git.sesse.net Git - mlt/blob - src/modules/opengl/filter_movit_convert.cpp

   1 /*
   2  * filter_movit_convert.cpp
   3  * Copyright (C) 2013 Dan Dennedy <dan@dennedy.org>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software Foundation,
  17  * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 #include <framework/mlt.h>
  21 #include <string.h>
  22 #include <stdlib.h>
  23 #include <assert.h>
  24
  25 #include "glsl_manager.h"
  26 #include <movit/effect_chain.h>
  27 #include <movit/util.h>
  28 #include "mlt_movit_input.h"
  29 #include <mlt++/MltProducer.h>
  30 #include "mlt_flip_effect.h"
  31
  32 static void yuv422_to_yuv422p( uint8_t *yuv422, uint8_t *yuv422p, int width, int height )
  33 {
  34         uint8_t *Y = yuv422p;
  35         uint8_t *U = Y + width * height;
  36         uint8_t *V = U + width * height / 2;
  37         int n = width * height / 2 + 1;
  38         while ( --n ) {
  39                 *Y++ = *yuv422++;
  40                 *U++ = *yuv422++;
  41                 *Y++ = *yuv422++;
  42                 *V++ = *yuv422++;
  43         }
  44 }
  45
  46 static int convert_on_cpu( mlt_frame frame, uint8_t **image, mlt_image_format *format, mlt_image_format output_format )
  47 {
  48         int error = 0;
  49         mlt_filter cpu_csc = (mlt_filter) mlt_properties_get_data( MLT_FRAME_PROPERTIES( frame ), "cpu_csc", NULL );
  50         if ( cpu_csc ) {
  51                 int (* save_fp )( mlt_frame self, uint8_t **image, mlt_image_format *input, mlt_image_format output )
  52                         = frame->convert_image;
  53                 frame->convert_image = NULL;
  54                 mlt_filter_process( cpu_csc, frame );
  55                 error = frame->convert_image( frame, image, format, output_format );
  56                 frame->convert_image = save_fp;
  57         } else {
  58                 error = 1;
  59         }
  60         return error;
  61 }
  62
  63 static void delete_chain( EffectChain* chain )
  64 {
  65         delete chain;
  66 }
  67
  68 static int convert_image( mlt_frame frame, uint8_t **image, mlt_image_format *format, mlt_image_format output_format )
  69 {
  70         // Nothing to do!
  71         if ( *format == output_format )
  72                 return 0;
  73
  74         mlt_properties properties = MLT_FRAME_PROPERTIES( frame );
  75
  76         mlt_log_debug( NULL, "filter_movit_convert: %s -> %s\n",
  77                 mlt_image_format_name( *format ), mlt_image_format_name( output_format ) );
  78
  79         // Use CPU if glsl not initialized or not supported.
  80         GlslManager* glsl = GlslManager::get_instance();
  81         if ( !glsl || !glsl->get_int("glsl_supported" ) )
  82                 return convert_on_cpu( frame, image, format, output_format );
  83
  84         // Do non-GL image conversions on a CPU-based image converter.
  85         if ( *format != mlt_image_glsl && output_format != mlt_image_glsl && output_format != mlt_image_glsl_texture )
  86                 return convert_on_cpu( frame, image, format, output_format );
  87
  88         int error = 0;
  89         int width = mlt_properties_get_int( properties, "width" );
  90         int height = mlt_properties_get_int( properties, "height" );
  91         int img_size = mlt_image_format_size( *format, width, height, NULL );
  92         mlt_producer producer = mlt_producer_cut_parent( mlt_frame_get_original_producer( frame ) );
  93         mlt_service service = MLT_PRODUCER_SERVICE(producer);
  94         GlslManager::get_instance()->lock_service( frame );
  95         EffectChain* chain = GlslManager::get_chain( service );
  96         MltInput* input = GlslManager::get_input( service );
  97
  98         if ( !chain || !input ) {
  99                 GlslManager::get_instance()->unlock_service( frame );
 100                 return 2;
 101         }
 102
 103         if ( *format != mlt_image_glsl ) {
 104                 bool finalize_chain = false;
 105                 if ( output_format == mlt_image_glsl_texture ) {
 106                         // We might already have a texture from a previous conversion from mlt_image_glsl.
 107                         glsl_texture texture = (glsl_texture) mlt_properties_get_data( properties, "movit.convert.texture", NULL );
 108                         // XXX: requires a special property set on the frame by the app for now
 109                         // because we do not have reliable way to clear the texture property
 110                         // when a downstream filter has changed image.
