mlt_properties_set_int( properties, "height", 576 );
mlt_properties_set_int( properties, "normalised_width", 720 );
mlt_properties_set_int( properties, "normalised_height", 576 );
+ mlt_properties_set_double( properties, "aspect_ratio", 72.0/79.0 );
}
else
{
mlt_properties_set_int( properties, "height", 480 );
mlt_properties_set_int( properties, "normalised_width", 720 );
mlt_properties_set_int( properties, "normalised_height", 480 );
+ mlt_properties_set_double( properties, "aspect_ratio", 128.0/117.0 );
}
- mlt_properties_set_double( properties, "aspect_ratio", 4.0 / 3.0 );
mlt_properties_set_data( properties, "audio", NULL, 0, NULL, NULL );
mlt_properties_set_data( properties, "alpha", NULL, 0, NULL, NULL );
// Construct stacks for frames and methods
- this->stack_get_image = mlt_deque_init( );
- this->stack_frame = mlt_deque_init( );
- this->stack_service = mlt_deque_init( );
+ this->stack_image = mlt_deque_init( );
+ this->stack_audio = mlt_deque_init( );
}
return this;
mlt_properties mlt_frame_properties( mlt_frame this )
{
- return &this->parent;
+ return this != NULL ? &this->parent : NULL;
}
/** Check if we have a way to derive something other than a test card.
int mlt_frame_is_test_card( mlt_frame this )
{
- return mlt_properties_get_int( mlt_frame_properties( this ), "test_image" );
+ return mlt_deque_count( this->stack_image ) == 0 || mlt_properties_get_int( mlt_frame_properties( this ), "test_image" );
}
/** Check if we have a way to derive something than test audio.
int mlt_frame_push_get_image( mlt_frame this, mlt_get_image get_image )
{
- return mlt_deque_push_back( this->stack_get_image, get_image );
+ return mlt_deque_push_back( this->stack_image, get_image );
}
/** Pop a get_image callback.
mlt_get_image mlt_frame_pop_get_image( mlt_frame this )
{
- return mlt_deque_pop_back( this->stack_get_image );
+ return mlt_deque_pop_back( this->stack_image );
}
/** Push a frame.
int mlt_frame_push_frame( mlt_frame this, mlt_frame that )
{
- return mlt_deque_push_back( this->stack_frame, that );
+ return mlt_deque_push_back( this->stack_image, that );
}
/** Pop a frame.
mlt_frame mlt_frame_pop_frame( mlt_frame this )
{
- return mlt_deque_pop_back( this->stack_frame );
+ return mlt_deque_pop_back( this->stack_image );
}
/** Push a service.
int mlt_frame_push_service( mlt_frame this, void *that )
{
- return mlt_deque_push_back( this->stack_service, that );
+ return mlt_deque_push_back( this->stack_image, that );
}
/** Pop a service.
void *mlt_frame_pop_service( mlt_frame this )
{
- return mlt_deque_pop_back( this->stack_service );
+ return mlt_deque_pop_back( this->stack_image );
+}
+
+/** Push an audio item on the stack.
