-/*
- * 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
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
+ * Copyright (C) 2003-2008 Ushodaya Enterprises Limited
+ * \author Charles Yates <charles.yates@pandora.be>
*
- * This program is distributed in the hope that it will be useful,
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
*
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _MLT_FRAME_H_
#include "mlt_properties.h"
#include "mlt_deque.h"
+#include "mlt_service.h"
-typedef enum
-{
- mlt_image_none = 0,
- mlt_image_rgb24,
- mlt_image_rgb24a,
- mlt_image_yuv422,
- mlt_image_yuv420p
-}
-mlt_image_format;
-
-typedef enum
-{
- mlt_video_standard_pal = 0,
- mlt_video_standard_ntsc
-}
-mlt_video_standard;
+/** callback function to get video data
+ *
+ */
-typedef enum
-{
- mlt_audio_none = 0,
- mlt_audio_pcm
-}
-mlt_audio_format;
+typedef int ( *mlt_get_image )( mlt_frame self, uint8_t **buffer, mlt_image_format *format, int *width, int *height, int writable );
+
+/** callback function to get audio data
+ *
+ */
-typedef int ( *mlt_get_image )( mlt_frame this, 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 );
+
+/** \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
{
- // We're extending properties here
+ /* We're extending properties here */
struct mlt_properties_s parent;
- // Virtual methods
- int ( *get_audio )( mlt_frame this, int16_t **buffer, mlt_audio_format *format, int *frequency, int *channels, int *samples );
- uint8_t * ( *get_alpha_mask )( mlt_frame this );
-
- // Private properties
- mlt_deque stack_get_image;
- mlt_deque stack_frame;
+ /* Virtual methods */
+ uint8_t * ( *get_alpha_mask )( mlt_frame self );
+
+ /* Private properties */
+ mlt_deque stack_image;
+ mlt_deque stack_audio;
mlt_deque stack_service;
};
-extern mlt_frame mlt_frame_init( );
-extern mlt_properties mlt_frame_properties( mlt_frame this );
-extern int mlt_frame_is_test_card( mlt_frame this );
-extern int mlt_frame_is_test_audio( mlt_frame this );
-extern double mlt_frame_get_aspect_ratio( mlt_frame this );
-extern int mlt_frame_set_aspect_ratio( mlt_frame this, double value );
-extern mlt_position mlt_frame_get_position( mlt_frame this );
-extern int mlt_frame_set_position( mlt_frame this, mlt_position value );
-
-extern int mlt_frame_get_image( mlt_frame this, uint8_t **buffer, mlt_image_format *format, int *width, int *height, int writable );
-extern uint8_t *mlt_frame_get_alpha_mask( mlt_frame this );
-extern int mlt_frame_get_audio( mlt_frame this, int16_t **buffer, mlt_audio_format *format, int *frequency, int *channels, int *samples );
-
-extern int mlt_frame_push_get_image( mlt_frame this, mlt_get_image get_image );
-extern mlt_get_image mlt_frame_pop_get_image( mlt_frame this );
-extern int mlt_frame_push_frame( mlt_frame this, mlt_frame that );
-extern mlt_frame mlt_frame_pop_frame( mlt_frame this );
-extern int mlt_frame_push_service( mlt_frame this, void *that );
-extern void *mlt_frame_pop_service( mlt_frame this );
-extern void mlt_frame_close( mlt_frame this );
+#define MLT_FRAME_PROPERTIES( frame ) ( &( frame )->parent )
+#define MLT_FRAME_SERVICE_STACK( frame ) ( ( frame )->stack_service )
+#define MLT_FRAME_IMAGE_STACK( frame ) ( ( frame )->stack_image )
+#define MLT_FRAME_AUDIO_STACK( frame ) ( ( frame )->stack_audio )
+
+extern mlt_frame mlt_frame_init( mlt_service service );
+extern mlt_properties mlt_frame_properties( mlt_frame self );
+extern int mlt_frame_is_test_card( mlt_frame self );
+extern int mlt_frame_is_test_audio( mlt_frame self );
+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 int mlt_frame_set_position( mlt_frame self, mlt_position value );
+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 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 int mlt_frame_push_frame( mlt_frame self, mlt_frame that );
+extern mlt_frame mlt_frame_pop_frame( mlt_frame self );
+extern int mlt_frame_push_service( mlt_frame self, void *that );
+extern void *mlt_frame_pop_service( mlt_frame self );
+extern int mlt_frame_push_service_int( mlt_frame self, int that );
+extern int mlt_frame_pop_service_int( mlt_frame self );
+extern int mlt_frame_push_audio( mlt_frame self, void *that );
+extern void *mlt_frame_pop_audio( mlt_frame self );
+extern mlt_deque mlt_frame_service_stack( mlt_frame self );
+extern mlt_producer mlt_frame_get_original_producer( 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 this, int owidth, int oheight );
-extern uint8_t *mlt_frame_rescale_yuv422( mlt_frame this, int owidth, int oheight );
+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 this, 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_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 );
-#endif
+/** 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. **/
+#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;\
+ v = ((500*r - 419*g - 81*b) >> 10) + 128;\
+ y = y < 16 ? 16 : y;\
+ u = u < 16 ? 16 : u;\
+ v = v < 16 ? 16 : v;\
+ y = y > 235 ? 235 : y;\
+ 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 ); \
+ 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
projects / melted / blobdiff