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 );
83 while (syncs_to_delete.count() > 0) {
84 GLsync sync = (GLsync) syncs_to_delete.pop_front();
89 GlslManager* GlslManager::get_instance()
91 return (GlslManager*) mlt_properties_get_data(mlt_global_properties(), "glslManager", 0);
94 glsl_fbo GlslManager::get_fbo(int width, int height)
96 #if defined(__DARWIN__)
97 CGLContextObj context = CGLGetCurrentContext();
99 HGLRC context = wglGetCurrentContext();
101 GLXContext context = glXGetCurrentContext();
105 for (int i = 0; i < fbo_list.count(); ++i) {
106 glsl_fbo fbo = (glsl_fbo) fbo_list.peek(i);
107 if (!fbo->used && (fbo->width == width) && (fbo->height == height) && (fbo->context == context)) {
116 glGenFramebuffers(1, &fb);
120 glsl_fbo fbo = new glsl_fbo_s;
122 glDeleteFramebuffers(1, &fb);
127 fbo->height = height;
129 fbo->context = context;
131 fbo_list.push_back(fbo);
136 void GlslManager::release_fbo(glsl_fbo fbo)
141 glsl_texture GlslManager::get_texture(int width, int height, GLint internal_format)
144 for (int i = 0; i < texture_list.count(); ++i) {
145 glsl_texture tex = (glsl_texture) texture_list.peek(i);
146 if (!tex->used && (tex->width == width) && (tex->height == height) && (tex->internal_format == internal_format)) {
147 glBindTexture(GL_TEXTURE_2D, tex->texture);
148 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
149 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
150 glBindTexture( GL_TEXTURE_2D, 0);
157 // Recycle a glsl_texture with deleted glTexture.
158 glsl_texture gtex = 0;
159 for (int i = 0; i < texture_list.count(); ++i) {
160 glsl_texture tex = (glsl_texture) texture_list.peek(i);
161 if (!tex->used && !tex->width && !tex->height) {
169 glGenTextures(1, &tex);
171 glDeleteTextures(1, &tex);
176 gtex = new glsl_texture_s;
181 glBindTexture( GL_TEXTURE_2D, tex );
182 glTexImage2D( GL_TEXTURE_2D, 0, internal_format, width, height, 0, internal_format, GL_UNSIGNED_BYTE, NULL );
183 glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE );
184 glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE );
185 glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST );
186 glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST );
187 glBindTexture( GL_TEXTURE_2D, 0 );
191 gtex->height = height;
192 gtex->internal_format = internal_format;
195 texture_list.push_back(gtex);
200 void GlslManager::release_texture(glsl_texture texture)
205 void GlslManager::delete_sync(GLsync sync)
207 // We do not know which thread we are called from, and we can only
208 // delete this if we are in one with a valid OpenGL context.
209 // Thus, store it for later deletion in render_frame_texture().
210 GlslManager* g = GlslManager::get_instance();
212 g->syncs_to_delete.push_back(sync);
216 glsl_pbo GlslManager::get_pbo(int size)
221 glGenBuffers(1, &pb);
227 pbo = new glsl_pbo_s;
229 glDeleteBuffers(1, &pb);
236 if (size > pbo->size) {
237 glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, pbo->pbo);
238 glBufferData(GL_PIXEL_UNPACK_BUFFER_ARB, size, NULL, GL_STREAM_DRAW);
239 glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, 0);
246 void GlslManager::cleanupContext()
249 while (fbo_list.peek_back()) {
250 glsl_fbo fbo = (glsl_fbo) fbo_list.pop_back();
251 glDeleteFramebuffers(1, &fbo->fbo);
254 for (int i = 0; i < texture_list.count(); ++i) {
255 glsl_texture texture = (glsl_texture) texture_list.peek(i);
256 glDeleteTextures(1, &texture->texture);
262 glDeleteBuffers(1, &pbo->pbo);
269 void GlslManager::onInit( mlt_properties owner, GlslManager* filter )
271 mlt_log_debug( filter->get_service(), "%s\n", __FUNCTION__ );
273 std::string path = std::string(mlt_environment("MLT_APPDIR")).append("\\share\\movit");
274 #elif defined(__DARWIN__) && defined(RELOCATABLE)
275 std::string path = std::string(mlt_environment("MLT_APPDIR")).append("/share/movit");
277 std::string path = std::string(getenv("MLT_MOVIT_PATH") ? getenv("MLT_MOVIT_PATH") : SHADERDIR);
279 ::init_movit( path, mlt_log_get_level() == MLT_LOG_DEBUG? MOVIT_DEBUG_ON : MOVIT_DEBUG_OFF );
280 filter->set( "glsl_supported", movit_initialized );
283 void GlslManager::onClose( mlt_properties owner, GlslManager *filter )
285 filter->cleanupContext();
288 void GlslManager::onServiceChanged( mlt_properties owner, mlt_service aservice )
290 Mlt::Service service( aservice );
292 service.set( "movit chain", NULL, 0 );
