2 * filter_glsl_manager.cpp
3 * Copyright (C) 2011-2012 Christophe Thommeret <hftom@free.fr>
4 * Copyright (C) 2013 Dan Dennedy <dan@dennedy.org>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software Foundation,
18 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
23 #include "filter_glsl_manager.h"
24 #include <movit/init.h>
25 #include <movit/util.h>
26 #include <movit/effect_chain.h>
27 #include "mlt_movit_input.h"
28 #include "mlt_flip_effect.h"
29 #include <mlt++/MltEvent.h>
30 #include <mlt++/MltProducer.h>
33 #include <framework/mlt_factory.h>
36 #if defined(__DARWIN__)
37 #include <OpenGL/OpenGL.h>
44 void deleteManager(GlslManager *p)
49 GlslManager::GlslManager()
50 : Mlt::Filter( mlt_filter_new() )
56 mlt_filter filter = get_filter();
58 // Set the mlt_filter child in case we choose to override virtual functions.
60 mlt_properties_set_data(mlt_global_properties(), "glslManager", this, 0,
61 (mlt_destructor) deleteManager, NULL);
63 mlt_events_register( get_properties(), "init glsl", NULL );
64 mlt_events_register( get_properties(), "close glsl", NULL );
65 initEvent = listen("init glsl", this, (mlt_listener) GlslManager::onInit);
66 closeEvent = listen("close glsl", this, (mlt_listener) GlslManager::onClose);
70 GlslManager::~GlslManager()
72 mlt_log_debug(get_service(), "%s\n", __FUNCTION__);
74 // XXX If there is still a frame holding a reference to a texture after this
75 // destructor is called, then it will crash in release_texture().
76 // while (texture_list.peek_back())
77 // delete (glsl_texture) texture_list.pop_back();
80 if (prev_sync != NULL) {
81 glDeleteSync( prev_sync );
85 GlslManager* GlslManager::get_instance()
87 return (GlslManager*) mlt_properties_get_data(mlt_global_properties(), "glslManager", 0);
90 glsl_fbo GlslManager::get_fbo(int width, int height)
92 #if defined(__DARWIN__)
93 CGLContextObj context = CGLGetCurrentContext();
95 HGLRC context = wglGetCurrentContext();
97 GLXContext context = glXGetCurrentContext();
101 for (int i = 0; i < fbo_list.count(); ++i) {
102 glsl_fbo fbo = (glsl_fbo) fbo_list.peek(i);
103 if (!fbo->used && (fbo->width == width) && (fbo->height == height) && (fbo->context == context)) {
112 glGenFramebuffers(1, &fb);
116 glsl_fbo fbo = new glsl_fbo_s;
118 glDeleteFramebuffers(1, &fb);
123 fbo->height = height;
125 fbo->context = context;
127 fbo_list.push_back(fbo);
132 void GlslManager::release_fbo(glsl_fbo fbo)
137 glsl_texture GlslManager::get_texture(int width, int height, GLint internal_format)
140 for (int i = 0; i < texture_list.count(); ++i) {
141 glsl_texture tex = (glsl_texture) texture_list.peek(i);
142 if (!tex->used && (tex->width == width) && (tex->height == height) && (tex->internal_format == internal_format)) {
143 glBindTexture(GL_TEXTURE_2D, tex->texture);
144 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
145 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
146 glBindTexture( GL_TEXTURE_2D, 0);
153 // Recycle a glsl_texture with deleted glTexture.
