Exemplo n.º 1
0
static int convert_image( mlt_frame frame, uint8_t **image, mlt_image_format *format, mlt_image_format output_format )
{
	// Nothing to do!
	if ( *format == output_format )
		return 0;

	mlt_properties properties = MLT_FRAME_PROPERTIES( frame );

	mlt_log_debug( NULL, "filter_movit_convert: %s -> %s\n",
		mlt_image_format_name( *format ), mlt_image_format_name( output_format ) );

	// Use CPU if glsl not initialized or not supported.
	GlslManager* glsl = GlslManager::get_instance();
	if ( !glsl || !glsl->get_int("glsl_supported" ) )
		return convert_on_cpu( frame, image, format, output_format );

	// Do non-GL image conversions on a CPU-based image converter.
	if ( *format != mlt_image_glsl && output_format != mlt_image_glsl && output_format != mlt_image_glsl_texture )
		return convert_on_cpu( frame, image, format, output_format );

	int error = 0;
	int width = mlt_properties_get_int( properties, "width" );
	int height = mlt_properties_get_int( properties, "height" );
	int img_size = mlt_image_format_size( *format, width, height, NULL );
	mlt_producer producer = mlt_producer_cut_parent( mlt_frame_get_original_producer( frame ) );
	mlt_service service = MLT_PRODUCER_SERVICE(producer);
	GlslManager::get_instance()->lock_service( frame );
	EffectChain* chain = GlslManager::get_chain( service );
	MltInput* input = GlslManager::get_input( service );

	if ( !chain || !input ) {
		GlslManager::get_instance()->unlock_service( frame );
		return 2;
	}

