dlopen() support for ad and vd

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@8153 b3059339-0415-0410-9bf9-f77b7e298cf2

2 files changed, 81 insertions, 0 deletions

diff --git a/libmpcodecs/dec_audio.c b/libmpcodecs/dec_audio.c
index 60d536e043..3b12ae4972 100644
--- a/libmpcodecs/dec_audio.c
+++ b/libmpcodecs/dec_audio.c
@@ -18,6 +18,10 @@
 
 #include "../libaf/af.h"
 
+#ifdef DYNAMIC_PLUGINS
+#include <dlfcn.h>
+#endif
+
 #ifdef USE_FAKE_MONO
 int fakemono=0;
 #endif
@@ -147,6 +151,39 @@ int init_audio(sh_audio_t *sh_audio,char* codecname,char* afm,int status){
 	for (i=0; mpcodecs_ad_drivers[i] != NULL; i++)
 	    if(!strcmp(mpcodecs_ad_drivers[i]->info->short_name,sh_audio->codec->drv)) break;
 	mpadec=mpcodecs_ad_drivers[i];
+#ifdef DYNAMIC_PLUGINS
+	if (!mpadec)
+	{
+	    /* try to open shared decoder plugin */
+	    int buf_len;
+	    char *buf;
+	    ad_functions_t *funcs_sym;
+	    ad_info_t *info_sym;
+	    
+	    buf_len = strlen(LIBDIR)+strlen(sh_audio->codec->drv)+16;
+	    buf = malloc(buf_len);
+	    if (!buf)
+		break;
+	    snprintf(buf, buf_len, "%s/mplayer/ad_%s.so", LIBDIR, sh_audio->codec->drv);
+	    mp_msg(MSGT_DECAUDIO, MSGL_DBG2, "Trying to open external plugin: %s\n", buf);
+	    sh_audio->dec_handle = dlopen(buf, RTLD_LAZY);
+	    if (!sh_audio->dec_handle)
+		break;
+	    snprintf(buf, buf_len, "mpcodecs_ad_%s", sh_audio->codec->drv);
+	    funcs_sym = dlsym(sh_audio->dec_handle, buf);
+	    if (!funcs_sym || !funcs_sym->info || !funcs_sym->preinit ||
+		!funcs_sym->init || !funcs_sym->uninit || !funcs_sym->control ||
+		!funcs_sym->decode_audio)
+		break;
+	    info_sym = funcs_sym->info;
+	    if (strcmp(info_sym->short_name, sh_audio->codec->drv))
+		break;
+	    free(buf);
+	    mpadec = funcs_sym;
+	    mp_msg(MSGT_DECAUDIO, MSGL_V, "Using external decoder plugin (%s/mplayer/ad_%s.so)!\n",
+		LIBDIR, sh_audio->codec->drv);
+	}
+#endif
 	if(!mpadec){ // driver not available (==compiled in)
             mp_msg(MSGT_DECAUDIO,MSGL_ERR,MSGTR_AudioCodecFamilyNotAvailableStr,
         	sh_audio->codec->name, sh_audio->codec->drv);
@@ -225,6 +262,10 @@ void uninit_audio(sh_audio_t *sh_audio)
     if(sh_audio->inited){
 	mp_msg(MSGT_DECAUDIO,MSGL_V,MSGTR_UninitAudioStr,sh_audio->codec->drv);
 	mpadec->uninit(sh_audio);
+#ifdef DYNAMIC_PLUGINS
+	if (sh_audio->dec_handle)
+	    dlclose(sh_audio->dec_handle);
+#endif
 	sh_audio->inited=0;
     }
     if(sh_audio->a_out_buffer!=sh_audio->a_buffer) free(sh_audio->a_out_buffer);
diff --git a/libmpcodecs/dec_video.c b/libmpcodecs/dec_video.c
index fd93031494..78758b2085 100644
--- a/libmpcodecs/dec_video.c
+++ b/libmpcodecs/dec_video.c
@@ -28,6 +28,10 @@
 
 #include "dec_video.h"
 
+#ifdef DYNAMIC_PLUGINS
+#include <dlfcn.h>
+#endif
+
 // ===================================================================
 
 extern double video_time_usage;
@@ -134,6 +138,10 @@ void uninit_video(sh_video_t *sh_video){
     if(!sh_video->inited) return;
     mp_msg(MSGT_DECVIDEO,MSGL_V,MSGTR_UninitVideoStr,sh_video->codec->drv);
     mpvdec->uninit(sh_video);
+#ifdef DYNAMIC_PLUGINS
+    if (sh_video->dec_handle)
+	dlclose(sh_video->dec_handle);
+#endif
     vf_uninit_filter_chain(sh_video->vfilter);
     sh_video->inited=0;
 }
@@ -172,6 +180,38 @@ int init_video(sh_video_t *sh_video,char* codecname,char* vfm,int status){
 //	    if(mpcodecs_vd_drivers[i]->info->id==sh_video->codec->driver) break;
 	    if(!strcmp(mpcodecs_vd_drivers[i]->info->short_name,sh_video->codec->drv)) break;
 	mpvdec=mpcodecs_vd_drivers[i];
+#ifdef DYNAMIC_PLUGINS
+	if (!mpvdec)
+	{
+	    /* try to open shared decoder plugin */
+	    int buf_len;
+	    char *buf;
+	    vd_functions_t *funcs_sym;
+	    vd_info_t *info_sym;
+
+	    buf_len = strlen(LIBDIR)+strlen(sh_video->codec->drv)+16;
+	    buf = malloc(buf_len);
+	    if (!buf)
+		break;
+	    snprintf(buf, buf_len, "%s/mplayer/vd_%s.so", LIBDIR, sh_video->codec->drv);
+	    mp_msg(MSGT_DECVIDEO, MSGL_DBG2, "Trying to open external plugin: %s\n", buf);
+	    sh_video->dec_handle = dlopen(buf, RTLD_LAZY);
+	    if (!sh_video->dec_handle)
+		break;
+	    snprintf(buf, buf_len, "mpcodecs_vd_%s", sh_video->codec->drv);
+	    funcs_sym = dlsym(sh_video->dec_handle, buf);
+	    if (!funcs_sym || !funcs_sym->info || !funcs_sym->init ||
+		!funcs_sym->uninit || !funcs_sym->control || !funcs_sym->decode)
+		break;
+	    info_sym = funcs_sym->info;
+	    if (strcmp(info_sym->short_name, sh_video->codec->drv))
+		break;
+	    free(buf);
+	    mpvdec = funcs_sym;
+	    mp_msg(MSGT_DECVIDEO, MSGL_V, "Using external decoder plugin (%s/mplayer/vd_%s.so)!\n",
+		LIBDIR, sh_video->codec->drv);
+	}
+#endif
 	if(!mpvdec){ // driver not available (==compiled in)
 	    mp_msg(MSGT_DECVIDEO,MSGL_WARN,MSGTR_VideoCodecFamilyNotAvailableStr,
 		sh_video->codec->name, sh_video->codec->drv);