From 070b70c26bfc769ccb2800bb9a564fb5cdccb896 Mon Sep 17 00:00:00 2001
From: Isaac Connor <iconnor@connortechnology.com>
Date: Mon, 19 Jun 2023 10:57:13 -0400
Subject: [PATCH] Handle ffmpeg5 channel deprecations

---
 src/zm_camera.h       |  7 ++++++-
 src/zm_ffmpeg.h       | 13 +++++++++++++
 src/zm_videostore.cpp | 33 +++++++++++++++++++++++++++++++--
 3 files changed, 50 insertions(+), 3 deletions(-)

diff --git a/src/zm_camera.h b/src/zm_camera.h
index 90d715110..2d2b853ab 100644
--- a/src/zm_camera.h
+++ b/src/zm_camera.h
@@ -100,7 +100,12 @@ public:
   unsigned long long ImageSize() const { return imagesize; }
   unsigned int Bytes() const { return bytes; };
   int getFrequency() { return mAudioStream ? mAudioStream->codecpar->sample_rate : -1; }
-  int getChannels() { return mAudioStream ? mAudioStream->codecpar->channels : -1; }
+  int getChannels() {
+#if LIBAVUTIL_VERSION_CHECK(57, 28, 100, 28, 0)
+    return mAudioStream ? mAudioStream->codecpar->ch_layout.nb_channels : -1; }
+#else
+    return mAudioStream ? mAudioStream->codecpar->channels : -1; }
+#endif
 
   virtual int Brightness( int/*p_brightness*/=-1 ) { return -1; }
   virtual int Hue( int/*p_hue*/=-1 ) { return -1; }
diff --git a/src/zm_ffmpeg.h b/src/zm_ffmpeg.h
index cbb661e59..6d983ce0f 100644
--- a/src/zm_ffmpeg.h
+++ b/src/zm_ffmpeg.h
@@ -147,6 +147,18 @@ void zm_dump_stream_format(AVFormatContext *ic, int i, int index, int is_output)
 void zm_dump_codec(const AVCodecContext *codec);
 void zm_dump_codecpar(const AVCodecParameters *par);
 
+#if LIBAVUTIL_VERSION_CHECK(57, 28, 100, 28, 0)
+#define zm_dump_frame(frame, text) Debug(1, "%s: format %d %s sample_rate %" PRIu32 " nb_samples %d" \
+      " layout %" PRIu64 " pts %" PRId64, \
+      text, \
+      frame->format, \
+      av_get_sample_fmt_name((AVSampleFormat)frame->format), \
+      frame->sample_rate, \
+      frame->nb_samples, \
+      frame->ch_layout.u.mask, \
+      frame->pts \
+      );
+#else
 #define zm_dump_frame(frame, text) Debug(1, "%s: format %d %s sample_rate %" PRIu32 " nb_samples %d" \
       " layout %" PRIu64 " pts %" PRId64, \
       text, \
@@ -157,6 +169,7 @@ void zm_dump_codecpar(const AVCodecParameters *par);
       frame->channel_layout, \
       frame->pts \
       );
+#endif
 
 #define zm_dump_video_frame(frame, text) Debug(1, "%s: format %d %s %dx%d linesize:%dx%d pts: %" PRId64 " keyframe: %d", \
       text, \
diff --git a/src/zm_videostore.cpp b/src/zm_videostore.cpp
index d29d6718b..ee24be4f9 100644
--- a/src/zm_videostore.cpp
+++ b/src/zm_videostore.cpp
@@ -496,7 +496,11 @@ bool VideoStore::open() {
               av_make_error_string(ret).c_str());
       }
 
+#if LIBAVUTIL_VERSION_CHECK(57, 28, 100, 28, 0)
+      if (audio_out_ctx->ch_layout.nb_channels > 1) {
+#else
       if (audio_out_ctx->channels > 1) {
+#endif
         Warning("Audio isn't mono, changing it.");
         audio_out_ctx->channels = 1;
       } else {
@@ -896,6 +900,16 @@ bool VideoStore::setup_resampler() {
     Error("Could not allocate FIFO");
     return false;
   }
+#if LIBAVUTIL_VERSION_CHECK(57, 28, 100, 28, 0)
+  resample_ctx = swr_alloc_set_opts2(nullptr,
+      &audio_out_ctx->ch_layout,
+      audio_out_ctx->sample_fmt,
+      audio_out_ctx->sample_rate,
+      &audio_in_ctx->ch_layout,
+      audio_in_ctx->sample_fmt,
+      audio_in_ctx->sample_rate,
+      0, nullptr);
+#else
   resample_ctx = swr_alloc_set_opts(nullptr,
       audio_out_ctx->channel_layout,
       audio_out_ctx->sample_fmt,
@@ -904,6 +918,7 @@ bool VideoStore::setup_resampler() {
       audio_in_ctx->sample_fmt,
       audio_in_ctx->sample_rate,
       0, nullptr);
+#endif
   if (!resample_ctx) {
     Error("Could not allocate resample context");
     return false;
@@ -917,14 +932,23 @@ bool VideoStore::setup_resampler() {
 
   out_frame->nb_samples = audio_out_ctx->frame_size;
   out_frame->format = audio_out_ctx->sample_fmt;
+#if LIBAVUTIL_VERSION_CHECK(57, 28, 100, 28, 0)
+  out_frame->ch_layout = audio_out_ctx->ch_layout,
+#else
   out_frame->channels = audio_out_ctx->channels;
   out_frame->channel_layout = audio_out_ctx->channel_layout;
+#endif
   out_frame->sample_rate = audio_out_ctx->sample_rate;
 
   // The codec gives us the frame size, in samples, we calculate the size of the
   // samples buffer in bytes
   unsigned int audioSampleBuffer_size = av_samples_get_buffer_size(
-      nullptr, audio_out_ctx->channels,
+      nullptr,
+#if LIBAVUTIL_VERSION_CHECK(57, 28, 100, 28, 0)
+      audio_out_ctx->ch_layout.nb_channels,
+#else
+      audio_out_ctx->channels,
+#endif
       audio_out_ctx->frame_size,
       audio_out_ctx->sample_fmt, 0);
   converted_in_samples = reinterpret_cast<uint8_t *>(av_malloc(audioSampleBuffer_size));
@@ -938,7 +962,12 @@ bool VideoStore::setup_resampler() {
 
   // Setup the data pointers in the AVFrame
   if (avcodec_fill_audio_frame(
-        out_frame.get(), audio_out_ctx->channels,
+        out_frame.get(),
+#if LIBAVUTIL_VERSION_CHECK(57, 28, 100, 28, 0)
+        audio_out_ctx->ch_layout.nb_channels,
+#else
+        audio_out_ctx->channels,
+#endif
         audio_out_ctx->sample_fmt,
         (const uint8_t *)converted_in_samples,
         audioSampleBuffer_size, 0) < 0) {