mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-26 19:51:11 +00:00
Properly attach and detach the current threads to the Java VM
Attaching a thread after it was detached will cause segfaults, as such we use a pthread_key_t to keep track of the JNIEnv* of the attached threads and in the destructor (i.e. when the thread exits) we detach the thread.
This commit is contained in:
Sebastian Dröge
parent
bafd4a0b19
commit
a98a627370
1 changed files with 51 additions and 69 deletions
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@ -32,6 +32,8 @@
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#include <string.h>
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#include <jni.h>
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#include <pthread.h>
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GST_DEBUG_CATEGORY (gst_amc_debug);
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#define GST_CAT_DEFAULT gst_amc_debug
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@ -92,6 +94,8 @@ static struct
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jmethodID set_byte_buffer;
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} media_format;
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static pthread_key_t current_jni_env;
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static JNIEnv *
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gst_amc_attach_current_thread (void)
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{
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@ -112,13 +116,23 @@ gst_amc_attach_current_thread (void)
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}
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static void
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gst_amc_detach_current_thread (void)
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gst_amc_detach_current_thread (void *env)
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{
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/* FIXME: At some point we need to detach threads, otherwise
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* we leak memory
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*/
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GST_DEBUG ("FIXME: Not detaching thread %p", g_thread_self ());
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/*(*java_vm)->DetachCurrentThread (java_vm); */
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GST_DEBUG ("Detaching thread %p", g_thread_self ());
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(*java_vm)->DetachCurrentThread (java_vm);
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}
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static JNIEnv *
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gst_amc_get_jni_env (void)
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{
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JNIEnv *env;
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if ((env = pthread_getspecific (current_jni_env)) == NULL) {
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env = gst_amc_attach_current_thread ();
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pthread_setspecific (current_jni_env, env);
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}
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return env;
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}
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static gboolean
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@ -206,7 +220,7 @@ gst_amc_codec_new (const gchar * name)
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g_return_val_if_fail (name != NULL, NULL);
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env = gst_amc_attach_current_thread ();
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env = gst_amc_get_jni_env ();
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name_str = (*env)->NewStringUTF (env, name);
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if (name_str == NULL)
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@ -236,7 +250,6 @@ done:
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if (name_str)
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(*env)->DeleteLocalRef (env, name_str);
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name_str = NULL;
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gst_amc_detach_current_thread ();
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return codec;
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@ -254,10 +267,9 @@ gst_amc_codec_free (GstAmcCodec * codec)
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g_return_if_fail (codec != NULL);
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env = gst_amc_attach_current_thread ();
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env = gst_amc_get_jni_env ();
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(*env)->DeleteGlobalRef (env, codec->object);
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g_slice_free (GstAmcCodec, codec);
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gst_amc_detach_current_thread ();
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}
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gboolean
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@ -269,7 +281,7 @@ gst_amc_codec_configure (GstAmcCodec * codec, GstAmcFormat * format, gint flags)
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g_return_val_if_fail (codec != NULL, FALSE);
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g_return_val_if_fail (format != NULL, FALSE);
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env = gst_amc_attach_current_thread ();
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env = gst_amc_get_jni_env ();
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(*env)->CallVoidMethod (env, codec->object, media_codec.configure,
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format->object, NULL, NULL, flags);
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@ -281,7 +293,6 @@ gst_amc_codec_configure (GstAmcCodec * codec, GstAmcFormat * format, gint flags)
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}
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done:
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gst_amc_detach_current_thread ();
