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1311 lines
34 KiB
1311 lines
34 KiB
/*
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* mlt_frame.c -- interface for all frame classes
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* Copyright (C) 2003-2004 Ushodaya Enterprises Limited
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* Author: Charles Yates <charles.yates@pandora.be>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "config.h"
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#include "mlt_frame.h"
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#include "mlt_producer.h"
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#include "mlt_factory.h"
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#include "mlt_profile.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <math.h>
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/** Constructor for a frame.
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*/
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mlt_frame mlt_frame_init( )
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{
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// Allocate a frame
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mlt_frame this = calloc( sizeof( struct mlt_frame_s ), 1 );
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if ( this != NULL )
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{
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// Initialise the properties
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mlt_properties properties = &this->parent;
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mlt_properties_init( properties, this );
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// Set default properties on the frame
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mlt_properties_set_position( properties, "_position", 0.0 );
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mlt_properties_set_data( properties, "image", NULL, 0, NULL, NULL );
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mlt_properties_set_int( properties, "width", mlt_profile_get()->width );
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mlt_properties_set_int( properties, "height", mlt_profile_get()->height );
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mlt_properties_set_int( properties, "normalised_width", mlt_profile_get()->width );
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mlt_properties_set_int( properties, "normalised_height", mlt_profile_get()->height );
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mlt_properties_set_double( properties, "aspect_ratio", mlt_profile_sar( NULL ) );
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mlt_properties_set_data( properties, "audio", NULL, 0, NULL, NULL );
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mlt_properties_set_data( properties, "alpha", NULL, 0, NULL, NULL );
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// Construct stacks for frames and methods
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this->stack_image = mlt_deque_init( );
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this->stack_audio = mlt_deque_init( );
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this->stack_service = mlt_deque_init( );
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}
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return this;
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}
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/** Fetch the frames properties.
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*/
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mlt_properties mlt_frame_properties( mlt_frame this )
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{
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return this != NULL ? &this->parent : NULL;
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}
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/** Check if we have a way to derive something other than a test card.
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*/
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int mlt_frame_is_test_card( mlt_frame this )
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{
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return mlt_deque_count( this->stack_image ) == 0 || mlt_properties_get_int( MLT_FRAME_PROPERTIES( this ), "test_image" );
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}
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/** Check if we have a way to derive something other than test audio.
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*/
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int mlt_frame_is_test_audio( mlt_frame this )
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{
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return mlt_deque_count( this->stack_audio ) == 0 || mlt_properties_get_int( MLT_FRAME_PROPERTIES( this ), "test_audio" );
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}
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/** Get the aspect ratio of the frame.
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*/
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double mlt_frame_get_aspect_ratio( mlt_frame this )
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{
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return mlt_properties_get_double( MLT_FRAME_PROPERTIES( this ), "aspect_ratio" );
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}
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/** Set the aspect ratio of the frame.
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*/
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int mlt_frame_set_aspect_ratio( mlt_frame this, double value )
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{
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return mlt_properties_set_double( MLT_FRAME_PROPERTIES( this ), "aspect_ratio", value );
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}
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/** Get the position of this frame.
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*/
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mlt_position mlt_frame_get_position( mlt_frame this )
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{
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int pos = mlt_properties_get_position( MLT_FRAME_PROPERTIES( this ), "_position" );
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return pos < 0 ? 0 : pos;
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}
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/** Set the position of this frame.
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*/
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int mlt_frame_set_position( mlt_frame this, mlt_position value )
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{
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return mlt_properties_set_position( MLT_FRAME_PROPERTIES( this ), "_position", value );
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}
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/** Stack a get_image callback.
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*/
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int mlt_frame_push_get_image( mlt_frame this, mlt_get_image get_image )
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{
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return mlt_deque_push_back( this->stack_image, get_image );
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}
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/** Pop a get_image callback.
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*/
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mlt_get_image mlt_frame_pop_get_image( mlt_frame this )
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{
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return mlt_deque_pop_back( this->stack_image );
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}
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/** Push a frame.
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*/
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int mlt_frame_push_frame( mlt_frame this, mlt_frame that )
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{
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return mlt_deque_push_back( this->stack_image, that );
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}
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/** Pop a frame.
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*/
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mlt_frame mlt_frame_pop_frame( mlt_frame this )
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{
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return mlt_deque_pop_back( this->stack_image );
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}
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/** Push a service.
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*/
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int mlt_frame_push_service( mlt_frame this, void *that )
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{
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return mlt_deque_push_back( this->stack_image, that );
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}
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/** Pop a service.
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*/
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void *mlt_frame_pop_service( mlt_frame this )
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{
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return mlt_deque_pop_back( this->stack_image );
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}
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/** Push a service.
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*/
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int mlt_frame_push_service_int( mlt_frame this, int that )
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{
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return mlt_deque_push_back_int( this->stack_image, that );
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}
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/** Pop a service.
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*/
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int mlt_frame_pop_service_int( mlt_frame this )
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{
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return mlt_deque_pop_back_int( this->stack_image );
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}
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/** Push an audio item on the stack.
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*/
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int mlt_frame_push_audio( mlt_frame this, void *that )
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{
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return mlt_deque_push_back( this->stack_audio, that );
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}
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/** Pop an audio item from the stack
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*/
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void *mlt_frame_pop_audio( mlt_frame this )
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{
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return mlt_deque_pop_back( this->stack_audio );
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}
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/** Return the service stack
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*/
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mlt_deque mlt_frame_service_stack( mlt_frame this )
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{
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return this->stack_service;
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}
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/** Replace image stack with the information provided.
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This might prove to be unreliable and restrictive - the idea is that a transition
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which normally uses two images may decide to only use the b frame (ie: in the case
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of a composite where the b frame completely obscures the a frame).
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The image must be writable and the destructor for the image itself must be taken
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care of on another frame and that frame cannot have a replace applied to it...
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Further it assumes that no alpha mask is in use.
