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: disabled for now because we do not have reliable way to clear the texture property
 109                         // when a downstream filter has changed image.
 110                         if ( 0 && texture ) {
 111                                 *image = (uint8_t*) &texture->texture;
 112                                 mlt_frame_set_image( frame, *image, 0, NULL );
 113                                 mlt_properties_set_int( properties, "format", output_format );
 114                                 *format = output_format;
 115                                 GlslManager::get_instance()->unlock_service( frame );
 116                                 return error;
 117                         } else {
 118                                 // Use a separate chain to convert image in RAM to OpenGL texture.
 119                                 // Use cached chain if available and compatible.
 120                                 Mlt::Producer producer( mlt_producer_cut_parent( mlt_frame_get_original_producer( frame ) ) );
 121                                 chain = (EffectChain*) producer.get_data( "movit.convert.chain" );
 122                                 input = (MltInput*) producer.get_data( "movit.convert.input" );
 123                                 int w = producer.get_int( "movit.convert.width" );
 124                                 int h = producer.get_int( "movit.convert.height" );
 125                                 mlt_image_format f = (mlt_image_format) producer.get_int( "movit.convert.format" );
 126                                 if ( !chain || width != w || height != h || output_format != f ) {
 127                                         chain = new EffectChain( width, height );
 128                                         input = new MltInput( width, height );
 129                                         chain->add_input( input );
 130                                         chain->add_effect( new Mlt::VerticalFlip() );
 131                                         finalize_chain = true;
 132                                         producer.set( "movit.convert.chain", chain, 0, (mlt_destructor) delete_chain );
 133                                         producer.set( "movit.convert.width", width );
 134                                         producer.set( "movit.convert.height", height );
 135                                         producer.set( "movit.convert.width", output_format );
 136                                 }
 137                         }
 138                 }
 139                 if ( *format == mlt_image_rgb24a || *format == mlt_image_opengl ) {
 140                         input->useFlatInput( chain, FORMAT_RGBA_POSTMULTIPLIED_ALPHA, width, height );
 141                         input->set_pixel_data( *image );
 142                 }
 143                 else if ( *format == mlt_image_rgb24 ) {
 144                         input->useFlatInput( chain, FORMAT_RGB, width, height );
 145                         input->set_pixel_data( *image );
 146                 }
 147                 else if ( *format == mlt_image_yuv420p ) {
 148                         ImageFormat image_format;
 149                         YCbCrFormat ycbcr_format;
 150                         if ( 709 == mlt_properties_get_int( properties, "colorspace" ) ) {
 151                                 image_format.color_space = COLORSPACE_REC_709;
 152                                 image_format.gamma_curve = GAMMA_REC_709;
 153                                 ycbcr_format.luma_coefficients = YCBCR_REC_709;
 154                         } else if ( 576 == mlt_properties_get_int( properties, "height" ) ) {
 155                                 image_format.color_space = COLORSPACE_REC_601_625;
 156                                 image_format.gamma_curve = GAMMA_REC_601;
 157                                 ycbcr_format.luma_coefficients = YCBCR_REC_601;
 158                         } else {
 159                                 image_format.color_space = COLORSPACE_REC_601_525;
 160                                 image_format.gamma_curve = GAMMA_REC_601;
 161                                 ycbcr_format.luma_coefficients = YCBCR_REC_601;
 162                         }
 163                         ycbcr_format.full_range = mlt_properties_get_int( properties, "force_full_luma" );
 164                         ycbcr_format.chroma_subsampling_x = ycbcr_format.chroma_subsampling_y = 2;
 165                         // TODO: make new frame properties set by producers
 166                         ycbcr_format.cb_x_position = ycbcr_format.cr_x_position = 0.0f;
 167                         ycbcr_format.cb_y_position = ycbcr_format.cr_y_position = 0.5f;
 168                         input->useYCbCrInput( chain, image_format, ycbcr_format, width, height );
 169                         input->set_pixel_data( *image );
 170                 }
 171                 else if ( *format == mlt_image_yuv422 ) {
 172                         ImageFormat image_format;
 173                         YCbCrFormat ycbcr_format;
 174                         if ( 709 == mlt_properties_get_int( properties, "colorspace" ) ) {