296 void GlslManager::onPropertyChanged( mlt_properties owner, mlt_service service, const char* property )
298 if ( property && std::string( property ) == "disable" )
299 onServiceChanged( owner, service );
304 mlt_filter filter_glsl_manager_init( mlt_profile profile, mlt_service_type type, const char *id, char *arg )
306 GlslManager* g = GlslManager::get_instance();
310 g = new GlslManager();
311 return g->get_filter();
316 static void deleteChain( GlslChain* chain )
318 delete chain->effect_chain;
322 void* GlslManager::get_frame_specific_data( mlt_service service, mlt_frame frame, const char *key, int *length )
324 const char *unique_id = mlt_properties_get( MLT_SERVICE_PROPERTIES(service), "_unique_id" );
326 snprintf( buf, sizeof(buf), "%s_%s", key, unique_id );
327 return mlt_properties_get_data( MLT_FRAME_PROPERTIES(frame), buf, length );
330 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 )
332 const char *unique_id = mlt_properties_get( MLT_SERVICE_PROPERTIES(service), "_unique_id" );
334 snprintf( buf, sizeof(buf), "%s_%s", key, unique_id );
335 return mlt_properties_set_data( MLT_FRAME_PROPERTIES(frame), buf, value, length, destroy, serialise );
338 void GlslManager::set_chain( mlt_service service, GlslChain* chain )
340 mlt_properties_set_data( MLT_SERVICE_PROPERTIES(service), "_movit chain", chain, 0, (mlt_destructor) deleteChain, NULL );
343 GlslChain* GlslManager::get_chain( mlt_service service )
345 return (GlslChain*) mlt_properties_get_data( MLT_SERVICE_PROPERTIES(service), "_movit chain", NULL );
348 Effect* GlslManager::get_effect( mlt_service service, mlt_frame frame )
350 return (Effect*) get_frame_specific_data( service, frame, "_movit effect", NULL );
353 Effect* GlslManager::set_effect( mlt_service service, mlt_frame frame, Effect* effect )
355 set_frame_specific_data( service, frame, "_movit effect", effect, 0, NULL, NULL );
359 MltInput* GlslManager::get_input( mlt_producer producer, mlt_frame frame )
361 return (MltInput*) get_frame_specific_data( MLT_PRODUCER_SERVICE(producer), frame, "_movit input", NULL );
364 MltInput* GlslManager::set_input( mlt_producer producer, mlt_frame frame, MltInput* input )
366 set_frame_specific_data( MLT_PRODUCER_SERVICE(producer), frame, "_movit input", input, 0, NULL, NULL );
370 uint8_t* GlslManager::get_input_pixel_pointer( mlt_producer producer, mlt_frame frame )
372 return (uint8_t*) get_frame_specific_data( MLT_PRODUCER_SERVICE(producer), frame, "_movit input pp", NULL );
375 uint8_t* GlslManager::set_input_pixel_pointer( mlt_producer producer, mlt_frame frame, uint8_t* image )
377 set_frame_specific_data( MLT_PRODUCER_SERVICE(producer), frame, "_movit input pp", image, 0, NULL, NULL );
381 mlt_service GlslManager::get_effect_input( mlt_service service, mlt_frame frame )
383 return (mlt_service) get_frame_specific_data( service, frame, "_movit effect input", NULL );
386 void GlslManager::set_effect_input( mlt_service service, mlt_frame frame, mlt_service input_service )
388 set_frame_specific_data( service, frame, "_movit effect input", input_service, 0, NULL, NULL );
391 void GlslManager::get_effect_secondary_input( mlt_service service, mlt_frame frame, mlt_service *input_service, mlt_frame *input_frame)
393 *input_service = (mlt_service) get_frame_specific_data( service, frame, "_movit effect secondary input", NULL );
394 *input_frame = (mlt_frame) get_frame_specific_data( service, frame, "_movit effect secondary input frame", NULL );
397 void GlslManager::set_effect_secondary_input( mlt_service service, mlt_frame frame, mlt_service input_service, mlt_frame input_frame )
399 set_frame_specific_data( service, frame, "_movit effect secondary input", input_service, 0, NULL, NULL );
400 set_frame_specific_data( service, frame, "_movit effect secondary input frame", input_frame, 0, NULL, NULL );
403 int GlslManager::render_frame_texture(EffectChain *chain, mlt_frame frame, int width, int height, uint8_t **image)
405 glsl_fbo fbo = get_fbo( width, height );
407 glsl_texture texture = get_texture( width, height, GL_RGBA );
413 glBindFramebuffer( GL_FRAMEBUFFER, fbo->fbo );
415 glFramebufferTexture2D( GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture->texture, 0 );
417 glBindFramebuffer( GL_FRAMEBUFFER, 0 );
421 while (syncs_to_delete.count() > 0) {
422 GLsync sync = (GLsync) syncs_to_delete.pop_front();
423 glDeleteSync( sync );
427 // Make sure we never have more than one frame pending at any time.