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For these reasons, it can only be used in a specific situation - when you have
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multiple tracks each with their own transition and these transitions are applied
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in a strictly reversed order (ie: highest numbered [lowest track] is processed
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first).
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More reliable approach - the cases should be detected during the process phase
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and the upper tracks should simply not be invited to stack...
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*/
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void mlt_frame_replace_image( mlt_frame this, uint8_t *image, mlt_image_format format, int width, int height )
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{
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// Remove all items from the stack
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while( mlt_deque_pop_back( this->stack_image ) ) ;
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// Update the information
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mlt_properties_set_data( MLT_FRAME_PROPERTIES( this ), "image", image, 0, NULL, NULL );
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mlt_properties_set_int( MLT_FRAME_PROPERTIES( this ), "width", width );
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mlt_properties_set_int( MLT_FRAME_PROPERTIES( this ), "height", height );
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mlt_properties_set_int( MLT_FRAME_PROPERTIES( this ), "format", format );
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this->get_alpha_mask = NULL;
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}
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/** Get the image associated to the frame.
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*/
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int mlt_frame_get_image( mlt_frame this, uint8_t **buffer, mlt_image_format *format, int *width, int *height, int writable )
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{
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mlt_properties properties = MLT_FRAME_PROPERTIES( this );
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mlt_get_image get_image = mlt_frame_pop_get_image( this );
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mlt_producer producer = mlt_properties_get_data( properties, "test_card_producer", NULL );
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int error = 0;
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if ( get_image != NULL )
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{
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mlt_properties_set_int( properties, "image_count", mlt_properties_get_int( properties, "image_count" ) - 1 );
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mlt_position position = mlt_frame_get_position( this );
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error = get_image( this, buffer, format, width, height, writable );
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mlt_properties_set_int( properties, "width", *width );
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mlt_properties_set_int( properties, "height", *height );
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mlt_properties_set_int( properties, "format", *format );
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mlt_frame_set_position( this, position );
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}
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else if ( mlt_properties_get_data( properties, "image", NULL ) != NULL )
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{
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*format = mlt_properties_get_int( properties, "format" );
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*buffer = mlt_properties_get_data( properties, "image", NULL );
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*width = mlt_properties_get_int( properties, "width" );
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*height = mlt_properties_get_int( properties, "height" );
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}
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else if ( producer != NULL )
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{
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mlt_frame test_frame = NULL;
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mlt_service_get_frame( MLT_PRODUCER_SERVICE( producer ), &test_frame, 0 );
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if ( test_frame != NULL )
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{
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mlt_properties test_properties = MLT_FRAME_PROPERTIES( test_frame );
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mlt_properties_set_double( test_properties, "consumer_aspect_ratio", mlt_properties_get_double( properties, "consumer_aspect_ratio" ) );
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mlt_properties_set( test_properties, "rescale.interp", mlt_properties_get( properties, "rescale.interp" ) );
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mlt_frame_get_image( test_frame, buffer, format, width, height, writable );
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mlt_properties_set_data( properties, "test_card_frame", test_frame, 0, ( mlt_destructor )mlt_frame_close, NULL );
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mlt_properties_set_data( properties, "image", *buffer, *width * *height * 2, NULL, NULL );
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mlt_properties_set_int( properties, "width", *width );
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mlt_properties_set_int( properties, "height", *height );
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mlt_properties_set_int( properties, "format", *format );
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mlt_properties_set_double( properties, "aspect_ratio", mlt_frame_get_aspect_ratio( test_frame ) );
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}
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else
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{
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mlt_properties_set_data( properties, "test_card_producer", NULL, 0, NULL, NULL );
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mlt_frame_get_image( this, buffer, format, width, height, writable );
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}
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}
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else
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{
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register uint8_t *p;
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register uint8_t *q;
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int size = 0;
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*width = *width == 0 ? 720 : *width;
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*height = *height == 0 ? 576 : *height;
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size = *width * *height;
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mlt_properties_set_int( properties, "format", *format );