 175                                 image_format.color_space = COLORSPACE_REC_709;
 176                                 image_format.gamma_curve = GAMMA_REC_709;
 177                                 ycbcr_format.luma_coefficients = YCBCR_REC_709;
 178                         } else if ( 576 == height ) {
 179                                 image_format.color_space = COLORSPACE_REC_601_625;
 180                                 image_format.gamma_curve = GAMMA_REC_601;
 181                                 ycbcr_format.luma_coefficients = YCBCR_REC_601;
 182                         } else {
 183                                 image_format.color_space = COLORSPACE_REC_601_525;
 184                                 image_format.gamma_curve = GAMMA_REC_601;
 185                                 ycbcr_format.luma_coefficients = YCBCR_REC_601;
 186                         }
 187                         ycbcr_format.full_range = mlt_properties_get_int( properties, "force_full_luma" );
 188                         ycbcr_format.chroma_subsampling_x = 2;
 189                         ycbcr_format.chroma_subsampling_y = 1;
 190                         // TODO: make new frame properties set by producers
 191                         ycbcr_format.cb_x_position = ycbcr_format.cr_x_position = 0.0f;
 192                         ycbcr_format.cb_y_position = ycbcr_format.cr_y_position = 0.5f;
 193                         input->useYCbCrInput( chain, image_format, ycbcr_format, width, height );
 194
 195                         // convert chunky to planar
 196                         uint8_t* planar = (uint8_t*) mlt_pool_alloc( img_size );
 197                         yuv422_to_yuv422p( *image, planar, width, height );
 198                         input->set_pixel_data( planar );
 199                         mlt_frame_set_image( frame, planar, img_size, mlt_pool_release );
 200                 }
 201                 // Finalize the separate conversion chain if needed.
 202                 if ( finalize_chain )
 203                         chain->finalize();
 204         }
 205
 206         if ( output_format != mlt_image_glsl ) {
 207                 glsl_fbo fbo = glsl->get_fbo( width, height );
 208
 209                 if ( output_format == mlt_image_glsl_texture ) {
 210                         glsl_texture texture = glsl->get_texture( width, height, GL_RGBA );
 211
 212                         glBindFramebuffer( GL_FRAMEBUFFER, fbo->fbo );
 213                         check_error();
 214                         glFramebufferTexture2D( GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture->texture, 0 );
 215                         check_error();
 216                         glBindFramebuffer( GL_FRAMEBUFFER, 0 );
 217                         check_error();
 218
 219                         GlslManager::render( service, chain, fbo->fbo, width, height );
 220
 221                         glFinish();
 222                         check_error();
 223                         glBindFramebuffer( GL_FRAMEBUFFER, 0 );
 224                         check_error();
 225
 226                         *image = (uint8_t*) &texture->texture;
 227                         mlt_frame_set_image( frame, *image, 0, NULL );
 228                         mlt_properties_set_data( properties, "movit.convert.texture", texture, 0,
 229                                 (mlt_destructor) GlslManager::release_texture, NULL );
 230                         mlt_properties_set_int( properties, "format", output_format );
 231                         *format = output_format;
 232                 }
 233                 else {
 234                         // Use a PBO to hold the data we read back with glReadPixels()
 235                         // (Intel/DRI goes into a slow path if we don't read to PBO)
 236                         GLenum gl_format = ( output_format == mlt_image_rgb24a || output_format == mlt_image_opengl )?
 237                                 GL_RGBA : GL_RGB;
 238                         img_size = width * height * ( gl_format == GL_RGB? 3 : 4 );
 239                         glsl_pbo pbo = glsl->get_pbo( img_size );
 240                         glsl_texture texture = glsl->get_texture( width, height, gl_format );
 241
 242                         if ( fbo && pbo && texture ) {
 243                                 // Set the FBO
 244                                 glBindFramebuffer( GL_FRAMEBUFFER, fbo->fbo );
 245                                 check_error();
 246                                 glFramebufferTexture2D( GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture->texture, 0 );
 247                                 check_error();
 248                                 glBindFramebuffer( GL_FRAMEBUFFER, 0 );
 249                                 check_error();
 250
 251                                 GlslManager::render( service, chain, fbo->fbo, width, height );
 252
 253                                 // Read FBO into PBO
 254                                 glBindBuffer( GL_PIXEL_PACK_BUFFER_ARB, pbo->pbo );
 255                                 check_error();
 256                                 glBufferData( GL_PIXEL_PACK_BUFFER_ARB, img_size, NULL, GL_STREAM_READ );
