rtpenc: Expose the max packet size via an avoption

[ffmpeg] / libavformat / output-example.c

diff --git a/libavformat/output-example.c b/libavformat/output-example.c
index ac7db48284f210e3fb88ae63702e47a13f221bda..50290aa264a61f16ed7ffcce89f40518fe91568d 100644 (file)
--- a/libavformat/output-example.c
+++ b/libavformat/output-example.c
@@ -1,7 +1,4 @@
 /*
- * Libavformat API example: Output a media file in any supported
- * libavformat format. The default codecs are used.
- *
  * Copyright (c) 2003 Fabrice Bellard
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
@@ -22,15 +19,22 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */
+
+/**
+ * @file
+ * libavformat API example.
+ *
+ * @example libavformat/output-example.c
+ * Output a media file in any supported libavformat format.
+ * The default codecs are used.
+ */
+
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
 #include <math.h>
 
-#ifndef M_PI
-#define M_PI 3.14159265358979323846
-#endif
-
+#include "libavutil/mathematics.h"
 #include "libavformat/avformat.h"
 #include "libswscale/swscale.h"
 
@@ -47,11 +51,11 @@ static int sws_flags = SWS_BICUBIC;
 /**************************************************************/
 /* audio output */
 
-float t, tincr, tincr2;
-int16_t *samples;
-uint8_t *audio_outbuf;
-int audio_outbuf_size;
-int audio_input_frame_size;
+static float t, tincr, tincr2;
+static int16_t *samples;
+static uint8_t *audio_outbuf;
+static int audio_outbuf_size;
+static int audio_input_frame_size;
 
 /*
  * add an audio output stream
@@ -61,7 +65,7 @@ static AVStream *add_audio_stream(AVFormatContext *oc, enum CodecID codec_id)
     AVCodecContext *c;
     AVStream *st;
 
-    st = av_new_stream(oc, 1);
+    st = avformat_new_stream(oc, NULL);
     if (!st) {
         fprintf(stderr, "Could not alloc stream\n");
         exit(1);
@@ -69,9 +73,10 @@ static AVStream *add_audio_stream(AVFormatContext *oc, enum CodecID codec_id)
 
     c = st->codec;
     c->codec_id = codec_id;
-    c->codec_type = CODEC_TYPE_AUDIO;
+    c->codec_type = AVMEDIA_TYPE_AUDIO;
 
     /* put sample parameters */
+    c->sample_fmt = AV_SAMPLE_FMT_S16;
     c->bit_rate = 64000;
     c->sample_rate = 44100;
     c->channels = 2;
@@ -98,7 +103,7 @@ static void open_audio(AVFormatContext *oc, AVStream *st)
     }
 
     /* open it */
-    if (avcodec_open(c, codec) < 0) {
+    if (avcodec_open2(c, codec, NULL) < 0) {
         fprintf(stderr, "could not open codec\n");
         exit(1);
     }
@@ -159,11 +164,11 @@ static void write_audio_frame(AVFormatContext *oc, AVStream *st)
 
     get_audio_frame(samples, audio_input_frame_size, c->channels);
 
-    pkt.size= avcodec_encode_audio(c, audio_outbuf, audio_outbuf_size, samples);
+    pkt.size = avcodec_encode_audio2(c, audio_outbuf, audio_outbuf_size, samples);
 
     if (c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE)
         pkt.pts= av_rescale_q(c->coded_frame->pts, c->time_base, st->time_base);
-    pkt.flags |= PKT_FLAG_KEY;
+    pkt.flags |= AV_PKT_FLAG_KEY;
     pkt.stream_index= st->index;
     pkt.data= audio_outbuf;
 
@@ -185,9 +190,9 @@ static void close_audio(AVFormatContext *oc, AVStream *st)
 /**************************************************************/
 /* video output */
 
-AVFrame *picture, *tmp_picture;
-uint8_t *video_outbuf;
-int frame_count, video_outbuf_size;
+static AVFrame *picture, *tmp_picture;
+static uint8_t *video_outbuf;
+static int frame_count, video_outbuf_size;
 
 /* add a video output stream */
 static AVStream *add_video_stream(AVFormatContext *oc, enum CodecID codec_id)
@@ -195,7 +200,7 @@ static AVStream *add_video_stream(AVFormatContext *oc, enum CodecID codec_id)
     AVCodecContext *c;
     AVStream *st;
 
