-/*
- * mlt_frame.c -- interface for all frame classes
- * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
- * Author: Charles Yates <charles.yates@pandora.be>
+/**
+ * \file mlt_frame.c
+ * \brief interface for all frame classes
+ * \see mlt_frame_s
+ *
+ * Copyright (C) 2003-2009 Ushodaya Enterprises Limited
+ * \author Charles Yates <charles.yates@pandora.be>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
-#include "config.h"
#include "mlt_frame.h"
#include "mlt_producer.h"
#include "mlt_factory.h"
/** Constructor for a frame.
*/
-mlt_frame mlt_frame_init( )
+mlt_frame mlt_frame_init( mlt_service service )
{
// Allocate a frame
mlt_frame this = calloc( sizeof( struct mlt_frame_s ), 1 );
if ( this != NULL )
{
+ mlt_profile profile = mlt_service_profile( service );
+
// Initialise the properties
mlt_properties properties = &this->parent;
mlt_properties_init( properties, this );
// Set default properties on the frame
mlt_properties_set_position( properties, "_position", 0.0 );
mlt_properties_set_data( properties, "image", NULL, 0, NULL, NULL );
- mlt_properties_set_int( properties, "width", mlt_profile_get()->width );
- mlt_properties_set_int( properties, "height", mlt_profile_get()->height );
- mlt_properties_set_int( properties, "normalised_width", mlt_profile_get()->width );
- mlt_properties_set_int( properties, "normalised_height", mlt_profile_get()->height );
+ mlt_properties_set_int( properties, "width", profile? profile->width : 720 );
+ mlt_properties_set_int( properties, "height", profile? profile->height : 576 );
+ mlt_properties_set_int( properties, "normalised_width", profile? profile->width : 720 );
+ mlt_properties_set_int( properties, "normalised_height", profile? profile->height : 576 );
mlt_properties_set_double( properties, "aspect_ratio", mlt_profile_sar( NULL ) );
mlt_properties_set_data( properties, "audio", NULL, 0, NULL, NULL );
mlt_properties_set_data( properties, "alpha", NULL, 0, NULL, NULL );
of a composite where the b frame completely obscures the a frame).
The image must be writable and the destructor for the image itself must be taken
- care of on another frame and that frame cannot have a replace applied to it...
+ care of on another frame and that frame cannot have a replace applied to it...
Further it assumes that no alpha mask is in use.
- For these reasons, it can only be used in a specific situation - when you have
+ For these reasons, it can only be used in a specific situation - when you have
multiple tracks each with their own transition and these transitions are applied
- in a strictly reversed order (ie: highest numbered [lowest track] is processed
+ in a strictly reversed order (ie: highest numbered [lowest track] is processed
first).
More reliable approach - the cases should be detected during the process phase
// Remove all items from the stack
while( mlt_deque_pop_back( this->stack_image ) ) ;
- // Update the information
+ // Update the information
mlt_properties_set_data( MLT_FRAME_PROPERTIES( this ), "image", image, 0, NULL, NULL );
mlt_properties_set_int( MLT_FRAME_PROPERTIES( this ), "width", width );
mlt_properties_set_int( MLT_FRAME_PROPERTIES( this ), "height", height );
mlt_audio_format format = mlt_audio_pcm;
int frequency = 32000; // lower frequency available?
int channels = 2;
- double fps = mlt_properties_get_double( properties, "fps" );
+ double fps = mlt_profile_fps( NULL );
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++ )
{
{
// 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
+ // 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,
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;
int yy, uu, vv;
int r,g,b;
total /= 2;
- while (total--)
+ while (total--)
{
yy = yuv[0];
uu = yuv[1];
{
// Start at the beginning of the line
out_ptr = out_line;
-
+
// Pointer to the middle of the input line
in_line = in_middle + ( dy >> 16 ) * istride;
double B = exp(-2.0 * M_PI * Fc);
double A = 1.0 - B;
double v;
-
+
for ( i = 0; i < *samples; i++ )
{
for ( j = 0; j < *channels; j++ )
projects / melted / blobdiff