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mlt_properties_set_int( properties, "width", *width );
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mlt_properties_set_int( properties, "height", *height );
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mlt_properties_set_int( properties, "aspect_ratio", 0 );
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switch( *format )
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{
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case mlt_image_none:
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size = 0;
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*buffer = NULL;
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break;
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case mlt_image_rgb24:
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size *= 3;
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size += *width * 3;
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*buffer = mlt_pool_alloc( size );
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if ( *buffer )
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memset( *buffer, 255, size );
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break;
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case mlt_image_rgb24a:
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case mlt_image_opengl:
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size *= 4;
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size += *width * 4;
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*buffer = mlt_pool_alloc( size );
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if ( *buffer )
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memset( *buffer, 255, size );
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break;
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case mlt_image_yuv422:
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size *= 2;
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size += *width * 2;
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*buffer = mlt_pool_alloc( size );
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p = *buffer;
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q = p + size;
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while ( p != NULL && p != q )
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{
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*p ++ = 235;
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*p ++ = 128;
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}
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break;
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case mlt_image_yuv420p:
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size = size * 3 / 2;
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*buffer = mlt_pool_alloc( size );
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if ( *buffer )
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memset( *buffer, 255, size );
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break;
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}
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mlt_properties_set_data( properties, "image", *buffer, size, ( mlt_destructor )mlt_pool_release, NULL );
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mlt_properties_set_int( properties, "test_image", 1 );
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}
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mlt_properties_set_int( properties, "scaled_width", *width );
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mlt_properties_set_int( properties, "scaled_height", *height );
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return error;
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}
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uint8_t *mlt_frame_get_alpha_mask( mlt_frame this )
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{
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uint8_t *alpha = NULL;
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if ( this != NULL )
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{
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if ( this->get_alpha_mask != NULL )
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alpha = this->get_alpha_mask( this );
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if ( alpha == NULL )
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alpha = mlt_properties_get_data( &this->parent, "alpha", NULL );
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if ( alpha == NULL )
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{
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int size = mlt_properties_get_int( &this->parent, "scaled_width" ) * mlt_properties_get_int( &this->parent, "scaled_height" );
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alpha = mlt_pool_alloc( size );
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memset( alpha, 255, size );
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mlt_properties_set_data( &this->parent, "alpha", alpha, size, mlt_pool_release, NULL );
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}
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}
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return alpha;
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}
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int mlt_frame_get_audio( mlt_frame this, int16_t **buffer, mlt_audio_format *format, int *frequency, int *channels, int *samples )
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{
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mlt_get_audio get_audio = mlt_frame_pop_audio( this );
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mlt_properties properties = MLT_FRAME_PROPERTIES( this );
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int hide = mlt_properties_get_int( properties, "test_audio" );
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if ( hide == 0 && get_audio != NULL )
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{
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mlt_position position = mlt_frame_get_position( this );
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get_audio( this, buffer, format, frequency, channels, samples );
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mlt_frame_set_position( this, position );
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}
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else if ( mlt_properties_get_data( properties, "audio", NULL ) )
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{
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*buffer = mlt_properties_get_data( properties, "audio", NULL );
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*frequency = mlt_properties_get_int( properties, "audio_frequency" );
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*channels = mlt_properties_get_int( properties, "audio_channels" );
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*samples = mlt_properties_get_int( properties, "audio_samples" );
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}
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else
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{
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int size = 0;
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*samples = *samples <= 0 ? 1920 : *samples;
