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winamp/Src/Plugins/Input/in_mkv/PlayThread.cpp
Jef 20d28e80a5 Initial community commit
2024-09-24 14:54:57 +02:00

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#include "MKVPlayer.h"
#include "api__in_mkv.h"
#include "main.h"
#include "../Winamp/wa_ipc.h"
#include "../nsmkv/nsmkv.h"
#include "../nu/AutoLock.h"
#include "../nu/ns_wc.h"
#include "../nu/AutoWide.h"
#include "../nu/AudioOutput.h"
#include "ifc_mkvaudiodecoder.h"
#include "svc_mkvdecoder.h"
#include "ifc_mkvvideodecoder.h"
#include "../nsmkv/file_mkv_reader.h"
#include <api/service/waservicefactory.h>
#include <api/service/services.h>
#include <windows.h>
#include <strsafe.h>
// {B6CB4A7C-A8D0-4c55-8E60-9F7A7A23DA0F}
static const GUID playbackConfigGroupGUID =
{
0xb6cb4a7c, 0xa8d0, 0x4c55, { 0x8e, 0x60, 0x9f, 0x7a, 0x7a, 0x23, 0xda, 0xf }
};
IVideoOutput *videoOutput = 0;
/* benski>
TODO: keep track of "fully parsed position" we don't have to always start over at segment_position
TODO: if we have multiple audio or video tracks, do that weird winamp interface for it
*/
void MKVPlayer::MKVWait::Wait_SetEvents(HANDLE killswitch, HANDLE seek_event)
{
handles[0]=killswitch;
handles[1]=seek_event;
}
int MKVPlayer::MKVWait::WaitOrAbort(int time_in_ms)
{
switch(WaitForMultipleObjects(2, handles, FALSE, 55))
{
case WAIT_TIMEOUT: // all good, wait successful
return 0;
case WAIT_OBJECT_0: // killswitch
return MKVPlayer::MKV_STOP;
case WAIT_OBJECT_0+1: // seek event
return MKVPlayer::MKV_ABORT;
default: // some OS error?
return MKVPlayer::MKV_ERROR;
}
}
MKVPlayer::MKVPlayer(const wchar_t *_filename) : audio_output(&plugin)
{
first_cluster_found = false;
cues_searched = false;
segment_position=0;
segment_size = 0;
filename = _wcsdup(_filename);
m_needseek = -1;
audio_decoder=0;
audio_track_num=0;
audio_output_len = 65536;
audio_opened=false;
audio_flushing=FLUSH_START;
audio_first_timestamp=0;
audio_buffered=0;
audio_bitrate=0;
video_decoder=0;
video_track_num=0;
video_opened = false;
video_stream = 0;
video_thread = 0;
video_timecode_scale = 0;
video_cluster_position = 0;
video_track_entry = 0;
video_bitrate = 0;
consecutive_early_frames = 0;
if (!videoOutput)
videoOutput = (IVideoOutput *)SendMessage(plugin.hMainWindow, WM_WA_IPC, 0, IPC_GET_IVIDEOOUTPUT);
killswitch = CreateEvent(NULL, TRUE, FALSE, NULL);
seek_event = CreateEvent(NULL, TRUE, FALSE, NULL);
/* video events */
video_break = CreateEvent(NULL, TRUE, FALSE, NULL);
video_flush_done = CreateEvent(NULL, FALSE, FALSE, NULL);
video_flush = CreateEvent(NULL, TRUE, FALSE, NULL);
video_resume = CreateEvent(NULL, TRUE, FALSE, NULL);
video_ready = CreateEvent(NULL, TRUE, FALSE, NULL);
audio_output.Wait_SetEvents(killswitch, seek_event);
}
MKVPlayer::~MKVPlayer() {
free(filename);
CloseHandle(killswitch);
CloseHandle(seek_event);
CloseHandle(video_break);
CloseHandle(video_flush_done);
CloseHandle(video_flush);
CloseHandle(video_resume);
CloseHandle(video_ready);
if (audio_decoder) {
audio_decoder->Close();
}
delete main_reader;
}
void MKVPlayer::Kill()
{
SetEvent(killswitch);
if (video_thread)
WaitForSingleObject(video_thread, INFINITE);
video_thread = 0;
if (video_decoder)
video_decoder->Close();
video_decoder=0;
}
void MKVPlayer::Seek(int seek_pos)
{
m_needseek = seek_pos;
SetEvent(seek_event);
}
int MKVPlayer::GetOutputTime() const
{
if (m_needseek != -1)
return m_needseek;
else
return plugin.outMod->GetOutputTime() + audio_first_timestamp;
