-/*
- * 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
*
- * 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) 2003-2013 Ushodaya Enterprises Limited
+ * \author Charles Yates <charles.yates@pandora.be>
+ * \author Dan Dennedy <dan@dennedy.org>
*
- * 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"
+
+/** 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
+ *
+ * The frame is the primary data object that gets passed around to and through services.
+ *
+ * \extends mlt_properties
+ * \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
+ * \properties \em previous \em frame a reference to the unfiltered preceding frame
+ * (no speed factor applied, only available when \em _need_previous_next is set on the producer)
+ * \properties \em next \em frame a reference to the unfiltered following frame
+ * (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
{
- // We're extending properties here
- struct mlt_properties_s parent;
+ struct mlt_properties_s parent; /**< \private A frame extends properties. */
- // Virtual methods
+ /** Get the alpha channel (callback function).
+ * \param self a frame
+ * \return the 8-bit alpha channel
+ */
uint8_t * ( *get_alpha_mask )( mlt_frame self );
-
- // Private properties
- mlt_deque stack_image;
- mlt_deque stack_audio;
- mlt_deque stack_service;
+
+ /** Convert the image format (callback function).
+ * \param self a frame
+ * \param[in,out] image a buffer of image data
+ * \param[in,out] input the image format of supplied image data
+ * \param output the image format to which to convert
+ * \return true if error
+ */
+ int ( *convert_image )( mlt_frame self, uint8_t **image, mlt_image_format *input, mlt_image_format output );
+
+ /** Convert the audio format (callback function).
+ * \param self a frame
+ * \param[in,out] audio a buffer of audio data
+ * \param[in,out] input the audio format of supplied data
+ * \param output the audio format to which to convert
+ * \return true if error
+ */
+ int ( *convert_audio )( mlt_frame self, void **audio, mlt_audio_format *input, mlt_audio_format output );
+
+ mlt_deque stack_image; /**< \private the image processing stack of operations and data */
+ mlt_deque stack_audio; /**< \private the audio processing stack of operations and data */
+ mlt_deque stack_service; /**< \private a general purpose data stack */
+ int is_processing; /**< \private indicates if a frame is or was processed by the parallel consumer */
};
#define MLT_FRAME_PROPERTIES( frame ) ( &( frame )->parent )
#define MLT_FRAME_IMAGE_STACK( frame ) ( ( frame )->stack_image )
#define MLT_FRAME_AUDIO_STACK( frame ) ( ( frame )->stack_audio )
-extern mlt_frame mlt_frame_init( );
+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 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 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 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 );
+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_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_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_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 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. */
+#define RGB2YUV_601_SCALED(r, g, b, y, u, v)\
+ y = ((263*r + 516*g + 100*b) >> 10) + 16;\
+ u = ((-152*r - 300*g + 450*b) >> 10) + 128;\
+ v = ((450*r - 377*g - 73*b) >> 10) + 128;
-/* 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 = ((257*r + 504*g + 98*b) >> 10) + 16;\
- u = ((-148*r - 291*g + 439*b) >> 10) + 128;\
- v = ((439*r - 368*g - 71*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 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 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
projects / mlt / blobdiff