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 <movit/resource_pool.h>
28 #include "mlt_movit_input.h"
29 #include "mlt_flip_effect.h"
30 #include <mlt++/MltEvent.h>
31 #include <mlt++/MltProducer.h>
34 #include <framework/mlt_factory.h>
37 #if defined(__DARWIN__)
38 #include <OpenGL/OpenGL.h>
45 using namespace movit;
47 void dec_ref_and_delete(GlslManager *p)
49 if (p->dec_ref() == 0) {
54 GlslManager::GlslManager()
55 : Mlt::Filter( mlt_filter_new() )
56 , resource_pool(new ResourcePool())
62 mlt_filter filter = get_filter();
64 // Set the mlt_filter child in case we choose to override virtual functions.
66 add_ref(mlt_global_properties());
68 mlt_events_register( get_properties(), "init glsl", NULL );
69 mlt_events_register( get_properties(), "close glsl", NULL );
70 initEvent = listen("init glsl", this, (mlt_listener) GlslManager::onInit);
71 closeEvent = listen("close glsl", this, (mlt_listener) GlslManager::onClose);
75 GlslManager::~GlslManager()
77 mlt_log_debug(get_service(), "%s\n", __FUNCTION__);
79 // XXX If there is still a frame holding a reference to a texture after this
80 // destructor is called, then it will crash in release_texture().
81 // while (texture_list.peek_back())
82 // delete (glsl_texture) texture_list.pop_back();
85 if (prev_sync != NULL) {
86 glDeleteSync( prev_sync );
88 while (syncs_to_delete.count() > 0) {
89 GLsync sync = (GLsync) syncs_to_delete.pop_front();
95 void GlslManager::add_ref(mlt_properties properties)
98 mlt_properties_set_data(properties, "glslManager", this, 0,
99 (mlt_destructor) dec_ref_and_delete, NULL);
102 GlslManager* GlslManager::get_instance()
104 return (GlslManager*) mlt_properties_get_data(mlt_global_properties(), "glslManager", 0);
107 glsl_texture GlslManager::get_texture(int width, int height, GLint internal_format)
110 for (int i = 0; i < texture_list.count(); ++i) {
111 glsl_texture tex = (glsl_texture) texture_list.peek(i);
112 if (!tex->used && (tex->width == width) && (tex->height == height) && (tex->internal_format == internal_format)) {
113 glBindTexture(GL_TEXTURE_2D, tex->texture);
114 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
115 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
116 glBindTexture( GL_TEXTURE_2D, 0);
125 glGenTextures(1, &tex);
130 glsl_texture gtex = new glsl_texture_s;
132 glDeleteTextures(1, &tex);
136 printf("created a new texture for %dx%d: %d\n", width, height, tex);
137 glBindTexture( GL_TEXTURE_2D, tex );
138 glTexImage2D( GL_TEXTURE_2D, 0, internal_format, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL );
139 glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE );
140 glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE );
141 glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST );
142 glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST );
143 glBindTexture( GL_TEXTURE_2D, 0 );
147 gtex->height = height;
148 gtex->internal_format = internal_format;
151 texture_list.push_back(gtex);
156 void GlslManager::release_texture(glsl_texture texture)
161 void GlslManager::delete_sync(GLsync sync)
163 // We do not know which thread we are called from, and we can only
164 // delete this if we are in one with a valid OpenGL context.
165 // Thus, store it for later deletion in render_frame_texture().
166 GlslManager* g = GlslManager::get_instance();
168 g->syncs_to_delete.push_back(sync);
172 glsl_pbo GlslManager::get_pbo(int size)
177 glGenBuffers(1, &pb);
183 pbo = new glsl_pbo_s;
185 glDeleteBuffers(1, &pb);
192 if (size > pbo->size) {
193 glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, pbo->pbo);
194 glBufferData(GL_PIXEL_UNPACK_BUFFER_ARB, size, NULL, GL_STREAM_DRAW);
195 glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, 0);
202 void GlslManager::cleanupContext()
205 while (texture_list.peek_back()) {
206 glsl_texture texture = (glsl_texture) texture_list.peek_back();
207 glDeleteTextures(1, &texture->texture);
209 texture_list.pop_back();
212 glDeleteBuffers(1, &pbo->pbo);
219 void GlslManager::onInit( mlt_properties owner, GlslManager* filter )
221 mlt_log_debug( filter->get_service(), "%s\n", __FUNCTION__ );
223 std::string path = std::string(mlt_environment("MLT_APPDIR")).append("\\share\\movit");
224 #elif defined(__DARWIN__) && defined(RELOCATABLE)
225 std::string path = std::string(mlt_environment("MLT_APPDIR")).append("/share/movit");
227 std::string path = std::string(getenv("MLT_MOVIT_PATH") ? getenv("MLT_MOVIT_PATH") : SHADERDIR);
229 bool success = init_movit( path, MOVIT_DEBUG_ON );
230 filter->set( "glsl_supported", success );
233 void GlslManager::onClose( mlt_properties owner, GlslManager *filter )
235 filter->cleanupContext();
238 void GlslManager::onServiceChanged( mlt_properties owner, mlt_service aservice )
240 Mlt::Service service( aservice );
242 service.set( "movit chain", NULL, 0 );
246 void GlslManager::onPropertyChanged( mlt_properties owner, mlt_service service, const char* property )
248 if ( property && std::string( property ) == "disable" )
249 onServiceChanged( owner, service );
254 mlt_filter filter_glsl_manager_init( mlt_profile profile, mlt_service_type type, const char *id, char *arg )
256 GlslManager* g = GlslManager::get_instance();
260 g = new GlslManager();
261 return g->get_filter();
266 static void deleteChain( GlslChain* chain )
268 // The Input* is owned by the EffectChain, but the MltInput* is not.
