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
  30
  31 static void yuv422_to_yuv422p( uint8_t *yuv422, uint8_t *yuv422p, int width, int height )
  32 {
  33         uint8_t *Y = yuv422p;
  34         uint8_t *U = Y + width * height;
  35         uint8_t *V = U + width * height / 2;
  36         int n = width * height / 2 + 1;
  37         while ( --n ) {
  38                 *Y++ = *yuv422++;
  39                 *U++ = *yuv422++;
  40                 *Y++ = *yuv422++;
  41                 *V++ = *yuv422++;
  42         }
  43 }
  44
  45 static int convert_on_cpu( mlt_frame frame, uint8_t **image, mlt_image_format *format, mlt_image_format output_format )
  46 {
  47         int error = 0;
  48         mlt_filter cpu_csc = (mlt_filter) mlt_properties_get_data( MLT_FRAME_PROPERTIES( frame ), "cpu_csc", NULL );
  49         if ( cpu_csc ) {
  50                 int (* save_fp )( mlt_frame self, uint8_t **image, mlt_image_format *input, mlt_image_format output )
  51                         = frame->convert_image;
  52                 frame->convert_image = NULL;
  53                 mlt_filter_process( cpu_csc, frame );
  54                 error = frame->convert_image( frame, image, format, output_format );
  55                 frame->convert_image = save_fp;
  56         } else {
  57                 error = 1;
  58         }
  59         return error;
  60 }
  61
  62 static int convert_image( mlt_frame frame, uint8_t **image, mlt_image_format *format, mlt_image_format output_format )
  63 {
  64         // Nothing to do!
  65         if ( *format == output_format )
  66                 return 0;
  67
  68         mlt_properties properties = MLT_FRAME_PROPERTIES( frame );
  69
  70         mlt_log_debug( NULL, "filter_movit_convert: %s -> %s\n",
  71                 mlt_image_format_name( *format ), mlt_image_format_name( output_format ) );
  72
  73         // Use CPU if glsl not initialized or not supported.
  74         GlslManager* glsl = GlslManager::get_instance();
  75         if ( !glsl || !glsl->get_int("glsl_supported" ) )
  76                 return convert_on_cpu( frame, image, format, output_format );
  77
  78         // Do non-GL image conversions on a CPU-based image converter.
  79         if ( *format != mlt_image_glsl && output_format != mlt_image_glsl && output_format != mlt_image_glsl_texture )
  80                 return convert_on_cpu( frame, image, format, output_format );
  81
  82         int error = 0;
  83         int width = mlt_properties_get_int( properties, "width" );
  84         int height = mlt_properties_get_int( properties, "height" );
  85         int img_size = mlt_image_format_size( *format, width, height, NULL );
  86         mlt_producer producer = mlt_producer_cut_parent( mlt_frame_get_original_producer( frame ) );
  87         mlt_service service = MLT_PRODUCER_SERVICE(producer);
  88         EffectChain* chain = GlslManager::get_chain( service );
  89         MltInput* input = GlslManager::get_input( service );
  90
  91         // Use a temporary chain to convert image in RAM to OpenGL texture.
  92         if ( output_format == mlt_image_glsl_texture && *format != mlt_image_glsl ) {
  93                 input = new MltInput( width, height );
  94                 chain = new EffectChain( width, height );
  95                 chain->add_input( input );
  96         }
  97
  98         if ( *format != mlt_image_glsl ) {
  99                 if ( *format == mlt_image_rgb24a || *format == mlt_image_opengl ) {
 100                         input->useFlatInput( chain, FORMAT_RGBA_POSTMULTIPLIED_ALPHA, width, height );
 101                         input->set_pixel_data( *image );
 102                 }
 103                 else if ( *format == mlt_image_rgb24 ) {
 104                         input->useFlatInput( chain, FORMAT_RGB, width, height );
 105                         input->set_pixel_data( *image );
 106                 }
 107                 else if ( *format == mlt_image_yuv420p ) {
 108                         ImageFormat image_format;
 109                         YCbCrFormat ycbcr_format;
 110                         if ( 709 == mlt_properties_get_int( properties, "colorspace" ) ) {
 111                                 image_format.color_space = COLORSPACE_REC_709;
 112                                 image_format.gamma_curve = GAMMA_REC_709;
 113                                 ycbcr_format.luma_coefficients = YCBCR_REC_709;
 114                         } else if ( 576 == mlt_properties_get_int( properties, "height" ) ) {
 115                                 image_format.color_space = COLORSPACE_REC_601_625;
 116                                 image_format.gamma_curve = GAMMA_REC_601;
 117                                 ycbcr_format.luma_coefficients = YCBCR_REC_601;
 118                         } else {
 119                                 image_format.color_space = COLORSPACE_REC_601_525;
 120                                 image_format.gamma_curve = GAMMA_REC_601;
 121                                 ycbcr_format.luma_coefficients = YCBCR_REC_601;
 122                         }
