Merge commit '0711d142997b2662ba9198e607015b06c6eed0d8'

* commit '0711d142997b2662ba9198e607015b06c6eed0d8':
  examples: Use new API for transcoding example

Merged-by: James Almer <jamrial@gmail.com>

diff --cc doc/examples/transcode_aac.c
index b19349573ac59d07553ba7ead018b5c64b711e1f,ec557768578b14924c0e8178eaa262982c3617d6..e0c76f5b35becb831be525f446a6e02e014be3b0
--- 1/doc/examples/transcode_aac.c
--- 2/doc/examples/transcode_aac.c
+++ b/doc/examples/transcode_aac.c
@@@ -1,9 -1,9 +1,9 @@@
  /*
-  * Copyright (c) 2013-2017 Andreas Unterweger
+  * Copyright (c) 2013-2018 Andreas Unterweger
   *
 - * This file is part of Libav.
 + * This file is part of FFmpeg.
   *
 - * Libav is free software; you can redistribute it and/or
 + * FFmpeg 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.
@@@ -387,24 -398,39 +387,39 @@@ static int decode_audio_frame(AVFrame *
          }
      }
  
-     /* Decode the audio frame stored in the temporary packet.
-      * The input audio stream decoder is used to do this.
-      * If we are at the end of the file, pass an empty packet to the decoder
-      * to flush it. */
-     if ((error = avcodec_decode_audio4(input_codec_context, frame,
-                                        data_present, &input_packet)) < 0) {
-         fprintf(stderr, "Could not decode frame (error '%s')\n",
+     /* Send the audio frame stored in the temporary packet to the decoder.
+      * The input audio stream decoder is used to do this. */
+     if ((error = avcodec_send_packet(input_codec_context, &input_packet)) < 0) {
+         fprintf(stderr, "Could not send packet for decoding (error '%s')\n",
 -                get_error_text(error));
 +                av_err2str(error));
-         av_packet_unref(&input_packet);
          return error;
      }
  
-     /* If the decoder has not been flushed completely, we are not finished,
-      * so that this function has to be called again. */
-     if (*finished && *data_present)
-         *finished = 0;
+     /* Receive one frame from the decoder. */
+     error = avcodec_receive_frame(input_codec_context, frame);
+     /* If the decoder asks for more data to be able to decode a frame,
+      * return indicating that no data is present. */
+     if (error == AVERROR(EAGAIN)) {
+         error = 0;
+         goto cleanup;
+     /* If the end of the input file is reached, stop decoding. */
+     } else if (error == AVERROR_EOF) {
+         *finished = 1;
+         error = 0;
+         goto cleanup;
+     } else if (error < 0) {
+         fprintf(stderr, "Could not decode frame (error '%s')\n",
 -                get_error_text(error));
++                av_err2str(error));
+         goto cleanup;
+     /* Default case: Return decoded data. */
+     } else {
+         *data_present = 1;
+         goto cleanup;
+     }
+ 
+ cleanup:
      av_packet_unref(&input_packet);
-     return 0;
+     return error;
  }
  
  /**
@@@ -656,29 -689,50 +671,50 @@@ static int encode_audio_frame(AVFrame *
          pts += frame->nb_samples;
      }
  
-     /* Encode the audio frame and store it in the temporary packet.
+     /* Send the audio frame stored in the temporary packet to the encoder.
       * The output audio stream encoder is used to do this. */
-     if ((error = avcodec_encode_audio2(output_codec_context, &output_packet,
-                                        frame, data_present)) < 0) {
-         fprintf(stderr, "Could not encode frame (error '%s')\n",
+     error = avcodec_send_frame(output_codec_context, frame);
+     /* The encoder signals that it has nothing more to encode. */
+     if (error == AVERROR_EOF) {
+         error = 0;
+         goto cleanup;
+     } else if (error < 0) {
+         fprintf(stderr, "Could not send packet for encoding (error '%s')\n",
 -                get_error_text(error));
 +                av_err2str(error));
-         av_packet_unref(&output_packet);
          return error;
      }
  
-     /* Write one audio frame from the temporary packet to the output file. */
-     if (*data_present) {
-         if ((error = av_write_frame(output_format_context, &output_packet)) < 0) {
-             fprintf(stderr, "Could not write frame (error '%s')\n",
-                     av_err2str(error));
-             av_packet_unref(&output_packet);
-             return error;
-         }
+     /* Receive one encoded frame from the encoder. */
+     error = avcodec_receive_packet(output_codec_context, &output_packet);
+     /* If the encoder asks for more data to be able to provide an
+      * encoded frame, return indicating that no data is present. */
+     if (error == AVERROR(EAGAIN)) {
+         error = 0;
+         goto cleanup;
+     /* If the last frame has been encoded, stop encoding. */
+     } else if (error == AVERROR_EOF) {
+         error = 0;
+         goto cleanup;
+     } else if (error < 0) {
+         fprintf(stderr, "Could not encode frame (error '%s')\n",
 -                get_error_text(error));
++                av_err2str(error));
+         goto cleanup;
+     /* Default case: Return encoded data. */
+     } else {
+         *data_present = 1;
+     }
  
-         av_packet_unref(&output_packet);
+     /* Write one audio frame from the temporary packet to the output file. */
+     if (*data_present &&
+         (error = av_write_frame(output_format_context, &output_packet)) < 0) {
+         fprintf(stderr, "Could not write frame (error '%s')\n",
 -                get_error_text(error));
++                av_err2str(error));
+         goto cleanup;
      }
  
-     return 0;
+ cleanup:
+     av_packet_unref(&output_packet);
+     return error;
  }
  
  /**