}
DWORD CALLBACK MKVThread(LPVOID param)
{
MKVPlayer *player = (MKVPlayer *)param;
DWORD ret = player->ThreadFunction();
return ret;
}
bool MKVPlayer::FindCues()
{
if (cues_searched)
return true;
uint64_t original_position = main_reader->Tell();
// first, let's try the seek table
uint64_t cues_position = 0;
if (seek_table.GetEntry(mkv_segment_cues, &cues_position))
{
main_reader->Seek(cues_position+segment_position);
ebml_node node;
if (read_ebml_node(main_reader, &node) == 0)
return false;
if (node.id == mkv_segment_cues) // great success!
{
if (nsmkv::ReadCues(main_reader, node.size, cues) == 0)
return false;
cues_searched=true;
main_reader->Seek(original_position);
return true;
}
}
main_reader->Seek(segment_position); // TODO: keep track of how far Step() has gotten so we don't have to start from scratch
/* --- TODO: make this block into a function in nsmkv --- */
while (1) // TODO: key off segment size to make sure we don't overread
{
uint64_t this_position = main_reader->Tell();
ebml_node node;
if (read_ebml_node(main_reader, &node) == 0)
return false;
if (node.id != mkv_void)
{
nsmkv::SeekEntry seek_entry(node.id, this_position-segment_position);
seek_table.AddEntry(seek_entry, nsmkv::SeekTable::ADDENTRY_FOUND);
}
if (node.id == mkv_segment_cues)
{
if (nsmkv::ReadCues(main_reader, node.size, cues) == 0)
return false;
break;
}
else
{
main_reader->Skip(node.size);
}
}
/* ------ */
cues_searched=true;
main_reader->Seek(original_position);
return true;
}
bool MKVPlayer::ParseHeader()
{
ebml_node node;
if (read_ebml_node(main_reader, &node) == 0)
return false;
if (node.id != mkv_header)
return false;
if (nsmkv::ReadHeader(main_reader, node.size, header) == 0)
return false;
if (OnHeader(header) != MKV_CONTINUE)
return false;
return true;
}
bool MKVPlayer::FindSegment()
{
ebml_node node;
while (segment_position == 0)
{
if (read_ebml_node(main_reader, &node) == 0)
return false;
if (node.id == mkv_segment)
{
segment_position = main_reader->Tell();
segment_size = node.size;
}
else
{
if (nsmkv::SkipNode(main_reader, node.id, node.size) == 0)
return false;
}
}
return true;
}
static ifc_mkvvideodecoder *FindVideoDecoder(const nsmkv::TrackEntry *track_entry)
{
size_t n = 0;
waServiceFactory *sf = 0;
while (sf = plugin.service->service_enumService(WaSvc::MKVDECODER, n++))
{
svc_mkvdecoder *dec = static_cast<svc_mkvdecoder *>(sf->getInterface());
if (dec)
{
ifc_mkvvideodecoder *decoder=0;
if (dec->CreateVideoDecoder(track_entry->codec_id, track_entry, &track_entry->video, &decoder) == svc_mkvdecoder::CREATEDECODER_SUCCESS)
{
sf->releaseInterface(dec);
return decoder;
}
sf->releaseInterface(dec);
}
}
return 0;
}
static ifc_mkvaudiodecoder *FindAudioDecoder(const nsmkv::TrackEntry *track_entry)
{
unsigned int bits_per_sample = (unsigned int)AGAVE_API_CONFIG->GetUnsigned(playbackConfigGroupGUID, L"bits", 16);
if (bits_per_sample >= 24) bits_per_sample = 24;
else bits_per_sample = 16;
unsigned int max_channels;
// get max channels
if (AGAVE_API_CONFIG->GetBool(playbackConfigGroupGUID, L"surround", true))
max_channels = 6;
else if (AGAVE_API_CONFIG->GetBool(playbackConfigGroupGUID, L"mono", false))
max_channels = 1;
else
max_channels = 2;
size_t n=0;
waServiceFactory *sf = 0;
while (sf = plugin.service->service_enumService(WaSvc::MKVDECODER, n++))
{
svc_mkvdecoder *dec = static_cast<svc_mkvdecoder *>(sf->getInterface());
if (dec)
{
ifc_mkvaudiodecoder *decoder=0;
// TODO: read from api_config!!
