// Create an MltInput for an image with the given format and dimensions.
static MltInput* create_input( mlt_properties properties, mlt_image_format format, int aspect_width, int aspect_height, int width, int height )
{
MltInput* input = new MltInput( format );
if ( format == mlt_image_rgb24a || format == mlt_image_opengl ) {
// TODO: Get the color space if available.
input->useFlatInput( FORMAT_RGBA_POSTMULTIPLIED_ALPHA, width, height );
}
else if ( format == mlt_image_rgb24 ) {
// TODO: Get the color space if available.
input->useFlatInput( FORMAT_RGB, width, height );
}
else if ( format == mlt_image_yuv420p ) {
ImageFormat image_format;
YCbCrFormat ycbcr_format;
get_format_from_properties( properties, &image_format, &ycbcr_format );
ycbcr_format.chroma_subsampling_x = ycbcr_format.chroma_subsampling_y = 2;
input->useYCbCrInput( image_format, ycbcr_format, width, height );
}
else if ( format == mlt_image_yuv422 ) {
ImageFormat image_format;
YCbCrFormat ycbcr_format;
get_format_from_properties( properties, &image_format, &ycbcr_format );
ycbcr_format.chroma_subsampling_x = 2;
ycbcr_format.chroma_subsampling_y = 1;
input->useYCbCrInput( image_format, ycbcr_format, width, height );
}
return input;
}
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;
}