 257                                 check_error();
 258                                 glReadPixels( 0, 0, width, height, gl_format, GL_UNSIGNED_BYTE, BUFFER_OFFSET(0) );
 259                                 check_error();
 260
 261                                 // Copy from PBO
 262                                 uint8_t* buf = (uint8_t*) glMapBuffer( GL_PIXEL_PACK_BUFFER_ARB, GL_READ_ONLY );
 263                                 check_error();
 264                                 *image = (uint8_t*) mlt_pool_alloc( img_size );
 265                                 mlt_frame_set_image( frame, *image, img_size, mlt_pool_release );
 266                                 memcpy( *image, buf, img_size );
 267
 268                                 if ( output_format == mlt_image_yuv422 || output_format == mlt_image_yuv420p ) {
 269                                         *format = mlt_image_rgb24;
 270                                         error = convert_on_cpu( frame, image, format, output_format );
 271                                 }
 272
 273                                 // Release PBO and FBO
 274                                 glUnmapBuffer( GL_PIXEL_PACK_BUFFER_ARB );
 275                                 check_error();
 276                                 glBindBuffer( GL_PIXEL_PACK_BUFFER_ARB, 0 );
 277                                 check_error();
 278                                 glBindFramebuffer( GL_FRAMEBUFFER, 0 );
 279                                 check_error();
 280                                 glBindTexture( GL_TEXTURE_2D, 0 );
 281                                 check_error();
 282                                 mlt_properties_set_data( properties, "movit.convert.texture", texture, 0,
 283                                         (mlt_destructor) GlslManager::release_texture, NULL);
 284
 285                                 mlt_properties_set_int( properties, "format", output_format );
 286                                 *format = output_format;
 287                         }
 288                         else {
 289                                 error = 1;
 290                         }
 291                 }
 292                 if ( fbo ) GlslManager::release_fbo( fbo );
 293         }
 294         else {
 295                 mlt_properties_set_int( properties, "format", output_format );
 296                 *format = output_format;
 297         }
 298         GlslManager::get_instance()->unlock_service( frame );
 299
 300         return error;
 301 }
 302
 303 static mlt_frame process( mlt_filter filter, mlt_frame frame )
 304 {
 305         // Set a default colorspace on the frame if not yet set by the producer.
 306         // The producer may still change it during get_image.
 307         // This way we do not have to modify each producer to set a valid colorspace.
 308         mlt_properties properties = MLT_FRAME_PROPERTIES(frame);
 309         if ( mlt_properties_get_int( properties, "colorspace" ) <= 0 )
 310                 mlt_properties_set_int( properties, "colorspace", mlt_service_profile( MLT_FILTER_SERVICE(filter) )->colorspace );
 311
 312         frame->convert_image = convert_image;
 313
 314         mlt_filter cpu_csc = (mlt_filter) mlt_properties_get_data( MLT_FILTER_PROPERTIES( filter ), "cpu_csc", NULL );
 315         mlt_properties_inc_ref( MLT_FILTER_PROPERTIES(cpu_csc) );
 316         mlt_properties_set_data( properties, "cpu_csc", cpu_csc, 0,
 317                 (mlt_destructor) mlt_filter_close, NULL );
 318
 319         return frame;
 320 }
 321
 322 static mlt_filter create_filter( mlt_profile profile, char *effect )
 323 {
 324         mlt_filter filter = NULL;
 325         char *id = strdup( effect );
 326         char *arg = strchr( id, ':' );
 327         if ( arg != NULL )
 328                 *arg ++ = '\0';
 329
 330         // The swscale and avcolor_space filters require resolution as arg to test compatibility
 331         if ( !strcmp( effect, "avcolor_space" ) )
 332                 arg = (char*) profile->width;
 333
 334         filter = mlt_factory_filter( profile, id, arg );
 335         if ( filter )
 336                 mlt_properties_set_int( MLT_FILTER_PROPERTIES( filter ), "_loader", 1 );
 337         free( id );
 338         return filter;
 339 }
 340
 341 extern "C" {
 342
 343 mlt_filter filter_movit_convert_init( mlt_profile profile, mlt_service_type type, const char *id, char *arg )
 344 {
 345         mlt_filter filter = NULL;
 346         GlslManager* glsl = GlslManager::get_instance();
 347
 348         if ( glsl && ( filter = mlt_filter_new() ) )
 349         {
 350                 mlt_filter cpu_csc = create_filter( profile, "avcolor_space" );
 351                 if ( !cpu_csc )
 352                         cpu_csc = create_filter( profile, "imageconvert" );
 353                 if ( cpu_csc )
 354                         mlt_properties_set_data( MLT_FILTER_PROPERTIES( filter ), "cpu_csc", cpu_csc, 0,
 355                                 (mlt_destructor) mlt_filter_close, NULL );
 356                 filter->process = process;
 357         }
 358         return filter;
 359 }
 360
 361 }