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 void dec_ref_and_delete(GlslManager *p)
47 if (p->dec_ref() == 0) {
52 GlslManager::GlslManager()
53 : Mlt::Filter( mlt_filter_new() )
54 , resource_pool(new ResourcePool())
60 mlt_filter filter = get_filter();
62 // Set the mlt_filter child in case we choose to override virtual functions.
64 add_ref(mlt_global_properties());
66 mlt_events_register( get_properties(), "init glsl", NULL );
67 mlt_events_register( get_properties(), "close glsl", NULL );
68 initEvent = listen("init glsl", this, (mlt_listener) GlslManager::onInit);
69 closeEvent = listen("close glsl", this, (mlt_listener) GlslManager::onClose);
73 GlslManager::~GlslManager()
75 mlt_log_debug(get_service(), "%s\n", __FUNCTION__);
77 // XXX If there is still a frame holding a reference to a texture after this
78 // destructor is called, then it will crash in release_texture().
79 // while (texture_list.peek_back())
80 // delete (glsl_texture) texture_list.pop_back();
83 if (prev_sync != NULL) {
84 glDeleteSync( prev_sync );
86 while (syncs_to_delete.count() > 0) {
87 GLsync sync = (GLsync) syncs_to_delete.pop_front();
93 void GlslManager::add_ref(mlt_properties properties)
96 mlt_properties_set_data(properties, "glslManager", this, 0,
97 (mlt_destructor) dec_ref_and_delete, NULL);
100 GlslManager* GlslManager::get_instance()
102 return (GlslManager*) mlt_properties_get_data(mlt_global_properties(), "glslManager", 0);
105 glsl_texture GlslManager::get_texture(int width, int height, GLint internal_format)
108 for (int i = 0; i < texture_list.count(); ++i) {
109 glsl_texture tex = (glsl_texture) texture_list.peek(i);
110 if (!tex->used && (tex->width == width) && (tex->height == height) && (tex->internal_format == internal_format)) {
111 glBindTexture(GL_TEXTURE_2D, tex->texture);
112 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
113 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
114 glBindTexture( GL_TEXTURE_2D, 0);
121 // Recycle a glsl_texture with deleted glTexture.
122 glsl_texture gtex = 0;
123 for (int i = 0; i < texture_list.count(); ++i) {
124 glsl_texture tex = (glsl_texture) texture_list.peek(i);
125 if (!tex->used && !tex->width && !tex->height) {
133 glGenTextures(1, &tex);
135 glDeleteTextures(1, &tex);
140 gtex = new glsl_texture_s;
145 glBindTexture( GL_TEXTURE_2D, tex );
146 glTexImage2D( GL_TEXTURE_2D, 0, internal_format, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL );
147 glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE );
148 glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE );
149 glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST );
150 glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST );
151 glBindTexture( GL_TEXTURE_2D, 0 );
155 gtex->height = height;
156 gtex->internal_format = internal_format;
159 texture_list.push_back(gtex);
164 void GlslManager::release_texture(glsl_texture texture)
169 void GlslManager::delete_sync(GLsync sync)
171 // We do not know which thread we are called from, and we can only
172 // delete this if we are in one with a valid OpenGL context.
173 // Thus, store it for later deletion in render_frame_texture().
174 GlslManager* g = GlslManager::get_instance();
176 g->syncs_to_delete.push_back(sync);
180 glsl_pbo GlslManager::get_pbo(int size)
185 glGenBuffers(1, &pb);
191 pbo = new glsl_pbo_s;
193 glDeleteBuffers(1, &pb);
200 if (size > pbo->size) {
201 glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, pbo->pbo);
202 glBufferData(GL_PIXEL_UNPACK_BUFFER_ARB, size, NULL, GL_STREAM_DRAW);
203 glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, 0);
210 void GlslManager::cleanupContext()
213 for (int i = 0; i < texture_list.count(); ++i) {
214 glsl_texture texture = (glsl_texture) texture_list.peek(i);
215 glDeleteTextures(1, &texture->texture);
221 glDeleteBuffers(1, &pbo->pbo);
228 void GlslManager::onInit( mlt_properties owner, GlslManager* filter )
230 mlt_log_debug( filter->get_service(), "%s\n", __FUNCTION__ );
232 std::string path = std::string(mlt_environment("MLT_APPDIR")).append("\\share\\movit");
233 #elif defined(__DARWIN__) && defined(RELOCATABLE)
234 std::string path = std::string(mlt_environment("MLT_APPDIR")).append("/share/movit");
236 std::string path = std::string(getenv("MLT_MOVIT_PATH") ? getenv("MLT_MOVIT_PATH") : SHADERDIR);
238 ::init_movit( path, mlt_log_get_level() == MLT_LOG_DEBUG? MOVIT_DEBUG_ON : MOVIT_DEBUG_OFF );
239 filter->set( "glsl_supported", movit_initialized );
242 void GlslManager::onClose( mlt_properties owner, GlslManager *filter )
244 filter->cleanupContext();
247 void GlslManager::onServiceChanged( mlt_properties owner, mlt_service aservice )
249 Mlt::Service service( aservice );
251 service.set( "movit chain", NULL, 0 );
255 void GlslManager::onPropertyChanged( mlt_properties owner, mlt_service service, const char* property )
257 if ( property && std::string( property ) == "disable" )
258 onServiceChanged( owner, service );
263 mlt_filter filter_glsl_manager_init( mlt_profile profile, mlt_service_type type, const char *id, char *arg )
265 GlslManager* g = GlslManager::get_instance();
269 g = new GlslManager();
270 return g->get_filter();
275 static void deleteChain( GlslChain* chain )
277 // The Input* is owned by the EffectChain, but the MltInput* is not.
