7988037da5125dd311e96eac588b5214dea5fb26
2 * mlt_frame.h -- interface for all frame classes
3 * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
4 * Author: Charles Yates <charles.yates@pandora.be>
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 #include "mlt_properties.h"
25 #include "mlt_deque.h"
27 typedef int ( *mlt_get_image
)( mlt_frame self
, uint8_t **buffer
, mlt_image_format
*format
, int *width
, int *height
, int writable
);
28 typedef int ( *mlt_get_audio
)( mlt_frame self
, int16_t **buffer
, mlt_audio_format
*format
, int *frequency
, int *channels
, int *samples
);
32 /* We're extending properties here */
33 struct mlt_properties_s parent
;
36 uint8_t * ( *get_alpha_mask
)( mlt_frame self
);
38 /* Private properties */
39 mlt_deque stack_image
;
40 mlt_deque stack_audio
;
41 mlt_deque stack_service
;
44 #define MLT_FRAME_PROPERTIES( frame ) ( &( frame )->parent )
45 #define MLT_FRAME_SERVICE_STACK( frame ) ( ( frame )->stack_service )
46 #define MLT_FRAME_IMAGE_STACK( frame ) ( ( frame )->stack_image )
47 #define MLT_FRAME_AUDIO_STACK( frame ) ( ( frame )->stack_audio )
49 extern mlt_frame
mlt_frame_init( );
50 extern mlt_properties
mlt_frame_properties( mlt_frame self
);
51 extern int mlt_frame_is_test_card( mlt_frame self
);
52 extern int mlt_frame_is_test_audio( mlt_frame self
);
53 extern double mlt_frame_get_aspect_ratio( mlt_frame self
);
54 extern int mlt_frame_set_aspect_ratio( mlt_frame self
, double value
);
55 extern mlt_position
mlt_frame_get_position( mlt_frame self
);
56 extern int mlt_frame_set_position( mlt_frame self
, mlt_position value
);
57 extern void mlt_frame_replace_image( mlt_frame self
, uint8_t *image
, mlt_image_format format
, int width
, int height
);
58 extern int mlt_frame_get_image( mlt_frame self
, uint8_t **buffer
, mlt_image_format
*format
, int *width
, int *height
, int writable
);
59 extern uint8_t *mlt_frame_get_alpha_mask( mlt_frame self
);
60 extern int mlt_frame_get_audio( mlt_frame self
, int16_t **buffer
, mlt_audio_format
*format
, int *frequency
, int *channels
, int *samples
);
61 extern unsigned char *mlt_frame_get_waveform( mlt_frame self
, int w
, int h
);
62 extern int mlt_frame_push_get_image( mlt_frame self
, mlt_get_image get_image
);
63 extern mlt_get_image
mlt_frame_pop_get_image( mlt_frame self
);
64 extern int mlt_frame_push_frame( mlt_frame self
, mlt_frame that
);
65 extern mlt_frame
mlt_frame_pop_frame( mlt_frame self
);
66 extern int mlt_frame_push_service( mlt_frame self
, void *that
);
67 extern void *mlt_frame_pop_service( mlt_frame self
);
68 extern int mlt_frame_push_service_int( mlt_frame self
, int that
);
69 extern int mlt_frame_pop_service_int( mlt_frame self
);
70 extern int mlt_frame_push_audio( mlt_frame self
, void *that
);
71 extern void *mlt_frame_pop_audio( mlt_frame self
);
72 extern mlt_deque
mlt_frame_service_stack( mlt_frame self
);
73 extern mlt_producer
mlt_frame_get_original_producer( mlt_frame self
);
74 extern void mlt_frame_close( mlt_frame self
);
76 /* convenience functions */
77 extern int mlt_convert_yuv422_to_rgb24a( uint8_t *yuv
, uint8_t *rgba
, unsigned int total
);
78 extern int mlt_convert_rgb24a_to_yuv422( uint8_t *rgba
, int width
, int height
, int stride
, uint8_t *yuv
, uint8_t *alpha
);
79 extern int mlt_convert_rgb24_to_yuv422( uint8_t *rgb
, int width
, int height
, int stride
, uint8_t *yuv
);
80 extern int mlt_convert_bgr24a_to_yuv422( uint8_t *rgba
, int width
, int height
, int stride
, uint8_t *yuv
, uint8_t *alpha
);
81 extern int mlt_convert_argb_to_yuv422( uint8_t *rgba
, int width
, int height
, int stride
, uint8_t *yuv
, uint8_t *alpha
);
82 extern int mlt_convert_bgr24_to_yuv422( uint8_t *rgb
, int width
, int height
, int stride
, uint8_t *yuv
);
83 extern int mlt_convert_yuv420p_to_yuv422( uint8_t *yuv420p
, int width
, int height
, int stride
, uint8_t *yuv
);
84 extern uint8_t *mlt_frame_resize_yuv422( mlt_frame self
, int owidth
, int oheight
);
85 extern uint8_t *mlt_frame_rescale_yuv422( mlt_frame self
, int owidth
, int oheight
);
86 extern void mlt_resize_yuv422( uint8_t *output
, int owidth
, int oheight
, uint8_t *input
, int iwidth
, int iheight
);
87 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
);
88 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
);
89 extern int mlt_sample_calculator( float fps
, int frequency
, int64_t position
);
90 extern int64_t mlt_sample_calculator_to_now( float fps
, int frequency
, int64_t position
);
92 /* this macro scales rgb into the yuv gamut, y is scaled by 219/255 and uv by 224/255 */
93 #define RGB2YUV(r, g, b, y, u, v)\
94 y = ((263*r + 516*g + 100*b) >> 10) + 16;\
95 u = ((-152*r - 298*g + 450*b) >> 10) + 128;\
96 v = ((450*r - 377*g - 73*b) >> 10) + 128;
98 /* this macro assumes the user has already scaled their rgb down into the broadcast limits */
99 #define RGB2YUV_UNSCALED(r, g, b, y, u, v)\
100 y = (299*r + 587*g + 114*b) >> 10;\
101 u = ((-169*r - 331*g + 500*b) >> 10) + 128;\
102 v = ((500*r - 419*g - 81*b) >> 10) + 128;\
103 y = y < 16 ? 16 : y;\
104 u = u < 16 ? 16 : u;\
105 v = v < 16 ? 16 : v;\
106 y = y > 235 ? 235 : y;\
107 u = u > 240 ? 240 : u;\
108 v = v > 240 ? 240 : v
110 #define YUV2RGB( y, u, v, r, g, b ) \
111 r = ((1192 * ( y - 16 ) + 1634 * ( v - 128 ) ) >> 10 ); \
112 g = ((1192 * ( y - 16 ) - 832 * ( v - 128 ) - 400 * ( u - 128 ) ) >> 10 ); \
113 b = ((1192 * ( y - 16 ) + 2066 * ( u - 128 ) ) >> 10 ); \
114 r = r < 0 ? 0 : r > 255 ? 255 : r; \
115 g = g < 0 ? 0 : g > 255 ? 255 : g; \
116 b = b < 0 ? 0 : b > 255 ? 255 : b;