 123                         ycbcr_format.full_range = mlt_properties_get_int( properties, "force_full_luma" );
 124                         ycbcr_format.chroma_subsampling_x = ycbcr_format.chroma_subsampling_y = 2;
 125                         // TODO: make new frame properties set by producers
 126                         ycbcr_format.cb_x_position = ycbcr_format.cr_x_position = 0.0f;
 127                         ycbcr_format.cb_y_position = ycbcr_format.cr_y_position = 0.5f;
 128                         input->useYCbCrInput( chain, image_format, ycbcr_format, width, height );
 129                         input->set_pixel_data( *image );
 130                 }
 131                 else if ( *format == mlt_image_yuv422 ) {
 132                         ImageFormat image_format;
 133                         YCbCrFormat ycbcr_format;
 134                         if ( 709 == mlt_properties_get_int( properties, "colorspace" ) ) {
 135                                 image_format.color_space = COLORSPACE_REC_709;
 136                                 image_format.gamma_curve = GAMMA_REC_709;
 137                                 ycbcr_format.luma_coefficients = YCBCR_REC_709;
 138                         } else if ( 576 == height ) {
 139                                 image_format.color_space = COLORSPACE_REC_601_625;
 140                                 image_format.gamma_curve = GAMMA_REC_601;
 141                                 ycbcr_format.luma_coefficients = YCBCR_REC_601;
 142                         } else {
 143                                 image_format.color_space = COLORSPACE_REC_601_525;
 144                                 image_format.gamma_curve = GAMMA_REC_601;
 145                                 ycbcr_format.luma_coefficients = YCBCR_REC_601;
 146                         }
 147                         ycbcr_format.full_range = mlt_properties_get_int( properties, "force_full_luma" );
 148                         ycbcr_format.chroma_subsampling_x = 2;
 149                         ycbcr_format.chroma_subsampling_y = 1;
 150                         // TODO: make new frame properties set by producers
 151                         ycbcr_format.cb_x_position = ycbcr_format.cr_x_position = 0.0f;
 152                         ycbcr_format.cb_y_position = ycbcr_format.cr_y_position = 0.5f;
 153                         input->useYCbCrInput( chain, image_format, ycbcr_format, width, height );
 154
 155                         // convert chunky to planar
 156                         uint8_t* planar = (uint8_t*) mlt_pool_alloc( img_size );
 157                         yuv422_to_yuv422p( *image, planar, width, height );
 158                         input->set_pixel_data( planar );
 159                         mlt_frame_set_image( frame, planar, img_size, mlt_pool_release );
 160                 }
 161         }
 162
 163         if ( output_format != mlt_image_glsl ) {
 164                 glsl_fbo fbo = glsl->get_fbo( width, height );
 165
 166                 if ( output_format == mlt_image_glsl_texture ) {
 167                         glsl_texture texture = glsl->get_texture( width, height, GL_RGBA );
 168
 169                         glBindFramebuffer( GL_FRAMEBUFFER, fbo->fbo );
 170                         check_error();
 171                         glFramebufferTexture2D( GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture->texture, 0 );
 172                         check_error();
 173                         glBindFramebuffer( GL_FRAMEBUFFER, 0 );
 174                         check_error();
 175
 176                         // Using a temporary chain to convert image in RAM to OpenGL texture.
 177                         if ( *format != mlt_image_glsl )
 178                                 GlslManager::reset_finalized( service );
 179                         GlslManager::render( service, chain, fbo->fbo, width, height );
 180
 181                         glFinish();
 182                         check_error();
 183                         glBindFramebuffer( GL_FRAMEBUFFER, 0 );
 184                         check_error();
 185                         // Using a temporary chain to convert image in RAM to OpenGL texture.
 186                         if ( *format != mlt_image_glsl )
 187                                 delete chain;
 188
 189                         *image = (uint8_t*) &texture->texture;
 190                         mlt_frame_set_image( frame, *image, 0, NULL );
 191                         mlt_properties_set_data( properties, "movit.convert", texture, 0,
 192                                 (mlt_destructor) GlslManager::release_texture, NULL );
 193                         mlt_properties_set_int( properties, "format", output_format );
 194                         *format = output_format;
 195                 }
 196                 else {
 197                         // Use a PBO to hold the data we read back with glReadPixels()
 198                         // (Intel/DRI goes into a slow path if we don't read to PBO)
 199                         GLenum gl_format = ( output_format == mlt_image_rgb24a || output_format == mlt_image_opengl )?
