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/*
* Copyright (C) 2014 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.
*/
/*
* This file defines an NDK API.
* Do not remove methods.
* Do not change method signatures.
* Do not change the value of constants.
* Do not change the size of any of the classes defined in here.
* Do not reference types that are not part of the NDK.
* Do not #include files that aren't part of the NDK.
*/
#ifndef _NDK_MEDIA_CODEC_H
#define _NDK_MEDIA_CODEC_H
#include <android/native_window.h>
#include "NdkMediaFormat.h"
#ifdef __cplusplus
extern "C" {
#endif
struct AMediaCodec;
typedef struct AMediaCodec AMediaCodec;
struct AMediaCodecBufferInfo {
int32_t offset;
int32_t size;
int64_t presentationTimeUs;
uint32_t flags;
};
typedef struct AMediaCodecBufferInfo AMediaCodecBufferInfo;
enum {
AMEDIACODEC_BUFFER_FLAG_END_OF_STREAM = 4,
AMEDIACODEC_CONFIGURE_FLAG_ENCODE = 1,
AMEDIACODEC_INFO_OUTPUT_BUFFERS_CHANGED = -3,
AMEDIACODEC_INFO_OUTPUT_FORMAT_CHANGED = -2,
AMEDIACODEC_INFO_TRY_AGAIN_LATER = -1
};
/**
* Create codec by name. Use this if you know the exact codec you want to use.
* When configuring, you will need to specify whether to use the codec as an
* encoder or decoder.
*/
AMediaCodec* AMediaCodec_createCodecByName(const char *name);
/**
* Create codec by mime type. Most applications will use this, specifying a
* mime type obtained from media extractor.
*/
AMediaCodec* AMediaCodec_createDecoderByType(const char *mime_type);
/**
* Create encoder by name.
*/
AMediaCodec* AMediaCodec_createEncoderByType(const char *mime_type);
/**
* delete the codec and free its resources
*/
int AMediaCodec_delete(AMediaCodec*);
/**
* Configure the codec. For decoding you would typically get the format from an extractor.
*/
int AMediaCodec_configure(AMediaCodec*, const AMediaFormat* format,
ANativeWindow* surface, uint32_t flags); // TODO: other args
/**
* Start the codec. A codec must be configured before it can be started, and must be started
* before buffers can be sent to it.
*/
int AMediaCodec_start(AMediaCodec*);
/**
* Stop the codec.
*/
int AMediaCodec_stop(AMediaCodec*);
/*
* Flush the codec's input and output. All indices previously returned from calls to
* AMediaCodec_dequeueInputBuffer and AMediaCodec_dequeueOutputBuffer become invalid.
*/
int AMediaCodec_flush(AMediaCodec*);
/**
* Get an input buffer. The specified buffer index must have been previously obtained from
* dequeueInputBuffer, and not yet queued.
*/
uint8_t* AMediaCodec_getInputBuffer(AMediaCodec*, size_t idx, size_t *out_size);
/**
* Get an output buffer. The specified buffer index must have been previously obtained from
* dequeueOutputBuffer, and not yet queued.
*/
uint8_t* AMediaCodec_getOutputBuffer(AMediaCodec*, size_t idx, size_t *out_size);
/**
* Get the index of the next available input buffer. An app will typically use this with
* getInputBuffer() to get a pointer to the buffer, then copy the data to be encoded or decoded
* into the buffer before passing it to the codec.
*/
ssize_t AMediaCodec_dequeueInputBuffer(AMediaCodec*, int64_t timeoutUs);
/**
* Send the specified buffer to the codec for processing.
*/
int AMediaCodec_queueInputBuffer(AMediaCodec*,
size_t idx, off_t offset, size_t size, uint64_t time, uint32_t flags);
/**
* Get the index of the next available buffer of processed data.
*/
ssize_t AMediaCodec_dequeueOutputBuffer(AMediaCodec*, AMediaCodecBufferInfo *info, int64_t timeoutUs);
AMediaFormat* AMediaCodec_getOutputFormat(AMediaCodec*);
/**
* Release and optionally render the specified buffer.
*/
int AMediaCodec_releaseOutputBuffer(AMediaCodec*, size_t idx, bool render);
typedef void (*OnCodecEvent)(AMediaCodec *codec, void *userdata);
/**
* Set a callback to be called when a new buffer is available, or there was a format
* or buffer change.
* Note that you cannot perform any operations on the mediacodec from within the callback.
* If you need to perform mediacodec operations, you must do so on a different thread.
*/
int AMediaCodec_setNotificationCallback(AMediaCodec*, OnCodecEvent callback, void *userdata);
#ifdef __cplusplus
} // extern "C"
#endif
#endif //_NDK_MEDIA_CODEC_H
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