stagefright: add SoftMPEG2 decoder using libmpeg2

ifeq ($(if $(wildcard external/libmpeg2),1,0),1)

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

LOCAL_MODULE            := libstagefright_soft_mpeg2dec

LOCAL_MODULE_TAGS       := optional

LOCAL_STATIC_LIBRARIES  := libmpeg2dec

LOCAL_SRC_FILES         := SoftMPEG2.cpp

LOCAL_C_INCLUDES := $(TOP)/external/libmpeg2/decoder

LOCAL_C_INCLUDES += $(TOP)/external/libmpeg2/common

LOCAL_C_INCLUDES += $(TOP)/frameworks/av/media/libstagefright/include

LOCAL_C_INCLUDES += $(TOP)/frameworks/native/include/media/openmax

LOCAL_SHARED_LIBRARIES  := libstagefright

LOCAL_SHARED_LIBRARIES  += libstagefright_omx

LOCAL_SHARED_LIBRARIES  += libstagefright_foundation

LOCAL_SHARED_LIBRARIES  += libutils

LOCAL_SHARED_LIBRARIES  += liblog

LOCAL_LDFLAGS := -Wl,-Bsymbolic

include $(BUILD_SHARED_LIBRARY)

endif

/*

 * Copyright 2015 The Android Open Source Project

 *

 * 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.

 */

#ifndef SOFT_MPEG2_H_

#define SOFT_MPEG2_H_

#include "SoftVideoDecoderOMXComponent.h"

#include <sys/time.h>

namespace android {

#define ivd_aligned_malloc(alignment, size) memalign(alignment, size)

#define ivd_aligned_free(buf) free(buf)

/** Number of entries in the time-stamp array */

#define MAX_TIME_STAMPS 64

/** Maximum number of cores supported by the codec */

#define CODEC_MAX_NUM_CORES 4

#define CODEC_MAX_WIDTH     1920

#define CODEC_MAX_HEIGHT    1088

/** Input buffer size */

#define INPUT_BUF_SIZE (1024 * 1024)

#define MIN(a, b) ((a) < (b)) ? (a) : (b)

/** Used to remove warnings about unused parameters */

#define UNUSED(x) ((void)(x))

/** Get time */

#define GETTIME(a, b) gettimeofday(a, b);

/** Compute difference between start and end */

#define TIME_DIFF(start, end, diff) \

    diff = ((end.tv_sec - start.tv_sec) * 1000000) + \

            (end.tv_usec - start.tv_usec);

struct SoftMPEG2 : public SoftVideoDecoderOMXComponent {

    SoftMPEG2(

            const char *name, const OMX_CALLBACKTYPE *callbacks,

            OMX_PTR appData, OMX_COMPONENTTYPE **component);

protected:

    virtual ~SoftMPEG2();

    virtual void onQueueFilled(OMX_U32 portIndex);

    virtual void onPortFlushCompleted(OMX_U32 portIndex);

    virtual void onReset();

    virtual OMX_ERRORTYPE internalSetParameter(OMX_INDEXTYPE index, const OMX_PTR params);

private:

    // Number of input and output buffers

    enum {

        kNumBuffers = 8

    };

    iv_obj_t *mCodecCtx;         // Codec context

    iv_mem_rec_t *mMemRecords;   // Memory records requested by the codec

    size_t mNumMemRecords;       // Number of memory records requested by the codec

    size_t mNumCores;            // Number of cores to be uesd by the codec

    struct timeval mTimeStart;   // Time at the start of decode()

    struct timeval mTimeEnd;     // Time at the end of decode()

    // Internal buffer to be used to flush out the buffers from decoder

    uint8_t *mFlushOutBuffer;

    // Status of entries in the timestamp array

    bool mTimeStampsValid[MAX_TIME_STAMPS];

    // Timestamp array - Since codec does not take 64 bit timestamps,

    // they are maintained in the plugin

    OMX_S64 mTimeStamps[MAX_TIME_STAMPS];

#ifdef FILE_DUMP_ENABLE

    char mInFile[200];

#endif /* FILE_DUMP_ENABLE */

    OMX_COLOR_FORMATTYPE mOmxColorFormat;    // OMX Color format

    IV_COLOR_FORMAT_T mIvColorFormat;        // Ittiam Color format

    bool mIsInFlush;        // codec is flush mode

    bool mReceivedEOS;      // EOS is receieved on input port

    bool mInitNeeded;

    uint32_t mNewWidth;

    uint32_t mNewHeight;