269 // Thus, we have to delete it here.
270 for (std::map<mlt_producer, MltInput*>::iterator input_it = chain->inputs.begin();
271 input_it != chain->inputs.end();
273 delete input_it->second;
275 delete chain->effect_chain;
279 void* GlslManager::get_frame_specific_data( mlt_service service, mlt_frame frame, const char *key, int *length )
281 const char *unique_id = mlt_properties_get( MLT_SERVICE_PROPERTIES(service), "_unique_id" );
283 snprintf( buf, sizeof(buf), "%s_%s", key, unique_id );
284 return mlt_properties_get_data( MLT_FRAME_PROPERTIES(frame), buf, length );
287 int GlslManager::set_frame_specific_data( mlt_service service, mlt_frame frame, const char *key, void *value, int length, mlt_destructor destroy, mlt_serialiser serialise )
289 const char *unique_id = mlt_properties_get( MLT_SERVICE_PROPERTIES(service), "_unique_id" );
291 snprintf( buf, sizeof(buf), "%s_%s", key, unique_id );
292 return mlt_properties_set_data( MLT_FRAME_PROPERTIES(frame), buf, value, length, destroy, serialise );
295 void GlslManager::set_chain( mlt_service service, GlslChain* chain )
297 mlt_properties_set_data( MLT_SERVICE_PROPERTIES(service), "_movit chain", chain, 0, (mlt_destructor) deleteChain, NULL );
300 GlslChain* GlslManager::get_chain( mlt_service service )
302 return (GlslChain*) mlt_properties_get_data( MLT_SERVICE_PROPERTIES(service), "_movit chain", NULL );
305 Effect* GlslManager::get_effect( mlt_service service, mlt_frame frame )
307 return (Effect*) get_frame_specific_data( service, frame, "_movit effect", NULL );
310 Effect* GlslManager::set_effect( mlt_service service, mlt_frame frame, Effect* effect )
312 set_frame_specific_data( service, frame, "_movit effect", effect, 0, NULL, NULL );
316 MltInput* GlslManager::get_input( mlt_producer producer, mlt_frame frame )
318 return (MltInput*) get_frame_specific_data( MLT_PRODUCER_SERVICE(producer), frame, "_movit input", NULL );
321 MltInput* GlslManager::set_input( mlt_producer producer, mlt_frame frame, MltInput* input )
323 set_frame_specific_data( MLT_PRODUCER_SERVICE(producer), frame, "_movit input", input, 0, NULL, NULL );
327 uint8_t* GlslManager::get_input_pixel_pointer( mlt_producer producer, mlt_frame frame )
329 return (uint8_t*) get_frame_specific_data( MLT_PRODUCER_SERVICE(producer), frame, "_movit input pp", NULL );
332 uint8_t* GlslManager::set_input_pixel_pointer( mlt_producer producer, mlt_frame frame, uint8_t* image )
334 set_frame_specific_data( MLT_PRODUCER_SERVICE(producer), frame, "_movit input pp", image, 0, NULL, NULL );
338 mlt_service GlslManager::get_effect_input( mlt_service service, mlt_frame frame )
340 return (mlt_service) get_frame_specific_data( service, frame, "_movit effect input", NULL );
343 void GlslManager::set_effect_input( mlt_service service, mlt_frame frame, mlt_service input_service )
345 set_frame_specific_data( service, frame, "_movit effect input", input_service, 0, NULL, NULL );
348 void GlslManager::get_effect_secondary_input( mlt_service service, mlt_frame frame, mlt_service *input_service, mlt_frame *input_frame)
350 *input_service = (mlt_service) get_frame_specific_data( service, frame, "_movit effect secondary input", NULL );
351 *input_frame = (mlt_frame) get_frame_specific_data( service, frame, "_movit effect secondary input frame", NULL );
354 void GlslManager::set_effect_secondary_input( mlt_service service, mlt_frame frame, mlt_service input_service, mlt_frame input_frame )
356 set_frame_specific_data( service, frame, "_movit effect secondary input", input_service, 0, NULL, NULL );
357 set_frame_specific_data( service, frame, "_movit effect secondary input frame", input_frame, 0, NULL, NULL );
360 void GlslManager::get_effect_third_input( mlt_service service, mlt_frame frame, mlt_service *input_service, mlt_frame *input_frame)
362 *input_service = (mlt_service) get_frame_specific_data( service, frame, "_movit effect third input", NULL );
363 *input_frame = (mlt_frame) get_frame_specific_data( service, frame, "_movit effect third input frame", NULL );
366 void GlslManager::set_effect_third_input( mlt_service service, mlt_frame frame, mlt_service input_service, mlt_frame input_frame )
368 set_frame_specific_data( service, frame, "_movit effect third input", input_service, 0, NULL, NULL );
369 set_frame_specific_data( service, frame, "_movit effect third input frame", input_frame, 0, NULL, NULL );
372 int GlslManager::render_frame_texture(EffectChain *chain, mlt_frame frame, int width, int height, uint8_t **image)
374 glsl_texture texture = get_texture( width, height, GL_RGBA8 );
380 glGenFramebuffers( 1, &fbo );
382 glBindFramebuffer( GL_FRAMEBUFFER, fbo );
384 glFramebufferTexture2D( GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture->texture, 0 );
386 glBindFramebuffer( GL_FRAMEBUFFER, 0 );
390 while (syncs_to_delete.count() > 0) {
391 GLsync sync = (GLsync) syncs_to_delete.pop_front();
392 glDeleteSync( sync );
396 // Make sure we never have more than one frame pending at any time.