	if ( *format != mlt_image_glsl ) {
		bool finalize_chain = false;
		if ( output_format == mlt_image_glsl_texture ) {
			// We might already have a texture from a previous conversion from mlt_image_glsl.
			glsl_texture texture = (glsl_texture) mlt_properties_get_data( properties, "movit.convert.texture", NULL );
			// XXX: requires a special property set on the frame by the app for now
			// because we do not have reliable way to clear the texture property
			// when a downstream filter has changed image.
			if ( texture && mlt_properties_get_int( properties, "movit.convert.use_texture") ) {
				*image = (uint8_t*) &texture->texture;
				mlt_frame_set_image( frame, *image, 0, NULL );
				mlt_properties_set_int( properties, "format", output_format );
				*format = output_format;
				GlslManager::get_instance()->unlock_service( frame );
				return error;
			} else {
				// Use a separate chain to convert image in RAM to OpenGL texture.
				// Use cached chain if available and compatible.
				Mlt::Producer producer( mlt_producer_cut_parent( mlt_frame_get_original_producer( frame ) ) );
				chain = (EffectChain*) producer.get_data( "movit.convert.chain" );
				input = (MltInput*) producer.get_data( "movit.convert.input" );
				int w = producer.get_int( "movit.convert.width" );
				int h = producer.get_int( "movit.convert.height" );
				mlt_image_format f = (mlt_image_format) producer.get_int( "movit.convert.format" );
				if ( !chain || width != w || height != h || output_format != f ) {
					chain = new EffectChain( width, height );
					input = new MltInput( width, height );
					chain->add_input( input );
					chain->add_effect( new Mlt::VerticalFlip() );
					finalize_chain = true;
					producer.set( "movit.convert.chain", chain, 0, (mlt_destructor) delete_chain );
					producer.set( "movit.convert.input", input, 0 );
					producer.set( "movit.convert.width", width );
					producer.set( "movit.convert.height", height );
					producer.set( "movit.convert.format", output_format );
				}
			}
		}
		if ( *format == mlt_image_rgb24a || *format == mlt_image_opengl ) { 
			input->useFlatInput( chain, FORMAT_RGBA_POSTMULTIPLIED_ALPHA, width, height );
			input->set_pixel_data( *image );
		}
		else if ( *format == mlt_image_rgb24 ) {
			input->useFlatInput( chain, FORMAT_RGB, width, height );
			input->set_pixel_data( *image );
		}
		else if ( *format == mlt_image_yuv420p ) {
			ImageFormat image_format;
			YCbCrFormat ycbcr_format;
			if ( 709 == mlt_properties_get_int( properties, "colorspace" ) ) {
				image_format.color_space = COLORSPACE_REC_709;
				image_format.gamma_curve = GAMMA_REC_709;
				ycbcr_format.luma_coefficients = YCBCR_REC_709;
			} else if ( 576 == mlt_properties_get_int( properties, "height" ) ) {
				image_format.color_space = COLORSPACE_REC_601_625;
				image_format.gamma_curve = GAMMA_REC_601;
				ycbcr_format.luma_coefficients = YCBCR_REC_601;
			} else {
				image_format.color_space = COLORSPACE_REC_601_525;
				image_format.gamma_curve = GAMMA_REC_601;
				ycbcr_format.luma_coefficients = YCBCR_REC_601;
			}
			ycbcr_format.full_range = mlt_properties_get_int( properties, "force_full_luma" );
			ycbcr_format.chroma_subsampling_x = ycbcr_format.chroma_subsampling_y = 2;
			// TODO: make new frame properties set by producers
			ycbcr_format.cb_x_position = ycbcr_format.cr_x_position = 0.0f;
			ycbcr_format.cb_y_position = ycbcr_format.cr_y_position = 0.5f;
			input->useYCbCrInput( chain, image_format, ycbcr_format, width, height );
			input->set_pixel_data( *image );
		}
		else if ( *format == mlt_image_yuv422 ) {
			ImageFormat image_format;
			YCbCrFormat ycbcr_format;
			if ( 709 == mlt_properties_get_int( properties, "colorspace" ) ) {
				image_format.color_space = COLORSPACE_REC_709;
				image_format.gamma_curve = GAMMA_REC_709;
				ycbcr_format.luma_coefficients = YCBCR_REC_709;
			} else if ( 576 == height ) {
				image_format.color_space = COLORSPACE_REC_601_625;
				image_format.gamma_curve = GAMMA_REC_601;
				ycbcr_format.luma_coefficients = YCBCR_REC_601;
			} else {
				image_format.color_space = COLORSPACE_REC_601_525;
				image_format.gamma_curve = GAMMA_REC_601;
				ycbcr_format.luma_coefficients = YCBCR_REC_601;
			}
			ycbcr_format.full_range = mlt_properties_get_int( properties, "force_full_luma" );
			ycbcr_format.chroma_subsampling_x = 2;
			ycbcr_format.chroma_subsampling_y = 1;
			// TODO: make new frame properties set by producers
			ycbcr_format.cb_x_position = ycbcr_format.cr_x_position = 0.0f;
			ycbcr_format.cb_y_position = ycbcr_format.cr_y_position = 0.5f;
			input->useYCbCrInput( chain, image_format, ycbcr_format, width, height );
			
			// convert chunky to planar
			uint8_t* planar = (uint8_t*) mlt_pool_alloc( img_size );
			yuv422_to_yuv422p( *image, planar, width, height );
			input->set_pixel_data( planar );
			mlt_frame_set_image( frame, planar, img_size, mlt_pool_release );
		}
		// Finalize the separate conversion chain if needed.
		if ( finalize_chain )
			chain->finalize();
	}

	if ( output_format != mlt_image_glsl ) {
		glsl_fbo fbo = glsl->get_fbo( width, height );

		if ( output_format == mlt_image_glsl_texture ) {
			glsl_texture texture = glsl->get_texture( width, height, GL_RGBA );

			glBindFramebuffer( GL_FRAMEBUFFER, fbo->fbo );
			check_error();
			glFramebufferTexture2D( GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture->texture, 0 );
			check_error();
			glBindFramebuffer( GL_FRAMEBUFFER, 0 );
			check_error();

			GlslManager::render( service, chain, fbo->fbo, width, height );

			glFinish();
			check_error();
			glBindFramebuffer( GL_FRAMEBUFFER, 0 );
			check_error();

