private int queue_page(Xiph.ogg_page page)
{
if (this.theora_p != 0)
{
Xiph.ogg_stream_pagein(this.to, page);
}
return(0);
}
private void open_video()
{
this.width = (int)this.ti.frame_width;
this.height = (int)this.ti.frame_height;
Xiph.th_stripe_callback stripe_callback;
stripe_callback.ctx = null;
stripe_callback.stripe_decoded = new Xiph.th_stripe_decoded_func(this.stripe_decoded);
Xiph.th_decode_ctl_opts th_decode_ctl_opts = new Xiph.th_decode_ctl_opts();
th_decode_ctl_opts.stripe_callback = stripe_callback;
Xiph.th_decode_ctl(this.td, 7, th_decode_ctl_opts);
}
private int buffer_data(Stream sin, Xiph.ogg_sync_state oy)
{
int num = 0;
byte[] buffer = null;
int offset = 0;
lock (sin)
{
if (Xiph.ogg_sync_buffer(oy, 4096, out buffer, out offset))
{
sin.Position = this.instream_pos;
num = sin.Read(buffer, offset, 4096);
Xiph.ogg_sync_wrote(oy, num);
this.instream_pos = sin.Position;
}
}
return(num);
}
public void InBackground()
{
if (!this.loaded && this.instream != null)
{
this.LoadVideo();
}
if (!this.control_.Ready)
{
return;
}
if (!this.control_.Play)
{
return;
}
if (this.rnd_frame != this.rdy_frame)
{
if (this.cur_frame == this.rdy_frame)
{
if (!this.skip)
{
Color32[] array = this.colors_y_rnd;
this.colors_y_rnd = this.colors_y;
this.colors_y = array;
}
this.rdy_frame = this.rnd_frame;
this.skip = true;
}
return;
}
while (this.theora_p != 0 && this.videobuf_ready == 0)
{
if (Xiph.ogg_stream_packetout(this.to, this.op) <= 0)
{
break;
}
if (Xiph.th_decode_packetin(this.td, this.op, ref this.videobuf_granulepos) >= 0)
{
this.videobuf_time = Xiph.th_granule_time(this.td.state, this.videobuf_granulepos);
this.videobuf_ready = 1;
}
}
if (this.videobuf_ready == 0 && this.instream.Length == this.instream_pos)
{
if (this.control_.Loop)
{
this.control_.PlaySession += 1u;
this.LoadVideo();
}
else
{
this.control_.Playing = false;
}
return;
}
if (this.videobuf_ready == 0)
{
this.buffer_data(this.instream, this.oy);
while (Xiph.ogg_sync_pageout(this.oy, this.og) > 0)
{
this.queue_page(this.og);
}
}
else
{
this.rnd_frame++;
if (this.cur_frame == this.rdy_frame)
{
if (!this.skip)
{
Color32[] array2 = this.colors_y_rnd;
this.colors_y_rnd = this.colors_y;
this.colors_y = array2;
}
this.rdy_frame = this.rnd_frame;
this.skip = true;
}
}
this.videobuf_ready = 0;
}
private bool LoadVideo()
{
this.op = new Xiph.ogg_packet();
this.og = new Xiph.ogg_page();
this.to = new Xiph.ogg_stream_state();
this.oy = new Xiph.ogg_sync_state();
this.ti = default(Xiph.th_info);
this.tc = new Xiph.th_comment();
this.ts = null;
this.fps = 0f;
this.frame_in_sec = 0f;
this.instream_pos = 0L;
this.stateflag = 0;
this.theora_p = 0;
this.theora_processing_headers = 0;
this.videobuf_time = 0.0;
this.videobuf_ready = 0;
this.videobuf_granulepos = -1L;
this.rnd_frame = -1;
this.rdy_frame = -1;
this.cur_frame = -1;
this.elapsedTimeSamples.Clear();
this.elapsedTimeTimestamps.Clear();
Xiph.ogg_sync_init(this.oy);
Xiph.th_comment_init(this.tc);
Xiph.th_info_init(ref this.ti);
while (this.stateflag == 0)
{
if (this.buffer_data(this.instream, this.oy) == 0)
{
break;
}
while (Xiph.ogg_sync_pageout(this.oy, this.og) > 0)
{
Xiph.ogg_stream_state os = new Xiph.ogg_stream_state();
if (Xiph.ogg_page_bos(this.og) == 0)
{
this.queue_page(this.og);