154 glsl_texture gtex = 0;
155 for (int i = 0; i < texture_list.count(); ++i) {
156 glsl_texture tex = (glsl_texture) texture_list.peek(i);
157 if (!tex->used && !tex->width && !tex->height) {
165 glGenTextures(1, &tex);
167 glDeleteTextures(1, &tex);
172 gtex = new glsl_texture_s;
177 glBindTexture( GL_TEXTURE_2D, tex );
178 glTexImage2D( GL_TEXTURE_2D, 0, internal_format, width, height, 0, internal_format, GL_UNSIGNED_BYTE, NULL );
179 glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE );
180 glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE );
181 glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST );
182 glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST );
183 glBindTexture( GL_TEXTURE_2D, 0 );
187 gtex->height = height;
188 gtex->internal_format = internal_format;
191 texture_list.push_back(gtex);
196 void GlslManager::release_texture(glsl_texture texture)
201 glsl_pbo GlslManager::get_pbo(int size)
206 glGenBuffers(1, &pb);
212 pbo = new glsl_pbo_s;
214 glDeleteBuffers(1, &pb);
221 if (size > pbo->size) {
222 glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, pbo->pbo);
223 glBufferData(GL_PIXEL_UNPACK_BUFFER_ARB, size, NULL, GL_STREAM_DRAW);
224 glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, 0);
231 void GlslManager::cleanupContext()
234 while (fbo_list.peek_back()) {
235 glsl_fbo fbo = (glsl_fbo) fbo_list.pop_back();
236 glDeleteFramebuffers(1, &fbo->fbo);
239 for (int i = 0; i < texture_list.count(); ++i) {
240 glsl_texture texture = (glsl_texture) texture_list.peek(i);
241 glDeleteTextures(1, &texture->texture);
247 glDeleteBuffers(1, &pbo->pbo);
254 void GlslManager::onInit( mlt_properties owner, GlslManager* filter )
256 mlt_log_debug( filter->get_service(), "%s\n", __FUNCTION__ );
258 std::string path = std::string(mlt_environment("MLT_APPDIR")).append("\\share\\movit");
259 #elif defined(__DARWIN__) && defined(RELOCATABLE)
260 std::string path = std::string(mlt_environment("MLT_APPDIR")).append("/share/movit");
262 std::string path = std::string(getenv("MLT_MOVIT_PATH") ? getenv("MLT_MOVIT_PATH") : SHADERDIR);
264 ::init_movit( path, mlt_log_get_level() == MLT_LOG_DEBUG? MOVIT_DEBUG_ON : MOVIT_DEBUG_OFF );
265 filter->set( "glsl_supported", movit_initialized );
268 void GlslManager::onClose( mlt_properties owner, GlslManager *filter )
270 filter->cleanupContext();
273 void GlslManager::onServiceChanged( mlt_properties owner, mlt_service aservice )
275 Mlt::Service service( aservice );
277 service.set( "movit chain", NULL, 0 );
278 service.set( "movit input", NULL, 0 );
279 // Destroy the effect list.
280 GlslManager::get_instance()->set( service.get( "_unique_id" ), NULL, 0 );
284 void GlslManager::onPropertyChanged( mlt_properties owner, mlt_service service, const char* property )
286 if ( property && std::string( property ) == "disable" )
287 onServiceChanged( owner, service );
292 mlt_filter filter_glsl_manager_init( mlt_profile profile, mlt_service_type type, const char *id, char *arg )
294 GlslManager* g = GlslManager::get_instance();
298 g = new GlslManager();
299 return g->get_filter();
304 Mlt::Properties GlslManager::effect_list( Mlt::Service& service )
306 char *unique_id = service.get( "_unique_id" );
307 mlt_properties properties = (mlt_properties) get_data( unique_id );
309 properties = mlt_properties_new();
310 set( unique_id, properties, 0, (mlt_destructor) mlt_properties_close );
312 Mlt::Properties p( properties );
316 static void deleteChain( EffectChain* chain )
321 bool GlslManager::init_chain( mlt_service aservice )
324 Mlt::Service service( aservice );
