Android MediaCodecVideoDecoder: Manage lifetime of texture frames

talk/app/webrtc/java/jni/androidmediadecoder_jni.cc

 /*
  * libjingle
  * Copyright 2015 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *  1. Redistributions of source code must retain the above copyright notice,
  *     this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright notice,
@@ skipping 14 matching lines @@
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  */
 
 #include <vector>
 
 #include "talk/app/webrtc/java/jni/androidmediadecoder_jni.h"
 #include "talk/app/webrtc/java/jni/androidmediacodeccommon.h"
 #include "talk/app/webrtc/java/jni/classreferenceholder.h"
 #include "talk/app/webrtc/java/jni/native_handle_impl.h"
+#include "talk/app/webrtc/java/jni/surfacetexturehelper_jni.h"
 #include "webrtc/base/bind.h"
 #include "webrtc/base/checks.h"
 #include "webrtc/base/logging.h"
 #include "webrtc/base/scoped_ref_ptr.h"
 #include "webrtc/base/thread.h"
 #include "webrtc/base/timeutils.h"
 #include "webrtc/common_video/interface/i420_buffer_pool.h"
 #include "webrtc/modules/video_coding/codecs/interface/video_codec_interface.h"
 #include "webrtc/system_wrappers/interface/logcat_trace_context.h"
 #include "webrtc/system_wrappers/interface/tick_util.h"
@@ skipping 58 matching lines @@
 
   // Type of video codec.
   VideoCodecType codecType_;
 
   bool key_frame_required_;
   bool inited_;
   bool sw_fallback_required_;
   bool use_surface_;
   VideoCodec codec_;
   webrtc::I420BufferPool decoded_frame_pool_;
-  NativeHandleImpl native_handle_;
+  rtc::scoped_refptr<SurfaceTextureHelper> surface_texture_helper_;
   DecodedImageCallback* callback_;
   int frames_received_;  // Number of frames received by decoder.
   int frames_decoded_;  // Number of frames decoded by decoder.
   int64_t start_time_ms_;  // Start time for statistics.
   int current_frames_;  // Number of frames in the current statistics interval.
   int current_bytes_;  // Encoded bytes in the current statistics interval.
   int current_decoding_time_ms_;  // Overall decoding time in the current second
   uint32_t max_pending_frames_;  // Maximum number of pending input frames
   std::vector<int32_t> timestamps_;
   std::vector<int64_t> ntp_times_ms_;
@@ skipping 12 matching lines @@
   jmethodID j_dequeue_output_buffer_method_;
   jmethodID j_return_decoded_byte_buffer_method_;
   // MediaCodecVideoDecoder fields.
   jfieldID j_input_buffers_field_;
   jfieldID j_output_buffers_field_;
   jfieldID j_color_format_field_;
   jfieldID j_width_field_;
   jfieldID j_height_field_;
   jfieldID j_stride_field_;
   jfieldID j_slice_height_field_;
-  jfieldID j_surface_texture_field_;
   // MediaCodecVideoDecoder.DecodedTextureBuffer fields.
   jfieldID j_textureID_field_;
-  jfieldID j_texture_presentation_timestamp_us_field_;
+  jfieldID j_transform_matrix_field_;
+  jfieldID j_texture_timestamp_ns_field_;
   // MediaCodecVideoDecoder.DecodedByteBuffer fields.
   jfieldID j_info_index_field_;
   jfieldID j_info_offset_field_;
   jfieldID j_info_size_field_;
   jfieldID j_info_presentation_timestamp_us_field_;
 
   // Global references; must be deleted in Release().
   std::vector<jobject> input_buffers_;
-  jobject surface_texture_;
-  jobject previous_surface_texture_;
 
   // Render EGL context - owned by factory, should not be allocated/destroyed
   // by VideoDecoder.
   jobject render_egl_context_;
 };
 
 MediaCodecVideoDecoder::MediaCodecVideoDecoder(
     JNIEnv* jni, VideoCodecType codecType, jobject render_egl_context) :
     codecType_(codecType),
     render_egl_context_(render_egl_context),
     key_frame_required_(true),
     inited_(false),
     sw_fallback_required_(false),
-    surface_texture_(NULL),
-    previous_surface_texture_(NULL),
     codec_thread_(new Thread()),
     j_media_codec_video_decoder_class_(
         jni,
         FindClass(jni, "org/webrtc/MediaCodecVideoDecoder")),
           j_media_codec_video_decoder_(
               jni,
               jni->NewObject(*j_media_codec_video_decoder_class_,
                    GetMethodID(jni,
                               *j_media_codec_video_decoder_class_,
                               "<init>",
                               "()V"))) {
   ScopedLocalRefFrame local_ref_frame(jni);
   codec_thread_->SetName("MediaCodecVideoDecoder", NULL);
   RTC_CHECK(codec_thread_->Start()) << "Failed to start MediaCodecVideoDecoder";
 