this.stateflag = 1;
break;
}
Xiph.ogg_stream_init(os, Xiph.ogg_page_serialno(this.og));
Xiph.ogg_stream_pagein(os, this.og);
int num = Xiph.ogg_stream_packetpeek(os, this.op);
if (num == 1 && this.theora_p == 0 && (this.theora_processing_headers = Xiph.th_decode_headerin(ref this.ti, this.tc, ref this.ts, this.op)) >= 0)
{
this.to = Xiph.ogg_stream_clone(os);
this.theora_p = 1;
if (this.theora_processing_headers != 0)
{
Xiph.ogg_stream_packetout(this.to, null);
}
}
else
{
Xiph.ogg_stream_clear(os);
}
}
}
while (this.theora_p != 0 && this.theora_processing_headers != 0)
{
int num2;
while (this.theora_processing_headers != 0 && (num2 = Xiph.ogg_stream_packetpeek(this.to, this.op)) != 0)
{
if (num2 >= 0)
{
this.theora_processing_headers = Xiph.th_decode_headerin(ref this.ti, this.tc, ref this.ts, this.op);
if (this.theora_processing_headers < 0)
{
this.error = "Error parsing Theora stream headers; corrupt stream?\n";
return(false);
}
if (this.theora_processing_headers > 0)
{
Xiph.ogg_stream_packetout(this.to, null);
}
this.theora_p++;
}
}
if (this.theora_p == 0 || this.theora_processing_headers == 0)
{
break;
}
if (Xiph.ogg_sync_pageout(this.oy, this.og) > 0)
{
this.queue_page(this.og);
}
else if (this.buffer_data(this.instream, this.oy) == 0)
{
this.error = "End of file while searching for codec headers.\n";
return(false);
}
}
if (this.theora_p != 0)
{
this.dump_comments(this.tc);
this.td = Xiph.th_decode_alloc(this.ti, this.ts);
this.info = string.Format("Ogg logical stream {0} is Theora {1}x{2} {3} fps video\nEncoded frame content is {4}x{5} with {6}x{7} offset\n", new object[]
{
this.to.serialno,
this.ti.frame_width,
this.ti.frame_height,
this.ti.fps_numerator / this.ti.fps_denominator,
this.ti.pic_width,
this.ti.pic_height,
this.ti.pic_x,
this.ti.pic_y
});
this.fps = this.ti.fps_numerator / this.ti.fps_denominator;
this.frame_in_sec = 1f / this.fps;
}
else
{
Xiph.th_info_clear(ref this.ti);
Xiph.th_comment_clear(this.tc);
}
Xiph.th_setup_free(this.ts);
if (this.theora_p != 0)
{
this.open_video();
}
this.stateflag = 0;
while (Xiph.ogg_sync_pageout(this.oy, this.og) > 0)
{
this.queue_page(this.og);
}
this.colors_y_1 = new Color32[this.width * this.height];
this.colors_y_2 = new Color32[this.width * this.height];
this.colors_y = this.colors_y_1;
this.colors_y_rnd = this.colors_y_2;
while (this.theora_p != 0 && this.videobuf_ready == 0)
{
if (Xiph.ogg_stream_packetout(this.to, this.op) <= 0)
{
break;
}
if (Xiph.th_decode_packetin(this.td, this.op, ref this.videobuf_granulepos) >= 0)
{
this.videobuf_time = Xiph.th_granule_time(this.td.state, this.videobuf_granulepos);
this.videobuf_ready = 1;
}
}
this.loaded = true;
return(true);
}
public void InBackground()
{
if (this.instream == null)
{
return;
}
if (this.playSession != this.control_.PlaySession)
{
this.playSession = this.control_.PlaySession;
this.Pcm = null;
this.control_.Pcm = this.Pcm;
this.loaded = false;
}
if (!this.loaded)
{
this.control_.AudioAvailable = this.LoadAudio();
this.loaded = true;
return;
}
if (!this.control_.AudioAvailable)
{
return;
}
if (!this.control_.Ready)
{
return;
}
if (!this.control_.Playing)
{
return;
}
while (!this.eos && this.vorbis_p && this.need_more_data && this.need_next_pcm)
{