278 // Thus, we have to delete it here.
279 for (std::map<mlt_producer, MltInput*>::iterator input_it = chain->inputs.begin();
280 input_it != chain->inputs.end();
282 delete input_it->second;
284 delete chain->effect_chain;
288 void* GlslManager::get_frame_specific_data( mlt_service service, mlt_frame frame, const char *key, int *length )
290 const char *unique_id = mlt_properties_get( MLT_SERVICE_PROPERTIES(service), "_unique_id" );
292 snprintf( buf, sizeof(buf), "%s_%s", key, unique_id );
293 return mlt_properties_get_data( MLT_FRAME_PROPERTIES(frame), buf, length );
296 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 )
298 const char *unique_id = mlt_properties_get( MLT_SERVICE_PROPERTIES(service), "_unique_id" );
300 snprintf( buf, sizeof(buf), "%s_%s", key, unique_id );
301 return mlt_properties_set_data( MLT_FRAME_PROPERTIES(frame), buf, value, length, destroy, serialise );
304 void GlslManager::set_chain( mlt_service service, GlslChain* chain )
306 mlt_properties_set_data( MLT_SERVICE_PROPERTIES(service), "_movit chain", chain, 0, (mlt_destructor) deleteChain, NULL );
309 GlslChain* GlslManager::get_chain( mlt_service service )
311 return (GlslChain*) mlt_properties_get_data( MLT_SERVICE_PROPERTIES(service), "_movit chain", NULL );
314 Effect* GlslManager::get_effect( mlt_service service, mlt_frame frame )
316 return (Effect*) get_frame_specific_data( service, frame, "_movit effect", NULL );
319 Effect* GlslManager::set_effect( mlt_service service, mlt_frame frame, Effect* effect )
321 set_frame_specific_data( service, frame, "_movit effect", effect, 0, NULL, NULL );
325 MltInput* GlslManager::get_input( mlt_producer producer, mlt_frame frame )
327 return (MltInput*) get_frame_specific_data( MLT_PRODUCER_SERVICE(producer), frame, "_movit input", NULL );
330 MltInput* GlslManager::set_input( mlt_producer producer, mlt_frame frame, MltInput* input )
332 set_frame_specific_data( MLT_PRODUCER_SERVICE(producer), frame, "_movit input", input, 0, NULL, NULL );
336 uint8_t* GlslManager::get_input_pixel_pointer( mlt_producer producer, mlt_frame frame )
338 return (uint8_t*) get_frame_specific_data( MLT_PRODUCER_SERVICE(producer), frame, "_movit input pp", NULL );
341 uint8_t* GlslManager::set_input_pixel_pointer( mlt_producer producer, mlt_frame frame, uint8_t* image )
343 set_frame_specific_data( MLT_PRODUCER_SERVICE(producer), frame, "_movit input pp", image, 0, NULL, NULL );
347 mlt_service GlslManager::get_effect_input( mlt_service service, mlt_frame frame )
349 return (mlt_service) get_frame_specific_data( service, frame, "_movit effect input", NULL );
352 void GlslManager::set_effect_input( mlt_service service, mlt_frame frame, mlt_service input_service )
354 set_frame_specific_data( service, frame, "_movit effect input", input_service, 0, NULL, NULL );
357 void GlslManager::get_effect_secondary_input( mlt_service service, mlt_frame frame, mlt_service *input_service, mlt_frame *input_frame)
359 *input_service = (mlt_service) get_frame_specific_data( service, frame, "_movit effect secondary input", NULL );
360 *input_frame = (mlt_frame) get_frame_specific_data( service, frame, "_movit effect secondary input frame", NULL );
363 void GlslManager::set_effect_secondary_input( mlt_service service, mlt_frame frame, mlt_service input_service, mlt_frame input_frame )
365 set_frame_specific_data( service, frame, "_movit effect secondary input", input_service, 0, NULL, NULL );
366 set_frame_specific_data( service, frame, "_movit effect secondary input frame", input_frame, 0, NULL, NULL );
369 int GlslManager::render_frame_texture(EffectChain *chain, mlt_frame frame, int width, int height, uint8_t **image)
371 glsl_texture texture = get_texture( width, height, GL_RGBA8 );
377 glGenFramebuffers( 1, &fbo );
379 glBindFramebuffer( GL_FRAMEBUFFER, fbo );
381 glFramebufferTexture2D( GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture->texture, 0 );
383 glBindFramebuffer( GL_FRAMEBUFFER, 0 );
387 while (syncs_to_delete.count() > 0) {
388 GLsync sync = (GLsync) syncs_to_delete.pop_front();
389 glDeleteSync( sync );
393 // Make sure we never have more than one frame pending at any time.
