Match FFmpeg AVIO and codec capability APIs across supported versions

src/video/video.c

@@ -402,7 +402,11 @@ struct vc_ctx {
 };
 
 /* Custom AVIO пишет в уже эксклюзивно открытый файл, без повторного открытия временного пути. */
+#if LIBAVFORMAT_VERSION_MAJOR >= 61
+static int vc_io_write(void* opaque, const uint8_t* bytes, int length) {
+#else
 static int vc_io_write(void* opaque, uint8_t* bytes, int length) {
+#endif
     struct vc_file* file = opaque;
     if (fwrite(bytes, 1, length, file->file) == (size_t)length) return length;
     int error = errno ? errno : EIO;
@@ -528,12 +532,25 @@ static int vc_open_audio(struct vc_ctx* ctx) {
     if (!stream->encoder) return AVERROR(ENOMEM);
     AVCodecContext* encoder = stream->encoder;
     encoder->bit_rate = VIDEO_TARGET_AUDIO_BITRATE; encoder->sample_rate = decoder->sample_rate;
-    if (codec->supported_samplerates) {
-        encoder->sample_rate = codec->supported_samplerates[0];
-        for (const int* rate = codec->supported_samplerates; *rate; rate++)
+    const int* rates;
+    const enum AVSampleFormat* formats;
+#if LIBAVCODEC_VERSION_MAJOR >= 61
+    const void* configurations;
+    int supported = avcodec_get_supported_config(encoder, codec, AV_CODEC_CONFIG_SAMPLE_RATE, 0, &configurations, NULL);
+    if (supported < 0) return supported;
+    rates = configurations;
+    supported = avcodec_get_supported_config(encoder, codec, AV_CODEC_CONFIG_SAMPLE_FORMAT, 0, &configurations, NULL);
+    if (supported < 0) return supported;
+    formats = configurations;
+#else
+    rates = codec->supported_samplerates; formats = codec->sample_fmts;
+#endif
+    if (rates) {
+        encoder->sample_rate = rates[0];
+        for (const int* rate = rates; *rate; rate++)
             if (abs(*rate - decoder->sample_rate) < abs(encoder->sample_rate - decoder->sample_rate)) encoder->sample_rate = *rate;
     }
-    encoder->sample_fmt = codec->sample_fmts ? codec->sample_fmts[0] : AV_SAMPLE_FMT_FLTP;
+    encoder->sample_fmt = formats ? formats[0] : AV_SAMPLE_FMT_FLTP;
     int error = av_channel_layout_copy(&encoder->ch_layout, &decoder->ch_layout);
     if (error < 0) return error;
     encoder->time_base = (AVRational){1, encoder->sample_rate};