 111                         if ( texture && mlt_properties_get_int( properties, "movit.convert.use_texture") ) {
 112                                 *image = (uint8_t*) &texture->texture;
 113                                 mlt_frame_set_image( frame, *image, 0, NULL );
 114                                 mlt_properties_set_int( properties, "format", output_format );
 115                                 *format = output_format;
 116                                 GlslManager::get_instance()->unlock_service( frame );
 117                                 return error;
 118                         } else {
 119                                 // Use a separate chain to convert image in RAM to OpenGL texture.
 120                                 // Use cached chain if available and compatible.
 121                                 Mlt::Producer producer( mlt_producer_cut_parent( mlt_frame_get_original_producer( frame ) ) );
 122                                 chain = (EffectChain*) producer.get_data( "movit.convert.chain" );
 123                                 input = (MltInput*) producer.get_data( "movit.convert.input" );
 124                                 int w = producer.get_int( "movit.convert.width" );
 125                                 int h = producer.get_int( "movit.convert.height" );
 126                                 mlt_image_format f = (mlt_image_format) producer.get_int( "movit.convert.format" );
 127                                 if ( !chain || width != w || height != h || output_format != f ) {
 128                                         chain = new EffectChain( width, height );
 129                                         input = new MltInput( width, height );
 130                                         chain->add_input( input );
 131                                         chain->add_effect( new Mlt::VerticalFlip() );
 132                                         finalize_chain = true;
 133                                         producer.set( "movit.convert.chain", chain, 0, (mlt_destructor) delete_chain );
 134                                         producer.set( "movit.convert.width", width );
 135                                         producer.set( "movit.convert.height", height );
 136                                         producer.set( "movit.convert.width", output_format );
 137                                 }
 138                         }
 139                 }
 140                 if ( *format == mlt_image_rgb24a || *format == mlt_image_opengl ) {
 141                         input->useFlatInput( chain, FORMAT_RGBA_POSTMULTIPLIED_ALPHA, width, height );
 142                         input->set_pixel_data( *image );
 143                 }
 144                 else if ( *format == mlt_image_rgb24 ) {
 145                         input->useFlatInput( chain, FORMAT_RGB, width, height );
 146                         input->set_pixel_data( *image );
 147                 }
 148                 else if ( *format == mlt_image_yuv420p ) {
 149                         ImageFormat image_format;
 150                         YCbCrFormat ycbcr_format;
 151                         if ( 709 == mlt_properties_get_int( properties, "colorspace" ) ) {
 152                                 image_format.color_space = COLORSPACE_REC_709;
 153                                 image_format.gamma_curve = GAMMA_REC_709;
 154                                 ycbcr_format.luma_coefficients = YCBCR_REC_709;
 155                         } else if ( 576 == mlt_properties_get_int( properties, "height" ) ) {
 156                                 image_format.color_space = COLORSPACE_REC_601_625;
 157                                 image_format.gamma_curve = GAMMA_REC_601;
 158                                 ycbcr_format.luma_coefficients = YCBCR_REC_601;
 159                         } else {
 160                                 image_format.color_space = COLORSPACE_REC_601_525;
 161                                 image_format.gamma_curve = GAMMA_REC_601;
 162                                 ycbcr_format.luma_coefficients = YCBCR_REC_601;
 163                         }
 164                         ycbcr_format.full_range = mlt_properties_get_int( properties, "force_full_luma" );
 165                         ycbcr_format.chroma_subsampling_x = ycbcr_format.chroma_subsampling_y = 2;
 166                         // TODO: make new frame properties set by producers
 167                         ycbcr_format.cb_x_position = ycbcr_format.cr_x_position = 0.0f;
 168                         ycbcr_format.cb_y_position = ycbcr_format.cr_y_position = 0.5f;
 169                         input->useYCbCrInput( chain, image_format, ycbcr_format, width, height );
 170                         input->set_pixel_data( *image );
 171                 }
 172                 else if ( *format == mlt_image_yuv422 ) {
 173                         ImageFormat image_format;
 174                         YCbCrFormat ycbcr_format;
 175                         if ( 709 == mlt_properties_get_int( properties, "colorspace" ) ) {
 176                                 image_format.color_space = COLORSPACE_REC_709;