428 // This ensures we do not swamp the GPU with so much work
429 // that we cannot actually display the frames we generate.
430 if (prev_sync != NULL) {
432 glClientWaitSync( prev_sync, 0, GL_TIMEOUT_IGNORED );
433 glDeleteSync( prev_sync );
435 chain->render_to_fbo( fbo->fbo, width, height );
436 prev_sync = glFenceSync( GL_SYNC_GPU_COMMANDS_COMPLETE, 0 );
437 GLsync sync = glFenceSync( GL_SYNC_GPU_COMMANDS_COMPLETE, 0 );
440 glBindFramebuffer( GL_FRAMEBUFFER, 0 );
444 *image = (uint8_t*) &texture->texture;
445 mlt_frame_set_image( frame, *image, 0, NULL );
446 mlt_properties_set_data( MLT_FRAME_PROPERTIES(frame), "movit.convert.texture", texture, 0,
447 (mlt_destructor) GlslManager::release_texture, NULL );
448 mlt_properties_set_data( MLT_FRAME_PROPERTIES(frame), "movit.convert.fence", sync, 0,
449 (mlt_destructor) GlslManager::delete_sync, NULL );
454 int GlslManager::render_frame_rgba(EffectChain *chain, mlt_frame frame, int width, int height, uint8_t **image)
456 glsl_fbo fbo = get_fbo( width, height );
458 glsl_texture texture = get_texture( width, height, GL_RGBA );
464 // Use a PBO to hold the data we read back with glReadPixels().
465 // (Intel/DRI goes into a slow path if we don't read to PBO.)
466 int img_size = width * height * 4;
467 glsl_pbo pbo = get_pbo( img_size );
470 release_texture(texture);
476 glBindFramebuffer( GL_FRAMEBUFFER, fbo->fbo );
478 glFramebufferTexture2D( GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture->texture, 0 );
480 glBindFramebuffer( GL_FRAMEBUFFER, 0 );
483 chain->render_to_fbo( fbo->fbo, width, height );
486 glBindFramebuffer( GL_FRAMEBUFFER, fbo->fbo );
488 glBindBuffer( GL_PIXEL_PACK_BUFFER_ARB, pbo->pbo );
490 glBufferData( GL_PIXEL_PACK_BUFFER_ARB, img_size, NULL, GL_STREAM_READ );
492 glReadPixels( 0, 0, width, height, GL_BGRA, GL_UNSIGNED_BYTE, BUFFER_OFFSET(0) );
496 uint8_t* buf = (uint8_t*) glMapBuffer( GL_PIXEL_PACK_BUFFER_ARB, GL_READ_ONLY );
498 *image = (uint8_t*) mlt_pool_alloc( img_size );
499 mlt_frame_set_image( frame, *image, img_size, mlt_pool_release );
500 memcpy( *image, buf, img_size );
502 // Convert BGRA to RGBA
503 register uint8_t *p = *image;
504 register int n = width * height + 1;
511 // Release PBO and FBO
512 glUnmapBuffer( GL_PIXEL_PACK_BUFFER_ARB );
514 glBindBuffer( GL_PIXEL_PACK_BUFFER_ARB, 0 );
516 glBindFramebuffer( GL_FRAMEBUFFER, 0 );
518 glBindTexture( GL_TEXTURE_2D, 0 );
520 mlt_properties_set_data( MLT_FRAME_PROPERTIES(frame), "movit.convert.texture", texture, 0,
521 (mlt_destructor) GlslManager::release_texture, NULL);
527 void GlslManager::lock_service( mlt_frame frame )
529 Mlt::Producer producer( mlt_producer_cut_parent( mlt_frame_get_original_producer( frame ) ) );
533 void GlslManager::unlock_service( mlt_frame frame )
535 Mlt::Producer producer( mlt_producer_cut_parent( mlt_frame_get_original_producer( frame ) ) );