MLT 7.28.0
mlt_frame.h
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1
23#ifndef MLT_FRAME_H
24#define MLT_FRAME_H
25
26#include "mlt_audio.h"
27#include "mlt_deque.h"
28#include "mlt_image.h"
29#include "mlt_properties.h"
30#include "mlt_service.h"
31
36typedef int (*mlt_get_image)(mlt_frame self,
37 uint8_t **buffer,
38 mlt_image_format *format,
39 int *width,
40 int *height,
41 int writable);
42
47typedef int (*mlt_get_audio)(mlt_frame self,
48 void **buffer,
49 mlt_audio_format *format,
50 int *frequency,
51 int *channels,
52 int *samples);
53
90{
101 uint8_t **image,
102 mlt_image_format *input,
103 mlt_image_format output);
104
113 void **audio,
114 mlt_audio_format *input,
115 mlt_audio_format output);
116
121};
122
123#define MLT_FRAME_PROPERTIES(frame) (&(frame)->parent)
124#define MLT_FRAME_SERVICE_STACK(frame) ((frame)->stack_service)
125#define MLT_FRAME_IMAGE_STACK(frame) ((frame)->stack_image)
126#define MLT_FRAME_AUDIO_STACK(frame) ((frame)->stack_audio)
127
133extern int mlt_frame_set_aspect_ratio(mlt_frame self, double value);
137extern int mlt_frame_set_image(mlt_frame self, uint8_t *image, int size, mlt_destructor destroy);
138extern int mlt_frame_set_alpha(mlt_frame self, uint8_t *alpha, int size, mlt_destructor destroy);
140 mlt_frame self, uint8_t *image, mlt_image_format format, int width, int height);
142 uint8_t **buffer,
143 mlt_image_format *format,
144 int *width,
145 int *height,
146 int writable);
147extern uint8_t *mlt_frame_get_alpha(mlt_frame self);
148extern uint8_t *mlt_frame_get_alpha_size(mlt_frame self, int *size);
150 void **buffer,
151 mlt_audio_format *format,
152 int *frequency,
153 int *channels,
154 int *samples);
156 mlt_frame self, void *buffer, mlt_audio_format, int size, mlt_destructor);
157extern unsigned char *mlt_frame_get_waveform(mlt_frame self, int w, int h);
162extern int mlt_frame_push_service(mlt_frame self, void *that);
164extern int mlt_frame_push_service_int(mlt_frame self, int that);
166extern int mlt_frame_push_audio(mlt_frame self, void *that);
170extern void mlt_frame_close(mlt_frame self);
173extern mlt_frame mlt_frame_clone(mlt_frame self, int is_deep);
174extern mlt_frame mlt_frame_clone_audio(mlt_frame self, int is_deep);
175extern mlt_frame mlt_frame_clone_image(mlt_frame self, int is_deep);
176
177/* convenience functions */
178extern void mlt_frame_write_ppm(mlt_frame frame);
179
181#define RGB2YUV_601_SCALED(r, g, b, y, u, v) \
182 y = ((263 * r + 516 * g + 100 * b) >> 10) + 16; \
183 u = ((-152 * r - 300 * g + 450 * b) >> 10) + 128; \
184 v = ((450 * r - 377 * g - 73 * b) >> 10) + 128;
186#define RGB2UV_601_SCALED(r, g, b, u, v) \
187 u = ((-152 * r - 300 * g + 450 * b) >> 10) + 128; \
188 v = ((450 * r - 377 * g - 73 * b) >> 10) + 128;
189
191#define YUV2RGB_601_SCALED(y, u, v, r, g, b) \
192 r = ((1192 * (y - 16) + 1634 * (v - 128)) >> 10); \
193 g = ((1192 * (y - 16) - 832 * (v - 128) - 401 * (u - 128)) >> 10); \
194 b = ((1192 * (y - 16) + 2066 * (u - 128)) >> 10); \
195 r = r < 0 ? 0 : r > 255 ? 255 : r; \
196 g = g < 0 ? 0 : g > 255 ? 255 : g; \
197 b = b < 0 ? 0 : b > 255 ? 255 : b;
198
199#endif
Audio class.