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*channels = *channels <= 0 ? 2 : *channels;
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*frequency = *frequency <= 0 ? 48000 : *frequency;
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size = *samples * *channels * sizeof( int16_t );
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*buffer = mlt_pool_alloc( size );
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if ( *buffer != NULL )
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memset( *buffer, 0, size );
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mlt_properties_set_data( properties, "audio", *buffer, size, ( mlt_destructor )mlt_pool_release, NULL );
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mlt_properties_set_int( properties, "test_audio", 1 );
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}
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mlt_properties_set_int( properties, "audio_frequency", *frequency );
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mlt_properties_set_int( properties, "audio_channels", *channels );
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mlt_properties_set_int( properties, "audio_samples", *samples );
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if ( mlt_properties_get( properties, "meta.volume" ) )
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{
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double value = mlt_properties_get_double( properties, "meta.volume" );
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if ( value == 0.0 )
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{
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memset( *buffer, 0, *samples * *channels * 2 );
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}
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else if ( value != 1.0 )
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{
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int total = *samples * *channels;
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int16_t *p = *buffer;
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while ( total -- )
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{
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*p = *p * value;
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p ++;
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}
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}
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mlt_properties_set( properties, "meta.volume", NULL );
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}
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return 0;
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}
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unsigned char *mlt_frame_get_waveform( mlt_frame this, int w, int h )
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{
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int16_t *pcm = NULL;
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mlt_properties properties = MLT_FRAME_PROPERTIES( this );
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mlt_audio_format format = mlt_audio_pcm;
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int frequency = 32000; // lower frequency available?
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int channels = 2;
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double fps = mlt_profile_fps( NULL );
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int samples = mlt_sample_calculator( fps, frequency, mlt_frame_get_position( this ) );
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// Get the pcm data
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mlt_frame_get_audio( this, &pcm, &format, &frequency, &channels, &samples );
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// Make an 8-bit buffer large enough to hold rendering
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int size = w * h;
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unsigned char *bitmap = ( unsigned char* )mlt_pool_alloc( size );
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if ( bitmap != NULL )
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memset( bitmap, 0, size );
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mlt_properties_set_data( properties, "waveform", bitmap, size, ( mlt_destructor )mlt_pool_release, NULL );
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// Render vertical lines
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int16_t *ubound = pcm + samples * channels;
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int skip = samples / w - 1;
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int i, j, k;
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// Iterate sample stream and along x coordinate
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for ( i = 0; i < w && pcm < ubound; i++ )
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{
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// pcm data has channels interleaved
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for ( j = 0; j < channels; j++ )
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{
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// Determine sample's magnitude from 2s complement;
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int pcm_magnitude = *pcm < 0 ? ~(*pcm) + 1 : *pcm;
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// The height of a line is the ratio of the magnitude multiplied by
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// half the vertical resolution
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int height = ( int )( ( double )( pcm_magnitude ) / 32768 * h / 2 );
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// Determine the starting y coordinate - left channel above center,
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// right channel below - currently assumes 2 channels
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int displacement = ( h / 2 ) - ( 1 - j ) * height;
|
|
// Position buffer pointer using y coordinate, stride, and x coordinate
|
|
unsigned char *p = &bitmap[ i + displacement * w ];
|
|
|
|
// Draw vertical line
|
|
for ( k = 0; k < height; k++ )
|
|
p[ w * k ] = 0xFF;
|
|
|
|
pcm++;
|
|
}
|
|
pcm += skip * channels;
|
|
}
|
|
|
|
return bitmap;
|
|
}
|
|
|
|
mlt_producer mlt_frame_get_original_producer( mlt_frame this )
|
|
{
|
|
if ( this != NULL )
|
|
return mlt_properties_get_data( MLT_FRAME_PROPERTIES( this ), "_producer", NULL );
|
|
return NULL;
|
|
}
|
|
|
|
void mlt_frame_close( mlt_frame this )
|
|
{
|
|
if ( this != NULL && mlt_properties_dec_ref( MLT_FRAME_PROPERTIES( this ) ) <= 0 )
|
|
{
|
|
mlt_deque_close( this->stack_image );
|
|
mlt_deque_close( this->stack_audio );
|
|
while( mlt_deque_peek_back( this->stack_service ) )
|
|
mlt_service_close( mlt_deque_pop_back( this->stack_service ) );
|
|
mlt_deque_close( this->stack_service );
|
|
mlt_properties_close( &this->parent );
|
|
free( this );
|
|
}
|
|
}
|
|
|
|
/***** convenience functions *****/
|
|
|
|
int mlt_convert_yuv422_to_rgb24a( uint8_t *yuv, uint8_t *rgba, unsigned int total )
|
|
{
|
|
int ret = 0;
|
|
int yy, uu, vv;
|
|
int r,g,b;
|
|
total /= 2;
|
|
while (total--)
|
|
{
|
|
yy = yuv[0];
|
|
uu = yuv[1];
|
|
vv = yuv[3];
|
|
YUV2RGB(yy, uu, vv, r, g, b);
|
|
rgba[0] = r;
|
|
rgba[1] = g;
|
|
rgba[2] = b;
|
|
rgba[3] = 255;
|
|
yy = yuv[2];
|
|
YUV2RGB(yy, uu, vv, r, g, b);
|
