Problems with ffmpeg4.4

[waarmond]

I'm happily using chromaprint as a depency of essentia for a long time. Since FFmpeg has become too modern I'm compiling against a separate ffmpeg4.4 with such a patch:

--- a/cmake/modules/FindFFmpeg.cmake	2021-12-23 06:57:54.000000000 +0100
+++ b/cmake/modules/FindFFmpeg.cmake	2024-03-10 22:26:24.794686739 +0100
@@ -39,7 +39,7 @@
 		/opt/include
 		/usr/freeware/include
 		NO_DEFAULT_PATH
-		PATH_SUFFIXES ffmpeg
+		PATH_SUFFIXES ffmpeg ffmpeg4.4
 		DOC "Location of FFMPEG Headers"
 	)
 	FIND_PATH(FFMPEG_${varname}_INCLUDE_DIRS lib${shortname}/${headername}
@@ -93,7 +93,7 @@
     /opt/csw/include # Blastwave
     /opt/include
     /usr/freeware/include
-    PATH_SUFFIXES ffmpeg
+    PATH_SUFFIXES ffmpeg ffmpeg4.4
     DOC "Location of FFMPEG stdint.h Header"
 )

Now I'm on a new system and have to recompile everything and the compilation of fpcalc fails:

[ 95%] Building CXX object src/cmd/CMakeFiles/fpcalc.dir/fpcalc.cpp.o
In file included from ./src/audio/ffmpeg_audio_reader.h:24,
                 from ./src/cmd/fpcalc.cpp:7:
./src/audio/ffmpeg_audio_processor.h:14:2: error: #error "no audio processing library"
   14 | #error "no audio processing library"
      |  ^~~~~
./src/audio/ffmpeg_audio_reader.h:73:25: error: 'FFmpegAudioProcessor' was not declared in this scope; did you mean 'FFmpegAudioReader'?
   73 |         std::unique_ptr<FFmpegAudioProcessor> m_converter;
      |                         ^~~~~~~~~~~~~~~~~~~~
      |                         FFmpegAudioReader
./src/audio/ffmpeg_audio_reader.h:73:45: error: template argument 1 is invalid
   73 |         std::unique_ptr<FFmpegAudioProcessor> m_converter;
      |                                             ^
./src/audio/ffmpeg_audio_reader.h:73:45: error: template argument 2 is invalid
./src/audio/ffmpeg_audio_reader.h: In member function 'bool chromaprint::FFmpegAudioReader::Open(const std::string&)':
./src/audio/ffmpeg_audio_reader.h:182:9: error: 'AVChannelLayout' was not declared in this scope
  182 |         AVChannelLayout output_channel_layout;
      |         ^~~~~~~~~~~~~~~
./src/audio/ffmpeg_audio_reader.h:184:44: error: 'output_channel_layout' was not declared in this scope; did you mean 'av_get_channel_layout'?
  184 |                 av_channel_layout_default(&output_channel_layout, m_output_channels);
      |                                            ^~~~~~~~~~~~~~~~~~~~~
      |                                            av_get_channel_layout
./src/audio/ffmpeg_audio_reader.h:184:17: error: 'av_channel_layout_default' was not declared in this scope
  184 |                 av_channel_layout_default(&output_channel_layout, m_output_channels);
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~
./src/audio/ffmpeg_audio_reader.h:186:50: error: 'AVCodecContext' {aka 'struct AVCodecContext'} has no member named 'ch_layout'; did you mean 'channel_layout'?
  186 |                 m_output_channels = m_codec_ctx->ch_layout.nb_channels;
      |                                                  ^~~~~~~~~
      |                                                  channel_layout
./src/audio/ffmpeg_audio_reader.h:187:44: error: 'output_channel_layout' was not declared in this scope; did you mean 'av_get_channel_layout'?
  187 |                 av_channel_layout_default(&output_channel_layout, m_output_channels);
      |                                            ^~~~~~~~~~~~~~~~~~~~~
      |                                            av_get_channel_layout
./src/audio/ffmpeg_audio_reader.h:187:17: error: 'av_channel_layout_default' was not declared in this scope
  187 |                 av_channel_layout_default(&output_channel_layout, m_output_channels);
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~
./src/audio/ffmpeg_audio_reader.h:190:74: error: 'AVCodecContext' {aka 'struct AVCodecContext'} has no member named 'ch_layout'; did you mean 'channel_layout'?
  190 |         if (m_codec_ctx->sample_fmt != AV_SAMPLE_FMT_S16 || m_codec_ctx->ch_layout.nb_channels != m_output_channels || m_codec_ctx->sample_rate != m_output_sample_rate) {
      |                                                                          ^~~~~~~~~
      |                                                                          channel_layout
./src/audio/ffmpeg_audio_reader.h:191:29: error: request for member 'reset' in '((chromaprint::FFmpegAudioReader*)this)->chromaprint::FFmpegAudioReader::m_converter', which is of non-class type 'int'
  191 |                 m_converter.reset(new FFmpegAudioProcessor());
      |                             ^~~~~
./src/audio/ffmpeg_audio_reader.h:191:39: error: expected type-specifier before 'FFmpegAudioProcessor'
  191 |                 m_converter.reset(new FFmpegAudioProcessor());
      |                                       ^~~~~~~~~~~~~~~~~~~~
./src/audio/ffmpeg_audio_reader.h:192:28: error: base operand of '->' is not a pointer
  192 |                 m_converter->SetCompatibleMode();
      |                            ^~
