Add support for ffmpeg 8 (#39)

* fix: change FF_PROFILE_UNKNOWN to AV_PROFILE_UNKNOWN in ffmpeg8

* refactor: define profile centrally in utils.h

Author: kevinschweikert

c_src/xav/decoder.h

@@ -25,4 +25,4 @@ int decoder_flush(struct Decoder *decoder, AVFrame **frames, int *frames_count);
 
 void decoder_free_frame(struct Decoder *decoder);
 
-void decoder_free(struct Decoder **decoder);
+void decoder_free(struct Decoder **decoder);

c_src/xav/encoder.c

@@ -42,7 +42,7 @@ int encoder_init(struct Encoder *encoder, struct EncoderConfig *config) {
     xav_set_channel_layout(encoder->c, &config->channel_layout);
   }
 
-  if (config->profile != FF_PROFILE_UNKNOWN) {
+  if (config->profile != AV_PROFILE_UNKNOWN) {
     encoder->c->profile = config->profile;
   }
 
@@ -107,4 +107,4 @@ void encoder_free(struct Encoder **encoder) {
     XAV_FREE(e);
     *encoder = NULL;
   }
-}
+}

c_src/xav/utils.h

@@ -7,6 +7,11 @@
 #include <libswresample/swresample.h>
 #include <libswscale/swscale.h>
 
+// FFmpeg ≤ 7 used FF_PROFILE_UNKNOWN, FFmpeg ≥ 8 uses AV_PROFILE_UNKNOWN
+#ifndef AV_PROFILE_UNKNOWN
+#define AV_PROFILE_UNKNOWN FF_PROFILE_UNKNOWN
+#endif
+
 #ifdef XAV_DEBUG
 #define XAV_LOG_DEBUG(X, ...)                                                                      \
   fprintf(stderr, "[XAV DEBUG %s] %s:%d " X "\n", __TIME__, __FILE__, __LINE__, ##__VA_ARGS__)

c_src/xav/xav_encoder.c

@@ -18,7 +18,7 @@ ERL_NIF_TERM new (ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
   ERL_NIF_TERM ret;
   struct EncoderConfig encoder_config = {0};
   encoder_config.max_b_frames = -1;
-  encoder_config.profile = FF_PROFILE_UNKNOWN;
+  encoder_config.profile = AV_PROFILE_UNKNOWN;
 
   char *codec_name = NULL, *format = NULL, *profile = NULL;
   char *channel_layout = NULL;
@@ -112,7 +112,7 @@ ERL_NIF_TERM new (ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
 
   if (profile) {
     encoder_config.profile = get_profile(encoder_config.codec->id, profile);
-    if (encoder_config.profile == FF_PROFILE_UNKNOWN) {
+    if (encoder_config.profile == AV_PROFILE_UNKNOWN) {
       ret = xav_nif_raise(env, "invalid_profile");
       goto clean;
     }
@@ -302,10 +302,10 @@ static int get_profile(enum AVCodecID codec, const char *profile_name) {
   const AVProfile *profile = desc->profiles;
 
   if (profile == NULL) {
-    return FF_PROFILE_UNKNOWN;
+    return AV_PROFILE_UNKNOWN;
   }
 
-  while (profile->profile != FF_PROFILE_UNKNOWN) {
+  while (profile->profile != AV_PROFILE_UNKNOWN) {
     if (strcmp(profile->name, profile_name) == 0) {
       break;
     }
@@ -326,7 +326,7 @@ static ERL_NIF_TERM codec_get_profiles(ErlNifEnv *env, const AVCodec *codec) {
     return result;
   }
 
-  while (profile->profile != FF_PROFILE_UNKNOWN) {
+  while (profile->profile != AV_PROFILE_UNKNOWN) {
     ERL_NIF_TERM profile_name = enif_make_string(env, profile->name, ERL_NIF_LATIN1);
     result = enif_make_list_cell(env, profile_name, result);
 
@@ -382,4 +382,4 @@ static int load(ErlNifEnv *env, void **priv, ERL_NIF_TERM load_info) {
   return 0;
 }
 
-ERL_NIF_INIT(Elixir.Xav.Encoder.NIF, xav_funcs, &load, NULL, NULL, NULL);
+ERL_NIF_INIT(Elixir.Xav.Encoder.NIF, xav_funcs, &load, NULL, NULL, NULL);