   j_init_decode_method_ = GetMethodID(
       jni, *j_media_codec_video_decoder_class_, "initDecode",
       "(Lorg/webrtc/MediaCodecVideoDecoder$VideoCodecType;"
-      "IILandroid/opengl/EGLContext;)Z");
+      "IILorg/webrtc/SurfaceTextureHelper;)Z");
   j_release_method_ =
       GetMethodID(jni, *j_media_codec_video_decoder_class_, "release", "()V");
   j_dequeue_input_buffer_method_ = GetMethodID(
       jni, *j_media_codec_video_decoder_class_, "dequeueInputBuffer", "()I");
   j_queue_input_buffer_method_ = GetMethodID(
       jni, *j_media_codec_video_decoder_class_, "queueInputBuffer", "(IIJ)Z");
   j_dequeue_output_buffer_method_ = GetMethodID(
       jni, *j_media_codec_video_decoder_class_, "dequeueOutputBuffer",
       "(I)Ljava/lang/Object;");
   j_return_decoded_byte_buffer_method_ =
       GetMethodID(jni, *j_media_codec_video_decoder_class_,
                   "returnDecodedByteBuffer", "(I)V");
 
   j_input_buffers_field_ = GetFieldID(
       jni, *j_media_codec_video_decoder_class_,
       "inputBuffers", "[Ljava/nio/ByteBuffer;");
   j_output_buffers_field_ = GetFieldID(
       jni, *j_media_codec_video_decoder_class_,
       "outputBuffers", "[Ljava/nio/ByteBuffer;");
   j_color_format_field_ = GetFieldID(
       jni, *j_media_codec_video_decoder_class_, "colorFormat", "I");
   j_width_field_ = GetFieldID(
       jni, *j_media_codec_video_decoder_class_, "width", "I");
   j_height_field_ = GetFieldID(
       jni, *j_media_codec_video_decoder_class_, "height", "I");
   j_stride_field_ = GetFieldID(
       jni, *j_media_codec_video_decoder_class_, "stride", "I");
   j_slice_height_field_ = GetFieldID(
       jni, *j_media_codec_video_decoder_class_, "sliceHeight", "I");
-  j_surface_texture_field_ = GetFieldID(
-      jni, *j_media_codec_video_decoder_class_, "surfaceTexture",
-      "Landroid/graphics/SurfaceTexture;");
 
   jclass j_decoder_decoded_texture_buffer_class = FindClass(jni,
       "org/webrtc/MediaCodecVideoDecoder$DecodedTextureBuffer");
   j_textureID_field_ = GetFieldID(
       jni, j_decoder_decoded_texture_buffer_class, "textureID", "I");
-  j_texture_presentation_timestamp_us_field_ =
-      GetFieldID(jni, j_decoder_decoded_texture_buffer_class,
-                 "presentationTimestampUs", "J");
+  j_transform_matrix_field_ = GetFieldID(
+      jni, j_decoder_decoded_texture_buffer_class, "transformMatrix", "[F");
+  j_texture_timestamp_ns_field_ = GetFieldID(
+      jni, j_decoder_decoded_texture_buffer_class, "timestampNs", "J");
 
   jclass j_decoder_decoded_byte_buffer_class = FindClass(jni,
       "org/webrtc/MediaCodecVideoDecoder$DecodedByteBuffer");
   j_info_index_field_ = GetFieldID(
       jni, j_decoder_decoded_byte_buffer_class, "index", "I");
   j_info_offset_field_ = GetFieldID(
       jni, j_decoder_decoded_byte_buffer_class, "offset", "I");
   j_info_size_field_ = GetFieldID(
       jni, j_decoder_decoded_byte_buffer_class, "size", "I");
   j_info_presentation_timestamp_us_field_ = GetFieldID(
       jni, j_decoder_decoded_byte_buffer_class, "presentationTimestampUs", "J");
 
   CHECK_EXCEPTION(jni) << "MediaCodecVideoDecoder ctor failed";
   use_surface_ = (render_egl_context_ != NULL);
   ALOGD("MediaCodecVideoDecoder ctor. Use surface: %d", use_surface_);
   memset(&codec_, 0, sizeof(codec_));
   AllowBlockingCalls();
 }
 