if (dec->CreateAudioDecoder(track_entry->codec_id, track_entry, &track_entry->audio, bits_per_sample, max_channels, false, &decoder) == svc_mkvdecoder::CREATEDECODER_SUCCESS)
{
sf->releaseInterface(dec);
return decoder;
}
sf->releaseInterface(dec);
}
}
return 0;
}
int MKVPlayer::OnAudio(const nsmkv::Cluster &cluster, const nsmkv::BlockBinary &binary)
{
if (video_decoder)
{
HANDLE handles[3] = {killswitch, seek_event, video_ready};
if (WaitForMultipleObjects(3, handles, FALSE, INFINITE) != WAIT_OBJECT_0+2)
return MKV_ABORT;
}
if (audio_flushing != FLUSH_NONE)
{
uint64_t timestamp=cluster.time_code + binary.time_code;
uint64_t timestamp_ms = segment_info.time_code_scale * timestamp / 1000000ULL;
if (audio_flushing == FLUSH_START || !audio_opened)
{
audio_first_timestamp = (int)timestamp_ms;
}
else
{
audio_first_timestamp=0;
audio_output.Flush((int)timestamp_ms);
m_needseek = -1;
}
audio_flushing=FLUSH_NONE;
}
nsmkv::LacingState lacing_state;
uint32_t i = 0;
if (nsmkv::Lacing::GetState(binary.flags, (const uint8_t *)binary.data, binary.data_size, &lacing_state))
{
const uint8_t *frame = 0;
size_t frame_len = 0;
while (nsmkv::Lacing::GetFrame(i++, (const uint8_t *)binary.data, binary.data_size, &frame, &frame_len, &lacing_state))
{
size_t decoded_size = audio_output_len-audio_buffered;
if (audio_decoder->DecodeBlock((void *)frame, frame_len, audio_buffer+audio_buffered, &decoded_size) == ifc_mkvaudiodecoder::MKV_SUCCESS)
{
decoded_size+=audio_buffered;
audio_buffered=0;
if (!audio_opened)
{
unsigned int sample_rate, channels, bps;
bool is_float;
if (audio_decoder->GetOutputProperties(&sample_rate, &channels, &bps, &is_float) == ifc_mkvaudiodecoder::MKV_SUCCESS)
{
// TODO: pass -666 for 5th param if video
if (!audio_output.Open(audio_first_timestamp, channels, sample_rate, bps, -1, -1))
{
return MKV_STOP;
}
audio_opened=true;
}
}
if (audio_opened && decoded_size)
{
int ret = audio_output.Write((char *)audio_buffer, decoded_size);
if (ret != 0)
return ret;
}
else
{
audio_buffered=decoded_size;
}
}
}
}
return MKV_CONTINUE;
}
int MKVPlayer::OutputPictures(uint64_t default_timestamp)
{
void *data=0, *decoder_data=0;
uint64_t timestamp=default_timestamp;
while (video_decoder->GetPicture(&data, &decoder_data, &timestamp) == ifc_mkvvideodecoder::MKV_SUCCESS)
{
if (!video_opened)
{
int color_format = 0;
int width = 0, height = 0;
double aspect_ratio = 1.0;
if (video_decoder->GetOutputProperties(&width, &height, &color_format, &aspect_ratio) == ifc_mkvvideodecoder::MKV_SUCCESS)
