voukoder-ffmpeg/patches/0003-dynamic-loading-of-shared-fdk-aac-library-5.0.patch

diff --git a/configure b/configure
index 6b5ef6332e..19554a7572 100755
--- a/configure
+++ b/configure
@@ -1783,7 +1783,6 @@ EXTERNAL_LIBRARY_GPL_LIST="
 
 EXTERNAL_LIBRARY_NONFREE_LIST="
     decklink
-    libfdk_aac
     libtls
 "
 
@@ -1880,6 +1879,7 @@ EXTERNAL_LIBRARY_LIST="
     openssl
     pocketsphinx
     vapoursynth
+    libfdk_aac
 "
 
 HWACCEL_AUTODETECT_LIBRARY_LIST="
@@ -6525,9 +6525,7 @@ enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.5.0" "dav1d
 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
-enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
-                               { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
-                                 warn "using libfdk without pkg-config"; } }
+enabled libfdk_aac        && require_headers fdk-aac/aacenc_lib.h
 flite_extralibs="-lflite_cmu_time_awb -lflite_cmu_us_awb -lflite_cmu_us_kal -lflite_cmu_us_kal16 -lflite_cmu_us_rms -lflite_cmu_us_slt -lflite_usenglish -lflite_cmulex -lflite"
 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
 enabled fontconfig        && enable libfontconfig
diff --git a/libavcodec/libfdk-aacdec.c b/libavcodec/libfdk-aacdec.c
index ffa1fdcce3..b3ee1248ed 100644
--- a/libavcodec/libfdk-aacdec.c
+++ b/libavcodec/libfdk-aacdec.c
@@ -24,6 +24,7 @@
 #include "libavutil/opt.h"
 #include "avcodec.h"
 #include "internal.h"
+#include "libfdk-aac_internal.h"
 
 #ifdef AACDECODER_LIB_VL0
 #define FDKDEC_VER_AT_LEAST(vl0, vl1) \
@@ -47,6 +48,8 @@ enum ConcealMethod {
 typedef struct FDKAACDecContext {
     const AVClass *class;
     HANDLE_AACDECODER handle;
+    void *hLib;
+    aacDecLib pfn;
     uint8_t *decoder_buffer;
     int decoder_buffer_size;
     uint8_t *anc_buffer;
@@ -101,7 +104,7 @@ static const AVClass fdk_aac_dec_class = {
 static int get_stream_info(AVCodecContext *avctx)
 {
     FDKAACDecContext *s   = avctx->priv_data;
-    CStreamInfo *info     = aacDecoder_GetStreamInfo(s->handle);
+    CStreamInfo *info     = s->pfn.aacDecoder_GetStreamInfo(s->handle);
     int channel_counts[0x24] = { 0 };
     int i, ch_error       = 0;
     uint64_t ch_layout    = 0;
@@ -216,8 +219,10 @@ static av_cold int fdk_aac_decode_close(AVCodecContext *avctx)
 {
     FDKAACDecContext *s = avctx->priv_data;
 
-    if (s->handle)
-        aacDecoder_Close(s->handle);
+    if (s->hLib && s->handle) {
+        s->pfn.aacDecoder_Close(s->handle);
+        dlclose(s->hLib);
+    }
     av_freep(&s->decoder_buffer);
     av_freep(&s->anc_buffer);
 
@@ -229,6 +234,27 @@ static av_cold int fdk_aac_decode_init(AVCodecContext *avctx)
     FDKAACDecContext *s = avctx->priv_data;
     AAC_DECODER_ERROR err;
 
+    if (!(s->hLib = dlopen(LIBNAME, RTLD_NOW))) {
+        av_log(avctx, AV_LOG_ERROR, "Unable to load " LIBNAME "\n");
+        return -1;
+    }
+
+    DLSYM(aacDecoder_Open);
+#define aacDecoder_Open s->pfn.aacDecoder_Open
+    DLSYM(aacDecoder_Close);
+    DLSYM(aacDecoder_Fill);
+#define aacDecoder_Fill s->pfn.aacDecoder_Fill
+    DLSYM(aacDecoder_DecodeFrame);
+#define aacDecoder_DecodeFrame s->pfn.aacDecoder_DecodeFrame
+    DLSYM(aacDecoder_GetStreamInfo);
+#define aacDecoder_GetStreamInfo s->pfn.aacDecoder_GetStreamInfo
+    DLSYM(aacDecoder_ConfigRaw);
+#define aacDecoder_ConfigRaw s->pfn.aacDecoder_ConfigRaw
+    DLSYM(aacDecoder_SetParam);
+#define aacDecoder_SetParam s->pfn.aacDecoder_SetParam
+    DLSYM(aacDecoder_AncDataInit);
+#define aacDecoder_AncDataInit s->pfn.aacDecoder_AncDataInit
+
     s->handle = aacDecoder_Open(avctx->extradata_size ? TT_MP4_RAW : TT_MP4_ADTS, 1);
     if (!s->handle) {
         av_log(avctx, AV_LOG_ERROR, "Error opening decoder\n");
diff --git a/libavcodec/libfdk-aacenc.c b/libavcodec/libfdk-aacenc.c
index 7ee2f13ac7..7eb1475c6a 100644
--- a/libavcodec/libfdk-aacenc.c
+++ b/libavcodec/libfdk-aacenc.c
@@ -28,6 +28,8 @@
 #include "internal.h"
 #include "profiles.h"
 
+#include "libfdk-aac_internal.h"
+
 #ifdef AACENCODER_LIB_VL0
 #define FDKENC_VER_AT_LEAST(vl0, vl1) \
     ((AACENCODER_LIB_VL0 > vl0) || \
@@ -47,6 +49,8 @@ typedef struct AACContext {
     int header_period;
     int vbr;
 
+    void *hLib;
+    aacEncLib pfn;
     AudioFrameQueue afq;
 } AACContext;
 
@@ -128,6 +132,21 @@ static av_cold int aac_encode_init(AVCodecContext *avctx)
     int aot = FF_PROFILE_AAC_LOW + 1;
     int sce = 0, cpe = 0;
 
+    if (!(s->hLib = dlopen(LIBNAME, RTLD_NOW))) {
+        av_log(avctx, AV_LOG_ERROR, "Unable to load " LIBNAME "\n");
+        return -1;
+    }
+
+    DLSYM(aacEncOpen);
+#define aacEncOpen s->pfn.aacEncOpen
+    DLSYM(aacEncClose);
+    DLSYM(aacEncEncode);
+#define aacEncEncode s->pfn.aacEncEncode
+    DLSYM(aacEncInfo);
+#define aacEncInfo s->pfn.aacEncInfo
+    DLSYM(aacEncoder_SetParam);
+#define aacEncoder_SetParam s->pfn.aacEncoder_SetParam
+
     if ((err = aacEncOpen(&s->handle, 0, avctx->channels)) != AACENC_OK) {
         av_log(avctx, AV_LOG_ERROR, "Unable to open the encoder: %s\n",
                aac_get_error(err));