doc/examples/transcode_aac: replace local get_error_text with av_err2str

doc/examples/transcode_aac.c

@@ -45,18 +45,6 @@
 /** The number of output channels */
 #define OUTPUT_CHANNELS 2
 
-/**
- * Convert an error code into a text message.
- * @param error Error code to be converted
- * @return Corresponding error text (not thread-safe)
- */
-static const char *get_error_text(const int error)
-{
-    static char error_buffer[255];
-    av_strerror(error, error_buffer, sizeof(error_buffer));
-    return error_buffer;
-}
-
 /** Open an input file and the required decoder. */
 static int open_input_file(const char *filename,
                            AVFormatContext **input_format_context,
@@ -70,7 +58,7 @@ static int open_input_file(const char *filename,
     if ((error = avformat_open_input(input_format_context, filename, NULL,
                                      NULL)) < 0) {
         fprintf(stderr, "Could not open input file '%s' (error '%s')\n",
-                filename, get_error_text(error));
+                filename, av_err2str(error));
         *input_format_context = NULL;
         return error;
     }
@@ -78,7 +66,7 @@ static int open_input_file(const char *filename,
     /** Get information on the input file (number of streams etc.). */
     if ((error = avformat_find_stream_info(*input_format_context, NULL)) < 0) {
         fprintf(stderr, "Could not open find stream info (error '%s')\n",
-                get_error_text(error));
+                av_err2str(error));
         avformat_close_input(input_format_context);
         return error;
     }
@@ -117,7 +105,7 @@ static int open_input_file(const char *filename,
     /** Open the decoder for the audio stream to use it later. */
     if ((error = avcodec_open2(avctx, input_codec, NULL)) < 0) {
         fprintf(stderr, "Could not open input codec (error '%s')\n",
-                get_error_text(error));
+                av_err2str(error));
         avcodec_free_context(&avctx);
         avformat_close_input(input_format_context);
         return error;
@@ -149,7 +137,7 @@ static int open_output_file(const char *filename,
     if ((error = avio_open(&output_io_context, filename,
                            AVIO_FLAG_WRITE)) < 0) {
         fprintf(stderr, "Could not open output file '%s' (error '%s')\n",
-                filename, get_error_text(error));
+                filename, av_err2str(error));
         return error;
     }
 
@@ -219,7 +207,7 @@ static int open_output_file(const char *filename,
     /** Open the encoder for the audio stream to use it later. */
     if ((error = avcodec_open2(avctx, output_codec, NULL)) < 0) {
         fprintf(stderr, "Could not open output codec (error '%s')\n",
-                get_error_text(error));
+                av_err2str(error));
         goto cleanup;
     }
 
@@ -325,7 +313,7 @@ static int write_output_file_header(AVFormatContext *output_format_context)
     int error;
     if ((error = avformat_write_header(output_format_context, NULL)) < 0) {
         fprintf(stderr, "Could not write output file header (error '%s')\n",
-                get_error_text(error));
+                av_err2str(error));
         return error;
     }
     return 0;
@@ -349,7 +337,7 @@ static int decode_audio_frame(AVFrame *frame,
             *finished = 1;
         else {
             fprintf(stderr, "Could not read frame (error '%s')\n",
-                    get_error_text(error));
+                    av_err2str(error));
             return error;
         }
     }
@@ -363,7 +351,7 @@ static int decode_audio_frame(AVFrame *frame,
     if ((error = avcodec_decode_audio4(input_codec_context, frame,
                                        data_present, &input_packet)) < 0) {
         fprintf(stderr, "Could not decode frame (error '%s')\n",
-                get_error_text(error));
+                av_err2str(error));
         av_packet_unref(&input_packet);
         return error;
     }
@@ -410,7 +398,7 @@ static int init_converted_samples(uint8_t ***converted_input_samples,
                                   output_codec_context->sample_fmt, 0)) < 0) {
         fprintf(stderr,
                 "Could not allocate converted input samples (error '%s')\n",
-                get_error_text(error));
+                av_err2str(error));
         av_freep(&(*converted_input_samples)[0]);
         free(*converted_input_samples);
         return error;
@@ -434,7 +422,7 @@ static int convert_samples(const uint8_t **input_data,
                              converted_data, frame_size,
                              input_data    , frame_size)) < 0) {
         fprintf(stderr, "Could not convert input samples (error '%s')\n",
-                get_error_text(error));
+                av_err2str(error));
         return error;
     }
 
@@ -567,7 +555,7 @@ static int init_output_frame(AVFrame **frame,
      */
     if ((error = av_frame_get_buffer(*frame, 0)) < 0) {
         fprintf(stderr, "Could not allocate output frame samples (error '%s')\n",
-                get_error_text(error));
+                av_err2str(error));
         av_frame_free(frame);
         return error;
     }
@@ -602,7 +590,7 @@ static int encode_audio_frame(AVFrame *frame,
     if ((error = avcodec_encode_audio2(output_codec_context, &output_packet,
                                        frame, data_present)) < 0) {
         fprintf(stderr, "Could not encode frame (error '%s')\n",
-                get_error_text(error));
+                av_err2str(error));
         av_packet_unref(&output_packet);
         return error;
     }
@@ -611,7 +599,7 @@ static int encode_audio_frame(AVFrame *frame,
     if (*data_present) {
         if ((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));
             av_packet_unref(&output_packet);
             return error;
         }
@@ -671,7 +659,7 @@ static int write_output_file_trailer(AVFormatContext *output_format_context)
     int error;
     if ((error = av_write_trailer(output_format_context)) < 0) {
         fprintf(stderr, "Could not write output file trailer (error '%s')\n",
-                get_error_text(error));
+                av_err2str(error));
         return error;
     }
     return 0;