#include <stdint.h>

#include <libavcodec/avcodec.h>
#include <libavformat/avformat.h>
#include <libavdevice/avdevice.h>
#include <libswscale/swscale.h>

#include <stdio.h>
#include <string.h>
#include <fcntl.h>
#include <ctype.h>
#include "../winlib/winlib.h"

#include "sound.h"
#include "fplay.h"

volatile enum player_state player_state;

uint32_t win_width, win_height;

void decoder();

AVFormatContext *pFormatCtx;
AVCodecContext  *pCodecCtx;
AVCodecContext  *aCodecCtx;
AVCodec         *pCodec;
AVCodec         *aCodec;
AVFrame         *pFrame;
int             videoStream;
int             audioStream;

int             have_sound = 0;

uint8_t     *decoder_buffer;
extern int sample_rate;
char *movie_file;


queue_t  q_video;
queue_t  q_audio;

int main( int argc, char *argv[])
{
    int i;

    if(argc < 2) {
        printf("Please provide a movie file\n");
        return -1;
    }

    movie_file = argv[1];
    /* register all codecs, demux and protocols */

//    av_log_set_level(AV_LOG_INFO);

    avcodec_register_all();
    avdevice_register_all();
    av_register_all();

    if( avformat_open_input(&pFormatCtx, argv[1], NULL, NULL) < 0)
    {
        printf("Cannot open file %s\n\r", argv[1]);
        return -1; // Couldn't open file
    };

//    printf("%s\n\r", __FUNCTION__);

  // Retrieve stream information
    if(avformat_find_stream_info(pFormatCtx, NULL)<0)
    {
        printf("Cannot find streams\n\r");
        return -1;
    };

//    __asm__ __volatile__("int3");

//  dump_format(pFormatCtx, 0, argv[1], 0);

   // Find the first video stream
    videoStream=-1;
    audioStream=-1;
    for(i=0; i < pFormatCtx->nb_streams; i++)
    {
        if(pFormatCtx->streams[i]->codec->codec_type==AVMEDIA_TYPE_VIDEO
            && videoStream < 0)
        {
            videoStream=i;
            video_time_base = pFormatCtx->streams[i]->time_base;

        }
        if(pFormatCtx->streams[i]->codec->codec_type==AVMEDIA_TYPE_AUDIO &&
            audioStream < 0)
        {
            audioStream=i;
        }
    }

    if(videoStream==-1)
    {
        printf("Video stream not detected\n\r");
        return -1; // Didn't find a video stream
    }

    player_state = PLAY_RESTART;

 //   __asm__ __volatile__("int3");

    // Get a pointer to the codec context for the video stream
    pCodecCtx=pFormatCtx->streams[videoStream]->codec;
    aCodecCtx=pFormatCtx->streams[audioStream]->codec;

  // Find the decoder for the video stream
    pCodec=avcodec_find_decoder(pCodecCtx->codec_id);
    if(pCodec==NULL) {
        printf("Unsupported codec with id %d for input stream %d\n",
        pCodecCtx->codec_id, videoStream);
        return -1; // Codec not found
    }

    if(avcodec_open2(pCodecCtx, pCodec, NULL) < 0)
    {
        printf("Error while opening codec for input stream %d\n",
                videoStream);
        return -1; // Could not open codec
    };

    if (aCodecCtx->channels > 0)
            aCodecCtx->request_channels = FFMIN(2, aCodecCtx->channels);
    else
            aCodecCtx->request_channels = 2;

    aCodec = avcodec_find_decoder(aCodecCtx->codec_id);

    if(aCodec)
    {
        if(avcodec_open2(aCodecCtx, aCodec, NULL) >= 0 )
        {
            WAVEHEADER       whdr;
            int fmt;

            printf("audio stream rate %d channels %d\n",
            aCodecCtx->sample_rate, aCodecCtx->channels);

            whdr.riff_id = 0x46464952;
            whdr.riff_format = 0x45564157;
            whdr.wFormatTag = 0x01;
            whdr.nSamplesPerSec = aCodecCtx->sample_rate;
            whdr.nChannels = aCodecCtx->channels;
            whdr.wBitsPerSample = 16;

            sample_rate = aCodecCtx->sample_rate;

            fmt = test_wav(&whdr);

            if( init_audio(fmt) )
            {
                decoder_buffer = (uint8_t*)av_mallocz(AVCODEC_MAX_AUDIO_FRAME_SIZE*2+64);
                if( decoder_buffer != NULL )
                {
                    astream.lock   = 0;
                    astream.count  = 0;
                    astream.buffer = (char *)av_mallocz(AVCODEC_MAX_AUDIO_FRAME_SIZE*8);
                    if( astream.buffer != NULL )
                        have_sound = 1;
                    else
                        av_free(decoder_buffer);
                }
                if( have_sound == 0)
                {
                        printf("Not enough memory for audio buffers\n");
                }
            }
        }
        else printf("Cannot open audio codec\n\r");
    }
    else printf("Unsupported audio codec!\n");

    if( !init_video(pCodecCtx))
        return 0;

//    __asm__ __volatile__("int3");

    decoder();

  // Free the YUV frame
    av_free(pFrame);


//__asm__ __volatile__("int3");

  // Close the codec
 // avcodec_close(pCodecCtx);

  // Close the video file
 // av_close_input_file(pFormatCtx);

//__asm__ __volatile__("int3");

    return 0;
}

void decoder()
{
    int       eof = 0;
    AVPacket  packet;
    int       ret;

    while( player_state != CLOSED && !eof)
    {
        int err;

//        __asm__ __volatile__("int3");

        if( player_state == PAUSE )
        {
            delay(1);
            continue;
        };

        if(q_video.size+q_audio.size < 12*1024*1024)
        {
            err = av_read_frame(pFormatCtx, &packet);
            if( err < 0)
            {
                eof = 1;
                if (err != AVERROR_EOF)
                    printf("av_read_frame: error %x\n", err);
                continue;
            }
            if(packet.stream_index==videoStream)
            {
                put_packet(&q_video, &packet);
            }
            else if( (packet.stream_index == audioStream) &&
                 (have_sound != 0) )
            {
                put_packet(&q_audio, &packet);
            }
            else
            {
                av_free_packet(&packet);
            };
            decode_video(pCodecCtx, &q_video);
            decode_audio(aCodecCtx, &q_audio);
            continue;
        };
        decode_video(pCodecCtx, &q_video);
        decode_audio(aCodecCtx, &q_audio);
        delay(1);
    };

    ret = 1;

    while( (player_state != CLOSED) && ret)
    {
        ret =  decode_video(pCodecCtx, &q_video);
        ret |= decode_audio(aCodecCtx, &q_audio);
        delay(1);
    };
    delay(50);
    player_state = CLOSED;
    delay(300);
};