{
if (video_track_entry && video_track_entry->video.display_height && video_track_entry->video.display_width && video_track_entry->video.pixel_height && video_track_entry->video.pixel_width)
{
aspect_ratio = (double)video_track_entry->video.pixel_width / (double)video_track_entry->video.pixel_height / ((double)video_track_entry->video.display_width / (double)video_track_entry->video.display_height);
}
else
{
// winamp wants an "aspect correction value" not the true aspect ratio itself
aspect_ratio = 1.0/aspect_ratio;
}
videoOutput->extended(VIDUSER_SET_THREAD_SAFE, 1, 0);
videoOutput->open(width, height, 0, aspect_ratio, color_format);
video_opened=true;
SetEvent(video_ready);
}
}
if (video_opened)
{
uint64_t timestamp_ms;
if (video_timecode_scale == 0)
timestamp_ms = segment_info.time_code_scale * timestamp / 1000000ULL;
else
timestamp_ms = (uint64_t) (video_timecode_scale * (double)segment_info.time_code_scale * (double)timestamp / 1000000.0);
again:
int realTime = plugin.outMod->GetOutputTime() + audio_first_timestamp;
int time_diff = (int)timestamp_ms - realTime;
if (time_diff > 12 && consecutive_early_frames) // plenty of time, go ahead and turn off frame dropping
{
if (--consecutive_early_frames == 0)
video_decoder->HurryUp(0);
}
else if (time_diff < -50) // shit we're way late, start dropping frames
{
video_decoder->HurryUp(1);
consecutive_early_frames += 3;
}
if (time_diff > 3)
{
HANDLE handles[] = {killswitch, video_break};
int ret= WaitForMultipleObjects(2, handles, FALSE, (DWORD)(timestamp_ms-realTime));
if (ret != WAIT_TIMEOUT)
{
video_decoder->FreePicture(data, decoder_data);
if (ret == WAIT_OBJECT_0+1) /* second event doesn't stop stream*/
return MKV_ABORT;
return MKV_STOP;
}
goto again; // TODO: handle paused state a little better than this
}
videoOutput->draw(data);
}
video_decoder->FreePicture(data, decoder_data);
}
return MKV_CONTINUE;
}
int MKVPlayer::OnVideo(const nsmkv::Cluster &cluster, const nsmkv::BlockBinary &binary)
{
if (video_decoder)
{
nsmkv::LacingState lacing_state;
uint32_t i = 0;
if (nsmkv::Lacing::GetState(binary.flags, (const uint8_t *)binary.data, binary.data_size, &lacing_state))
{
const uint8_t *frame = 0;
size_t frame_len = 0;
while (nsmkv::Lacing::GetFrame(i++, (const uint8_t *)binary.data, binary.data_size, &frame, &frame_len, &lacing_state))
{
// matroska epic fail: laced frames don't have separate timestamps!
