media/libmedia/IMediaRecorder.cpp

/*
 **
 ** Copyright 2008, HTC Inc.
 **
 ** Licensed under the Apache License, Version 2.0 (the "License");
 ** you may not use this file except in compliance with the License.
 ** You may obtain a copy of the License at
 **
 **     http://www.apache.org/licenses/LICENSE-2.0
 **
 ** Unless required by applicable law or agreed to in writing, software
 ** distributed under the License is distributed on an "AS IS" BASIS,
 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 ** See the License for the specific language governing permissions and
 ** limitations under the License.
 */

//#define LOG_NDEBUG 0
#define LOG_TAG "IMediaRecorder"
#include <utils/Log.h>
#include <utils/Parcel.h>
#include <ui/ISurface.h>
#include <ui/ICamera.h>
#include <media/IMediaRecorder.h>

namespace android {

enum {
    RELEASE = IBinder::FIRST_CALL_TRANSACTION,
    INIT,
    CLOSE,
    RESET,
    STOP,
    START,
    PREPARE,
    GET_MAX_AMPLITUDE,
    SET_VIDEO_SOURCE,
    SET_AUDIO_SOURCE,
    SET_OUTPUT_FORMAT,
    SET_VIDEO_ENCODER,
    SET_AUDIO_ENCODER,
    SET_OUTPUT_FILE,
    SET_VIDEO_SIZE,
    SET_VIDEO_FRAMERATE,
    SET_PREVIEW_SURFACE,
    SET_CAMERA
};

class BpMediaRecorder: public BpInterface<IMediaRecorder>
{
public:
    BpMediaRecorder(const sp<IBinder>& impl)
    : BpInterface<IMediaRecorder>(impl)
    {
    }

    status_t setCamera(const sp<ICamera>& camera)
    {
        LOGV("setCamera(%p)", camera.get());
        Parcel data, reply;
        data.writeInterfaceToken(IMediaRecorder::getInterfaceDescriptor());
        data.writeStrongBinder(camera->asBinder());
        remote()->transact(SET_CAMERA, data, &reply);
        return reply.readInt32();
    }

    status_t setPreviewSurface(const sp<ISurface>& surface)
    {
        LOGV("setPreviewSurface(%p)", surface.get());
        Parcel data, reply;
        data.writeInterfaceToken(IMediaRecorder::getInterfaceDescriptor());
        data.writeStrongBinder(surface->asBinder());
        remote()->transact(SET_PREVIEW_SURFACE, data, &reply);
        return reply.readInt32();
    }

    status_t init()
    {
        LOGV("init");
        Parcel data, reply;
        data.writeInterfaceToken(IMediaRecorder::getInterfaceDescriptor());
        remote()->transact(INIT, data, &reply);
        return reply.readInt32();
    }

    status_t setVideoSource(int vs)
    {
        LOGV("setVideoSource(%d)", vs);
        Parcel data, reply;
        data.writeInterfaceToken(IMediaRecorder::getInterfaceDescriptor());
        data.writeInt32(vs);
        remote()->transact(SET_VIDEO_SOURCE, data, &reply);
        return reply.readInt32();
    }

    status_t setAudioSource(int as)
    {
        LOGV("setAudioSource(%d)", as);
        Parcel data, reply;
        data.writeInterfaceToken(IMediaRecorder::getInterfaceDescriptor());
        data.writeInt32(as);
        remote()->transact(SET_AUDIO_SOURCE, data, &reply);
        return reply.readInt32();
    }

    status_t setOutputFormat(int of)
    {
        LOGV("setOutputFormat(%d)", of);
        Parcel data, reply;
        data.writeInterfaceToken(IMediaRecorder::getInterfaceDescriptor());
        data.writeInt32(of);
        remote()->transact(SET_OUTPUT_FORMAT, data, &reply);
        return reply.readInt32();
    }

    status_t setVideoEncoder(int ve)
    {
        LOGV("setVideoEncoder(%d)", ve);
        Parcel data, reply;
        data.writeInterfaceToken(IMediaRecorder::getInterfaceDescriptor());
        data.writeInt32(ve);
        remote()->transact(SET_VIDEO_ENCODER, data, &reply);
        return reply.readInt32();
    }