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return ret;
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}
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@ -295,7 +306,7 @@ gst_amc_codec_get_output_format (GstAmcCodec * codec)
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g_return_val_if_fail (codec != NULL, NULL);
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env = gst_amc_attach_current_thread ();
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env = gst_amc_get_jni_env ();
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object =
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(*env)->CallObjectMethod (env, codec->object,
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@ -319,7 +330,6 @@ gst_amc_codec_get_output_format (GstAmcCodec * codec)
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(*env)->DeleteLocalRef (env, object);
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done:
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gst_amc_detach_current_thread ();
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return ret;
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}
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@ -332,7 +342,7 @@ gst_amc_codec_start (GstAmcCodec * codec)
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g_return_val_if_fail (codec != NULL, FALSE);
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env = gst_amc_attach_current_thread ();
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env = gst_amc_get_jni_env ();
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(*env)->CallVoidMethod (env, codec->object, media_codec.start);
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if ((*env)->ExceptionCheck (env)) {
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@ -343,7 +353,6 @@ gst_amc_codec_start (GstAmcCodec * codec)
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}
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done:
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gst_amc_detach_current_thread ();
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return ret;
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}
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@ -356,7 +365,7 @@ gst_amc_codec_stop (GstAmcCodec * codec)
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g_return_val_if_fail (codec != NULL, FALSE);
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env = gst_amc_attach_current_thread ();
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env = gst_amc_get_jni_env ();
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(*env)->CallVoidMethod (env, codec->object, media_codec.stop);
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if ((*env)->ExceptionCheck (env)) {
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@ -367,7 +376,6 @@ gst_amc_codec_stop (GstAmcCodec * codec)
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}
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done:
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gst_amc_detach_current_thread ();
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return ret;
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}
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@ -380,7 +388,7 @@ gst_amc_codec_flush (GstAmcCodec * codec)
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g_return_val_if_fail (codec != NULL, FALSE);
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env = gst_amc_attach_current_thread ();
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env = gst_amc_get_jni_env ();
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(*env)->CallVoidMethod (env, codec->object, media_codec.flush);
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if ((*env)->ExceptionCheck (env)) {
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@ -391,7 +399,6 @@ gst_amc_codec_flush (GstAmcCodec * codec)
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}
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done:
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gst_amc_detach_current_thread ();
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return ret;
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}
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@ -404,7 +411,7 @@ gst_amc_codec_release (GstAmcCodec * codec)
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g_return_val_if_fail (codec != NULL, FALSE);
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env = gst_amc_attach_current_thread ();
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env = gst_amc_get_jni_env ();
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(*env)->CallVoidMethod (env, codec->object, media_codec.release);
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if ((*env)->ExceptionCheck (env)) {
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@ -415,7 +422,6 @@ gst_amc_codec_release (GstAmcCodec * codec)
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}
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done:
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gst_amc_detach_current_thread ();
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return ret;
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}
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@ -428,15 +434,13 @@ gst_amc_codec_free_buffers (GstAmcBuffer * buffers, gsize n_buffers)
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g_return_if_fail (buffers != NULL);
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env = gst_amc_attach_current_thread ();
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env = gst_amc_get_jni_env ();
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for (i = 0; i < n_buffers; i++) {
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if (buffers[i].object)
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(*env)->DeleteGlobalRef (env, buffers[i].object);
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}
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g_free (buffers);
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gst_amc_detach_current_thread ();
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}
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GstAmcBuffer *
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@ -452,7 +456,7 @@ gst_amc_codec_get_output_buffers (GstAmcCodec * codec, gsize * n_buffers)