397 // This ensures we do not swamp the GPU with so much work
398 // that we cannot actually display the frames we generate.
399 if (prev_sync != NULL) {
401 glClientWaitSync( prev_sync, 0, GL_TIMEOUT_IGNORED );
402 glDeleteSync( prev_sync );
404 chain->render_to_fbo( fbo, width, height );
405 prev_sync = glFenceSync( GL_SYNC_GPU_COMMANDS_COMPLETE, 0 );
406 GLsync sync = glFenceSync( GL_SYNC_GPU_COMMANDS_COMPLETE, 0 );
409 glBindFramebuffer( GL_FRAMEBUFFER, 0 );
411 glDeleteFramebuffers( 1, &fbo );
414 *image = (uint8_t*) &texture->texture;
415 mlt_frame_set_image( frame, *image, 0, NULL );
416 mlt_properties_set_data( MLT_FRAME_PROPERTIES(frame), "movit.convert.texture", texture, 0,
417 (mlt_destructor) GlslManager::release_texture, NULL );
418 mlt_properties_set_data( MLT_FRAME_PROPERTIES(frame), "movit.convert.fence", sync, 0,
419 (mlt_destructor) GlslManager::delete_sync, NULL );
424 int GlslManager::render_frame_rgba(EffectChain *chain, mlt_frame frame, int width, int height, uint8_t **image)
426 glsl_texture texture = get_texture( width, height, GL_RGBA8 );
431 // Use a PBO to hold the data we read back with glReadPixels().
432 // (Intel/DRI goes into a slow path if we don't read to PBO.)
433 int img_size = width * height * 4;
434 glsl_pbo pbo = get_pbo( img_size );
436 release_texture(texture);
442 glGenFramebuffers( 1, &fbo );
444 glBindFramebuffer( GL_FRAMEBUFFER, fbo );
446 glFramebufferTexture2D( GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture->texture, 0 );
448 glBindFramebuffer( GL_FRAMEBUFFER, 0 );
451 chain->render_to_fbo( fbo, width, height );
454 glBindFramebuffer( GL_FRAMEBUFFER, fbo );
456 glBindBuffer( GL_PIXEL_PACK_BUFFER_ARB, pbo->pbo );
458 glBufferData( GL_PIXEL_PACK_BUFFER_ARB, img_size, NULL, GL_STREAM_READ );
460 glReadPixels( 0, 0, width, height, GL_BGRA, GL_UNSIGNED_BYTE, BUFFER_OFFSET(0) );
464 uint8_t* buf = (uint8_t*) glMapBuffer( GL_PIXEL_PACK_BUFFER_ARB, GL_READ_ONLY );
466 *image = (uint8_t*) mlt_pool_alloc( img_size );
467 mlt_frame_set_image( frame, *image, img_size, mlt_pool_release );
468 memcpy( *image, buf, img_size );
470 // Convert BGRA to RGBA
471 register uint8_t *p = *image;
472 register int n = width * height + 1;
479 // Release PBO and FBO
480 glUnmapBuffer( GL_PIXEL_PACK_BUFFER_ARB );
482 glBindBuffer( GL_PIXEL_PACK_BUFFER_ARB, 0 );
484 glBindFramebuffer( GL_FRAMEBUFFER, 0 );
486 glBindTexture( GL_TEXTURE_2D, 0 );
488 mlt_properties_set_data( MLT_FRAME_PROPERTIES(frame), "movit.convert.texture", texture, 0,
489 (mlt_destructor) GlslManager::release_texture, NULL);
490 glDeleteFramebuffers( 1, &fbo );
496 void GlslManager::lock_service( mlt_frame frame )
498 Mlt::Producer producer( mlt_producer_cut_parent( mlt_frame_get_original_producer( frame ) ) );
502 void GlslManager::unlock_service( mlt_frame frame )
504 Mlt::Producer producer( mlt_producer_cut_parent( mlt_frame_get_original_producer( frame ) ) );