-    st = av_new_stream(oc, 0);
+    st = avformat_new_stream(oc, NULL);
     if (!st) {
         fprintf(stderr, "Could not alloc stream\n");
         exit(1);
@@ -203,7 +208,7 @@ static AVStream *add_video_stream(AVFormatContext *oc, enum CodecID codec_id)
 
     c = st->codec;
     c->codec_id = codec_id;
-    c->codec_type = CODEC_TYPE_VIDEO;
+    c->codec_type = AVMEDIA_TYPE_VIDEO;
 
     /* put sample parameters */
     c->bit_rate = 400000;
@@ -270,7 +275,7 @@ static void open_video(AVFormatContext *oc, AVStream *st)
     }
 
     /* open the codec */
-    if (avcodec_open(c, codec) < 0) {
+    if (avcodec_open2(c, codec, NULL) < 0) {
         fprintf(stderr, "could not open codec\n");
         exit(1);
     }
@@ -372,7 +377,7 @@ static void write_video_frame(AVFormatContext *oc, AVStream *st)
         AVPacket pkt;
         av_init_packet(&pkt);
 
-        pkt.flags |= PKT_FLAG_KEY;
+        pkt.flags |= AV_PKT_FLAG_KEY;
         pkt.stream_index= st->index;
         pkt.data= (uint8_t *)picture;
         pkt.size= sizeof(AVPicture);
@@ -389,7 +394,7 @@ static void write_video_frame(AVFormatContext *oc, AVStream *st)
             if (c->coded_frame->pts != AV_NOPTS_VALUE)
                 pkt.pts= av_rescale_q(c->coded_frame->pts, c->time_base, st->time_base);
             if(c->coded_frame->key_frame)
-                pkt.flags |= PKT_FLAG_KEY;
+                pkt.flags |= AV_PKT_FLAG_KEY;
             pkt.stream_index= st->index;
             pkt.data= video_outbuf;
             pkt.size= out_size;
@@ -440,7 +445,7 @@ int main(int argc, char **argv)
                "The output format is automatically guessed according to the file extension.\n"
                "Raw images can also be output by using '%%d' in the filename\n"
                "\n", argv[0]);
-        exit(1);
+        return 1;
     }
 
     filename = argv[1];
@@ -454,14 +459,14 @@ int main(int argc, char **argv)
     }
     if (!fmt) {
         fprintf(stderr, "Could not find suitable output format\n");
-        exit(1);
+        return 1;
     }
 
     /* allocate the output media context */
     oc = avformat_alloc_context();
     if (!oc) {
         fprintf(stderr, "Memory error\n");
-        exit(1);
+        return 1;
     }
     oc->oformat = fmt;
     snprintf(oc->filename, sizeof(oc->filename), "%s", filename);
@@ -477,14 +482,7 @@ int main(int argc, char **argv)
         audio_st = add_audio_stream(oc, fmt->audio_codec);
     }
 
-    /* set the output parameters (must be done even if no
-       parameters). */
-    if (av_set_parameters(oc, NULL) < 0) {
-        fprintf(stderr, "Invalid output format parameters\n");
-        exit(1);
-    }
-
-    dump_format(oc, 0, filename, 1);
+    av_dump_format(oc, 0, filename, 1);
 
     /* now that all the parameters are set, we can open the audio and
        video codecs and allocate the necessary encode buffers */
@@ -495,14 +493,14 @@ int main(int argc, char **argv)
 
     /* open the output file, if needed */
     if (!(fmt->flags & AVFMT_NOFILE)) {
-        if (url_fopen(&oc->pb, filename, URL_WRONLY) < 0) {
+        if (avio_open(&oc->pb, filename, AVIO_FLAG_WRITE) < 0) {
             fprintf(stderr, "Could not open '%s'\n", filename);
-            exit(1);
+            return 1;
         }
     }
 
     /* write the stream header, if any */
-    av_write_header(oc);
+    avformat_write_header(oc, NULL);
 
     for(;;) {
         /* compute current audio and video time */
@@ -548,7 +546,7 @@ int main(int argc, char **argv)
 
     if (!(fmt->flags & AVFMT_NOFILE)) {
         /* close the output file */
-        url_fclose(oc->pb);
+        avio_close(oc->pb);
     }
 
     /* free the stream */