|
rgba[4] = r;
|
|
rgba[5] = g;
|
|
rgba[6] = b;
|
|
rgba[7] = 255;
|
|
yuv += 4;
|
|
rgba += 8;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
int mlt_convert_rgb24a_to_yuv422( uint8_t *rgba, int width, int height, int stride, uint8_t *yuv, uint8_t *alpha )
|
|
{
|
|
int ret = 0;
|
|
register int y0, y1, u0, u1, v0, v1;
|
|
register int r, g, b;
|
|
register uint8_t *d = yuv;
|
|
register int i, j;
|
|
|
|
if ( alpha )
|
|
for ( i = 0; i < height; i++ )
|
|
{
|
|
register uint8_t *s = rgba + ( stride * i );
|
|
for ( j = 0; j < ( width / 2 ); j++ )
|
|
{
|
|
r = *s++;
|
|
g = *s++;
|
|
b = *s++;
|
|
*alpha++ = *s++;
|
|
RGB2YUV (r, g, b, y0, u0 , v0);
|
|
r = *s++;
|
|
g = *s++;
|
|
b = *s++;
|
|
*alpha++ = *s++;
|
|
RGB2YUV (r, g, b, y1, u1 , v1);
|
|
*d++ = y0;
|
|
*d++ = (u0+u1) >> 1;
|
|
*d++ = y1;
|
|
*d++ = (v0+v1) >> 1;
|
|
}
|
|
if ( width % 2 )
|
|
{
|
|
r = *s++;
|
|
g = *s++;
|
|
b = *s++;
|
|
*alpha++ = *s++;
|
|
RGB2YUV (r, g, b, y0, u0 , v0);
|
|
*d++ = y0;
|
|
*d++ = u0;
|
|
}
|
|
}
|
|
else
|
|
for ( i = 0; i < height; i++ )
|
|
{
|
|
register uint8_t *s = rgba + ( stride * i );
|
|
for ( j = 0; j < ( width / 2 ); j++ )
|
|
{
|
|
r = *s++;
|
|
g = *s++;
|
|
b = *s++;
|
|
s++;
|
|
RGB2YUV (r, g, b, y0, u0 , v0);
|
|
r = *s++;
|
|
g = *s++;
|
|
b = *s++;
|
|
s++;
|
|
RGB2YUV (r, g, b, y1, u1 , v1);
|
|
*d++ = y0;
|
|
*d++ = (u0+u1) >> 1;
|
|
*d++ = y1;
|
|
*d++ = (v0+v1) >> 1;
|
|
}
|
|
if ( width % 2 )
|
|
{
|
|
r = *s++;
|
|
g = *s++;
|
|
b = *s++;
|
|
s++;
|
|
RGB2YUV (r, g, b, y0, u0 , v0);
|
|
*d++ = y0;
|
|
*d++ = u0;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
int mlt_convert_rgb24_to_yuv422( uint8_t *rgb, int width, int height, int stride, uint8_t *yuv )
|
|
{
|
|
int ret = 0;
|
|
register int y0, y1, u0, u1, v0, v1;
|
|
register int r, g, b;
|
|
register uint8_t *d = yuv;
|
|
register int i, j;
|
|
|
|
for ( i = 0; i < height; i++ )
|
|
{
|
|
register uint8_t *s = rgb + ( stride * i );
|
|
for ( j = 0; j < ( width / 2 ); j++ )
|
|
{
|
|
r = *s++;
|
|
g = *s++;
|
|
b = *s++;
|
|
RGB2YUV (r, g, b, y0, u0 , v0);
|
|
r = *s++;
|
|
g = *s++;
|
|
b = *s++;
|
|
RGB2YUV (r, g, b, y1, u1 , v1);
|
|
*d++ = y0;
|
|
*d++ = (u0+u1) >> 1;
|
|
*d++ = y1;
|
|
*d++ = (v0+v1) >> 1;
|
|
}
|
|
if ( width % 2 )
|
|
{
|
|
r = *s++;
|
|
g = *s++;
|
|
b = *s++;
|
|
RGB2YUV (r, g, b, y0, u0 , v0);
|
|
*d++ = y0;
|
|
*d++ = u0;
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
int mlt_convert_bgr24a_to_yuv422( uint8_t *rgba, int width, int height, int stride, uint8_t *yuv, uint8_t *alpha )
|
|
{
|
|
int ret = 0;
|
|
register int y0, y1, u0, u1, v0, v1;
|
|
register int r, g, b;
|
|
register uint8_t *d = yuv;
|
|
register int i, j;
|
|
|
|
if ( alpha )
|
|
for ( i = 0; i < height; i++ )
|
|
{
|
|
register uint8_t *s = rgba + ( stride * i );
|
|
for ( j = 0; j < ( width / 2 ); j++ )
|
|
{
|
|
b = *s++;
|
|
g = *s++;
|
|
r = *s++;
|
|
*alpha++ = *s++;
|
|
RGB2YUV (r, g, b, y0, u0 , v0);
|
|
b = *s++;
|
|
g = *s++;
|
|
r = *s++;
|
|
*alpha++ = *s++;
|
|
RGB2YUV (r, g, b, y1, u1 , v1);
|
|
*d++ = y0;
|
|
*d++ = (u0+u1) >> 1;
|
|
*d++ = y1;
|
|
*d++ = (v0+v1) >> 1;
|
|
}
|
|
if ( width % 2 )
|
|
{
|
|
b = *s++;
|
|
g = *s++;
|
|
r = *s++;
|
|
*alpha++ = *s++;
|
|
RGB2YUV (r, g, b, y0, u0 , v0);
|
|
*d++ = y0;
|
|
*d++ = u0;
|
|
}
|
|
}
|
|
else
|
|
for ( i = 0; i < height; i++ )
|
|
{
|
|
register uint8_t *s = rgba + ( stride * i );
|
|
for ( j = 0; j < ( width / 2 ); j++ )
|
|
{
|
|
b = *s++;
|
|
g = *s++;
|
|
r = *s++;
|
|
s++;
|
|
RGB2YUV (r, g, b, y0, u0 , v0);
|
|
b = *s++;
|
|
g = *s++;
|
|
r = *s++;
|
|
s++;
|
|
RGB2YUV (r, g, b, y1, u1 , v1);
|
|
*d++ = y0;
|
|
*d++ = (u0+u1) >> 1;
|
|
*d++ = y1;
|
|
*d++ = (v0+v1) >> 1;
|
|
}
|
|
if ( width % 2 )
|
|
{
|
|
b = *s++;
|
|
g = *s++;
|
|
r = *s++;
|
|
s++;
|
|
RGB2YUV (r, g, b, y0, u0 , v0);
|
|
*d++ = y0;
|
|
*d++ = u0;
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
int mlt_convert_bgr24_to_yuv422( uint8_t *rgb, int width, int height, int stride, uint8_t *yuv )
|
|
{
|
|
int ret = 0;
|
|
register int y0, y1, u0, u1, v0, v1;
|
|
register int r, g, b;
|
|
register uint8_t *d = yuv;
|
|
register int i, j;
|
|
|
|
for ( i = 0; i < height; i++ )
|
|
{
|
|
register uint8_t *s = rgb + ( stride * i );
|
|
for ( j = 0; j < ( width / 2 ); j++ )
|
|
{
|
|
b = *s++;
|
|
g = *s++;
|
|
r = *s++;
|
|
RGB2YUV (r, g, b, y0, u0 , v0);
|
|
b = *s++;
|
|
g = *s++;
|
|
r = *s++;
|
|
RGB2YUV (r, g, b, y1, u1 , v1);
|
|
*d++ = y0;
|
|
*d++ = (u0+u1) >> 1;
|
|
*d++ = y1;
|
|
*d++ = (v0+v1) >> 1;
|
|
}
|
|
if ( width % 2 )
|
|
{
|
|
b = *s++;
|
|
g = *s++;
|
|
r = *s++;
|
|
RGB2YUV (r, g, b, y0, u0 , v0);
|
|
*d++ = y0;
|
|
*d++ = u0;
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
int mlt_convert_argb_to_yuv422( uint8_t *rgba, int width, int height, int stride, uint8_t *yuv, uint8_t *alpha )
|
|
{
|
|
int ret = 0;
|
|
register int y0, y1, u0, u1, v0, v1;
|
|
register int r, g, b;
|
|
register uint8_t *d = yuv;
|
|
register int i, j;
|
|
|
|
if ( alpha )
|
|
for ( i = 0; i < height; i++ )
|
|
{
|
|
register uint8_t *s = rgba + ( stride * i );
|
|
for ( j = 0; j < ( width / 2 ); j++ )
|
|
{
|
|
*alpha++ = *s++;
|
|
r = *s++;
|
|
g = *s++;
|
|
b = *s++;
|
|
RGB2YUV (r, g, b, y0, u0 , v0);
|
|
*alpha++ = *s++;
|
|
r = *s++;
|
|
g = *s++;
|
|
b = *s++;
|
|
RGB2YUV (r, g, b, y1, u1 , v1);
|
|
*d++ = y0;
|
|
*d++ = (u0+u1) >> 1;
|
|
*d++ = y1;
|
|
*d++ = (v0+v1) >> 1;
|
|
}
|
|
if ( width % 2 )
|
|
{
|
|
*alpha++ = *s++;
|
|
r = *s++;
|
|
g = *s++;
|
|
b = *s++;
|
|
RGB2YUV (r, g, b, y0, u0 , v0);
|
|
*d++ = y0;
|
|
*d++ = u0;
|
|
}
|
|
}
|
|
else
|
|
for ( i = 0; i < height; i++ )
|
|
{
|
|
register uint8_t *s = rgba + ( stride * i );
|
|
for ( j = 0; j < ( width / 2 ); j++ )
|
|
{
|
|
s++;
|
|
r = *s++;
|
|
g = *s++;
|
|
b = *s++;
|
|
RGB2YUV (r, g, b, y0, u0 , v0);
|
|
s++;
|
|
r = *s++;
|
|
g = *s++;
|
|
b = *s++;
|
|
RGB2YUV (r, g, b, y1, u1 , v1);
|
|
*d++ = y0;
|
|
*d++ = (u0+u1) >> 1;
|
|
*d++ = y1;
|
|
*d++ = (v0+v1) >> 1;
|
|
}
|
|
if ( width % 2 )
|
|
{
|
|
s++;
|
|
r = *s++;
|
|
g = *s++;
|
|
b = *s++;
|
|
RGB2YUV (r, g, b, y0, u0 , v0);
|
|
*d++ = y0;
|
|
*d++ = u0;
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
int mlt_convert_yuv420p_to_yuv422( uint8_t *yuv420p, int width, int height, int stride, uint8_t *yuv )
|
|
{
|
|
int ret = 0;
|
|
register int i, j;
|
|
|
|
int half = width >> 1;
|
|
|
|
uint8_t *Y = yuv420p;
|
|
uint8_t *U = Y + width * height;
|
|
uint8_t *V = U + width * height / 4;
|
|
|
|
register uint8_t *d = yuv;
|
|
|
|
for ( i = 0; i < height; i++ )
|
|
{
|
|
register uint8_t *u = U + ( i / 2 ) * ( half );
|
|
register uint8_t *v = V + ( i / 2 ) * ( half );
|
|
|
|
for ( j = 0; j < half; j++ )
|
|
{
|
|
*d ++ = *Y ++;
|
|
*d ++ = *u ++;
|
|
*d ++ = *Y ++;
|
|
*d ++ = *v ++;
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
uint8_t *mlt_resize_alpha( uint8_t *input, int owidth, int oheight, int iwidth, int iheight, uint8_t alpha_value )
|
|
{
|
|
uint8_t *output = NULL;
|
|
|
|
if ( input != NULL && ( iwidth != owidth || iheight != oheight ) && ( owidth > 6 && oheight > 6 ) )
|
|
{
|
|
uint8_t *out_line;
|
|
int offset_x = ( owidth - iwidth ) / 2;
|
|
int offset_y = ( oheight - iheight ) / 2;
|
|
int iused = iwidth;
|
|
|
|
output = mlt_pool_alloc( owidth * oheight );
|
|
memset( output, alpha_value, owidth * oheight );
|
|
|
|
offset_x -= offset_x % 2;
|
|
|
|
out_line = output + offset_y * owidth;
|
|
out_line += offset_x;
|
|
|
|
// Loop for the entirety of our output height.
