-/*
- * mlt_frame.h -- interface for all frame classes
- * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
- * Author: Charles Yates <charles.yates@pandora.be>
+/**
+ * \file mlt_frame.h
+ * \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
#include "mlt_deque.h"
#include "mlt_service.h"
+/** callback function to get video data
+ *
+ */
+
typedef int ( *mlt_get_image )( mlt_frame self, uint8_t **buffer, mlt_image_format *format, int *width, int *height, int writable );
-typedef int ( *mlt_get_audio )( mlt_frame self, int16_t **buffer, mlt_audio_format *format, int *frequency, int *channels, int *samples );
+
+/** callback function to get audio data
+ *
+ */
+
+typedef int ( *mlt_get_audio )( mlt_frame self, void **buffer, mlt_audio_format *format, int *frequency, int *channels, int *samples );
+
+/** \brief Frame class
+ *
+ * \properties \em test_image set if the frame holds a "test card" image
+ * \properties \em test_audio set if the frame holds "test card" audio
+ * \properties \em _producer holds a reference to the frame's end producer
+ * \properties \em _speed the current speed of the producer that generated the frame
+ * \properties \em _position the position of the frame
+ * \properties \em meta.* holds metadata
+ * \properties \em hide set to 1 to hide the video, 2 to mute the audio
+ * \properties \em last_track a flag to indicate an end-of-tracks frame
+ */
struct mlt_frame_s
{
/* Virtual methods */
uint8_t * ( *get_alpha_mask )( mlt_frame self );
-
+ int ( *convert_image )( mlt_frame self, uint8_t **image, mlt_image_format *input, mlt_image_format output );
+ int ( *convert_audio )( mlt_frame self, void **audio, mlt_audio_format *input, mlt_audio_format output );
+
/* Private properties */
mlt_deque stack_image;
mlt_deque stack_audio;
extern void mlt_frame_replace_image( mlt_frame self, uint8_t *image, mlt_image_format format, int width, int height );
extern int mlt_frame_get_image( mlt_frame self, uint8_t **buffer, mlt_image_format *format, int *width, int *height, int writable );
extern uint8_t *mlt_frame_get_alpha_mask( mlt_frame self );
-extern int mlt_frame_get_audio( mlt_frame self, int16_t **buffer, mlt_audio_format *format, int *frequency, int *channels, int *samples );
+extern int mlt_frame_get_audio( mlt_frame self, void **buffer, mlt_audio_format *format, int *frequency, int *channels, int *samples );
+extern int mlt_frame_set_audio( mlt_frame self, void *buffer, mlt_audio_format, int size, mlt_destructor );
extern unsigned char *mlt_frame_get_waveform( mlt_frame self, int w, int h );
extern int mlt_frame_push_get_image( mlt_frame self, mlt_get_image get_image );
extern mlt_get_image mlt_frame_pop_get_image( mlt_frame self );
extern void mlt_frame_close( mlt_frame self );
/* convenience functions */
-extern int mlt_convert_yuv422_to_rgb24a( uint8_t *yuv, uint8_t *rgba, unsigned int total );
-extern int mlt_convert_rgb24a_to_yuv422( uint8_t *rgba, int width, int height, int stride, uint8_t *yuv, uint8_t *alpha );
-extern int mlt_convert_rgb24_to_yuv422( uint8_t *rgb, int width, int height, int stride, uint8_t *yuv );
-extern int mlt_convert_bgr24a_to_yuv422( uint8_t *rgba, int width, int height, int stride, uint8_t *yuv, uint8_t *alpha );
-extern int mlt_convert_argb_to_yuv422( uint8_t *rgba, int width, int height, int stride, uint8_t *yuv, uint8_t *alpha );
-extern int mlt_convert_bgr24_to_yuv422( uint8_t *rgb, int width, int height, int stride, uint8_t *yuv );
-extern int mlt_convert_yuv420p_to_yuv422( uint8_t *yuv420p, int width, int height, int stride, uint8_t *yuv );
-extern uint8_t *mlt_frame_resize_yuv422( mlt_frame self, int owidth, int oheight );
-extern uint8_t *mlt_frame_rescale_yuv422( mlt_frame self, int owidth, int oheight );
-extern void mlt_resize_yuv422( uint8_t *output, int owidth, int oheight, uint8_t *input, int iwidth, int iheight );
-extern int mlt_frame_mix_audio( mlt_frame self, mlt_frame that, float weight_start, float weight_end, int16_t **buffer, mlt_audio_format *format, int *frequency, int *channels, int *samples );
-extern int mlt_frame_combine_audio( mlt_frame self, mlt_frame that, int16_t **buffer, mlt_audio_format *format, int *frequency, int *channels, int *samples );
extern int mlt_sample_calculator( float fps, int frequency, int64_t position );
extern int64_t mlt_sample_calculator_to_now( float fps, int frequency, int64_t position );
+extern const char * mlt_image_format_name( mlt_image_format format );
+extern const char * mlt_audio_format_name( mlt_audio_format format );
-/* this macro scales rgb into the yuv gamut, y is scaled by 219/255 and uv by 224/255 */
+/** 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 = ((263*r + 516*g + 100*b) >> 10) + 16;\
u = ((-152*r - 298*g + 450*b) >> 10) + 128;\
v = ((450*r - 377*g - 73*b) >> 10) + 128;
-/* this macro assumes the user has already scaled their rgb down into the broadcast limits */
+/** 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;\
u = u > 240 ? 240 : u;\
v = v > 240 ? 240 : v
+/** This macro converts a YUV value to the RGB color space. */
#define YUV2RGB( y, u, v, r, g, b ) \
r = ((1192 * ( y - 16 ) + 1634 * ( v - 128 ) ) >> 10 ); \
g = ((1192 * ( y - 16 ) - 832 * ( v - 128 ) - 400 * ( u - 128 ) ) >> 10 ); \
projects / mlt / blobdiff