325 EffectChain* chain = (EffectChain*) service.get_data( "movit chain" );
327 mlt_profile profile = mlt_service_profile( aservice );
328 Input* input = new MltInput( profile->width, profile->height );
329 chain = new EffectChain( profile->display_aspect_num, profile->display_aspect_den );
330 chain->add_input( input );
331 service.set( "movit chain", chain, 0, (mlt_destructor) deleteChain );
332 service.set( "movit input", input, 0 );
333 service.set( "_movit finalized", 0 );
334 service.listen( "service-changed", aservice, (mlt_listener) GlslManager::onServiceChanged );
335 service.listen( "property-changed", aservice, (mlt_listener) GlslManager::onPropertyChanged );
341 EffectChain* GlslManager::get_chain( mlt_service service )
343 return (EffectChain*) mlt_properties_get_data( MLT_SERVICE_PROPERTIES(service), "movit chain", NULL );
346 MltInput *GlslManager::get_input( mlt_service service )
348 return (MltInput*) mlt_properties_get_data( MLT_SERVICE_PROPERTIES(service), "movit input", NULL );
351 void GlslManager::reset_finalized( mlt_service service )
353 mlt_properties_set_int( MLT_SERVICE_PROPERTIES(service), "_movit finalized", 0 );
356 Effect* GlslManager::get_effect( mlt_service service, mlt_frame frame )
358 Mlt::Producer producer( mlt_producer_cut_parent( mlt_frame_get_original_producer( frame ) ) );
359 char *unique_id = mlt_properties_get( MLT_SERVICE_PROPERTIES(service), "_unique_id" );
360 return (Effect*) GlslManager::get_instance()->effect_list( producer ).get_data( unique_id );
363 Effect* GlslManager::add_effect( mlt_service service, mlt_frame frame, Effect* effect )
365 Mlt::Producer producer( mlt_producer_cut_parent( mlt_frame_get_original_producer( frame ) ) );
366 EffectChain* chain = (EffectChain*) producer.get_data( "movit chain" );
367 chain->add_effect( effect );
368 char *unique_id = mlt_properties_get( MLT_SERVICE_PROPERTIES(service), "_unique_id" );
369 GlslManager::get_instance()->effect_list( producer ).set( unique_id, effect, 0 );
373 Effect* GlslManager::add_effect( mlt_service service, mlt_frame frame, Effect* effect, Effect* input_b )
375 Mlt::Producer producer( mlt_producer_cut_parent( mlt_frame_get_original_producer( frame ) ) );
376 EffectChain* chain = (EffectChain*) producer.get_data( "movit chain" );
377 chain->add_effect( effect, chain->last_added_effect(),
378 input_b? input_b : chain->last_added_effect() );
379 char *unique_id = mlt_properties_get( MLT_SERVICE_PROPERTIES(service), "_unique_id" );
380 GlslManager::get_instance()->effect_list( producer ).set( unique_id, effect, 0 );
384 void GlslManager::render_fbo( mlt_service service, void* chain, GLuint fbo, int width, int height )
386 EffectChain* effect_chain = (EffectChain*) chain;
387 mlt_properties properties = MLT_SERVICE_PROPERTIES( service );
388 if ( !mlt_properties_get_int( properties, "_movit finalized" ) ) {
389 mlt_properties_set_int( properties, "_movit finalized", 1 );
390 effect_chain->add_effect( new Mlt::VerticalFlip() );
391 effect_chain->finalize();
393 effect_chain->render_to_fbo( fbo, width, height );
396 int GlslManager::render_frame_texture(mlt_service service, mlt_frame frame, int width, int height, uint8_t **image)
398 EffectChain* chain = get_chain( service );
399 if (!chain) return 1;
400 glsl_fbo fbo = get_fbo( width, height );
402 glsl_texture texture = get_texture( width, height, GL_RGBA );
408 glBindFramebuffer( GL_FRAMEBUFFER, fbo->fbo );
410 glFramebufferTexture2D( GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture->texture, 0 );
412 glBindFramebuffer( GL_FRAMEBUFFER, 0 );
415 // Make sure we never have more than one frame pending at any time.