int num = this.buffer_data(this.instream, this.oy);
if (num <= 0)
{
this.need_next_pcm = false;
this.need_more_data = false;
this.eos = true;
break;
}
int num2 = Xiph.ogg_sync_pageout(this.oy, this.og);
if (num2 != 0)
{
if (num2 < 0)
{
this.error = "Corrupt or missing data in bitstream; continuing...\n";
break;
}
this.need_more_data = false;
}
}
if (!this.eos && this.vorbis_p && !this.need_more_data && this.need_next_pcm)
{
this.DecodePage();
}
if (!this.need_next_pcm)
{
long num3 = (long)(this.control_.ElapsedTime * (double)this.control_.PcmRate) + 44100L;
if (this.Pcm != null && this.curPcmOffset < 352800 && !this.eos && num3 > this.PcmSampleOffset + (long)(176400 / this.PcmChannels))
{
this.control_.SamplesPerMillisecond = (double)this.control_.Scale * 44.1;
this.need_next_pcm = true;
}
if ((this.Pcm == null && this.curPcmOffset >= 352800) || (this.last_buf && num3 > this.PcmSampleOffset + (long)(264600 / this.PcmChannels)) || (!this.need_next_pcm && num3 > this.PcmSampleOffset + (long)(264600 / this.PcmChannels)))
{
this.last_buf = false;
this.curPcmOffset -= 176400;
float[] array = this.curPcm;
this.curPcm = this.nxtPcm;
this.nxtPcm = this.rdyPcm;
this.rdyPcm = array;
if (this.curPcmOffset > 176400)
{
for (int i = 0; i < this.curPcmOffset - 352800 + 176400; i++)
{
int num4 = i + 352800 - 176400;
if (num4 >= 352800)
{
Debug.LogError("(i > srcind)");
}
this.nxtPcm[i] = this.curPcm[num4];
}
}
this.PcmSampleOffset += (long)(176400 / this.PcmChannels);
this.Pcm = this.rdyPcm;
this.lastReadIdx++;
long num5 = DateTime.Now.Ticks / 10000L;
if (this.lastReadIdx > 9)
{
for (int j = 1; j < 10; j++)
{
this.lastReadSamples[j - 1] = this.lastReadSamples[j];
this.lastReadTime[j - 1] = this.lastReadTime[j];
}
this.lastReadIdx = 9;
}
this.lastReadSamples[this.lastReadIdx] = 176400 / this.PcmChannels;
this.lastReadTime[this.lastReadIdx] = num5;
long num6 = 0L;
long num7 = 0L;
for (int k = 1; k <= this.lastReadIdx; k++)
{
num6 += (long)this.lastReadSamples[k - 1];
num7 += this.lastReadTime[k] - this.lastReadTime[k - 1];
}
if (num6 > 0L)
{
this.readspeed = (double)num6 / (double)num7;
}
this.control_.Pcm = this.Pcm;
this.control_.PcmSampleOffset = this.PcmSampleOffset;
this.control_.PcmSampleCount = this.PcmSampleCount;
this.control_.SamplesPerMillisecond = this.readspeed;
}
}
}
private void DecodePage()
{
this.need_more_data = false;
Xiph.ogg_stream_pagein(this.os, this.og);
while (true)
{
int num = Xiph.ogg_stream_packetout(this.os, this.op);
if (num == 0)
{
break;
}
if (num < 0)
{
goto Block_2;
}
if (Xiph.vorbis_synthesis(this.vb, this.op) == 0)
{
Xiph.vorbis_synthesis_blockin(this.vd, this.vb);
}
float[][] array;
int[] array2;
int num2;
while ((num2 = Xiph.vorbis_synthesis_pcmout(this.vd, out array, out array2)) > 0)
{
int num3 = num2;
for (int i = 0; i < this.vi.channels; i++)
{
int num4 = i;
float[] array3 = array[i];
int num5 = array2[i];
for (int j = 0; j < num3; j++)
{
float num6 = array3[num5 + j];
if (num6 > 1f)
{
num6 = 1f;
}
if (num6 < -1f)
{
num6 = -1f;
}
int num7 = this.curPcmOffset + num4;
if (num7 < 352800)
{
this.curPcm[num7] = num6;
}
int num8 = num7 - 352800 + 176400;
if (num8 >= 0 && num8 < 352800)
{
this.nxtPcm[num8] = num6;
}
num4 += this.vi.channels;
}
}
this.PcmSampleCount += (long)num3;