 MediaCodecVideoDecoder::~MediaCodecVideoDecoder() {
   // Call Release() to ensure no more callbacks to us after we are deleted.
   Release();
-  // Delete global references.
-  JNIEnv* jni = AttachCurrentThreadIfNeeded();
-  if (previous_surface_texture_ != NULL) {
-    jni->DeleteGlobalRef(previous_surface_texture_);
-  }
-  if (surface_texture_ != NULL) {
-    jni->DeleteGlobalRef(surface_texture_);
-  }
 }
 
 int32_t MediaCodecVideoDecoder::InitDecode(const VideoCodec* inst,
     int32_t numberOfCores) {
   ALOGD("InitDecode.");
   if (inst == NULL) {
     ALOGE("NULL VideoCodec instance");
     return WEBRTC_VIDEO_CODEC_ERR_PARAMETER;
   }
   // Factory should guard against other codecs being used with us.
@@ skipping 29 matching lines @@
     ALOGE("Release failure: %d - fallback to SW codec", ret_val);
     sw_fallback_required_ = true;
     return WEBRTC_VIDEO_CODEC_ERROR;
   }
 
   // Always start with a complete key frame.
   key_frame_required_ = true;
   frames_received_ = 0;
   frames_decoded_ = 0;
 
+  if (use_surface_) {
+    surface_texture_helper_ = new rtc::RefCountedObject<SurfaceTextureHelper>(
+        jni, render_egl_context_);
+  }
+
   jobject j_video_codec_enum = JavaEnumFromIndex(
       jni, "MediaCodecVideoDecoder$VideoCodecType", codecType_);
   bool success = jni->CallBooleanMethod(
       *j_media_codec_video_decoder_,
       j_init_decode_method_,
       j_video_codec_enum,
       codec_.width,
       codec_.height,
-      use_surface_ ? render_egl_context_ : nullptr);
+      use_surface_ ? surface_texture_helper_->GetJavaSurfaceTextureHelper()
+                   : nullptr);
   if (CheckException(jni) || !success) {
     ALOGE("Codec initialization error - fallback to SW codec.");
     sw_fallback_required_ = true;
     return WEBRTC_VIDEO_CODEC_ERROR;
   }
   inited_ = true;
 
   switch (codecType_) {
     case kVideoCodecVP8:
       max_pending_frames_ = kMaxPendingFramesVp8;
@@ skipping 19 matching lines @@
   for (size_t i = 0; i < num_input_buffers; ++i) {
     input_buffers_[i] =
         jni->NewGlobalRef(jni->GetObjectArrayElement(input_buffers, i));
     if (CheckException(jni)) {
       ALOGE("NewGlobalRef error - fallback to SW codec.");
       sw_fallback_required_ = true;
       return WEBRTC_VIDEO_CODEC_ERROR;
     }
   }
 
-  if (use_surface_) {
-    jobject surface_texture = GetObjectField(
-        jni, *j_media_codec_video_decoder_, j_surface_texture_field_);
-    if (previous_surface_texture_ != NULL) {
-      jni->DeleteGlobalRef(previous_surface_texture_);
-    }
-    previous_surface_texture_ = surface_texture_;
-    surface_texture_ = jni->NewGlobalRef(surface_texture);
-  }
   codec_thread_->PostDelayed(kMediaCodecPollMs, this);
 
   return WEBRTC_VIDEO_CODEC_OK;
 }
 
 int32_t MediaCodecVideoDecoder::Release() {
   ALOGD("DecoderRelease request");
   return codec_thread_->Invoke<int32_t>(
         Bind(&MediaCodecVideoDecoder::ReleaseOnCodecThread, this));
 }
 
 int32_t MediaCodecVideoDecoder::ReleaseOnCodecThread() {
   if (!inited_) {
     return WEBRTC_VIDEO_CODEC_OK;
   }
   CheckOnCodecThread();
   JNIEnv* jni = AttachCurrentThreadIfNeeded();
   ALOGD("DecoderReleaseOnCodecThread: Frames received: %d.", frames_received_);
   ScopedLocalRefFrame local_ref_frame(jni);
   for (size_t i = 0; i < input_buffers_.size(); i++) {
     jni->DeleteGlobalRef(input_buffers_[i]);
   }
   input_buffers_.clear();
   jni->CallVoidMethod(*j_media_codec_video_decoder_, j_release_method_);
+  surface_texture_helper_ = nullptr;
   inited_ = false;
   rtc::MessageQueueManager::Clear(this);
   if (CheckException(jni)) {
     ALOGE("Decoder release exception");
     return WEBRTC_VIDEO_CODEC_ERROR;
   }
   return WEBRTC_VIDEO_CODEC_OK;
 }
 
 void MediaCodecVideoDecoder::CheckOnCodecThread() {
@@ skipping 88 matching lines @@
     const EncodedImage& inputImage) {
   CheckOnCodecThread();
   JNIEnv* jni = AttachCurrentThreadIfNeeded();
   ScopedLocalRefFrame local_ref_frame(jni);
 