./src/audio/ffmpeg_audio_reader.h:193:28: error: base operand of '->' is not a pointer
  193 |                 m_converter->SetInputSampleFormat(m_codec_ctx->sample_fmt);
      |                            ^~
./src/audio/ffmpeg_audio_reader.h:194:28: error: base operand of '->' is not a pointer
  194 |                 m_converter->SetInputSampleRate(m_codec_ctx->sample_rate);
      |                            ^~
./src/audio/ffmpeg_audio_reader.h:195:28: error: base operand of '->' is not a pointer
  195 |                 m_converter->SetInputChannelLayout(&(m_codec_ctx->ch_layout));
      |                            ^~
./src/audio/ffmpeg_audio_reader.h:195:67: error: 'AVCodecContext' {aka 'struct AVCodecContext'} has no member named 'ch_layout'; did you mean 'channel_layout'?
  195 |                 m_converter->SetInputChannelLayout(&(m_codec_ctx->ch_layout));
      |                                                                   ^~~~~~~~~
      |                                                                   channel_layout
./src/audio/ffmpeg_audio_reader.h:196:28: error: base operand of '->' is not a pointer
  196 |                 m_converter->SetOutputSampleFormat(AV_SAMPLE_FMT_S16);
      |                            ^~
./src/audio/ffmpeg_audio_reader.h:197:28: error: base operand of '->' is not a pointer
  197 |                 m_converter->SetOutputSampleRate(m_output_sample_rate);
      |                            ^~
./src/audio/ffmpeg_audio_reader.h:198:28: error: base operand of '->' is not a pointer
  198 |                 m_converter->SetOutputChannelLayout(&output_channel_layout);
      |                            ^~
./src/audio/ffmpeg_audio_reader.h:198:54: error: 'output_channel_layout' was not declared in this scope; did you mean 'av_get_channel_layout'?
  198 |                 m_converter->SetOutputChannelLayout(&output_channel_layout);
      |                                                      ^~~~~~~~~~~~~~~~~~~~~
      |                                                      av_get_channel_layout
./src/audio/ffmpeg_audio_reader.h:199:39: error: base operand of '->' is not a pointer
  199 |                 auto ret = m_converter->Init();
      |                                       ^~
./src/audio/ffmpeg_audio_reader.h:206:35: error: 'output_channel_layout' was not declared in this scope; did you mean 'av_get_channel_layout'?
  206 |         av_channel_layout_uninit(&output_channel_layout);
      |                                   ^~~~~~~~~~~~~~~~~~~~~
      |                                   av_get_channel_layout
./src/audio/ffmpeg_audio_reader.h:206:9: error: 'av_channel_layout_uninit' was not declared in this scope; did you mean 'av_get_channel_layout_string'?
  206 |         av_channel_layout_uninit(&output_channel_layout);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~
      |         av_get_channel_layout_string
./src/audio/ffmpeg_audio_reader.h: In member function 'bool chromaprint::FFmpegAudioReader::Read(const int16_t**, size_t*)':
./src/audio/ffmpeg_audio_reader.h:316:105: error: 'AVCodecContext' {aka 'struct AVCodecContext'} has no member named 'ch_layout'; did you mean 'channel_layout'?
  316 |                                         ret = av_samples_alloc(m_convert_buffer, &linsize, m_codec_ctx->ch_layout.nb_channels, m_convert_buffer_nb_samples, AV_SAMPLE_FMT_S16, 1);
      |                                                                                                         ^~~~~~~~~
      |                                                                                                         channel_layout
./src/audio/ffmpeg_audio_reader.h:322:62: error: base operand of '->' is not a pointer
  322 |                                 auto nb_samples = m_converter->Convert(m_convert_buffer, m_convert_buffer_nb_samples, (const uint8_t **) m_frame->data, m_frame->nb_samples);
      |                                                              ^~
./src/audio/ffmpeg_audio_reader.h:336:70: error: base operand of '->' is not a pointer
  336 |                                         auto nb_samples = m_converter->Flush(m_convert_buffer, m_convert_buffer_nb_samples);
      |                                                                      ^~
./src/cmd/fpcalc.cpp: In function 'void ParseOptions(int&, char**)':
./src/cmd/fpcalc.cpp:132:34: error: 'LIBAVRESAMPLE_IDENT' was not declared in this scope; did you mean 'LIBAVUTIL_IDENT'?
  132 | #define RESAMPLE_LIB_IDENT_IDENT LIBAVRESAMPLE_IDENT
      |                                  ^~~~~~~~~~~~~~~~~~~
./src/cmd/fpcalc.cpp:134:146: note: in expansion of macro 'RESAMPLE_LIB_IDENT_IDENT'
  134 |                  fprintf(stdout, "fpcalc version %s (FFmpeg %s %s %s)\n", chromaprint_get_version(), LIBAVCODEC_IDENT, LIBAVFORMAT_IDENT, RESAMPLE_LIB_IDENT_IDENT);
      |                                                                                                                                           ^~~~~~~~~~~~~~~~~~~~~~~~

How is this possible? I thought that chromaprint would be too old and need a patch for ffmpeg 5.