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/**
* xrdp: A Remote Desktop Protocol server.
*
* Copyright (C) Laxmikant Rashinkar 2012-2013 LK.Rashinkar@gmail.com
*
* 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.
*
* a program that uses xrdpapi and ffmpeg to redirect media streams
* to a FreeRDP client where it is decompressed and played locally
*
*/
#ifndef __XRDPVR_INTERNAL_H__
#define __XRDPVR_INTERNAL_H__
#include <stdint.h>
#include <sys/types.h>
#include <fcntl.h>
#include <libavcodec/avcodec.h>
#include <libavformat/avformat.h>
#if LIBAVCODEC_VERSION_MAJOR == 52 && LIBAVCODEC_VERSION_MINOR == 20
#define DISTRO_DEBIAN6
#endif
#if LIBAVCODEC_VERSION_MAJOR == 52 && LIBAVCODEC_VERSION_MINOR == 72
#define DISTRO_UBUNTU1104
#endif
#if LIBAVCODEC_VERSION_MAJOR == 53 && LIBAVCODEC_VERSION_MINOR == 35
#define DISTRO_UBUNTU1204
#endif
#if !defined(DISTRO_DEBIAN6) && !defined(DISTRO_UBUNTU1104) && !defined(DISTRO_UBUNTU1204)
#warning unsupported distro
#endif
#ifdef DISTRO_UBUNTU1204
#define CODEC_TYPE_VIDEO AVMEDIA_TYPE_VIDEO
#define CODEC_TYPE_AUDIO AVMEDIA_TYPE_AUDIO
#define PKT_FLAG_KEY AV_PKT_FLAG_KEY
#endif
#define MAX_BUFSIZE (1024 * 1024 * 8)
#define CMD_SET_VIDEO_FORMAT 1
#define CMD_SET_AUDIO_FORMAT 2
#define CMD_SEND_VIDEO_DATA 3
#define CMD_SEND_AUDIO_DATA 4
#define CMD_CREATE_META_DATA_FILE 5
#define CMD_CLOSE_META_DATA_FILE 6
#define CMD_WRITE_META_DATA 7
#define CMD_DEINIT_XRDPVR 8
#define CMD_SET_GEOMETRY 9
#define CMD_SET_VOLUME 10
#define CMD_INIT_XRDPVR 11
/* max number of bytes we can send in one pkt */
#define MAX_PDU_SIZE 1600
typedef uint8_t u8;
typedef uint16_t u16;
typedef uint32_t u32;
typedef struct stream
{
u8 *data;
u8 *p;
u32 size;
int from_buf;
} STREAM;
/**
* create and init a new stream
*
* @param _s stream to create and init
* @param _len number of bytes to store in stream
******************************************************************************/
#define stream_new(_s, _len) \
do \
{ \
(_s) = (STREAM *) calloc(1, sizeof(STREAM)); \
(_s)->data = (u8 *) calloc(1, (_len)); \
(_s)->p = (_s)->data; \
(_s)->size = (_len); \
(_s)->from_buf = 0; \
} while (0)
/**
* create a stream from an existing buffer
******************************************************************************/
#define stream_from_buffer(_s, _buf, _buf_len) \
do \
{ \
(_s) = (STREAM *) calloc(1, sizeof(STREAM)); \
(_s)->data = (u8 *) (_buf); \
(_s)->p = (_s)->data; \
(_s)->size = (_buf_len); \
(_s)->from_buf = 1; \
} while (0)
/**
* release stream resources, including stream itself
* note: release _s->data only if we allocated it
*
* @param _s the stream whose resources are to be released
******************************************************************************/
#define stream_free(_s) \
do \
{ \
if (!(_s)->from_buf) \
{ \
free((_s)->data); \
} \
free((_s)); \
(_s) = NULL; \
} while (0)
/** return number of bytes in stream */
#define stream_length(_s) (int) ((_s)->p - (_s)->data)
/** insert a 8 bit value into stream */
#define stream_ins_u8(_s, _val) \
do \
{ \
*(_s)->p++ = (unsigned char) (_val); \
} while(0)
/** insert a 16 bit value into stream */
#define stream_ins_u16_le(_s, _val) \
do \
{ \
*(_s)->p++ = (unsigned char) ((_val) >> 0); \
*(_s)->p++ = (unsigned char) ((_val) >> 8); \
} while (0)
/** insert a 32 bit value into stream */
#define stream_ins_u32_le(_s, _val) \
do \
{ \
*(_s)->p++ = (unsigned char) ((_val) >> 0); \
*(_s)->p++ = (unsigned char) ((_val) >> 8); \
*(_s)->p++ = (unsigned char) ((_val) >> 16); \
*(_s)->p++ = (unsigned char) ((_val) >> 24); \
} while (0)
/** insert a 64 bit value into stream */
#define stream_ins_u64_le(_s, _val) \
do \
{ \
*(_s)->p++ = (unsigned char) ((_val) >> 0); \
*(_s)->p++ = (unsigned char) ((_val) >> 8); \
*(_s)->p++ = (unsigned char) ((_val) >> 16); \
*(_s)->p++ = (unsigned char) ((_val) >> 24); \
*(_s)->p++ = (unsigned char) ((_val) >> 32); \
*(_s)->p++ = (unsigned char) ((_val) >> 40); \
*(_s)->p++ = (unsigned char) ((_val) >> 48); \
*(_s)->p++ = (unsigned char) ((_val) >> 56); \
} while (0)
/** insert array of chars into stream */
#define stream_ins_byte_array(_s, _ba, _count) \
do \
{ \
memcpy((_s)->p, (_ba), (_count)); \
(_s)->p += (_count); \
} while (0)
/** extract a 8 bit value from stream */
#define stream_ext_u8(_s, _v) \
do \
{ \
(_v) = (u8) *(_s)->p++; \
} while (0)
/** extract a 16 bit value from stream */
#define stream_ext_u16_le(_s, _v) \
do \
{ \
(_v) = (u16) ((_s)->p[1] << 8 | (_s)->p[0]); \
(_s)->p += 2; \
} while (0)
/** extract a 32 bit value from stream */
#define stream_ext_u32_le(_s, _v) \
do \
{ \
(_v) = (u32) ((_s)->p[3] << 24 | \
(_s)->p[2] << 16 | \
(_s)->p[1] << 8 | \
(_s)->p[0]); \
(_s)->p += 4; \
} while (0)
typedef struct _player_state_info
{
AVFormatContext *p_format_ctx;
AVCodecContext *p_audio_codec_ctx;
AVCodecContext *p_video_codec_ctx;
AVCodec *p_audio_codec;
AVCodec *p_video_codec;
int audio_stream_index;
int video_stream_index;
double audioTimeout;
double videoTimeout;
/* LK_TODO delete this after we fix the problem */
AVFrame *frame;
AVPacket avpkt;
AVBitStreamFilterContext *bsfc;
} PLAYER_STATE_INFO;
static int xrdpvr_read_from_client(void *channel, STREAM *s, int bytes, int timeout);
static int xrdpvr_write_to_client(void *channel, STREAM *s);
#endif /* __XRDPVR_INTERNAL_H__ */
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