 200                                 GL_RGBA : GL_RGB;
 201                         img_size = width * height * ( gl_format == GL_RGB? 3 : 4 );
 202                         glsl_pbo pbo = glsl->get_pbo( img_size );
 203                         glsl_texture texture = glsl->get_texture( width, height, gl_format );
 204
 205                         if ( fbo && pbo && texture ) {
 206                                 // Set the FBO
 207                                 glBindFramebuffer( GL_FRAMEBUFFER, fbo->fbo );
 208                                 check_error();
 209                                 glFramebufferTexture2D( GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture->texture, 0 );
 210                                 check_error();
 211                                 glBindFramebuffer( GL_FRAMEBUFFER, 0 );
 212                                 check_error();
 213
 214                                 GlslManager::render( service, chain, fbo->fbo, width, height );
 215
 216                                 // Read FBO into PBO
 217                                 glBindBuffer( GL_PIXEL_PACK_BUFFER_ARB, pbo->pbo );
 218                                 check_error();
 219                                 glBufferData( GL_PIXEL_PACK_BUFFER_ARB, img_size, NULL, GL_STREAM_READ );
 220                                 check_error();
 221                                 glReadPixels( 0, 0, width, height, gl_format, GL_UNSIGNED_BYTE, BUFFER_OFFSET(0) );
 222                                 check_error();
 223
 224                                 // Copy from PBO
 225                                 uint8_t* buf = (uint8_t*) glMapBuffer( GL_PIXEL_PACK_BUFFER_ARB, GL_READ_ONLY );
 226                                 check_error();
 227
 228                                 if ( output_format == mlt_image_yuv422 || output_format == mlt_image_yuv420p ) {
 229                                         *image = buf;
 230                                         *format = mlt_image_rgb24;
 231                                         error = convert_on_cpu( frame, image, format, output_format );
 232                                 }
 233                                 else {
 234                                         *image = (uint8_t*) mlt_pool_alloc( img_size );
 235                                         mlt_frame_set_image( frame, *image, img_size, mlt_pool_release );
 236                                         memcpy( *image, buf, img_size );
 237                                 }
 238
 239                                 // Release PBO and FBO
 240                                 glUnmapBuffer( GL_PIXEL_PACK_BUFFER_ARB );
 241                                 check_error();
 242                                 glBindBuffer( GL_PIXEL_PACK_BUFFER_ARB, 0 );
 243                                 check_error();
 244                                 glBindFramebuffer( GL_FRAMEBUFFER, 0 );
 245                                 check_error();
 246                                 glBindTexture( GL_TEXTURE_2D, 0 );
 247                                 check_error();
 248                                 GlslManager::release_texture( texture );
 249
 250                                 mlt_properties_set_int( properties, "format", output_format );
 251                                 *format = output_format;
 252                         }
 253                         else {
 254                                 error = 1;
 255                         }
 256                 }
 257                 if ( fbo ) GlslManager::release_fbo( fbo );
 258         }
 259         else {
 260                 mlt_properties_set_int( properties, "format", output_format );
 261                 *format = output_format;
 262         }
 263
 264         return error;
 265 }
 266
 267 static mlt_frame process( mlt_filter filter, mlt_frame frame )
 268 {
 269         // Set a default colorspace on the frame if not yet set by the producer.
 270         // The producer may still change it during get_image.
 271         // This way we do not have to modify each producer to set a valid colorspace.
 272         mlt_properties properties = MLT_FRAME_PROPERTIES(frame);
 273         if ( mlt_properties_get_int( properties, "colorspace" ) <= 0 )
 274                 mlt_properties_set_int( properties, "colorspace", mlt_service_profile( MLT_FILTER_SERVICE(filter) )->colorspace );
 275
 276         frame->convert_image = convert_image;
 277
 278         mlt_filter cpu_csc = (mlt_filter) mlt_properties_get_data( MLT_FILTER_PROPERTIES( filter ), "cpu_csc", NULL );
 279         mlt_properties_inc_ref( MLT_FILTER_PROPERTIES(cpu_csc) );
 280         mlt_properties_set_data( properties, "cpu_csc", cpu_csc, 0,
 281                 (mlt_destructor) mlt_filter_close, NULL );
 282
 283         return frame;
 284 }
 285
 286 static mlt_filter create_filter( mlt_profile profile, char *effect )
 287 {
 288         mlt_filter filter = NULL;
 289         char *id = strdup( effect );
 290         char *arg = strchr( id, ':' );
 291         if ( arg != NULL )
 292                 *arg ++ = '\0';
 293
 294         // The swscale and avcolor_space filters require resolution as arg to test compatibility
 295         if ( !strcmp( effect, "avcolor_space" ) )
 296                 arg = (char*) profile->width;
 297
 298         filter = mlt_factory_filter( profile, id, arg );
 299         if ( filter )
 300                 mlt_properties_set_int( MLT_FILTER_PROPERTIES( filter ), "_loader", 1 );
 301         free( id );
 302         return filter;
 303 }
 304
 305 extern "C" {
 306
 307 mlt_filter filter_movit_convert_init( mlt_profile profile, mlt_service_type type, const char *id, char *arg )
 308 {
 309         mlt_filter filter = NULL;
 310         GlslManager* glsl = GlslManager::get_instance();
 311
 312         if ( glsl && ( filter = mlt_filter_new() ) )
 313         {
 314                 mlt_filter cpu_csc = create_filter( profile, "avcolor_space" );
 315                 if ( !cpu_csc )
 316                         cpu_csc = create_filter( profile, "imageconvert" );
 317                 if ( cpu_csc )
 318                         mlt_properties_set_data( MLT_FILTER_PROPERTIES( filter ), "cpu_csc", cpu_csc, 0,
 319                                 (mlt_destructor) mlt_filter_close, NULL );
 320                 filter->process = process;
 321         }
 322         return filter;
 323 }
 324
 325 }