   // Try to drain the decoder and wait until output is not too
   // much behind the input.
   if (frames_received_ > frames_decoded_ + max_pending_frames_) {
     ALOGV("Received: %d. Decoded: %d. Wait for output...",
         frames_received_, frames_decoded_);
-    if (!DeliverPendingOutputs(jni, kMediaCodecTimeoutMs * 1000)) {
+    if (!DeliverPendingOutputs(jni, kMediaCodecTimeoutMs)) {
       ALOGE("DeliverPendingOutputs error");
       return ProcessHWErrorOnCodecThread();
     }
     if (frames_received_ > frames_decoded_ + max_pending_frames_) {
       ALOGE("Output buffer dequeue timeout");
       return ProcessHWErrorOnCodecThread();
     }
   }
 
   // Get input buffer.
@@ skipping 42 matching lines @@
   // Try to drain the decoder
   if (!DeliverPendingOutputs(jni, 0)) {
     ALOGE("DeliverPendingOutputs error");
     return ProcessHWErrorOnCodecThread();
   }
 
   return WEBRTC_VIDEO_CODEC_OK;
 }
 
 bool MediaCodecVideoDecoder::DeliverPendingOutputs(
-    JNIEnv* jni, int dequeue_timeout_us) {
+    JNIEnv* jni, int dequeue_timeout_ms) {
   if (frames_received_ <= frames_decoded_) {
     // No need to query for output buffers - decoder is drained.
     return true;
   }
   // Get decoder output.
   jobject j_decoder_output_buffer = jni->CallObjectMethod(
       *j_media_codec_video_decoder_,
       j_dequeue_output_buffer_method_,
-      dequeue_timeout_us);
+      dequeue_timeout_ms);
   if (CheckException(jni)) {
     ALOGE("dequeueOutputBuffer() error");
     return false;
   }
   if (IsNull(jni, j_decoder_output_buffer)) {
     // No decoded frame ready.
     return true;
   }
 
   // Get decoded video frame properties.
   int color_format = GetIntField(jni, *j_media_codec_video_decoder_,
       j_color_format_field_);
   int width = GetIntField(jni, *j_media_codec_video_decoder_, j_width_field_);
   int height = GetIntField(jni, *j_media_codec_video_decoder_, j_height_field_);
   int stride = GetIntField(jni, *j_media_codec_video_decoder_, j_stride_field_);
   int slice_height = GetIntField(jni, *j_media_codec_video_decoder_,
       j_slice_height_field_);
 
   rtc::scoped_refptr<webrtc::VideoFrameBuffer> frame_buffer;
   long output_timestamps_ms = 0;
   if (use_surface_) {
     // Extract data from Java DecodedTextureBuffer.
     const int texture_id =
         GetIntField(jni, j_decoder_output_buffer, j_textureID_field_);
-    const int64_t timestamp_us =
-        GetLongField(jni, j_decoder_output_buffer,
-                     j_texture_presentation_timestamp_us_field_);
-    output_timestamps_ms = timestamp_us / rtc::kNumMicrosecsPerMillisec;
+    const jfloatArray j_transform_matrix =
+        reinterpret_cast<jfloatArray>(GetObjectField(
+            jni, j_decoder_output_buffer, j_transform_matrix_field_));
+    const int64_t timestamp_ns = GetLongField(jni, j_decoder_output_buffer,
+                                              j_texture_timestamp_ns_field_);
+    output_timestamps_ms = timestamp_ns / rtc::kNumNanosecsPerMillisec;
     // Create webrtc::VideoFrameBuffer with native texture handle.
-    native_handle_.SetTextureObject(surface_texture_, texture_id);
-    frame_buffer = new rtc::RefCountedObject<JniNativeHandleBuffer>(
-        &native_handle_, width, height);
+    frame_buffer = surface_texture_helper_->CreateTextureFrame(
+        width, height, NativeHandleImpl(jni, texture_id, j_transform_matrix));
   } else {
     // Extract data from Java ByteBuffer and create output yuv420 frame -
     // for non surface decoding only.
     const int output_buffer_index =
         GetIntField(jni, j_decoder_output_buffer, j_info_index_field_);
     const int output_buffer_offset =
         GetIntField(jni, j_decoder_output_buffer, j_info_offset_field_);
     const int output_buffer_size =
         GetIntField(jni, j_decoder_output_buffer, j_info_size_field_);
     const int64_t timestamp_us = GetLongField(
@@ skipping 223 matching lines @@
   return NULL;
 }
 
 void MediaCodecVideoDecoderFactory::DestroyVideoDecoder(
     webrtc::VideoDecoder* decoder) {
   delete decoder;
 }
 
 }  // namespace webrtc_jni