416 // This ensures we do not swamp the GPU with so much work
417 // that we cannot actually display the frames we generate.
418 if (prev_sync != NULL) {
420 glClientWaitSync( prev_sync, 0, GL_TIMEOUT_IGNORED );
421 glDeleteSync( prev_sync );
423 render_fbo( service, chain, fbo->fbo, width, height );
424 prev_sync = glFenceSync( GL_SYNC_GPU_COMMANDS_COMPLETE, 0 );
425 GLsync sync = glFenceSync( GL_SYNC_GPU_COMMANDS_COMPLETE, 0 );
428 glBindFramebuffer( GL_FRAMEBUFFER, 0 );
432 *image = (uint8_t*) &texture->texture;
433 mlt_frame_set_image( frame, *image, 0, NULL );
434 mlt_properties_set_data( MLT_FRAME_PROPERTIES(frame), "movit.convert.texture", texture, 0,
435 (mlt_destructor) GlslManager::release_texture, NULL );
436 mlt_properties_set_data( MLT_FRAME_PROPERTIES(frame), "movit.convert.fence", sync, 0, NULL, NULL );
441 int GlslManager::render_frame_rgba(mlt_service service, mlt_frame frame, int width, int height, uint8_t **image)
443 EffectChain* chain = get_chain( service );
444 if (!chain) return 1;
445 glsl_fbo fbo = get_fbo( width, height );
447 glsl_texture texture = get_texture( width, height, GL_RGBA );
453 // Use a PBO to hold the data we read back with glReadPixels().
454 // (Intel/DRI goes into a slow path if we don't read to PBO.)
455 int img_size = width * height * 4;
456 glsl_pbo pbo = get_pbo( img_size );
459 release_texture(texture);
465 glBindFramebuffer( GL_FRAMEBUFFER, fbo->fbo );
467 glFramebufferTexture2D( GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture->texture, 0 );
469 glBindFramebuffer( GL_FRAMEBUFFER, 0 );
472 render_fbo( service, chain, fbo->fbo, width, height );
475 glBindFramebuffer( GL_FRAMEBUFFER, fbo->fbo );
477 glBindBuffer( GL_PIXEL_PACK_BUFFER_ARB, pbo->pbo );
479 glBufferData( GL_PIXEL_PACK_BUFFER_ARB, img_size, NULL, GL_STREAM_READ );
481 glReadPixels( 0, 0, width, height, GL_BGRA, GL_UNSIGNED_BYTE, BUFFER_OFFSET(0) );
485 uint8_t* buf = (uint8_t*) glMapBuffer( GL_PIXEL_PACK_BUFFER_ARB, GL_READ_ONLY );
487 *image = (uint8_t*) mlt_pool_alloc( img_size );
488 mlt_frame_set_image( frame, *image, img_size, mlt_pool_release );
489 memcpy( *image, buf, img_size );
491 // Convert BGRA to RGBA
492 register uint8_t *p = *image;
493 register int n = width * height + 1;
500 // Release PBO and FBO
501 glUnmapBuffer( GL_PIXEL_PACK_BUFFER_ARB );
503 glBindBuffer( GL_PIXEL_PACK_BUFFER_ARB, 0 );
505 glBindFramebuffer( GL_FRAMEBUFFER, 0 );
507 glBindTexture( GL_TEXTURE_2D, 0 );
509 mlt_properties_set_data( MLT_FRAME_PROPERTIES(frame), "movit.convert.texture", texture, 0,
510 (mlt_destructor) GlslManager::release_texture, NULL);
516 void GlslManager::lock_service( mlt_frame frame )
518 Mlt::Producer producer( mlt_producer_cut_parent( mlt_frame_get_original_producer( frame ) ) );
522 void GlslManager::unlock_service( mlt_frame frame )
524 Mlt::Producer producer( mlt_producer_cut_parent( mlt_frame_get_original_producer( frame ) ) );