FFmpeg实战之利用ffplay实现自定义输入流播放

FILE* file;
static int avio_read(ACPlay play, uint8_t* buf, int bufsize)
{
    return fread(buf, 1, bufsize, file);
}
static int64_t avio_seek(ACPlay play, int64_t offset, int whence)
{
    switch (whence)
    {
    case AVSEEK_SIZE:
        return fileSize;
        break;
    case SEEK_CUR:
        fseek(file, offset, whence);
        break;
    case SEEK_SET:
        fseek(file, offset, whence);
        break;
    case SEEK_END:
        fseek(file, offset, whence);
        break;
    default:
        break;
    }
    return  ftell(test3file);
}

AVFormatContext* ic = NULL;
AVIOContext* avio = avio_alloc_context((unsigned char*)av_malloc(1024 * 1024), 1024 * 1024, 0, s, avio_read, NULL, avio_seek);
if (avio)
{
    ic->pb = avio;
    ic->flags = AVFMT_FLAG_CUSTOM_IO;
}
avformat_open_input(&ic, "", NULL, NULL);

if (ic->avio)
{
    if (ic->avio->buffer)
    {
        av_free(is->avio->buffer);
    }
    avio_context_free(&is->avio);
    ic->avio = NULL;
}

AVIOContext* avio;

/// <summary>
/// 开始播放
/// </summary>
/// <param name="play">播放器对象</param>
/// <param name="read">自定义输入流，读取数据时的回调</param>
/// <param name="seek">自定义输入流，定位时的回调</param>
void ac_play_startViaCustomStream(ACPlay play, ACPlayCustomPacketReadCallback read, ACPlayCustomPacketStreamSeekCallback seek);
{
    VideoState* s = (VideoState*)play;
    if(read)
    s->avio = avio_alloc_context((unsigned char*)av_malloc(1024 * 1024), 1024 * 1024, 0, s, read, NULL, seek);
    stream_open(s, "", NULL);
}

if (is->avio)
{
    ic->pb = is->avio;
    ic->flags = AVFMT_FLAG_CUSTOM_IO;
}

if (ic->avio)
{
    if (ic->avio->buffer)
    {
        av_free(is->avio->buffer);
    }
    avio_context_free(&is->avio);
    ic->avio = NULL;
}