 177                                 image_format.gamma_curve = GAMMA_REC_709;
 178                                 ycbcr_format.luma_coefficients = YCBCR_REC_709;
 179                         } else if ( 576 == height ) {
 180                                 image_format.color_space = COLORSPACE_REC_601_625;
 181                                 image_format.gamma_curve = GAMMA_REC_601;
 182                                 ycbcr_format.luma_coefficients = YCBCR_REC_601;
 183                         } else {
 184                                 image_format.color_space = COLORSPACE_REC_601_525;
 185                                 image_format.gamma_curve = GAMMA_REC_601;
 186                                 ycbcr_format.luma_coefficients = YCBCR_REC_601;
 187                         }
 188                         ycbcr_format.full_range = mlt_properties_get_int( properties, "force_full_luma" );
 189                         ycbcr_format.chroma_subsampling_x = 2;
 190                         ycbcr_format.chroma_subsampling_y = 1;
 191                         // TODO: make new frame properties set by producers
 192                         ycbcr_format.cb_x_position = ycbcr_format.cr_x_position = 0.0f;
 193                         ycbcr_format.cb_y_position = ycbcr_format.cr_y_position = 0.5f;
 194                         input->useYCbCrInput( chain, image_format, ycbcr_format, width, height );
 195
 196                         // convert chunky to planar
 197                         uint8_t* planar = (uint8_t*) mlt_pool_alloc( img_size );
 198                         yuv422_to_yuv422p( *image, planar, width, height );
 199                         input->set_pixel_data( planar );
 200                         mlt_frame_set_image( frame, planar, img_size, mlt_pool_release );
 201                 }
 202                 // Finalize the separate conversion chain if needed.
 203                 if ( finalize_chain )
 204                         chain->finalize();
 205         }
 206
 207         if ( output_format != mlt_image_glsl ) {
 208                 glsl_fbo fbo = glsl->get_fbo( width, height );
 209
 210                 if ( output_format == mlt_image_glsl_texture ) {
 211                         glsl_texture texture = glsl->get_texture( width, height, GL_RGBA );
 212
 213                         glBindFramebuffer( GL_FRAMEBUFFER, fbo->fbo );
 214                         check_error();
 215                         glFramebufferTexture2D( GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture->texture, 0 );
 216                         check_error();
 217                         glBindFramebuffer( GL_FRAMEBUFFER, 0 );
 218                         check_error();
 219
 220                         GlslManager::render( service, chain, fbo->fbo, width, height );
 221
 222                         glFinish();
 223                         check_error();
 224                         glBindFramebuffer( GL_FRAMEBUFFER, 0 );
 225                         check_error();
 226
 227                         *image = (uint8_t*) &texture->texture;
 228                         mlt_frame_set_image( frame, *image, 0, NULL );
 229                         mlt_properties_set_data( properties, "movit.convert.texture", texture, 0,
 230                                 (mlt_destructor) GlslManager::release_texture, NULL );
 231                         mlt_properties_set_int( properties, "format", output_format );
 232                         *format = output_format;
 233                 }
 234                 else {
 235                         // Use a PBO to hold the data we read back with glReadPixels()
 236                         // (Intel/DRI goes into a slow path if we don't read to PBO)
 237                         GLenum gl_format = ( output_format == mlt_image_rgb24a || output_format == mlt_image_opengl )?
 238                                 GL_RGBA : GL_RGB;
 239                         img_size = width * height * ( gl_format == GL_RGB? 3 : 4 );
 240                         glsl_pbo pbo = glsl->get_pbo( img_size );
 241                         glsl_texture texture = glsl->get_texture( width, height, gl_format );
 242
 243                         if ( fbo && pbo && texture ) {
 244                                 // Set the FBO
 245                                 glBindFramebuffer( GL_FRAMEBUFFER, fbo->fbo );
 246                                 check_error();
 247                                 glFramebufferTexture2D( GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture->texture, 0 );
 248                                 check_error();
 249                                 glBindFramebuffer( GL_FRAMEBUFFER, 0 );
 250                                 check_error();
 251
 252                                 GlslManager::render( service, chain, fbo->fbo, width, height );
 253
 254                                 // Read FBO into PBO
 255                                 glBindBuffer( GL_PIXEL_PACK_BUFFER_ARB, pbo->pbo );
 256                                 check_error();
 257                                 glBufferData( GL_PIXEL_PACK_BUFFER_ARB, img_size, NULL, GL_STREAM_READ );