    status_t setAudioEncoder(int ae)
    {
        LOGV("setAudioEncoder(%d)", ae);
        Parcel data, reply;
        data.writeInterfaceToken(IMediaRecorder::getInterfaceDescriptor());
        data.writeInt32(ae);
        remote()->transact(SET_AUDIO_ENCODER, data, &reply);
        return reply.readInt32();
    }

    status_t setOutputFile(const char* path)
    {
        LOGV("setOutputFile(%s)", path);
        Parcel data, reply;
        data.writeInterfaceToken(IMediaRecorder::getInterfaceDescriptor());
        data.writeCString(path);
        remote()->transact(SET_OUTPUT_FILE, data, &reply);
        return reply.readInt32();
    }

    status_t setVideoSize(int width, int height)
    {
        LOGV("setVideoSize(%dx%d)", width, height);
        Parcel data, reply;
        data.writeInterfaceToken(IMediaRecorder::getInterfaceDescriptor());
        data.writeInt32(width);
        data.writeInt32(height);
        remote()->transact(SET_VIDEO_SIZE, data, &reply);
        return reply.readInt32();
    }

    status_t setVideoFrameRate(int frames_per_second)
    {
        LOGV("setVideoFrameRate(%d)", frames_per_second);
        Parcel data, reply;
        data.writeInterfaceToken(IMediaRecorder::getInterfaceDescriptor());
        data.writeInt32(frames_per_second);
        remote()->transact(SET_VIDEO_FRAMERATE, data, &reply);
        return reply.readInt32();
    }

    status_t prepare()
    {
        LOGV("prepare");
        Parcel data, reply;
        data.writeInterfaceToken(IMediaRecorder::getInterfaceDescriptor());
        remote()->transact(PREPARE, data, &reply);
        return reply.readInt32();
    }

    status_t getMaxAmplitude(int* max)
    {
        LOGV("getMaxAmplitude");
        Parcel data, reply;
        data.writeInterfaceToken(IMediaRecorder::getInterfaceDescriptor());
        remote()->transact(GET_MAX_AMPLITUDE, data, &reply);
        *max = reply.readInt32();
        return reply.readInt32();
    }

    status_t start()
    {
        LOGV("start");
        Parcel data, reply;
        data.writeInterfaceToken(IMediaRecorder::getInterfaceDescriptor());
        remote()->transact(START, data, &reply);
        return reply.readInt32();
    }

    status_t stop()
    {
        LOGV("stop");
        Parcel data, reply;
        data.writeInterfaceToken(IMediaRecorder::getInterfaceDescriptor());
        remote()->transact(STOP, data, &reply);
        return reply.readInt32();
    }

    status_t reset()
    {
        LOGV("reset");
        Parcel data, reply;
        data.writeInterfaceToken(IMediaRecorder::getInterfaceDescriptor());
        remote()->transact(RESET, data, &reply);
        return reply.readInt32();
    }

    status_t close()
    {
        LOGV("close");
        Parcel data, reply;
        data.writeInterfaceToken(IMediaRecorder::getInterfaceDescriptor());
        remote()->transact(CLOSE, data, &reply);
        return reply.readInt32();
    }

    status_t release()
    {
        LOGV("release");
        Parcel data, reply;
        data.writeInterfaceToken(IMediaRecorder::getInterfaceDescriptor());
        remote()->transact(RELEASE, data, &reply);
        return reply.readInt32();
    }
};

IMPLEMENT_META_INTERFACE(MediaRecorder, "android.hardware.IMediaRecorder");

// ----------------------------------------------------------------------

#define CHECK_INTERFACE(interface, data, reply) \
    do { if (!data.enforceInterface(interface::getInterfaceDescriptor())) { \
        LOGW("Call incorrectly routed to " #interface); \
        return PERMISSION_DENIED; \
    } } while (0)