|
|
while ( iheight -- )
|
|
{
|
|
// We're in the input range for this row.
|
|
memcpy( out_line, input, iused );
|
|
|
|
// Move to next input line
|
|
input += iwidth;
|
|
|
|
// Move to next output line
|
|
out_line += owidth;
|
|
}
|
|
}
|
|
|
|
return output;
|
|
}
|
|
|
|
void mlt_resize_yuv422( uint8_t *output, int owidth, int oheight, uint8_t *input, int iwidth, int iheight )
|
|
{
|
|
// Calculate strides
|
|
int istride = iwidth * 2;
|
|
int ostride = owidth * 2;
|
|
int offset_x = ( owidth - iwidth );
|
|
int offset_y = ( oheight - iheight ) / 2;
|
|
uint8_t *in_line = input;
|
|
uint8_t *out_line;
|
|
int size = owidth * oheight;
|
|
uint8_t *p = output;
|
|
|
|
// Optimisation point
|
|
if ( output == NULL || input == NULL || ( owidth <= 6 || oheight <= 6 || iwidth <= 6 || oheight <= 6 ) )
|
|
{
|
|
return;
|
|
}
|
|
else if ( iwidth == owidth && iheight == oheight )
|
|
{
|
|
memcpy( output, input, iheight * istride );
|
|
return;
|
|
}
|
|
|
|
while( size -- )
|
|
{
|
|
*p ++ = 16;
|
|
*p ++ = 128;
|
|
}
|
|
|
|
offset_x -= offset_x % 4;
|
|
|
|
out_line = output + offset_y * ostride;
|
|
out_line += offset_x;
|
|
|
|
// Loop for the entirety of our output height.
|
|
while ( iheight -- )
|
|
{
|
|
// We're in the input range for this row.
|
|
memcpy( out_line, in_line, iwidth * 2 );
|
|
|
|
// Move to next input line
|
|
in_line += istride;
|
|
|
|
// Move to next output line
|
|
out_line += ostride;
|
|
}
|
|
}
|
|
|
|
/** A resizing function for yuv422 frames - this does not rescale, but simply
|
|
resizes. It assumes yuv422 images available on the frame so use with care.
|
|
*/
|
|
|
|
uint8_t *mlt_frame_resize_yuv422( mlt_frame this, int owidth, int oheight )
|
|
{
|
|
// Get properties
|
|
mlt_properties properties = MLT_FRAME_PROPERTIES( this );
|
|
|
|
// Get the input image, width and height
|
|
uint8_t *input = mlt_properties_get_data( properties, "image", NULL );
|
|
uint8_t *alpha = mlt_frame_get_alpha_mask( this );
|
|
|
|
int iwidth = mlt_properties_get_int( properties, "width" );
|
|
int iheight = mlt_properties_get_int( properties, "height" );
|
|
|
|
// If width and height are correct, don't do anything
|
|
if ( iwidth != owidth || iheight != oheight )
|
|
{
|
|
uint8_t alpha_value = mlt_properties_get_int( properties, "resize_alpha" );
|
|
|
|
// Create the output image
|
|
uint8_t *output = mlt_pool_alloc( owidth * ( oheight + 1 ) * 2 );
|
|
|
|
// Call the generic resize
|
|
mlt_resize_yuv422( output, owidth, oheight, input, iwidth, iheight );
|
|
|
|
// Now update the frame
|
|
mlt_properties_set_data( properties, "image", output, owidth * ( oheight + 1 ) * 2, ( mlt_destructor )mlt_pool_release, NULL );
|
|
mlt_properties_set_int( properties, "width", owidth );
|
|
mlt_properties_set_int( properties, "height", oheight );
|
|
|
|
// We should resize the alpha too
|
|
alpha = mlt_resize_alpha( alpha, owidth, oheight, iwidth, iheight, alpha_value );
|
|
if ( alpha != NULL )
|
|
{
|
|
mlt_properties_set_data( properties, "alpha", alpha, owidth * oheight, ( mlt_destructor )mlt_pool_release, NULL );
|
|
this->get_alpha_mask = NULL;
|
|
}
|
|
|
|
// Return the output
|
|
return output;
|
|
}
|
|
// No change, return input
|
|
return input;
|
|
}
|
|
|
|
/** A rescaling function for yuv422 frames - low quality, and provided for testing
|
|
only. It assumes yuv422 images available on the frame so use with care.