+*/
+
+int mlt_frame_push_audio( mlt_frame this, void *that )
+{
+ return mlt_deque_push_back( this->stack_audio, that );
+}
+
+/** Pop an audio item from the stack
+*/
+
+void *mlt_frame_pop_audio( mlt_frame this )
+{
+ return mlt_deque_pop_back( this->stack_audio );
}
int mlt_frame_get_image( mlt_frame this, uint8_t **buffer, mlt_image_format *format, int *width, int *height, int writable )
mlt_properties properties = mlt_frame_properties( this );
mlt_get_image get_image = mlt_frame_pop_get_image( this );
mlt_producer producer = mlt_properties_get_data( properties, "test_card_producer", NULL );
+
+ *width = *width >> 1 << 1;
if ( get_image != NULL )
{
{
mlt_properties test_properties = mlt_frame_properties( test_frame );
mlt_properties_set_double( test_properties, "consumer_aspect_ratio", mlt_properties_get_double( properties, "consumer_aspect_ratio" ) );
- mlt_properties_set_double( test_properties, "consumer_scale", mlt_properties_get_double( properties, "consumer_scale" ) );
- mlt_properties_set( test_properties, "rescale.interp", "nearest" );
+ mlt_properties_set( test_properties, "rescale.interp", mlt_properties_get( properties, "rescale.interp" ) );
mlt_frame_get_image( test_frame, buffer, format, width, height, writable );
mlt_properties_set_data( properties, "test_card_frame", test_frame, 0, ( mlt_destructor )mlt_frame_close, NULL );
mlt_properties_set_data( properties, "image", *buffer, *width * *height * 2, NULL, NULL );
mlt_properties_set_int( properties, "width", *width );
mlt_properties_set_int( properties, "height", *height );
+ mlt_properties_set_double( properties, "aspect_ratio", mlt_frame_get_aspect_ratio( test_frame ) );
+ mlt_properties_set( properties, "rescale.interp", "none" );
+ mlt_properties_set( properties, "scale", "off" );
}
else
{
}
else
{
- uint8_t *p;
- uint8_t *q;
+ register uint8_t *p;
+ register uint8_t *q;
int size = 0;
*width = *width == 0 ? 720 : *width;
mlt_properties_set_int( properties, "width", *width );
mlt_properties_set_int( properties, "height", *height );
+ mlt_properties_set_int( properties, "aspect_ratio", 1 );
switch( *format )
{
if ( this->get_audio != NULL )
{
- return this->get_audio( this, buffer, format, frequency, channels, samples );
+ this->get_audio( this, buffer, format, frequency, channels, samples );
+ }
+ else if ( mlt_properties_get_data( properties, "audio", NULL ) )
+ {
+ *buffer = mlt_properties_get_data( properties, "audio", NULL );
+ *frequency = mlt_properties_get_int( properties, "audio_frequency" );
+ *channels = mlt_properties_get_int( properties, "audio_channels" );
+ *samples = mlt_properties_get_int( properties, "audio_samples" );
}
else
{
mlt_properties_set_data( properties, "audio", *buffer, size, ( mlt_destructor )mlt_pool_release, NULL );
mlt_properties_set_int( properties, "test_audio", 1 );
}
+
+ mlt_properties_set_int( properties, "audio_frequency", *frequency );
+ mlt_properties_set_int( properties, "audio_channels", *channels );
+ mlt_properties_set_int( properties, "audio_samples", *samples );
+
return 0;
}
+unsigned char *mlt_frame_get_waveform( mlt_frame this, int w, int h )
+{
+ int16_t *pcm = NULL;
+ mlt_properties properties = mlt_frame_properties( this );
+ mlt_audio_format format = mlt_audio_pcm;
+ int frequency = 32000; // lower frequency available?
