api/android/jni/androidmediacodeccommon.h

/*
 *  Copyright 2015 The WebRTC project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

#ifndef WEBRTC_API_JAVA_JNI_ANDROIDMEDIACODECCOMMON_H_
#define WEBRTC_API_JAVA_JNI_ANDROIDMEDIACODECCOMMON_H_

#include <android/log.h>
#include <string>

#include "webrtc/base/thread.h"
#include "webrtc/api/android/jni/classreferenceholder.h"
#include "webrtc/api/android/jni/jni_helpers.h"
#include "webrtc/base/logging.h"
#include "webrtc/base/thread.h"

namespace webrtc_jni {

// Uncomment this define to enable verbose logging for every encoded/decoded
// video frame.
//#define TRACK_BUFFER_TIMING

#define TAG_COMMON "MediaCodecVideo"

// Color formats supported by encoder - should mirror supportedColorList
// from MediaCodecVideoEncoder.java
enum COLOR_FORMATTYPE {
  COLOR_FormatYUV420Planar = 0x13,
  COLOR_FormatYUV420SemiPlanar = 0x15,
  COLOR_QCOM_FormatYUV420SemiPlanar = 0x7FA30C00,
  // NV12 color format supported by QCOM codec, but not declared in MediaCodec -
  // see /hardware/qcom/media/mm-core/inc/OMX_QCOMExtns.h
  // This format is presumably similar to COLOR_FormatYUV420SemiPlanar,
  // but requires some (16, 32?) byte alignment.
  COLOR_QCOM_FORMATYUV420PackedSemiPlanar32m = 0x7FA30C04
};

// Arbitrary interval to poll the codec for new outputs.
enum { kMediaCodecPollMs = 10 };
// Arbitrary interval to poll at when there should be no more frames.
enum { kMediaCodecPollNoFramesMs = 100 };
// Media codec maximum output buffer ready timeout.
enum { kMediaCodecTimeoutMs = 1000 };
// Interval to print codec statistics (bitrate, fps, encoding/decoding time).
enum { kMediaCodecStatisticsIntervalMs = 3000 };
// Maximum amount of pending frames for VP8 decoder.
enum { kMaxPendingFramesVp8 = 1 };
// Maximum amount of pending frames for VP9 decoder.
enum { kMaxPendingFramesVp9 = 1 };
// Maximum amount of pending frames for H.264 decoder.
enum { kMaxPendingFramesH264 = 3 };
// Maximum amount of decoded frames for which per-frame logging is enabled.
enum { kMaxDecodedLogFrames = 10 };
// Maximum amount of encoded frames for which per-frame logging is enabled.
enum { kMaxEncodedLogFrames = 10 };

static inline void AllowBlockingCalls() {
  rtc::Thread* current_thread = rtc::Thread::Current();
  if (current_thread != NULL)
    current_thread->SetAllowBlockingCalls(true);
}

// Return the (singleton) Java Enum object corresponding to |index|;
// |state_class_fragment| is something like "MediaSource$State".
static inline jobject JavaEnumFromIndexAndClassName(
    JNIEnv* jni, const std::string& state_class_fragment, int index) {
  const std::string state_class = "org/webrtc/" + state_class_fragment;
  return JavaEnumFromIndex(jni, FindClass(jni, state_class.c_str()),
                           state_class, index);
}

// Checks for any Java exception, prints stack backtrace and clears
// currently thrown exception.
static inline bool CheckException(JNIEnv* jni) {
  if (jni->ExceptionCheck()) {
    LOG_TAG(rtc::LS_ERROR, TAG_COMMON) << "Java JNI exception.";
    jni->ExceptionDescribe();
    jni->ExceptionClear();
    return true;
  }
  return false;
}

}  // namespace webrtc_jni

#endif  // WEBRTC_API_JAVA_JNI_ANDROIDMEDIACODECCOMMON_H_