|
|
*/
|
|
|
|
uint8_t *mlt_frame_rescale_yuv422( mlt_frame this, int owidth, int oheight )
|
|
{
|
|
// Get properties
|
|
mlt_properties properties = MLT_FRAME_PROPERTIES( this );
|
|
|
|
// Get the input image, width and height
|
|
uint8_t *input = mlt_properties_get_data( properties, "image", NULL );
|
|
int iwidth = mlt_properties_get_int( properties, "width" );
|
|
int iheight = mlt_properties_get_int( properties, "height" );
|
|
|
|
// If width and height are correct, don't do anything
|
|
if ( iwidth != owidth || iheight != oheight )
|
|
{
|
|
// Create the output image
|
|
uint8_t *output = mlt_pool_alloc( owidth * ( oheight + 1 ) * 2 );
|
|
|
|
// Calculate strides
|
|
int istride = iwidth * 2;
|
|
int ostride = owidth * 2;
|
|
|
|
iwidth = iwidth - ( iwidth % 4 );
|
|
|
|
// Derived coordinates
|
|
int dy, dx;
|
|
|
|
// Calculate ranges
|
|
int out_x_range = owidth / 2;
|
|
int out_y_range = oheight / 2;
|
|
int in_x_range = iwidth / 2;
|
|
int in_y_range = iheight / 2;
|
|
|
|
// Output pointers
|
|
register uint8_t *out_line = output;
|
|
register uint8_t *out_ptr;
|
|
|
|
// Calculate a middle pointer
|
|
uint8_t *in_middle = input + istride * in_y_range + in_x_range * 2;
|
|
uint8_t *in_line;
|
|
|
|
// Generate the affine transform scaling values
|
|
register int scale_width = ( iwidth << 16 ) / owidth;
|
|
register int scale_height = ( iheight << 16 ) / oheight;
|
|
register int base = 0;
|
|
|
|
int outer = out_x_range * scale_width;
|
|
int bottom = out_y_range * scale_height;
|
|
|
|
// Loop for the entirety of our output height.
|
|
for ( dy = - bottom; dy < bottom; dy += scale_height )
|
|
{
|
|
// Start at the beginning of the line
|
|
out_ptr = out_line;
|
|
|
|
// Pointer to the middle of the input line
|
|
in_line = in_middle + ( dy >> 16 ) * istride;
|
|
|
|
// Loop for the entirety of our output row.
|
|
for ( dx = - outer; dx < outer; dx += scale_width )
|
|
{
|
|
base = dx >> 15;
|
|
base &= 0xfffffffe;
|
|
*out_ptr ++ = *( in_line + base );
|
|
base &= 0xfffffffc;
|
|
*out_ptr ++ = *( in_line + base + 1 );
|
|
dx += scale_width;
|
|
base = dx >> 15;
|
|
base &= 0xfffffffe;
|
|
*out_ptr ++ = *( in_line + base );
|
|
base &= 0xfffffffc;
|
|
*out_ptr ++ = *( in_line + base + 3 );
|
|
}
|
|
|
|
// Move to next output line
|
|
out_line += ostride;
|
|
}
|
|
|
|
// Now update the frame
|
|
mlt_properties_set_data( properties, "image", output, owidth * ( oheight + 1 ) * 2, ( mlt_destructor )mlt_pool_release, NULL );
|
|
mlt_properties_set_int( properties, "width", owidth );
|
|
mlt_properties_set_int( properties, "height", oheight );
|
|
|
|
// Return the output
|
|
return output;
|
|
}
|
|
|
|
// No change, return input
|
|
return input;
|
|
}
|
|
|
|
int mlt_frame_mix_audio( mlt_frame this, mlt_frame that, float weight_start, float weight_end, int16_t **buffer, mlt_audio_format *format, int *frequency, int *channels, int *samples )
|
|
{
|
|
int ret = 0;
|
|
int16_t *src, *dest;
|
|
int frequency_src = *frequency, frequency_dest = *frequency;
|
|
int channels_src = *channels, channels_dest = *channels;
|
|
int samples_src = *samples, samples_dest = *samples;
|
|
int i, j;
|
|
double d = 0, s = 0;
|
|
|
|
mlt_frame_get_audio( that, &src, format, &frequency_src, &channels_src, &samples_src );
|
|
mlt_frame_get_audio( this, &dest, format, &frequency_dest, &channels_dest, &samples_dest );
|
|
|
|
int silent = mlt_properties_get_int( MLT_FRAME_PROPERTIES( this ), "silent_audio" );
|
|
mlt_properties_set_int( MLT_FRAME_PROPERTIES( this ), "silent_audio", 0 );
|
|
if ( silent )
|
|
memset( dest, 0, samples_dest * channels_dest * sizeof( int16_t ) );
|
|
|
|
silent = mlt_properties_get_int( MLT_FRAME_PROPERTIES( that ), "silent_audio" );
|
|
mlt_properties_set_int( MLT_FRAME_PROPERTIES( that ), "silent_audio", 0 );
|
|
if ( silent )
|
|
memset( src, 0, samples_src * channels_src * sizeof( int16_t ) );
|
|
|
|
if ( channels_src > 6 )
|
|
channels_src = 0;
|
|
if ( channels_dest > 6 )
|
|
channels_dest = 0;
|
|
if ( samples_src > 4000 )
|
|
samples_src = 0;
|
|
if ( samples_dest > 4000 )
|
|
samples_dest = 0;
|
|
|
|
// determine number of samples to process
|
|
*samples = samples_src < samples_dest ? samples_src : samples_dest;
|
|
*channels = channels_src < channels_dest ? channels_src : channels_dest;
|
|
*buffer = dest;
|
|
*frequency = frequency_dest;
|
|
|
|
// Compute a smooth ramp over start to end
|
|
float weight = weight_start;
|
|
float weight_step = ( weight_end - weight_start ) / *samples;
|
|
|
|
if ( src == dest )
|
|
{
|
|
*samples = samples_src;
|
|
