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/*****************************************************************************
* vt_utils.h: videotoolbox/cvpx utility functions
*****************************************************************************
* Copyright (C) 2017 VLC authors, VideoLAN and VideoLabs
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
#ifndef VLC_CODEC_VTUTILS_H_
#define VLC_CODEC_VTUTILS_H_
#include <VideoToolbox/VideoToolbox.h>
#include <vlc_picture.h>
CFMutableDictionaryRef cfdict_create(CFIndex capacity);
void cfdict_set_int32(CFMutableDictionaryRef dict, CFStringRef key, int value);
/*
* Attach a cvpx buffer to a picture
*
* The cvpx ref will be released when the picture is released
* @return VLC_SUCCESS or VLC_ENOMEM
*/
int cvpxpic_attach(picture_t *p_pic, CVPixelBufferRef cvpx);
int cvpxpic_attach_with_cb(picture_t *p_pic, CVPixelBufferRef cvpx,
void (*on_released_cb)(CVPixelBufferRef, void *, unsigned nb_fields),
void *on_released_data);
/*
* Get the cvpx buffer attached to a picture
*/
CVPixelBufferRef cvpxpic_get_ref(picture_t *pic);
/*
* Create a picture mapped to a cvpx buffer
*
* @param fmt i_chroma must be VLC_CODEC_UYVY, VLC_CODEC_NV12 or VLC_CODEC_I420
* @param cvpx buffer to map
* @param readonly true to map read-only, false otherwise
* @return a valid picture, call picture_Release() or cvpxpic_unmap() to free
* the picture and unmap the cvpx buffer.
*/
picture_t *cvpxpic_create_mapped(const video_format_t *fmt,
CVPixelBufferRef cvpx, bool readonly);
/*
* Create a picture attached to an unmapped cvpx buffer
*
* @param mapped_pic must be a picture created with cvpxpic_create_mapped()
* @return a valid picture, the pic chroma will one of VLC_CODEC_CVPX_* chromas
*/
picture_t *cvpxpic_unmap(picture_t *mapped_pic);
/*
* Create a cvpx pool
*
* @param fmt i_chroma must be one of VLC_CODEC_CVPX_* chromas
* @param count number of pictures to alloc
* @return a valid cvpx pool or NULL, release it with CVPixelBufferPoolRelease()
*/
CVPixelBufferPoolRef cvpxpool_create(const video_format_t *fmt, unsigned count);
/*
* Get a cvpx buffer from a pool
*/
CVPixelBufferRef cvpxpool_new_cvpx(CVPixelBufferPoolRef pool);
#endif
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