if (video_decoder) video_decoder->DecodeBlock(frame, frame_len, cluster.time_code+binary.time_code);
uint64_t timestamp=cluster.time_code + binary.time_code;
int ret = OutputPictures(timestamp);
if (ret != MKV_CONTINUE)
return ret;
}
}
}
return MKV_CONTINUE;
}
DWORD CALLBACK MKVPlayer::VideoThreadFunction()
{
//video_stream = _wfopen(filename, L"rb");
if (!video_stream)
return 1;
video_stream->Seek(video_cluster_position);
HANDLE handles[] = { killswitch, video_break, video_flush, video_resume };
DWORD waitTime = 0;
while (1)
{
int ret = WaitForMultipleObjects(4, handles, FALSE, waitTime);
if (ret == WAIT_TIMEOUT)
{
int ret = Step(video_stream, &video_track_num, 1);
if (ret == MKV_EOF)
{
video_decoder->EndOfStream();
OutputPictures(0);
// TODO: tell decoder about end-of-stream to flush buffers
waitTime = INFINITE;
}
else if (ret == MKV_ERROR || ret == MKV_STOP)
{
waitTime = INFINITE; // wait for killswitch
}
}
else if (ret == WAIT_OBJECT_0)
{
break;
}
else if (ret == WAIT_OBJECT_0 + 1) // video break
{
waitTime = INFINITE; // this will stop us from decoding samples for a while
ResetEvent(video_break);
SetEvent(video_flush_done);
}
else if (ret == WAIT_OBJECT_0 + 2) // video flush
{
if (video_decoder)
video_decoder->Flush();
ResetEvent(video_flush);
waitTime = 0;
SetEvent(video_flush_done);
}
else if (ret == WAIT_OBJECT_0 + 3) // resume video
{
ResetEvent(video_resume);
waitTime = 0;
SetEvent(video_flush_done);
}
}
if (videoOutput)
videoOutput->close();
delete video_stream;
video_stream=0;
return 0;
}
int MKVPlayer::OnHeader(const nsmkv::Header &header)
{
// TODO: figure out if the file is really matroska, and if we can support the ebml version
return MKV_CONTINUE;
}
void MKVPlayer::OnSegmentInfo(const nsmkv::SegmentInfo &segment_info)
{
g_duration = segment_info.GetDurationMilliseconds();
uint64_t content_length = main_reader->GetContentLength();
if (content_length && g_duration)
{
int bitrate = (int)(8ULL * content_length / (uint64_t)g_duration);
plugin.SetInfo(bitrate, -1, -1, -1);
}
}
int MKVPlayer::OnTracks(const nsmkv::Tracks &tracks)
{
wchar_t audio_info[256] = {0};
wchar_t video_info[256] = {0};
// ===== enumerate tracks and find decoders =====
size_t i=0;
const nsmkv::TrackEntry *track_entry;
while (track_entry = tracks.EnumTrack(i++))
{
if (track_entry->track_type == mkv_track_type_audio && !audio_decoder)
{
audio_decoder = FindAudioDecoder(track_entry);
if (audio_decoder)
{
MultiByteToWideCharSZ(CP_UTF8, 0, track_entry->codec_id, -1, audio_info, 256);
audio_track_num = track_entry->track_number;
}
}
else if (track_entry->track_type == mkv_track_type_video && !video_decoder)
{
video_decoder = FindVideoDecoder(track_entry);
if (video_decoder)
{
StringCbPrintfW(video_info, sizeof(video_info), L"%s %I64ux%I64u", AutoWide(track_entry->codec_id, CP_UTF8), track_entry->video.pixel_width, track_entry->video.pixel_height);
video_track_num = track_entry->track_number;
video_stream = new MKVReaderFILE(filename);
video_timecode_scale = track_entry->track_timecode_scale;
video_track_entry = track_entry;
}
}
}
// TODO this prevents trying to play video only files
// which the plug-in is not at all happy playing
/*if (!audio_decoder)// && !video_decoder)
return MKV_STOP;*/
wchar_t video_status[512] = {0};
if (audio_decoder && video_decoder)
{
StringCbPrintf(video_status, sizeof(video_status), L"MKV: %s, %s", audio_info, video_info);
videoOutput->extended(VIDUSER_SET_INFOSTRINGW,(INT_PTR)video_status,0);
}
else if (audio_decoder)
{
StringCbPrintf(video_status, sizeof(video_status), L"MKV: %s", audio_info);
videoOutput->extended(VIDUSER_SET_INFOSTRINGW,(INT_PTR)video_status,0);
}
else if (video_decoder)
{
StringCbPrintf(video_status, sizeof(video_status), L"MKV: %s, %s", audio_info, video_info);
videoOutput->extended(VIDUSER_SET_INFOSTRINGW,(INT_PTR)video_status,0);
}
return MKV_CONTINUE;
}
DWORD CALLBACK VideoThread(LPVOID param)
{
MKVPlayer *player = (MKVPlayer *)param;
return player->VideoThreadFunction();