			*image = (uint8_t*) &texture->texture;
			mlt_frame_set_image( frame, *image, 0, NULL );
			mlt_properties_set_data( properties, "movit.convert.texture", texture, 0,
				(mlt_destructor) GlslManager::release_texture, NULL );
			mlt_properties_set_int( properties, "format", output_format );
			*format = output_format;
		}
		else {
			// Use a PBO to hold the data we read back with glReadPixels()
			// (Intel/DRI goes into a slow path if we don't read to PBO)
			GLenum gl_format = ( output_format == mlt_image_rgb24a || output_format == mlt_image_opengl )?
				GL_RGBA : GL_RGB;
			img_size = width * height * ( gl_format == GL_RGB? 3 : 4 );
			glsl_pbo pbo = glsl->get_pbo( img_size );
			glsl_texture texture = glsl->get_texture( width, height, gl_format );

			if ( fbo && pbo && texture ) {
				// Set the FBO
				glBindFramebuffer( GL_FRAMEBUFFER, fbo->fbo );
				check_error();
				glFramebufferTexture2D( GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture->texture, 0 );
				check_error();
				glBindFramebuffer( GL_FRAMEBUFFER, 0 );
				check_error();

				GlslManager::render( service, chain, fbo->fbo, width, height );
	
				// Read FBO into PBO
				glBindBuffer( GL_PIXEL_PACK_BUFFER_ARB, pbo->pbo );
				check_error();
				glBufferData( GL_PIXEL_PACK_BUFFER_ARB, img_size, NULL, GL_STREAM_READ );
				check_error();
				glReadPixels( 0, 0, width, height, gl_format, GL_UNSIGNED_BYTE, BUFFER_OFFSET(0) );
				check_error();
	
				// Copy from PBO
				uint8_t* buf = (uint8_t*) glMapBuffer( GL_PIXEL_PACK_BUFFER_ARB, GL_READ_ONLY );
				check_error();
				*image = (uint8_t*) mlt_pool_alloc( img_size );
				mlt_frame_set_image( frame, *image, img_size, mlt_pool_release );
				memcpy( *image, buf, img_size );

				if ( output_format == mlt_image_yuv422 || output_format == mlt_image_yuv420p ) {
					*format = mlt_image_rgb24;
					error = convert_on_cpu( frame, image, format, output_format );
				}
	
				// Release PBO and FBO
				glUnmapBuffer( GL_PIXEL_PACK_BUFFER_ARB );
				check_error();
				glBindBuffer( GL_PIXEL_PACK_BUFFER_ARB, 0 );
				check_error();
				glBindFramebuffer( GL_FRAMEBUFFER, 0 );
				check_error();
				glBindTexture( GL_TEXTURE_2D, 0 );
				check_error();
				mlt_properties_set_data( properties, "movit.convert.texture", texture, 0,
					(mlt_destructor) GlslManager::release_texture, NULL);
	
				mlt_properties_set_int( properties, "format", output_format );
				*format = output_format;
			}
			else {
				error = 1;
			}
		}
		if ( fbo ) GlslManager::release_fbo( fbo );
	}
	else {
		mlt_properties_set_int( properties, "format", output_format );
		*format = output_format;
	}
	GlslManager::get_instance()->unlock_service( frame );

	return error;
}
Exemplo n.º 2
0
static int get_image( mlt_frame a_frame, uint8_t **image, mlt_image_format *format, int *width, int *height, int writable )
{
	int error = 0;

	// Get the b frame from the stack
	mlt_frame b_frame = (mlt_frame) mlt_frame_pop_frame( a_frame );

	// Get the transition object
	mlt_transition transition = (mlt_transition) mlt_frame_pop_service( a_frame );

	// Get the properties of the transition
	mlt_properties properties = MLT_TRANSITION_PROPERTIES( transition );

	// Get the properties of the a frame
	mlt_properties a_props = MLT_FRAME_PROPERTIES( a_frame );

	// Get the movit objects
	mlt_service service = MLT_TRANSITION_SERVICE( transition );
	mlt_service_lock( service );
	EffectChain* chain = GlslManager::get_chain( service );
	MltInput* a_input = GlslManager::get_input( service );
	MltInput* b_input = (MltInput*) mlt_properties_get_data( properties, "movit input B", NULL );
	mlt_image_format output_format = *format;

	if ( !chain || !a_input ) {
		mlt_service_unlock( service );
		return 2;
	}

	// Get the frames' textures
	GLuint* texture_id[2] = {0, 0};
	*format = mlt_image_glsl_texture;
	mlt_frame_get_image( a_frame, (uint8_t**) &texture_id[0], format, width, height, 0 );
	a_input->useFBOInput( chain, *texture_id[0] );
	*format = mlt_image_glsl_texture;
	mlt_frame_get_image( b_frame, (uint8_t**) &texture_id[1], format, width, height, 0 );
	b_input->useFBOInput( chain, *texture_id[1] );