 258                                 check_error();
 259                                 glReadPixels( 0, 0, width, height, gl_format, GL_UNSIGNED_BYTE, BUFFER_OFFSET(0) );
 260                                 check_error();
 261
 262                                 // Copy from PBO
 263                                 uint8_t* buf = (uint8_t*) glMapBuffer( GL_PIXEL_PACK_BUFFER_ARB, GL_READ_ONLY );
 264                                 check_error();
 265                                 *image = (uint8_t*) mlt_pool_alloc( img_size );
 266                                 mlt_frame_set_image( frame, *image, img_size, mlt_pool_release );
 267                                 memcpy( *image, buf, img_size );
 268
 269                                 if ( output_format == mlt_image_yuv422 || output_format == mlt_image_yuv420p ) {
 270                                         *format = mlt_image_rgb24;
 271                                         error = convert_on_cpu( frame, image, format, output_format );
 272                                 }
 273
 274                                 // Release PBO and FBO
 275                                 glUnmapBuffer( GL_PIXEL_PACK_BUFFER_ARB );
 276                                 check_error();
 277                                 glBindBuffer( GL_PIXEL_PACK_BUFFER_ARB, 0 );
 278                                 check_error();
 279                                 glBindFramebuffer( GL_FRAMEBUFFER, 0 );
 280                                 check_error();
 281                                 glBindTexture( GL_TEXTURE_2D, 0 );
 282                                 check_error();
 283                                 mlt_properties_set_data( properties, "movit.convert.texture", texture, 0,
 284                                         (mlt_destructor) GlslManager::release_texture, NULL);
 285
 286                                 mlt_properties_set_int( properties, "format", output_format );
 287                                 *format = output_format;
 288                         }
 289                         else {
 290                                 error = 1;
 291                         }
 292                 }
 293                 if ( fbo ) GlslManager::release_fbo( fbo );
 294         }
 295         else {
 296                 mlt_properties_set_int( properties, "format", output_format );
 297                 *format = output_format;
 298         }
 299         GlslManager::get_instance()->unlock_service( frame );
 300
 301         return error;
 302 }
 303
 304 static mlt_frame process( mlt_filter filter, mlt_frame frame )
 305 {
 306         // Set a default colorspace on the frame if not yet set by the producer.
 307         // The producer may still change it during get_image.
 308         // This way we do not have to modify each producer to set a valid colorspace.
 309         mlt_properties properties = MLT_FRAME_PROPERTIES(frame);
 310         if ( mlt_properties_get_int( properties, "colorspace" ) <= 0 )
 311                 mlt_properties_set_int( properties, "colorspace", mlt_service_profile( MLT_FILTER_SERVICE(filter) )->colorspace );
 312
 313         frame->convert_image = convert_image;
 314
 315         mlt_filter cpu_csc = (mlt_filter) mlt_properties_get_data( MLT_FILTER_PROPERTIES( filter ), "cpu_csc", NULL );
 316         mlt_properties_inc_ref( MLT_FILTER_PROPERTIES(cpu_csc) );
 317         mlt_properties_set_data( properties, "cpu_csc", cpu_csc, 0,
 318                 (mlt_destructor) mlt_filter_close, NULL );
 319
 320         return frame;
 321 }
 322
 323 static mlt_filter create_filter( mlt_profile profile, char *effect )
 324 {
 325         mlt_filter filter = NULL;
 326         char *id = strdup( effect );
 327         char *arg = strchr( id, ':' );
 328         if ( arg != NULL )
 329                 *arg ++ = '\0';
 330
 331         // The swscale and avcolor_space filters require resolution as arg to test compatibility
 332         if ( !strcmp( effect, "avcolor_space" ) )
 333                 arg = (char*) profile->width;
 334
 335         filter = mlt_factory_filter( profile, id, arg );
 336         if ( filter )
 337                 mlt_properties_set_int( MLT_FILTER_PROPERTIES( filter ), "_loader", 1 );
 338         free( id );
 339         return filter;
 340 }
 341
 342 extern "C" {
 343
 344 mlt_filter filter_movit_convert_init( mlt_profile profile, mlt_service_type type, const char *id, char *arg )
 345 {
 346         mlt_filter filter = NULL;
 347         GlslManager* glsl = GlslManager::get_instance();
 348
 349         if ( glsl && ( filter = mlt_filter_new() ) )
 350         {
 351                 mlt_filter cpu_csc = create_filter( profile, "avcolor_space" );
 352                 if ( !cpu_csc )
 353                         cpu_csc = create_filter( profile, "imageconvert" );
 354                 if ( cpu_csc )
 355                         mlt_properties_set_data( MLT_FILTER_PROPERTIES( filter ), "cpu_csc", cpu_csc, 0,
 356                                 (mlt_destructor) mlt_filter_close, NULL );
 357                 filter->process = process;
 358         }
 359         return filter;
 360 }
 361
 362 }