double ended queue
mlt_position mlt_frame_get_position(mlt_frame self)
uint8_t * mlt_frame_get_alpha_size(mlt_frame self, int *size)
double mlt_frame_get_aspect_ratio(mlt_frame self)
int mlt_frame_set_alpha(mlt_frame self, uint8_t *alpha, int size, mlt_destructor destroy)
int mlt_frame_push_audio(mlt_frame self, void *that)
mlt_properties mlt_frame_unique_properties(mlt_frame self, mlt_service service)
int mlt_frame_is_test_card(mlt_frame self)
mlt_frame mlt_frame_clone(mlt_frame self, int is_deep)
void mlt_frame_write_ppm(mlt_frame frame)
Definition mlt_frame.c:834
int mlt_frame_set_aspect_ratio(mlt_frame self, double value)
mlt_frame mlt_frame_pop_frame(mlt_frame self)
int mlt_frame_set_image(mlt_frame self, uint8_t *image, int size, mlt_destructor destroy)
mlt_frame mlt_frame_init(mlt_service service)
int mlt_frame_is_test_audio(mlt_frame self)
mlt_frame mlt_frame_clone_audio(mlt_frame self, int is_deep)
int mlt_frame_set_position(mlt_frame self, mlt_position value)
mlt_properties mlt_frame_properties(mlt_frame self)
void mlt_frame_close(mlt_frame self)
void mlt_frame_replace_image(mlt_frame self, uint8_t *image, mlt_image_format format, int width, int height)
int mlt_frame_pop_service_int(mlt_frame self)
int mlt_frame_push_service_int(mlt_frame self, int that)
int mlt_frame_push_get_image(mlt_frame self, mlt_get_image get_image)
mlt_producer mlt_frame_get_original_producer(mlt_frame self)
int mlt_frame_push_service(mlt_frame self, void *that)
mlt_deque mlt_frame_service_stack(mlt_frame self)
mlt_position mlt_frame_original_position(mlt_frame self)
int mlt_frame_get_audio(mlt_frame self, void **buffer, mlt_audio_format *format, int *frequency, int *channels, int *samples)
int mlt_frame_set_audio(mlt_frame self, void *buffer, mlt_audio_format, int size, mlt_destructor)
void * mlt_frame_pop_service(mlt_frame self)
mlt_properties mlt_frame_get_unique_properties(mlt_frame self, mlt_service service)
int mlt_frame_get_image(mlt_frame self, uint8_t **buffer, mlt_image_format *format, int *width, int *height, int writable)
mlt_get_image mlt_frame_pop_get_image(mlt_frame self)
mlt_frame mlt_frame_clone_image(mlt_frame self, int is_deep)
unsigned char * mlt_frame_get_waveform(mlt_frame self, int w, int h)
int(* mlt_get_image)(mlt_frame self, uint8_t **buffer, mlt_image_format *format, int *width, int *height, int writable)
Callback function to get video data.
Definition mlt_frame.h:36
int mlt_frame_push_frame(mlt_frame self, mlt_frame that)
int(* mlt_get_audio)(mlt_frame self, void **buffer, mlt_audio_format *format, int *frequency, int *channels, int *samples)
Callback function to get audio data.
Definition mlt_frame.h:47
void * mlt_frame_pop_audio(mlt_frame self)
uint8_t * mlt_frame_get_alpha(mlt_frame self)
Image class.
Properties class declaration.
interface declaration for all service classes
int32_t mlt_position
Definition mlt_types.h:217
void(* mlt_destructor)(void *)
pointer to destructor function
Definition mlt_types.h:269
mlt_image_format
The set of supported image formats.
Definition mlt_types.h:44
mlt_audio_format
The set of supported audio formats.
Definition mlt_types.h:60
Double-Ended Queue (deque) class.
Definition mlt_deque.c:48
Frame class.
Definition mlt_frame.h:90
mlt_deque stack_service
a general purpose data stack
Definition mlt_frame.h:119
int(* convert_image)(mlt_frame self, uint8_t **image, mlt_image_format *input, mlt_image_format output)
Convert the image format (callback function).
Definition mlt_frame.h:100
int is_processing
indicates if a frame is or was processed by the parallel consumer
Definition mlt_frame.h:120
struct mlt_properties_s parent
A frame extends properties.
Definition mlt_frame.h:91
mlt_deque stack_image
the image processing stack of operations and data
Definition mlt_frame.h:117
int(* convert_audio)(mlt_frame self, void **audio, mlt_audio_format *input, mlt_audio_format output)
Convert the audio format (callback function).
Definition mlt_frame.h:112
mlt_deque stack_audio
the audio processing stack of operations and data
Definition mlt_frame.h:118
Producer abstract service class.
Definition mlt_producer.h:70
Properties class.
Definition mlt_properties.h:40
Service abstract base class.
Definition mlt_service.h:58