}
int MKVPlayer::ParseCluster(nsmkv::MKVReader *stream, uint64_t size, uint64_t *track_numbers, size_t track_numbers_len)
{
nsmkv::Cluster cluster;
uint64_t total_bytes_read=0;
while (size)
{
ebml_node node;
uint64_t bytes_read = read_ebml_node(stream, &node);
if (bytes_read == 0)
return MKV_ERROR;
// benski> checking bytes_read and node.size separately prevents possible integer overflow attack
if (bytes_read > size)
return MKV_ERROR;
total_bytes_read+=bytes_read;
size-=bytes_read;
if (node.size > size)
return MKV_ERROR;
total_bytes_read+=node.size;
size-=node.size;
switch(node.id)
{
case mkv_cluster_timecode:
{
uint64_t val;
if (read_unsigned(stream, node.size, &val) == 0)
return MKV_ERROR;
printf("Time Code: %I64u\n", val);
cluster.time_code = val;
}
break;
case mkv_cluster_blockgroup:
{
printf("Block Group\n");
nsmkv::Block block;
if (nsmkv::ReadBlockGroup(stream, node.size, block, track_numbers, track_numbers_len) == 0)
return MKV_ERROR;
if (block.binary.data)
{
int ret = OnBlock(cluster, block);
if (ret != MKV_CONTINUE)
return ret;
}
}
break;
case mkv_cluster_simpleblock:
{
printf("simple block, size: %I64u\n", node.size);
nsmkv::Block block;
if (ReadBlockBinary(stream, node.size, block.binary, track_numbers, track_numbers_len) == 0)
return 0;
if (block.binary.data)
{
int ret = OnBlock(cluster, block);
if (ret != MKV_CONTINUE)
return ret;
}
}
break;
default:
nsmkv::ReadGlobal(stream, node.id, node.size);
}
}
return MKV_CONTINUE;
}
int MKVPlayer::OnBlock(const nsmkv::Cluster &cluster, const nsmkv::Block &block)
{
if (WaitForSingleObject(killswitch, 0) == WAIT_TIMEOUT)
{
if (block.binary.track_number == audio_track_num)
{
return OnAudio(cluster, block.binary);
}
else if (block.binary.track_number == video_track_num)
{
return OnVideo(cluster, block.binary);
}
return MKV_CONTINUE;
}
else
return MKV_ABORT;
}
int MKVPlayer::OnFirstCluster(uint64_t position)
{
if (video_decoder)
{
video_cluster_position = position;
video_thread = CreateThread(0, 0, VideoThread, this, 0, 0);
SetThreadPriority(video_thread, (int)AGAVE_API_CONFIG->GetInt(playbackConfigGroupGUID, L"priority", THREAD_PRIORITY_HIGHEST));
}
return MKV_CONTINUE;
}
int MKVPlayer::Step(nsmkv::MKVReader *stream, uint64_t *track_numbers, size_t track_numbers_len)
{
uint64_t this_position = stream->Tell();
ebml_node node;
if (read_ebml_node(stream, &node) == 0)
return MKV_EOF;
if (node.id != mkv_void)
{
nsmkv::SeekEntry seek_entry(node.id, this_position-segment_position);
seek_table.AddEntry(seek_entry, nsmkv::SeekTable::ADDENTRY_FOUND);
}
switch(node.id)
{
case mkv_segment_segmentinfo:
if (nsmkv::ReadSegmentInfo(stream, node.size, segment_info) == 0)
return MKV_EOF;
OnSegmentInfo(segment_info);
break;
case mkv_metaseek_seekhead:
if (nsmkv::ReadSeekHead(stream, node.size, seek_table) == 0)
return MKV_EOF;
break;
case mkv_segment_tracks:
if (nsmkv::ReadTracks(stream, node.size, tracks) == 0)
return MKV_EOF;
return OnTracks(tracks);
break;
case mkv_segment_cues:
if (!cues_searched)
{
if (nsmkv::ReadCues(stream, node.size, cues) == 0)
return MKV_EOF;
cues_searched=true;
}
else
{
stream->Skip(node.size);
}
break;
case mkv_segment_cluster:
if (!first_cluster_found)
{
first_cluster_found=true;
OnFirstCluster(this_position);
}
return ParseCluster(stream, node.size, track_numbers, track_numbers_len);
break;
case mkv_segment_attachments:
if (nsmkv::ReadAttachment(stream, node.size, attachments) == 0)
return MKV_EOF;
break;
default:
if (nsmkv::ReadGlobal(stream, node.id, node.size) == 0)
return MKV_EOF;
break;
}
return MKV_CONTINUE;
}
DWORD CALLBACK MKVPlayer::ThreadFunction()
{
// ===== tell audio output helper object about the output plugin =====
audio_output.Init(plugin.outMod);
FILE *f = _wfopen(filename, L"rb");
if (!f)
goto btfo;
main_reader = new MKVReaderFILE(f);
// ===== read the header =====
if (!ParseHeader())
goto btfo;
// ===== find segment start =====
if (!FindSegment())
goto btfo;
// TODO: try to find more segments?