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g_return_val_if_fail (n_buffers != NULL, NULL);
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*n_buffers = 0;
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env = gst_amc_attach_current_thread ();
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env = gst_amc_get_jni_env ();
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output_buffers =
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(*env)->CallObjectMethod (env, codec->object,
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@ -505,8 +509,6 @@ done:
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(*env)->DeleteLocalRef (env, output_buffers);
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output_buffers = NULL;
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gst_amc_detach_current_thread ();
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return ret;
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error:
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if (ret)
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@ -529,7 +531,7 @@ gst_amc_codec_get_input_buffers (GstAmcCodec * codec, gsize * n_buffers)
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g_return_val_if_fail (n_buffers != NULL, NULL);
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*n_buffers = 0;
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env = gst_amc_attach_current_thread ();
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env = gst_amc_get_jni_env ();
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input_buffers =
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(*env)->CallObjectMethod (env, codec->object,
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@ -582,8 +584,6 @@ done:
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(*env)->DeleteLocalRef (env, input_buffers);
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input_buffers = NULL;
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gst_amc_detach_current_thread ();
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return ret;
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error:
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if (ret)
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@ -601,7 +601,7 @@ gst_amc_codec_dequeue_input_buffer (GstAmcCodec * codec, gint64 timeoutUs)
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g_return_val_if_fail (codec != NULL, G_MININT);
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env = gst_amc_attach_current_thread ();
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env = gst_amc_get_jni_env ();
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ret =
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(*env)->CallIntMethod (env, codec->object,
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@ -614,7 +614,6 @@ gst_amc_codec_dequeue_input_buffer (GstAmcCodec * codec, gint64 timeoutUs)
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}
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done:
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gst_amc_detach_current_thread ();
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return ret;
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}
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@ -671,7 +670,7 @@ gst_amc_codec_dequeue_output_buffer (GstAmcCodec * codec,
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g_return_val_if_fail (codec != NULL, G_MININT);
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env = gst_amc_attach_current_thread ();
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env = gst_amc_get_jni_env ();
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info_o =
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(*env)->NewObject (env, media_codec_buffer_info.klass,
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@ -702,8 +701,6 @@ done:
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(*env)->DeleteLocalRef (env, info_o);
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info_o = NULL;
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gst_amc_detach_current_thread ();
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return ret;
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}
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@ -717,7 +714,7 @@ gst_amc_codec_queue_input_buffer (GstAmcCodec * codec, gint index,
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g_return_val_if_fail (codec != NULL, FALSE);
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g_return_val_if_fail (info != NULL, FALSE);
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env = gst_amc_attach_current_thread ();
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env = gst_amc_get_jni_env ();
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(*env)->CallVoidMethod (env, codec->object, media_codec.queue_input_buffer,
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index, info->offset, info->size, info->presentation_time_us, info->flags);
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@ -729,7 +726,6 @@ gst_amc_codec_queue_input_buffer (GstAmcCodec * codec, gint index,
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}
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done:
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gst_amc_detach_current_thread ();
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return ret;
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}
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@ -742,7 +738,7 @@ gst_amc_codec_release_output_buffer (GstAmcCodec * codec, gint index)
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g_return_val_if_fail (codec != NULL, FALSE);
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env = gst_amc_attach_current_thread ();
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env = gst_amc_get_jni_env ();
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(*env)->CallVoidMethod (env, codec->object, media_codec.release_output_buffer,
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index, JNI_FALSE);
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@ -754,7 +750,6 @@ gst_amc_codec_release_output_buffer (GstAmcCodec * codec, gint index)
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}
