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Use the buffer's free_func to map byteArray data without making a copy

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This commit is contained in:
Youness Alaoui 2012-10-17 19:42:59 -04:00 committed by Nicolas Dufresne
parent af47c1ebdc
commit 4cbfe6fa13
1 changed files with 34 additions and 6 deletions
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40
sys/androidcamera/gstahcsrc.c
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@ -385,11 +385,33 @@ gst_ahc_src_unlock_stop (GstBaseSrc * bsrc)
return TRUE; return TRUE;
} }
typedef struct {
GstAHCSrc *self;
jbyteArray array;
jbyte *data;
} FreeFuncBuffer;
static void
gst_ahc_src_buffer_free_func (gpointer priv)
{
FreeFuncBuffer *data = (FreeFuncBuffer *) priv;
GstAHCSrc *self = data->self;
JNIEnv *env = gst_dvm_get_env ();
(*env)->ReleaseByteArrayElements(env, data->array, data->data, JNI_ABORT);
if (self->camera)
gst_ah_camera_add_callback_buffer (self->camera, data->array);
(*env)->DeleteGlobalRef (env, data->array);
g_slice_free (FreeFuncBuffer, data);
}
static GstFlowReturn static GstFlowReturn
gst_ahc_src_create (GstPushSrc * src, GstBuffer ** buffer) gst_ahc_src_create (GstPushSrc * src, GstBuffer ** buffer)
{ {
GstAHCSrc *self = GST_AHC_SRC (src); GstAHCSrc *self = GST_AHC_SRC (src);
JNIEnv *env = gst_dvm_get_env (); JNIEnv *env = gst_dvm_get_env ();
FreeFuncBuffer *user_data;
jbyteArray data = NULL; jbyteArray data = NULL;
while (data == NULL) { while (data == NULL) {
@ -398,13 +420,19 @@ gst_ahc_src_create (GstPushSrc * src, GstBuffer ** buffer)
return GST_FLOW_WRONG_STATE; return GST_FLOW_WRONG_STATE;
} }
*buffer = gst_buffer_new_and_alloc (self->buffer_size); //GST_WARNING_OBJECT (self, "Received data buffer %p", data);
(*env)->GetByteArrayRegion (env, data, 0, self->buffer_size,
(jbyte *) GST_BUFFER_DATA (*buffer));
gst_buffer_set_caps (*buffer, self->caps);
gst_ah_camera_add_callback_buffer (self->camera, data); user_data = g_slice_new0 (FreeFuncBuffer);
(*env)->DeleteGlobalRef (env, data); user_data->self = self;
user_data->array = data;
user_data->data = (*env)->GetByteArrayElements (env, data, NULL);
*buffer = gst_buffer_new ();
GST_BUFFER_DATA (*buffer) = (guint8 *) user_data->data;
GST_BUFFER_SIZE (*buffer) = self->buffer_size;
GST_BUFFER_MALLOCDATA (*buffer) = (gpointer) user_data;
GST_BUFFER_FREE_FUNC (*buffer) = gst_ahc_src_buffer_free_func;
gst_buffer_set_caps (*buffer, self->caps);
return GST_FLOW_OK; return GST_FLOW_OK;
} }