	// Set resolution to that of the a_frame
	*width = mlt_properties_get_int( a_props, "width" );
	*height = mlt_properties_get_int( a_props, "height" );

	// Setup rendering to an FBO
	GlslManager* glsl = GlslManager::get_instance();
	glsl_fbo fbo = glsl->get_fbo( *width, *height );
	if ( output_format == mlt_image_glsl_texture ) {
		glsl_texture texture = glsl->get_texture( *width, *height, GL_RGBA );

		glBindFramebuffer( GL_FRAMEBUFFER, fbo->fbo );
		check_error();
		glFramebufferTexture2D( GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture->texture, 0 );
		check_error();
		glBindFramebuffer( GL_FRAMEBUFFER, 0 );
		check_error();

		GlslManager::render( service, chain, fbo->fbo, *width, *height );

		glFinish();
		check_error();
		glBindFramebuffer( GL_FRAMEBUFFER, 0 );
		check_error();

		*image = (uint8_t*) &texture->texture;
		mlt_frame_set_image( a_frame, *image, 0, NULL );
		mlt_properties_set_data( properties, "movit.convert", texture, 0,
			(mlt_destructor) GlslManager::release_texture, NULL );
		*format = output_format;
	}
	else {
		// Use a PBO to hold the data we read back with glReadPixels()
		// (Intel/DRI goes into a slow path if we don't read to PBO)
		GLenum gl_format = ( output_format == mlt_image_rgb24a || output_format == mlt_image_opengl )?
			GL_RGBA : GL_RGB;
		int img_size = *width * *height * ( gl_format == GL_RGB? 3 : 4 );
		glsl_pbo pbo = glsl->get_pbo( img_size );
		glsl_texture texture = glsl->get_texture( *width, *height, gl_format );

		if ( fbo && pbo && texture ) {
			// Set the FBO
			glBindFramebuffer( GL_FRAMEBUFFER, fbo->fbo );
			check_error();
			glFramebufferTexture2D( GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture->texture, 0 );
			check_error();
			glBindFramebuffer( GL_FRAMEBUFFER, 0 );
			check_error();

			GlslManager::render( service, chain, fbo->fbo, *width, *height );

			// Read FBO into PBO
			glBindBuffer( GL_PIXEL_PACK_BUFFER_ARB, pbo->pbo );
			check_error();
			glBufferData( GL_PIXEL_PACK_BUFFER_ARB, img_size, NULL, GL_STREAM_READ );
			check_error();
			glReadPixels( 0, 0, *width, *height, gl_format, GL_UNSIGNED_BYTE, BUFFER_OFFSET(0) );
			check_error();

			// Copy from PBO
			uint8_t* buf = (uint8_t*) glMapBuffer( GL_PIXEL_PACK_BUFFER_ARB, GL_READ_ONLY );
			check_error();

			*format = gl_format == GL_RGBA ? mlt_image_rgb24a : mlt_image_rgb24;
			*image = (uint8_t*) mlt_pool_alloc( img_size );
			mlt_frame_set_image( a_frame, *image, img_size, mlt_pool_release );
			memcpy( *image, buf, img_size );

			// Release PBO and FBO
			glUnmapBuffer( GL_PIXEL_PACK_BUFFER_ARB );
			check_error();
			glBindBuffer( GL_PIXEL_PACK_BUFFER_ARB, 0 );
			check_error();
			glBindFramebuffer( GL_FRAMEBUFFER, 0 );
			check_error();
			glBindTexture( GL_TEXTURE_2D, 0 );
			check_error();
			GlslManager::release_texture( texture );
		}
		else {
			error = 1;
		}
	}
	if ( fbo ) GlslManager::release_fbo( fbo );
	mlt_service_lock( service );

	return error;
}