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done:
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gst_amc_detach_current_thread ();
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return ret;
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}
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@ -769,7 +764,7 @@ gst_amc_format_new_audio (const gchar * mime, gint sample_rate, gint channels)
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g_return_val_if_fail (mime != NULL, NULL);
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env = gst_amc_attach_current_thread ();
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env = gst_amc_get_jni_env ();
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mime_str = (*env)->NewStringUTF (env, mime);
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if (mime_str == NULL)
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@ -799,7 +794,6 @@ done:
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if (mime_str)
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(*env)->DeleteLocalRef (env, mime_str);
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mime_str = NULL;
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gst_amc_detach_current_thread ();
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return format;
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@ -820,7 +814,7 @@ gst_amc_format_new_video (const gchar * mime, gint width, gint height)
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g_return_val_if_fail (mime != NULL, NULL);
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env = gst_amc_attach_current_thread ();
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env = gst_amc_get_jni_env ();
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mime_str = (*env)->NewStringUTF (env, mime);
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if (mime_str == NULL)
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@ -850,7 +844,6 @@ done:
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if (mime_str)
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(*env)->DeleteLocalRef (env, mime_str);
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mime_str = NULL;
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gst_amc_detach_current_thread ();
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return format;
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@ -868,10 +861,9 @@ gst_amc_format_free (GstAmcFormat * format)
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g_return_if_fail (format != NULL);
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env = gst_amc_attach_current_thread ();
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env = gst_amc_get_jni_env ();
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(*env)->DeleteGlobalRef (env, format->object);
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g_slice_free (GstAmcFormat, format);
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gst_amc_detach_current_thread ();
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}
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gboolean
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@ -884,7 +876,7 @@ gst_amc_format_contains_key (GstAmcFormat * format, const gchar * key)
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g_return_val_if_fail (format != NULL, FALSE);
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g_return_val_if_fail (key != NULL, FALSE);
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env = gst_amc_attach_current_thread ();
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env = gst_amc_get_jni_env ();
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key_str = (*env)->NewStringUTF (env, key);
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if (!key_str)
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@ -902,7 +894,6 @@ gst_amc_format_contains_key (GstAmcFormat * format, const gchar * key)
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done:
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if (key_str)
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(*env)->DeleteLocalRef (env, key_str);
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gst_amc_detach_current_thread ();
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return ret;
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}
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@ -920,7 +911,7 @@ gst_amc_format_get_float (GstAmcFormat * format, const gchar * key,
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g_return_val_if_fail (value != NULL, FALSE);
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*value = 0;
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env = gst_amc_attach_current_thread ();
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env = gst_amc_get_jni_env ();
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key_str = (*env)->NewStringUTF (env, key);
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if (!key_str)
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@ -939,7 +930,6 @@ gst_amc_format_get_float (GstAmcFormat * format, const gchar * key,
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done:
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if (key_str)
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(*env)->DeleteLocalRef (env, key_str);
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gst_amc_detach_current_thread ();
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return ret;
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}
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@ -954,7 +944,7 @@ gst_amc_format_set_float (GstAmcFormat * format, const gchar * key,
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g_return_if_fail (format != NULL);
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g_return_if_fail (key != NULL);
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env = gst_amc_attach_current_thread ();
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env = gst_amc_get_jni_env ();
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key_str = (*env)->NewStringUTF (env, key);
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if (!key_str)
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@ -971,7 +961,6 @@ gst_amc_format_set_float (GstAmcFormat * format, const gchar * key,
