support flutter gstreamer player for android

2022-08-25 10:46:24 +07:00
parent 0bc07eed97
commit d6034e51f8
41 changed files with 5263 additions and 20 deletions
@@ -0,0 +1,91 @@
+#include "gst_player.h"
+
+#include <string.h>
+#include <jni.h>
+#include <android/log.h>
+#include <android/native_window.h>
+#include <android/native_window_jni.h>
+
+#define LOG_TAG                       "flutter_gstreamer_player_plugin_android"
+#define ANATIVEWINDOW_BUFFER_FORMAT   AHARDWAREBUFFER_FORMAT_R8G8B8A8_UNORM
+
+static jint
+handle_player_register_texture(JNIEnv * env, jobject thiz, jstring pipeline, jint player_id, jobject surface) {
+  const char *pipelineString = env->GetStringUTFChars(pipeline, 0);
+
+  ANativeWindow *native_window = ANativeWindow_fromSurface (env, surface);
+
+  __android_log_print (ANDROID_LOG_INFO,
+      LOG_TAG,
+      "pipeline: %s, player_id: %d",
+      pipelineString,
+      player_id);
+
+  GstPlayer* gstPlayer = g_players->Get(player_id);
+
+  gstPlayer->onVideo([
+          native_window = native_window
+        ](
+          uint8_t* frame,
+          uint32_t size,
+          int32_t width,
+          int32_t height,
+          int32_t stride) -> void {
+      if (native_window != NULL) {
+        ANativeWindow_Buffer nativeBuffer;
+
+        if (ANativeWindow_lock(native_window, &nativeBuffer, NULL) == 0) {
+          if (nativeBuffer.width != width || nativeBuffer.height != height) {
+            ANativeWindow_unlockAndPost(native_window);
+            ANativeWindow_setBuffersGeometry(native_window,
+                width,
+                height,
+                ANATIVEWINDOW_BUFFER_FORMAT);
+            if (ANativeWindow_lock(native_window, &nativeBuffer, NULL) != 0) {
+              return;
+            }
+          }
+
+          uint32_t pixelSize = size / (width * height);
+          for (int h = 0; h < height; h++) {
+            memcpy((void*)((long)nativeBuffer.bits + h * nativeBuffer.stride * pixelSize),
+                frame + h*stride,
+                width * pixelSize);
+          }
+          ANativeWindow_unlockAndPost(native_window);
+        }
+      }
+    }
+  );
+
+  gstPlayer->play(pipelineString);
+
+  env->ReleaseStringUTFChars(pipeline, pipelineString);
+
+  return 0;
+}
+
+/* List of implemented native methods */
+static JNINativeMethod native_methods[] = {
+  {"handlePlayerRegisterTexture", "(Ljava/lang/String;ILjava/lang/Object;)I",
+      (void *) handle_player_register_texture},
+};
+
+/* Library initializer */
+jint
+JNI_OnLoad (JavaVM * vm, void *reserved)
+{
+  JNIEnv *env = NULL;
+
+  if (vm->GetEnv ((void **) &env, JNI_VERSION_1_4) != JNI_OK) {
+    __android_log_print (ANDROID_LOG_ERROR, LOG_TAG,
+        "Could not retrieve JNIEnv");
+    return 0;
+  }
+  jclass klass = env->FindClass (
+      "com/hpdragon1618/flutter_gstreamer_player/FlutterGstreamerPlayerPlugin");
+  env->RegisterNatives (klass, native_methods,
+      G_N_ELEMENTS (native_methods));
+
+  return JNI_VERSION_1_4;
+}