// Listen for the list_devices property to be set
static void on_property_changed( void*, mlt_properties properties, const char *name )
{
IDeckLinkIterator* decklinkIterator = NULL;
IDeckLink* decklink = NULL;
IDeckLinkInput* decklinkInput = NULL;
int i = 0;
if ( name && !strcmp( name, "list_devices" ) )
mlt_event_block( (mlt_event) mlt_properties_get_data( properties, "list-devices-event", NULL ) );
else
return;
#ifdef WIN32
if ( FAILED( CoInitialize( NULL ) ) )
return;
if ( FAILED( CoCreateInstance( CLSID_CDeckLinkIterator, NULL, CLSCTX_ALL, IID_IDeckLinkIterator, (void**) &decklinkIterator ) ) )
return;
#else
if ( !( decklinkIterator = CreateDeckLinkIteratorInstance() ) )
return;
#endif
for ( ; decklinkIterator->Next( &decklink ) == S_OK; i++ )
{
if ( decklink->QueryInterface( IID_IDeckLinkInput, (void**) &decklinkInput ) == S_OK )
{
DLString name = NULL;
if ( decklink->GetModelName( &name ) == S_OK )
{
char *name_cstr = getCString( name );
const char *format = "device.%d";
char *key = (char*) calloc( 1, strlen( format ) + 1 );
sprintf( key, format, i );
mlt_properties_set( properties, key, name_cstr );
free( key );
freeDLString( name );
freeCString( name_cstr );
}
SAFE_RELEASE( decklinkInput );
}
SAFE_RELEASE( decklink );
}
SAFE_RELEASE( decklinkIterator );
mlt_properties_set_int( properties, "devices", i );
}
virtual HRESULT STDMETHODCALLTYPE VideoInputFrameArrived(
IDeckLinkVideoInputFrame* video,
IDeckLinkAudioInputPacket* audio )
{
if ( mlt_properties_get_int( MLT_PRODUCER_PROPERTIES( getProducer() ), "preview" ) &&
mlt_producer_get_speed( getProducer() ) == 0.0 && !mlt_deque_count( m_queue ))
{
pthread_cond_broadcast( &m_condition );
return S_OK;
}
// Create mlt_frame
mlt_frame frame = mlt_frame_init( MLT_PRODUCER_SERVICE( getProducer() ) );
// Copy video
if ( video )
{
if ( !( video->GetFlags() & bmdFrameHasNoInputSource ) )
{
int size = video->GetRowBytes() * ( video->GetHeight() + m_vancLines );
void* image = mlt_pool_alloc( size );
void* buffer = 0;
unsigned char* p = (unsigned char*) image;
int n = size / 2;
\
// Initialize VANC lines to nominal black
while ( --n )
{
*p ++ = 16;
*p ++ = 128;
}
// Capture VANC
if ( m_vancLines > 0 )
{
IDeckLinkVideoFrameAncillary* vanc = 0;
if ( video->GetAncillaryData( &vanc ) == S_OK && vanc )
{
for ( int i = 1; i < m_vancLines + 1; i++ )
{
if ( vanc->GetBufferForVerticalBlankingLine( i, &buffer ) == S_OK )
swab( (char*) buffer, (char*) image + ( i - 1 ) * video->GetRowBytes(), video->GetRowBytes() );
else
mlt_log_debug( getProducer(), "failed capture vanc line %d\n", i );
}
SAFE_RELEASE(vanc);
}
}
// Capture image
video->GetBytes( &buffer );
if ( image && buffer )
{
size = video->GetRowBytes() * video->GetHeight();
swab( (char*) buffer, (char*) image + m_vancLines * video->GetRowBytes(), size );
mlt_frame_set_image( frame, (uint8_t*) image, size, mlt_pool_release );
}
else if ( image )
{
mlt_log_verbose( getProducer(), "no video\n" );
mlt_pool_release( image );
}
}
else
{
mlt_log_verbose( getProducer(), "no signal\n" );
mlt_frame_close( frame );
frame = 0;
}
// Get timecode
IDeckLinkTimecode* timecode = 0;
if ( video->GetTimecode( bmdTimecodeVITC, &timecode ) == S_OK && timecode )
{
DLString timecodeString = 0;
if ( timecode->GetString( &timecodeString ) == S_OK )
{
char* s = getCString( timecodeString );
mlt_properties_set( MLT_FRAME_PROPERTIES( frame ), "meta.attr.vitc.markup", s );
mlt_log_debug( getProducer(), "timecode %s\n", s );
freeCString( s );
}
freeDLString( timecodeString );
SAFE_RELEASE( timecode );
}
}
else
{
mlt_log_verbose( getProducer(), "no video\n" );
mlt_frame_close( frame );
frame = 0;
}
// Copy audio
if ( frame && audio )
{
int channels = mlt_properties_get_int( MLT_PRODUCER_PROPERTIES( getProducer() ), "channels" );
int size = audio->GetSampleFrameCount() * channels * sizeof(int16_t);
mlt_audio_format format = mlt_audio_s16;
void* pcm = mlt_pool_alloc( size );
void* buffer = 0;
audio->GetBytes( &buffer );
if ( buffer )
{
memcpy( pcm, buffer, size );
mlt_frame_set_audio( frame, pcm, format, size, mlt_pool_release );
mlt_properties_set_int( MLT_FRAME_PROPERTIES(frame), "audio_samples", audio->GetSampleFrameCount() );
}
else
{
mlt_log_verbose( getProducer(), "no audio\n" );
mlt_pool_release( pcm );
}
}
else
{
mlt_log_verbose( getProducer(), "no audio\n" );
}
// Put frame in queue
if ( frame )
{
int queueMax = mlt_properties_get_int( MLT_PRODUCER_PROPERTIES( getProducer() ), "buffer" );
