* \brief interface for all frame classes
* \see mlt_frame_s
*
- * Copyright (C) 2003-2009 Ushodaya Enterprises Limited
+ * Copyright (C) 2003-2013 Ushodaya Enterprises Limited
* \author Charles Yates <charles.yates@pandora.be>
+ * \author Dan Dennedy <dan@dennedy.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* (no speed factor applied, only available when \em _need_previous_next is set on the producer)
* \properties \em colorspace the standard for luma coefficients
* \properties \em force_full_luma luma range handling, set to -1 for pass-through, 1 for full range, 0 for scaling
+ * \properties \em audio_frequency the sample rate of the audio
+ * \properties \em audio_channels the number of audio channels
+ * \properties \em audio_samples the number of audio samples
+ * \properties \em audio_format the mlt_audio_format for the audio on this frame
+ * \properties \em format the mlt_image_format of the image on this frame
+ * \properties \em width the horizontal resolution of the image
+ * \properties \em height the vertical resolution of the image
+ * \properties \em aspect_ratio the sample aspect ratio of the image
*/
struct mlt_frame_s
extern double mlt_frame_get_aspect_ratio( mlt_frame self );
extern int mlt_frame_set_aspect_ratio( mlt_frame self, double value );
extern mlt_position mlt_frame_get_position( mlt_frame self );
+extern mlt_position mlt_frame_original_position( mlt_frame self );
extern int mlt_frame_set_position( mlt_frame self, mlt_position value );
extern int mlt_frame_set_image( mlt_frame self, uint8_t *image, int size, mlt_destructor destroy );
extern int mlt_frame_set_alpha( mlt_frame self, uint8_t *alpha, int size, mlt_destructor destroy );
extern mlt_producer mlt_frame_get_original_producer( mlt_frame self );
extern void mlt_frame_close( mlt_frame self );
extern mlt_properties mlt_frame_unique_properties( mlt_frame self, mlt_service service );
+extern mlt_frame mlt_frame_clone( mlt_frame self, int is_deep );
/* convenience functions */
extern int mlt_sample_calculator( float fps, int frequency, int64_t position );
extern const char * mlt_image_format_name( mlt_image_format format );
extern int mlt_image_format_size( mlt_image_format format, int width, int height, int *bpp );
extern const char * mlt_audio_format_name( mlt_audio_format format );
+extern int mlt_audio_format_size( mlt_audio_format format, int samples, int channels );
extern void mlt_frame_write_ppm( mlt_frame frame );
/** This macro scales RGB into the YUV gamut - y is scaled by 219/255 and uv by 224/255. */
u = ((-152*r - 300*g + 450*b) >> 10) + 128;\
v = ((450*r - 377*g - 73*b) >> 10) + 128;
+/** This macro scales YUV up into the full gamut of the RGB color space. */
+#define YUV2RGB_601_SCALED( y, u, v, r, g, b ) \
+ r = ((1192 * ( y - 16 ) + 1634 * ( v - 128 ) ) >> 10 ); \
+ g = ((1192 * ( y - 16 ) - 832 * ( v - 128 ) - 401 * ( u - 128 ) ) >> 10 ); \
+ b = ((1192 * ( y - 16 ) + 2066 * ( u - 128 ) ) >> 10 ); \
+ r = r < 0 ? 0 : r > 255 ? 255 : r; \
+ g = g < 0 ? 0 : g > 255 ? 255 : g; \
+ b = b < 0 ? 0 : b > 255 ? 255 : b;
+
#endif