {
filename = argv[1];
projects / ffmpeg / blobdiff