HANDLE handles[] = {killswitch, seek_event};
while(1)
{
int ret = WaitForMultipleObjects(2, handles, FALSE, 0);
if (ret == WAIT_TIMEOUT)
{
int ret = Step(main_reader, &audio_track_num, 1);
if (ret == MKV_EOF)
{
break;
}
else if (ret == MKV_ERROR || ret == MKV_STOP)
{
break;
}
}
else if (ret == WAIT_OBJECT_0) // kill
{
break;
}
else if (ret == WAIT_OBJECT_0+1) // seek event
{
ResetEvent(seek_event);
// pause video thread
if (video_decoder)
{
SetEvent(video_break);
WaitForSingleObject(video_flush_done, INFINITE);
}
FindCues();
uint64_t seek_time = segment_info.ConvertMillisecondsToTime(m_needseek);
uint64_t curr_time = segment_info.ConvertMillisecondsToTime(plugin.outMod->GetOutputTime() + audio_first_timestamp);
int direction = (curr_time < seek_time)?nsmkv::Cues::SEEK_FORWARD:nsmkv::Cues::SEEK_BACKWARD;
nsmkv::CuePoint *cue_point = cues.GetCuePoint(seek_time, curr_time, direction);
if (cue_point)
{
nsmkv::CueTrackPosition *position = cue_point->GetPosition(audio_track_num);
if (!position) // some files don't have the audio track. we're going to assume the data is interleaved and just use the video track
position = cue_point->GetPosition(video_track_num);
if (position)
{
audio_flushing=FLUSH_SEEK;
if (audio_decoder) audio_decoder->Flush();
main_reader->Seek(position->cluster_position + segment_position);
}
if (video_stream)
{
position = cue_point->GetPosition(video_track_num);
if (position)
{
video_stream->Seek(position->cluster_position + segment_position);
}
}
}
else
{
// TODO enumerate clusters & blocks to find closest time (ugh)
}
if (video_decoder)
{
SetEvent(video_flush);
WaitForSingleObject(video_flush_done, INFINITE);
}
}
}
delete main_reader;
main_reader=0;
if (WaitForSingleObject(killswitch, 0) != WAIT_OBJECT_0)
{
// TODO: tell audio decoder about end-of-stream and get remaining audio
audio_output.Write(0,0);
audio_output.WaitWhilePlaying();
if (WaitForSingleObject(killswitch, 0) != WAIT_OBJECT_0)
PostMessage(plugin.hMainWindow, WM_WA_MPEG_EOF, 0, 0);
}
if (audio_decoder)
{
audio_decoder->Close();
audio_decoder=0;
audio_output.Close();
}
return 0;
btfo: // bail the fuck out
if (WaitForSingleObject(killswitch, 0) != WAIT_OBJECT_0)
PostMessage(plugin.hMainWindow, WM_WA_MPEG_EOF, 0, 0);
delete main_reader;
main_reader=0;
if (audio_decoder)
{
audio_decoder->Close();
audio_decoder=0;
audio_output.Close();
}
return 1;
}
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