394 // This ensures we do not swamp the GPU with so much work
395 // that we cannot actually display the frames we generate.
396 if (prev_sync != NULL) {
398 glClientWaitSync( prev_sync, 0, GL_TIMEOUT_IGNORED );
399 glDeleteSync( prev_sync );
401 chain->render_to_fbo( fbo, width, height );
402 prev_sync = glFenceSync( GL_SYNC_GPU_COMMANDS_COMPLETE, 0 );
403 GLsync sync = glFenceSync( GL_SYNC_GPU_COMMANDS_COMPLETE, 0 );
406 glBindFramebuffer( GL_FRAMEBUFFER, 0 );
408 glDeleteFramebuffers( 1, &fbo );
411 *image = (uint8_t*) &texture->texture;
412 mlt_frame_set_image( frame, *image, 0, NULL );
413 mlt_properties_set_data( MLT_FRAME_PROPERTIES(frame), "movit.convert.texture", texture, 0,
414 (mlt_destructor) GlslManager::release_texture, NULL );
415 mlt_properties_set_data( MLT_FRAME_PROPERTIES(frame), "movit.convert.fence", sync, 0,
416 (mlt_destructor) GlslManager::delete_sync, NULL );
421 int GlslManager::render_frame_rgba(EffectChain *chain, mlt_frame frame, int width, int height, uint8_t **image)
423 glsl_texture texture = get_texture( width, height, GL_RGBA8 );
428 // Use a PBO to hold the data we read back with glReadPixels().
429 // (Intel/DRI goes into a slow path if we don't read to PBO.)
430 int img_size = width * height * 4;
431 glsl_pbo pbo = get_pbo( img_size );
433 release_texture(texture);
439 glGenFramebuffers( 1, &fbo );
441 glBindFramebuffer( GL_FRAMEBUFFER, fbo );
443 glFramebufferTexture2D( GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture->texture, 0 );
445 glBindFramebuffer( GL_FRAMEBUFFER, 0 );
448 chain->render_to_fbo( fbo, width, height );
451 glBindFramebuffer( GL_FRAMEBUFFER, fbo );
453 glBindBuffer( GL_PIXEL_PACK_BUFFER_ARB, pbo->pbo );
455 glBufferData( GL_PIXEL_PACK_BUFFER_ARB, img_size, NULL, GL_STREAM_READ );
457 glReadPixels( 0, 0, width, height, GL_BGRA, GL_UNSIGNED_BYTE, BUFFER_OFFSET(0) );
461 uint8_t* buf = (uint8_t*) glMapBuffer( GL_PIXEL_PACK_BUFFER_ARB, GL_READ_ONLY );
463 *image = (uint8_t*) mlt_pool_alloc( img_size );
464 mlt_frame_set_image( frame, *image, img_size, mlt_pool_release );
465 memcpy( *image, buf, img_size );
467 // Convert BGRA to RGBA
468 register uint8_t *p = *image;
469 register int n = width * height + 1;
476 // Release PBO and FBO
477 glUnmapBuffer( GL_PIXEL_PACK_BUFFER_ARB );
479 glBindBuffer( GL_PIXEL_PACK_BUFFER_ARB, 0 );
481 glBindFramebuffer( GL_FRAMEBUFFER, 0 );
483 glBindTexture( GL_TEXTURE_2D, 0 );
485 mlt_properties_set_data( MLT_FRAME_PROPERTIES(frame), "movit.convert.texture", texture, 0,
486 (mlt_destructor) GlslManager::release_texture, NULL);
487 glDeleteFramebuffers( 1, &fbo );
493 void GlslManager::lock_service( mlt_frame frame )
495 Mlt::Producer producer( mlt_producer_cut_parent( mlt_frame_get_original_producer( frame ) ) );
499 void GlslManager::unlock_service( mlt_frame frame )
501 Mlt::Producer producer( mlt_producer_cut_parent( mlt_frame_get_original_producer( frame ) ) );