pthread_mutex_lock( &m_mutex );
if ( mlt_deque_count( m_queue ) < queueMax )
{
mlt_deque_push_back( m_queue, frame );
pthread_cond_broadcast( &m_condition );
}
else
{
mlt_frame_close( frame );
mlt_properties_set_int( MLT_PRODUCER_PROPERTIES( getProducer() ), "dropped", ++m_dropped );
mlt_log_warning( getProducer(), "frame dropped %d\n", m_dropped );
}
pthread_mutex_unlock( &m_mutex );
}
return S_OK;
}
U_CDECL_BEGIN
void readTestFile(const char *testFilePath, TestCaseCallback callback)
{
#if !UCONFIG_NO_REGULAR_EXPRESSIONS
UErrorCode status = U_ZERO_ERROR;
UXMLParser *parser = UXMLParser::createParser(status);
UXMLElement *root = parser->parseFile(testFilePath, status);
if (root == NULL) {
log_err("Could not open the test data file: %s\n", testFilePath);
delete parser;
return;
}
UnicodeString test_case = UNICODE_STRING_SIMPLE("test-case");
UnicodeString test_text = UNICODE_STRING_SIMPLE("test-text");
UnicodeString test_font = UNICODE_STRING_SIMPLE("test-font");
UnicodeString result_glyphs = UNICODE_STRING_SIMPLE("result-glyphs");
UnicodeString result_indices = UNICODE_STRING_SIMPLE("result-indices");
UnicodeString result_positions = UNICODE_STRING_SIMPLE("result-positions");
// test-case attributes
UnicodeString id_attr = UNICODE_STRING_SIMPLE("id");
UnicodeString script_attr = UNICODE_STRING_SIMPLE("script");
UnicodeString lang_attr = UNICODE_STRING_SIMPLE("lang");
// test-font attributes
UnicodeString name_attr = UNICODE_STRING_SIMPLE("name");
UnicodeString ver_attr = UNICODE_STRING_SIMPLE("version");
UnicodeString cksum_attr = UNICODE_STRING_SIMPLE("checksum");
const UXMLElement *testCase;
int32_t tc = 0;
while((testCase = root->nextChildElement(tc)) != NULL) {
if (testCase->getTagName().compare(test_case) == 0) {
char *id = getCString(testCase->getAttribute(id_attr));
char *script = getCString(testCase->getAttribute(script_attr));
char *lang = getCString(testCase->getAttribute(lang_attr));
char *fontName = NULL;
char *fontVer = NULL;
char *fontCksum = NULL;
const UXMLElement *element;
int32_t ec = 0;
int32_t charCount = 0;
// int32_t typoFlags = 3; // kerning + ligatures...
UScriptCode scriptCode;
le_int32 languageCode = -1;
UnicodeString text, glyphs, indices, positions;
int32_t glyphCount = 0, indexCount = 0, positionCount = 0;
TestResult expected = {0, NULL, NULL, NULL};
uscript_getCode(script, &scriptCode, 1, &status);
if (LE_FAILURE(status)) {
log_err("invalid script name: %s.\n", script);
goto free_c_strings;
}
if (lang != NULL) {
languageCode = getLanguageCode(lang);
if (languageCode < 0) {
log_err("invalid language name: %s.\n", lang);
goto free_c_strings;
}
}
while((element = testCase->nextChildElement(ec)) != NULL) {
UnicodeString tag = element->getTagName();
// TODO: make sure that each element is only used once.
if (tag.compare(test_font) == 0) {
fontName = getCString(element->getAttribute(name_attr));
fontVer = getCString(element->getAttribute(ver_attr));
fontCksum = getCString(element->getAttribute(cksum_attr));
} else if (tag.compare(test_text) == 0) {
text = element->getText(TRUE);
charCount = text.length();
} else if (tag.compare(result_glyphs) == 0) {
glyphs = element->getText(TRUE);
} else if (tag.compare(result_indices) == 0) {
indices = element->getText(TRUE);
} else if (tag.compare(result_positions) == 0) {
positions = element->getText(TRUE);
} else {
// an unknown tag...
char *cTag = getCString(&tag);
log_info("Test %s: unknown element with tag \"%s\"\n", id, cTag);
freeCString(cTag);
}
}
expected.glyphs = (LEGlyphID *) getHexArray(glyphs, glyphCount);
expected.indices = (le_int32 *) getHexArray(indices, indexCount);
expected.positions = getFloatArray(positions, positionCount);
expected.glyphCount = glyphCount;
if (glyphCount < charCount || indexCount != glyphCount || positionCount < glyphCount * 2 + 2) {
log_err("Test %s: inconsistent input data: charCount = %d, glyphCount = %d, indexCount = %d, positionCount = %d\n",
id, charCount, glyphCount, indexCount, positionCount);
goto free_expected;
};
(*callback)(id, fontName, fontVer, fontCksum, scriptCode, languageCode, text.getBuffer(), charCount, &expected);
free_expected:
DELETE_ARRAY(expected.positions);
DELETE_ARRAY(expected.indices);
DELETE_ARRAY(expected.glyphs);
free_c_strings:
freeCString(fontCksum);
freeCString(fontVer);
freeCString(fontName);
freeCString(lang);
freeCString(script);
freeCString(id);
}
}
delete root;
delete parser;
#endif
}