this.curPcmOffset += num3 * this.vi.channels;
Xiph.vorbis_synthesis_read(this.vd, num3);
}
if (!this.need_more_data && this.curPcmOffset >= 352800)
{
this.need_next_pcm = false;
}
}
this.need_more_data = true;
Block_2:
if (Xiph.ogg_page_eos(this.og) != 0)
{
this.need_next_pcm = false;
this.need_more_data = false;
this.last_buf = true;
this.eos = true;
}
}
private bool LoadAudio()
{
this.oy = new Xiph.ogg_sync_state();
this.os = new Xiph.ogg_stream_state();
this.og = new Xiph.ogg_page();
this.op = new Xiph.ogg_packet();
this.vi = new Xiph.vorbis_info();
this.vc = new Xiph.vorbis_comment();
this.vd = new Xiph.vorbis_dsp_state();
this.vb = new Xiph.vorbis_block();
this.instream_pos = 0L;
this.eos = false;
this.last_buf = false;
this.need_more_data = false;
this.need_next_pcm = true;
this.vorbis_p = false;
this.stateflag = false;
this.comments_header = false;
this.instream_pos = 0L;
this.curPcmOffset = 0;
this.Pcm = null;
this.PcmSampleCount = 0L;
this.PcmSampleOffset = 0L;
this.readspeed = (double)this.control_.Scale + 44.1;
this.lastReadIdx = -1;
Xiph.ogg_sync_init(this.oy);
Xiph.vorbis_info_init(this.vi);
Xiph.vorbis_comment_init(this.vc);
while (!this.stateflag)
{
if (this.buffer_data(this.instream, this.oy) == 0)
{
break;
}
while (Xiph.ogg_sync_pageout(this.oy, this.og) > 0)
{
Xiph.ogg_stream_state ogg_stream_state = new Xiph.ogg_stream_state();
if (Xiph.ogg_page_bos(this.og) == 0)
{
this.stateflag = true;
break;
}
Xiph.ogg_stream_init(ogg_stream_state, Xiph.ogg_page_serialno(this.og));
Xiph.ogg_stream_pagein(ogg_stream_state, this.og);
int num = Xiph.ogg_stream_packetpeek(ogg_stream_state, this.op);
if (num == 1 && !this.vorbis_p && Xiph.vorbis_synthesis_headerin(this.vi, this.vc, this.op) >= 0)
{
this.os = Xiph.ogg_stream_clone(ogg_stream_state);
this.vorbis_p = true;
Xiph.ogg_stream_packetout(this.os, null);
}
else
{
Xiph.ogg_stream_clear(ogg_stream_state);
}
}
}
while (this.vorbis_p && !this.comments_header)
{
int num2;
while ((num2 = Xiph.ogg_stream_packetpeek(this.os, this.op)) != 0)
{
if (num2 >= 0)
{
if (Xiph.vorbis_synthesis_headerin(this.vi, this.vc, this.op) < 0)
{
this.error = "Error parsing Theora stream vorbis; corrupt stream?\n";
return(false);
}
Xiph.ogg_stream_packetout(this.os, null);
this.comments_header = true;
}
}
if (Xiph.ogg_sync_pageout(this.oy, this.og) > 0)
{
Xiph.ogg_stream_pagein(this.os, this.og);
}
else if (this.buffer_data(this.instream, this.oy) == 0)
{
this.error = "End of file while searching for codec headers.\n";
return(false);
}
}
if (this.vorbis_p)
{
if (this.buffer_data(this.instream, this.oy) == 0)
{
this.error = "End of file before finding all Vorbis headers!\n";
return(false);
}
this.PcmRate = this.vi.rate;
this.PcmChannels = this.vi.channels;
this.PcmSampleOffset = (long)(-176400 / this.PcmChannels);
this.PcmSampleCount = (long)(88200 / this.PcmChannels);
this.curPcmOffset = 88200;
this.control_.PcmChannels = this.PcmChannels;
this.control_.PcmRate = this.PcmRate;
this.control_.SamplesPerMillisecond = (double)this.control_.Scale * 44.1;
this.dump_comments(this.vi, this.vc);
if (Xiph.vorbis_synthesis_init(this.vd, this.vi) != 0)
{
this.error = "Wrong Vorbis stream!\n";
return(false);
}
Xiph.vorbis_block_init(this.vd, this.vb);
}
return(this.vorbis_p);
}