+ int channels = 2;
+ double fps = mlt_properties_get_double( properties, "fps" );
+ int samples = mlt_sample_calculator( fps, frequency, mlt_frame_get_position( this ) );
+
+ // Get the pcm data
+ mlt_frame_get_audio( this, &pcm, &format, &frequency, &channels, &samples );
+
+ // Make an 8-bit buffer large enough to hold rendering
+ int size = w * h;
+ unsigned char *bitmap = ( unsigned char* )mlt_pool_alloc( size );
+ if ( bitmap != NULL )
+ memset( bitmap, 0, size );
+ mlt_properties_set_data( properties, "waveform", bitmap, size, ( mlt_destructor )mlt_pool_release, NULL );
+
+ // Render vertical lines
+ int16_t *ubound = pcm + samples * channels;
+ int skip = samples / w - 1;
+ int i, j, k;
+
+ // Iterate sample stream and along x coordinate
+ for ( i = 0; i < w && pcm < ubound; i++ )
+ {
+ // pcm data has channels interleaved
+ for ( j = 0; j < channels; j++ )
+ {
+ // Determine sample's magnitude from 2s complement;
+ int pcm_magnitude = *pcm < 0 ? ~(*pcm) + 1 : *pcm;
+ // The height of a line is the ratio of the magnitude multiplied by
+ // half the vertical resolution
+ int height = ( int )( ( double )( pcm_magnitude ) / 32768 * h / 2 );
+ // Determine the starting y coordinate - left channel above center,
+ // right channel below - currently assumes 2 channels
+ int displacement = ( h / 2 ) - ( 1 - j ) * height;
+ // Position buffer pointer using y coordinate, stride, and x coordinate
+ unsigned char *p = &bitmap[ i + displacement * w ];
+
+ // Draw vertical line
+ for ( k = 0; k < height; k++ )
+ p[ w * k ] = 0xFF;
+
+ pcm++;
+ }
+ pcm += skip * channels;
+ }
+
+ return bitmap;
+}
+
+
void mlt_frame_close( mlt_frame this )
{
- if ( this != NULL )
+ if ( this != NULL && mlt_properties_dec_ref( mlt_frame_properties( this ) ) <= 0 )
{
- mlt_deque_close( this->stack_get_image );
- mlt_deque_close( this->stack_frame );
- mlt_deque_close( this->stack_service );
+ mlt_deque_close( this->stack_image );
+ mlt_deque_close( this->stack_audio );
mlt_properties_close( &this->parent );
free( this );
}
/***** convenience functions *****/
-/* this macro scales rgb into the yuv gamut, y is scaled by 219/255 and uv by 224/255 */
-#define RGB2YUV(r, g, b, y, u, v)\
- y = ((257*r + 504*g + 98*b) >> 10) + 16;\
- u = ((-148*r - 291*g + 439*b) >> 10) + 128;\
- v = ((439*r - 368*g - 71*b) >> 10) + 128;\
- y = y < 16 ? 16 : y;\
- u = u < 16 ? 16 : u;\
- v = v < 16 ? 16 : v;\
- y = y > 235 ? 235 : y;\
- u = u > 240 ? 240 : u;\
- v = v > 240 ? 240 : v
-
-/* this macro assumes the user has already scaled their rgb down into the broadcast limits */
-#define RGB2YUV_UNSCALED(r, g, b, y, u, v)\
- y = (299*r + 587*g + 114*b) >> 10;\
- u = ((-169*r - 331*g + 500*b) >> 10) + 128;\
- v = ((500*r - 419*g - 81*b) >> 10) + 128;\
- y = y < 16 ? 16 : y;\
- u = u < 16 ? 16 : u;\
- v = v < 16 ? 16 : v;\
- y = y > 235 ? 235 : y;\
- u = u > 240 ? 240 : u;\
- v = v > 240 ? 240 : v
-
int mlt_convert_rgb24a_to_yuv422( uint8_t *rgba, int width, int height, int stride, uint8_t *yuv, uint8_t *alpha )
{
int ret = 0;
int active_width = 2 * iwidth;
int inactive_width = out_x_range - in_x_range;
+ uint8_t *p = NULL;
+ uint8_t *end = NULL;
// Loop for the entirety of our output height.
while ( iheight -- )
}
// We're in the input range for this row.
- memcpy( out_ptr, in_middle + in_line, active_width );
- out_ptr += active_width;
+ p = in_middle + in_line;
+ end = out_ptr + active_width;
+ while ( out_ptr != end )
+ {
+ *out_ptr ++ = *p ++;
+ *out_ptr ++ = *p ++;
+ }
// Fill the outer part with black
elements = inactive_width;
{
int samples = 0;
- if ( fps > 29 && fps <= 30 )
+ if ( ( int )( fps * 100 ) == 2997 )
{
samples = frequency / 30;
return samples;
}
-
projects / melted / blobdiff