status_t BnMediaRecorder::onTransact(
                                     uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
{
    switch(code) {
        case RELEASE: {
            LOGV("RELEASE");
            CHECK_INTERFACE(IMediaRecorder, data, reply);
            reply->writeInt32(release());
            return NO_ERROR;
        } break;
        case INIT: {
            LOGV("INIT");
            CHECK_INTERFACE(IMediaRecorder, data, reply);
            reply->writeInt32(init());
            return NO_ERROR;
        } break;
        case CLOSE: {
            LOGV("CLOSE");
            CHECK_INTERFACE(IMediaRecorder, data, reply);
            reply->writeInt32(close());
            return NO_ERROR;
        } break;
        case RESET: {
            LOGV("RESET");
            CHECK_INTERFACE(IMediaRecorder, data, reply);
            reply->writeInt32(reset());
            return NO_ERROR;
        } break;
        case STOP: {
            LOGV("STOP");
            CHECK_INTERFACE(IMediaRecorder, data, reply);
            reply->writeInt32(stop());
            return NO_ERROR;
        } break;
        case START: {
            LOGV("START");
            CHECK_INTERFACE(IMediaRecorder, data, reply);
            reply->writeInt32(start());
            return NO_ERROR;
        } break;
        case PREPARE: {
            LOGV("PREPARE");
            CHECK_INTERFACE(IMediaRecorder, data, reply);
            reply->writeInt32(prepare());
            return NO_ERROR;
        } break;
        case GET_MAX_AMPLITUDE: {
            LOGV("GET_MAX_AMPLITUDE");
            CHECK_INTERFACE(IMediaRecorder, data, reply);
            int max = 0;
            status_t ret = getMaxAmplitude(&max);
            reply->writeInt32(max);
            reply->writeInt32(ret);
            return NO_ERROR;
        } break;
        case SET_VIDEO_SOURCE: {
            LOGV("SET_VIDEO_SOURCE");
            CHECK_INTERFACE(IMediaRecorder, data, reply);
            int vs = data.readInt32();
            reply->writeInt32(setVideoSource(vs));
            return NO_ERROR;
        } break;
        case SET_AUDIO_SOURCE: {
            LOGV("SET_AUDIO_SOURCE");
            CHECK_INTERFACE(IMediaRecorder, data, reply);
            int as = data.readInt32();
            reply->writeInt32(setAudioSource(as));
            return NO_ERROR;
        } break;
        case SET_OUTPUT_FORMAT: {
            LOGV("SET_OUTPUT_FORMAT");
            CHECK_INTERFACE(IMediaRecorder, data, reply);
            int of = data.readInt32();
            reply->writeInt32(setOutputFormat(of));
            return NO_ERROR;
        } break;
        case SET_VIDEO_ENCODER: {
            LOGV("SET_VIDEO_ENCODER");
            CHECK_INTERFACE(IMediaRecorder, data, reply);
            int ve = data.readInt32();
            reply->writeInt32(setVideoEncoder(ve));
            return NO_ERROR;
        } break;
        case SET_AUDIO_ENCODER: {
            LOGV("SET_AUDIO_ENCODER");
            CHECK_INTERFACE(IMediaRecorder, data, reply);
            int ae = data.readInt32();
            reply->writeInt32(setAudioEncoder(ae));
            return NO_ERROR;

        } break;
        case SET_OUTPUT_FILE: {
            LOGV("SET_OUTPUT_FILE");
            CHECK_INTERFACE(IMediaRecorder, data, reply);
            const char* path = data.readCString();
            reply->writeInt32(setOutputFile(path));
            return NO_ERROR;
        } break;
        case SET_VIDEO_SIZE: {
            LOGV("SET_VIDEO_SIZE");
            CHECK_INTERFACE(IMediaRecorder, data, reply);
            int width = data.readInt32();
            int height = data.readInt32();
            reply->writeInt32(setVideoSize(width, height));
            return NO_ERROR;
        } break;
        case SET_VIDEO_FRAMERATE: {
            LOGV("SET_VIDEO_FRAMERATE");
            CHECK_INTERFACE(IMediaRecorder, data, reply);
            int frames_per_second = data.readInt32();
            reply->writeInt32(setVideoFrameRate(frames_per_second));
            return NO_ERROR;
        } break;
        case SET_PREVIEW_SURFACE: {
            LOGV("SET_PREVIEW_SURFACE");
            CHECK_INTERFACE(IMediaRecorder, data, reply);
            sp<ISurface> surface = interface_cast<ISurface>(data.readStrongBinder());
            reply->writeInt32(setPreviewSurface(surface));
            return NO_ERROR;
        } break;
        case SET_CAMERA: {
            LOGV("SET_CAMERA");
            CHECK_INTERFACE(IMediaRecorder, data, reply);
            sp<ICamera> camera = interface_cast<ICamera>(data.readStrongBinder());
            reply->writeInt32(setCamera(camera));
            return NO_ERROR;
        } break;
        default:
            return BBinder::onTransact(code, data, reply, flags);
    }
}

// ----------------------------------------------------------------------------

}; // namespace android