    // The input stream has changed to a different resolution, which is still supported by the

    // codec. So the codec is switching to decode the new resolution.

    bool mChangingResolution;

    bool mFlushNeeded;

    status_t initDecoder();

    status_t deInitDecoder();

    status_t setFlushMode();

    status_t setParams(size_t stride);

    void logVersion();

    status_t setNumCores();

    status_t resetDecoder();

    status_t resetPlugin();

    status_t reInitDecoder();

    void setDecodeArgs(

            ivd_video_decode_ip_t *ps_dec_ip,

            ivd_video_decode_op_t *ps_dec_op,

            OMX_BUFFERHEADERTYPE *inHeader,

            OMX_BUFFERHEADERTYPE *outHeader,

            size_t timeStampIx);

    DISALLOW_EVIL_CONSTRUCTORS(SoftMPEG2);

};

#ifdef FILE_DUMP_ENABLE

#define INPUT_DUMP_PATH     "/sdcard/media/mpeg2d_input"

#define INPUT_DUMP_EXT      "m2v"

#define GENERATE_FILE_NAMES() {                         \

    GETTIME(&mTimeStart, NULL);                         \

    strcpy(mInFile, "");                                \

    sprintf(mInFile, "%s_%ld.%ld.%s", INPUT_DUMP_PATH,  \

            mTimeStart.tv_sec, mTimeStart.tv_usec,      \

            INPUT_DUMP_EXT);                            \

}

#define CREATE_DUMP_FILE(m_filename) {                  \

    FILE *fp = fopen(m_filename, "wb");                 \

    if (fp != NULL) {                                   \

        fclose(fp);                                     \

    } else {                                            \

        ALOGD("Could not open file %s", m_filename);    \

    }                                                   \

}

#define DUMP_TO_FILE(m_filename, m_buf, m_size)         \

{                                                       \

    FILE *fp = fopen(m_filename, "ab");                 \

    if (fp != NULL && m_buf != NULL) {                  \

        int i;                                          \

        i = fwrite(m_buf, 1, m_size, fp);               \

        ALOGD("fwrite ret %d to write %d", i, m_size);  \

        if (i != (int)m_size) {                         \

            ALOGD("Error in fwrite, returned %d", i);   \

            perror("Error in write to file");           \

        }                                               \

        fclose(fp);                                     \

    } else {                                            \

        ALOGD("Could not write to file %s", m_filename);\

    }                                                   \

}

#else /* FILE_DUMP_ENABLE */

#define INPUT_DUMP_PATH

#define INPUT_DUMP_EXT

#define OUTPUT_DUMP_PATH

#define OUTPUT_DUMP_EXT

#define GENERATE_FILE_NAMES()

#define CREATE_DUMP_FILE(m_filename)

#define DUMP_TO_FILE(m_filename, m_buf, m_size)

#endif /* FILE_DUMP_ENABLE */

} // namespace android

#endif  // SOFT_MPEG2_H_

<Included>

    <Decoders>

        <MediaCodec name="OMX.google.mpeg2.decoder" type="video/mpeg2">

            <!-- profiles and levels:  ProfileMain : LevelHL -->

            <Limit name="size" min="16x16" max="1920x1088" />

            <Limit name="alignment" value="2x2" />

            <Limit name="block-size" value="16x16" />

            <Limit name="blocks-per-second" range="1-244800" />

            <Limit name="bitrate" range="1-20000000" />

            <Feature name="adaptive-playback" />

        </MediaCodec>

        <MediaCodec name="OMX.google.mpeg4.decoder" type="video/mp4v-es">

            <!-- profiles and levels:  ProfileSimple : Level3 -->

            <Limit name="size" min="2x2" max="352x288" />

    { "OMX.google.hevc.decoder", "hevcdec", "video_decoder.hevc" },

    { "OMX.google.g711.alaw.decoder", "g711dec", "audio_decoder.g711alaw" },

    { "OMX.google.g711.mlaw.decoder", "g711dec", "audio_decoder.g711mlaw" },

    { "OMX.google.mpeg2.decoder", "mpeg2dec", "video_decoder.mpeg2" },

    { "OMX.google.h263.decoder", "mpeg4dec", "video_decoder.h263" },

    { "OMX.google.h263.encoder", "mpeg4enc", "video_encoder.h263" },

    { "OMX.google.mpeg4.decoder", "mpeg4dec", "video_decoder.mpeg4" },