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done:
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if (key_str)
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(*env)->DeleteLocalRef (env, key_str);
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gst_amc_detach_current_thread ();
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}
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gboolean
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@ -986,7 +975,7 @@ gst_amc_format_get_int (GstAmcFormat * format, const gchar * key, gint * value)
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g_return_val_if_fail (value != NULL, FALSE);
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*value = 0;
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env = gst_amc_attach_current_thread ();
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env = gst_amc_get_jni_env ();
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key_str = (*env)->NewStringUTF (env, key);
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if (!key_str)
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@ -1005,7 +994,6 @@ gst_amc_format_get_int (GstAmcFormat * format, const gchar * key, gint * value)
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done:
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if (key_str)
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(*env)->DeleteLocalRef (env, key_str);
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gst_amc_detach_current_thread ();
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return ret;
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@ -1020,7 +1008,7 @@ gst_amc_format_set_int (GstAmcFormat * format, const gchar * key, gint value)
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g_return_if_fail (format != NULL);
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g_return_if_fail (key != NULL);
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env = gst_amc_attach_current_thread ();
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env = gst_amc_get_jni_env ();
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key_str = (*env)->NewStringUTF (env, key);
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if (!key_str)
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@ -1037,7 +1025,6 @@ gst_amc_format_set_int (GstAmcFormat * format, const gchar * key, gint value)
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done:
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if (key_str)
|
||||
(*env)->DeleteLocalRef (env, key_str);
|
||||
gst_amc_detach_current_thread ();
|
||||
}
|
||||
|
||||
gboolean
|
||||
|
|
@ -1055,7 +1042,7 @@ gst_amc_format_get_string (GstAmcFormat * format, const gchar * key,
|
|||
g_return_val_if_fail (value != NULL, FALSE);
|
||||
|
||||
*value = 0;
|
||||
env = gst_amc_attach_current_thread ();
|
||||
env = gst_amc_get_jni_env ();
|
||||
|
||||
key_str = (*env)->NewStringUTF (env, key);
|
||||
if (!key_str)
|
||||
|
|
@ -1088,7 +1075,6 @@ done:
|
|||
(*env)->ReleaseStringUTFChars (env, v_str, v);
|
||||
if (v_str)
|
||||
(*env)->DeleteLocalRef (env, v_str);
|
||||
gst_amc_detach_current_thread ();
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
|
@ -1105,7 +1091,7 @@ gst_amc_format_set_string (GstAmcFormat * format, const gchar * key,
|
|||
g_return_if_fail (key != NULL);
|
||||
g_return_if_fail (value != NULL);
|
||||
|
||||
env = gst_amc_attach_current_thread ();
|
||||
env = gst_amc_get_jni_env ();
|
||||
|
||||
key_str = (*env)->NewStringUTF (env, key);
|
||||
if (!key_str)
|
||||
|
|
@ -1128,7 +1114,6 @@ done:
|
|||
(*env)->DeleteLocalRef (env, key_str);
|
||||
if (v_str)
|
||||
(*env)->DeleteLocalRef (env, v_str);
|
||||
gst_amc_detach_current_thread ();
|
||||
}
|
||||
|
||||
gboolean
|
||||
|
|
@ -1147,7 +1132,7 @@ gst_amc_format_get_buffer (GstAmcFormat * format, const gchar * key,
|
|||
g_return_val_if_fail (value != NULL, FALSE);
|
||||
|
||||
*value = 0;
|
||||
env = gst_amc_attach_current_thread ();
|
||||
env = gst_amc_get_jni_env ();
|
||||
|
||||
key_str = (*env)->NewStringUTF (env, key);
|
||||
if (!key_str)
|
||||
|
|
@ -1178,7 +1163,6 @@ done:
|
|||
(*env)->DeleteLocalRef (env, key_str);
|
||||
if (v)
|
||||
(*env)->DeleteLocalRef (env, v);
|
||||
gst_amc_detach_current_thread ();
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
|
@ -1195,7 +1179,7 @@ gst_amc_format_set_buffer (GstAmcFormat * format, const gchar * key,
|
|||
g_return_if_fail (key != NULL);
|
||||
g_return_if_fail (value != NULL);
|
||||
|
||||
env = gst_amc_attach_current_thread ();
|
||||
env = gst_amc_get_jni_env ();
|
||||
|
||||
key_str = (*env)->NewStringUTF (env, key);
|
||||
if (!key_str)
|
||||
|
|
@ -1220,7 +1204,6 @@ done:
|
|||
(*env)->DeleteLocalRef (env, key_str);
|
||||
if (v)
|
||||
(*env)->DeleteLocalRef (env, v);
|
||||
gst_amc_detach_current_thread ();
|
||||
}
|
||||
|
||||
static gboolean
|
||||
|
|
@ -1232,7 +1215,7 @@ get_java_classes (void)
|
|||
|
||||
GST_DEBUG ("Retrieving Java classes");
|
||||
|
||||
env = gst_amc_attach_current_thread ();
|
||||
env = gst_amc_get_jni_env ();
|
||||
|
||||
tmp = (*env)->FindClass (env, "java/lang/String");
|
||||
if (!tmp) {
|
||||
|
|
@ -1435,7 +1418,6 @@ done:
|
|||
if (tmp)
|
||||
(*env)->DeleteLocalRef (env, tmp);
|
||||
tmp = NULL;
|
||||
gst_amc_detach_current_thread ();
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
|
@ -1454,7 +1436,7 @@ scan_codecs (void)
|
|||
/* TODO: Cache this in the plugin and also cache
|
||||
* classes and method ids
|
||||
*/
|
||||
env = gst_amc_attach_current_thread ();
|
||||
env = gst_amc_get_jni_env ();
|
||||
|
||||
codec_list_class = (*env)->FindClass (env, "android/media/MediaCodecList");
|
||||
if (!codec_list_class) {
|
||||
|
|
@ -1857,8 +1839,6 @@ done:
|
|||
if (codec_list_class)
|
||||
(*env)->DeleteLocalRef (env, codec_list_class);
|
||||
|
||||
gst_amc_detach_current_thread ();
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
|
@ -2375,6 +2355,8 @@ plugin_init (GstPlugin * plugin)
|
|||
{
|
||||
GST_DEBUG_CATEGORY_INIT (gst_amc_debug, "amc", 0, "android-media-codec");
|
||||
|
||||
pthread_key_create (¤t_jni_env, gst_amc_detach_current_thread);
|
||||
|
||||
if (!initialize_java_vm ())
|
||||
return FALSE;
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue