From 245deeadd81afc4ec5635b65d71646490c5c19fd Mon Sep 17 00:00:00 2001
From: Paul Brossier <piem@piem.org>
Date: Wed, 27 Dec 2023 18:09:23 +0100
Subject: [PATCH] [source_avcodec] drop support for libavresample

---
 src/io/source_avcodec.c | 53 +----------------------------------------
 1 file changed, 1 insertion(+), 52 deletions(-)

diff --git a/src/io/source_avcodec.c b/src/io/source_avcodec.c
index 1421bd9a..011c3d78 100644
--- a/src/io/source_avcodec.c
+++ b/src/io/source_avcodec.c
@@ -24,11 +24,7 @@
 
 #include <libavcodec/avcodec.h>
 #include <libavformat/avformat.h>
-#if defined(HAVE_SWRESAMPLE)
 #include <libswresample/swresample.h>
-#elif defined(HAVE_AVRESAMPLE)
-#include <libavresample/avresample.h>
-#endif
 #include <libavutil/opt.h>
 
 // determine whether we use libavformat from ffmpeg or from libav
@@ -91,11 +87,7 @@ struct _aubio_source_avcodec_t {
 #else
   AVPacket avPacket;
 #endif
-#ifdef HAVE_AVRESAMPLE
-  AVAudioResampleContext *avr;
-#elif defined(HAVE_SWRESAMPLE)
   SwrContext *avr;
-#endif
   smpl_t *output;
   uint_t read_samples;
   uint_t read_index;
@@ -336,13 +328,9 @@ void aubio_source_avcodec_reset_resampler(aubio_source_avcodec_t * s)
   // create or reset resampler to/from mono/multi-channel
   if ( s->avr == NULL ) {
     int err;
+    SwrContext *avr = swr_alloc();
     int64_t input_layout = av_get_default_channel_layout(s->input_channels);
     int64_t output_layout = av_get_default_channel_layout(s->input_channels);
-#ifdef HAVE_AVRESAMPLE
-    AVAudioResampleContext *avr = avresample_alloc_context();
-#elif defined(HAVE_SWRESAMPLE)
-    SwrContext *avr = swr_alloc();
-#endif /* HAVE_AVRESAMPLE || HAVE_SWRESAMPLE */
 
     av_opt_set_int(avr, "in_channel_layout",  input_layout,              0);
     av_opt_set_int(avr, "out_channel_layout", output_layout,             0);
@@ -356,11 +344,7 @@ void aubio_source_avcodec_reset_resampler(aubio_source_avcodec_t * s)
 #endif
     // TODO: use planar?
     //av_opt_set_int(avr, "out_sample_fmt",     AV_SAMPLE_FMT_FLTP,      0);
-#ifdef HAVE_AVRESAMPLE
-    if ( ( err = avresample_open(avr) ) < 0)
-#elif defined(HAVE_SWRESAMPLE)
     if ( ( err = swr_init(avr) ) < 0)
-#endif /* HAVE_AVRESAMPLE || HAVE_SWRESAMPLE */
     {
       char errorstr[256];
       av_strerror (err, errorstr, sizeof(errorstr));
@@ -383,23 +367,11 @@ void aubio_source_avcodec_readframe(aubio_source_avcodec_t *s,
 #else
   AVPacket *avPacket = &s->avPacket;
 #endif
-#ifdef HAVE_AVRESAMPLE
-  AVAudioResampleContext *avr = s->avr;
-#elif defined(HAVE_SWRESAMPLE)
   SwrContext *avr = s->avr;
-#endif /* HAVE_AVRESAMPLE || HAVE_SWRESAMPLE */
   int got_frame = 0;
-#ifdef HAVE_AVRESAMPLE
-  int in_linesize = 0;
-  int in_samples = avFrame->nb_samples;
-  int out_linesize = 0;
-  int max_out_samples = AUBIO_AVCODEC_MAX_BUFFER_SIZE;
-  int out_samples = 0;
-#elif defined(HAVE_SWRESAMPLE)
   int in_samples = avFrame->nb_samples;
   int max_out_samples = AUBIO_AVCODEC_MAX_BUFFER_SIZE / avCodecCtx->channels;
   int out_samples = 0;
-#endif /* HAVE_AVRESAMPLE || HAVE_SWRESAMPLE */
   smpl_t *output = s->output;
 #ifndef FF_API_LAVF_AVCTX
   int len = 0;
@@ -476,23 +448,11 @@ void aubio_source_avcodec_readframe(aubio_source_avcodec_t *s,
 #warning "avutil < 53 is deprecated, crashes might occur on corrupt files"
 #endif
 
-#ifdef HAVE_AVRESAMPLE
-  in_linesize = 0;
-  av_samples_get_buffer_size(&in_linesize, avCodecCtx->channels,
-      avFrame->nb_samples, avCodecCtx->sample_fmt, 1);
-  in_samples = avFrame->nb_samples;
-  out_linesize = 0;
-  max_out_samples = AUBIO_AVCODEC_MAX_BUFFER_SIZE;
-  out_samples = avresample_convert ( avr,
-        (uint8_t **)&output, out_linesize, max_out_samples,
-        (uint8_t **)avFrame->data, in_linesize, in_samples);
-#elif defined(HAVE_SWRESAMPLE)
   in_samples = avFrame->nb_samples;
   max_out_samples = AUBIO_AVCODEC_MAX_BUFFER_SIZE / avCodecCtx->channels;
   out_samples = swr_convert( avr,
       (uint8_t **)&output, max_out_samples,
       (const uint8_t **)avFrame->data, in_samples);
-#endif /* HAVE_AVRESAMPLE || HAVE_SWRESAMPLE */
   if (out_samples < 0) {
     AUBIO_WRN("source_avcodec: error while resampling %s (%d)\n",
         s->path, out_samples);
@@ -626,14 +586,8 @@ uint_t aubio_source_avcodec_seek (aubio_source_avcodec_t * s, uint_t pos) {
   s->eof = 0;
   s->read_index = 0;
   s->read_samples = 0;
-#ifdef HAVE_AVRESAMPLE
-  // reset the AVAudioResampleContext
-  avresample_close(s->avr);
-  avresample_open(s->avr);
-#elif defined(HAVE_SWRESAMPLE)
   swr_close(s->avr);
   swr_init(s->avr);
-#endif
   return ret;
 }
 
@@ -647,13 +601,8 @@ uint_t aubio_source_avcodec_get_duration (aubio_source_avcodec_t * s) {
 
 uint_t aubio_source_avcodec_close(aubio_source_avcodec_t * s) {
   if (s->avr != NULL) {
-#ifdef HAVE_AVRESAMPLE
-    avresample_close( s->avr );
-    av_free ( s->avr );
-#elif defined(HAVE_SWRESAMPLE)
     swr_close ( s->avr );
     swr_free ( &s->avr );
-#endif
   }
   s->avr = NULL;
   if (s->avCodecCtx != NULL) {