*channels = channels_src;
|
|
*buffer = src;
|
|
*frequency = frequency_src;
|
|
return ret;
|
|
}
|
|
|
|
// Mixdown
|
|
for ( i = 0; i < *samples; i++ )
|
|
{
|
|
for ( j = 0; j < *channels; j++ )
|
|
{
|
|
if ( j < channels_dest )
|
|
d = (double) dest[ i * channels_dest + j ];
|
|
if ( j < channels_src )
|
|
s = (double) src[ i * channels_src + j ];
|
|
dest[ i * channels_dest + j ] = s * weight + d * ( 1.0 - weight );
|
|
}
|
|
weight += weight_step;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
// Replacement for broken mlt_frame_audio_mix - this filter uses an inline low pass filter
|
|
// to allow mixing without volume hacking
|
|
int mlt_frame_combine_audio( mlt_frame this, mlt_frame that, int16_t **buffer, mlt_audio_format *format, int *frequency, int *channels, int *samples )
|
|
{
|
|
int ret = 0;
|
|
int16_t *src, *dest;
|
|
int frequency_src = *frequency, frequency_dest = *frequency;
|
|
int channels_src = *channels, channels_dest = *channels;
|
|
int samples_src = *samples, samples_dest = *samples;
|
|
int i, j;
|
|
double vp[ 6 ];
|
|
double b_weight = 1.0;
|
|
|
|
if ( mlt_properties_get_int( MLT_FRAME_PROPERTIES( this ), "meta.mixdown" ) )
|
|
b_weight = 1.0 - mlt_properties_get_double( MLT_FRAME_PROPERTIES( this ), "meta.volume" );
|
|
|
|
mlt_frame_get_audio( that, &src, format, &frequency_src, &channels_src, &samples_src );
|
|
mlt_frame_get_audio( this, &dest, format, &frequency_dest, &channels_dest, &samples_dest );
|
|
|
|
int silent = mlt_properties_get_int( MLT_FRAME_PROPERTIES( this ), "silent_audio" );
|
|
mlt_properties_set_int( MLT_FRAME_PROPERTIES( this ), "silent_audio", 0 );
|
|
if ( silent )
|
|
memset( dest, 0, samples_dest * channels_dest * sizeof( int16_t ) );
|
|
|
|
silent = mlt_properties_get_int( MLT_FRAME_PROPERTIES( that ), "silent_audio" );
|
|
mlt_properties_set_int( MLT_FRAME_PROPERTIES( that ), "silent_audio", 0 );
|
|
if ( silent )
|
|
memset( src, 0, samples_src * channels_src * sizeof( int16_t ) );
|
|
|
|
if ( src == dest )
|
|
{
|
|
*samples = samples_src;
|
|
*channels = channels_src;
|
|
*buffer = src;
|
|
*frequency = frequency_src;
|
|
return ret;
|
|
}
|
|
|
|
// determine number of samples to process
|
|
*samples = samples_src < samples_dest ? samples_src : samples_dest;
|
|
*channels = channels_src < channels_dest ? channels_src : channels_dest;
|
|
*buffer = dest;
|
|
*frequency = frequency_dest;
|
|
|
|
for ( j = 0; j < *channels; j++ )
|
|
vp[ j ] = ( double )dest[ j ];
|
|
|
|
double Fc = 0.5;
|
|
double B = exp(-2.0 * M_PI * Fc);
|
|
double A = 1.0 - B;
|
|
double v;
|
|
|
|
for ( i = 0; i < *samples; i++ )
|
|
{
|
|
for ( j = 0; j < *channels; j++ )
|
|
{
|
|
v = ( double )( b_weight * dest[ i * channels_dest + j ] + src[ i * channels_src + j ] );
|
|
v = v < -32767 ? -32767 : v > 32768 ? 32768 : v;
|
|
vp[ j ] = dest[ i * channels_dest + j ] = ( int16_t )( v * A + vp[ j ] * B );
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* Will this break when mlt_position is converted to double? -Zach */
|
|
int mlt_sample_calculator( float fps, int frequency, int64_t position )
|
|
{
|
|
int samples = 0;
|
|
|
|
if ( ( int )( fps * 100 ) == 2997 )
|
|
{
|
|
samples = frequency / 30;
|
|
|
|
switch ( frequency )
|
|
{
|
|
case 48000:
|
|
if ( position % 5 != 0 )
|
|
samples += 2;
|
|
break;
|
|
case 44100:
|
|
if ( position % 300 == 0 )
|
|
samples = 1471;
|
|
else if ( position % 30 == 0 )
|
|
samples = 1470;
|
|
else if ( position % 2 == 0 )
|
|
samples = 1472;
|
|
else
|
|
samples = 1471;
|
|
break;
|
|
case 32000:
|
|
if ( position % 30 == 0 )
|
|
samples = 1068;
|
|
else if ( position % 29 == 0 )
|
|
samples = 1067;
|
|
else if ( position % 4 == 2 )
|
|
samples = 1067;
|
|
else
|
|
samples = 1068;
|
|
break;
|
|
default:
|
|
samples = 0;
|
|
}
|
|
}
|
|
else if ( fps != 0 )
|
|
{
|
|
samples = frequency / fps;
|
|
}
|
|
|
|
return samples;
|
|
}
|
|
|
|
int64_t mlt_sample_calculator_to_now( float fps, int frequency, int64_t frame )
|
|
{
|
|
int64_t samples = 0;
|
|
|
|
// TODO: Correct rules for NTSC and drop the * 100 hack
|
|
if ( ( int )( fps * 100 ) == 2997 )
|
|
{
|
|
samples = ( ( double )( frame * frequency ) / 30 );
|
|
switch( frequency )
|
|
{
|
|
case 48000:
|
|
samples += 2 * ( frame / 5 );
|
|
break;
|
|
case 44100:
|
|
samples += frame + ( frame / 2 ) - ( frame / 30 ) + ( frame / 300 );
|
|
break;
|
|
case 32000:
|
|
samples += ( 2 * frame ) - ( frame / 4 ) - ( frame / 29 );
|
|
break;
|
|
}
|
|
}
|
|
else if ( fps != 0 )
|
|
{
|
|
samples = ( ( frame * frequency ) / ( int )fps );
|
|
}
|
|
|
|
return samples;
|
|
}
|