X-Git-Url: http://research.m1stereo.tv/gitweb?a=blobdiff_plain;f=src%2Fframework%2Fmlt_frame.h;h=f24ef3eb13abd68a2c9ed09dd72dc1a79352e3c7;hb=984db4a3f9c364445f9a31f282f3614cf5e1e5af;hp=e288c1b5ac39296606dc08ed219510ddc3d91a35;hpb=2a800ec4c840132c7a629b764b673dce09771637;p=melted diff --git a/src/framework/mlt_frame.h b/src/framework/mlt_frame.h index e288c1b..f24ef3e 100644 --- a/src/framework/mlt_frame.h +++ b/src/framework/mlt_frame.h @@ -1,21 +1,23 @@ -/* - * mlt_frame.h -- interface for all frame classes - * Copyright (C) 2003-2004 Ushodaya Enterprises Limited - * Author: Charles Yates +/** + * \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 * - * 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_ @@ -23,67 +25,101 @@ #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_image )( mlt_frame this, uint8_t **buffer, mlt_image_format *format, int *width, int *height, int writable ); +/** callback function to get audio data + * + */ + +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 + /* 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 int mlt_frame_push_audio( mlt_frame this, void *that ); -extern void *mlt_frame_pop_audio( 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 ); -/* 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 = ((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 + 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;\ @@ -95,5 +131,13 @@ extern int mlt_sample_calculator( float fps, int frequency, int64_t position ); u = u > 240 ? 240 : u;\ v = v > 240 ? 240 : v -#endif +/** 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