242 lines
7.5 KiB
C
Executable File
242 lines
7.5 KiB
C
Executable File
/*
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* Copyright (c) 2018 Samsung Electronics Co., Ltd. All rights reserved.
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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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#ifndef _RLOTTIE_CAPI_H_
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#define _RLOTTIE_CAPI_H_
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#include <stddef.h>
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#include <stdint.h>
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#include <rlottiecommon.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct Lottie_Animation_S Lottie_Animation;
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/**
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* @brief Constructs an animation object from file path.
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*
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* @param[in] path Lottie resource file path
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*
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* @return Animation object that can build the contents of the
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* Lottie resource represented by file path.
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*
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* @see lottie_animation_destroy()
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*
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* @ingroup Lottie_Animation
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* @internal
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*/
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LOT_EXPORT Lottie_Animation *lottie_animation_from_file(const char *path);
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/**
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* @brief Constructs an animation object from JSON string data.
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*
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* @param[in] data The JSON string data.
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* @param[in] key the string that will be used to cache the JSON string data.
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* @param[in] resource_path the path that will be used to load external resource needed by the JSON data.
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*
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* @return Animation object that can build the contents of the
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* Lottie resource represented by JSON string data.
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*
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* @ingroup Lottie_Animation
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* @internal
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*/
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LOT_EXPORT Lottie_Animation *lottie_animation_from_data(const char *data, const char *key, const char *resource_path);
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/**
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* @brief Free given Animation object resource.
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*
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* @param[in] animation Animation object to free.
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*
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* @see lottie_animation_from_file()
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* @see lottie_animation_from_data()
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*
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* @ingroup Lottie_Animation
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* @internal
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*/
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LOT_EXPORT void lottie_animation_destroy(Lottie_Animation *animation);
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/**
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* @brief Returns default viewport size of the Lottie resource.
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*
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* @param[in] animation Animation object.
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* @param[out] w default width of the viewport.
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* @param[out] h default height of the viewport.
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*
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* @ingroup Lottie_Animation
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* @internal
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*/
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LOT_EXPORT void lottie_animation_get_size(const Lottie_Animation *animation, size_t *width, size_t *height);
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/**
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* @brief Returns total animation duration of Lottie resource in second.
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* it uses totalFrame() and frameRate() to calculate the duration.
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* duration = totalFrame() / frameRate().
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*
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* @param[in] animation Animation object.
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*
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* @return total animation duration in second.
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* @c 0 if the Lottie resource has no animation.
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*
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* @see lottie_animation_get_totalframe()
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* @see lottie_animation_get_framerate()
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*
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* @ingroup Lottie_Animation
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* @internal
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*/
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LOT_EXPORT double lottie_animation_get_duration(const Lottie_Animation *animation);
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/**
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* @brief Returns total number of frames present in the Lottie resource.
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*
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* @param[in] animation Animation object.
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*
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* @return frame count of the Lottie resource.*
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*
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* @note frame number starts with 0.
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*
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* @see lottie_animation_get_duration()
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* @see lottie_animation_get_framerate()
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*
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* @ingroup Lottie_Animation
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* @internal
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*/
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LOT_EXPORT size_t lottie_animation_get_totalframe(const Lottie_Animation *animation);
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/**
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* @brief Returns default framerate of the Lottie resource.
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*
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* @param[in] animation Animation object.
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*
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* @return framerate of the Lottie resource
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*
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* @ingroup Lottie_Animation
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* @internal
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*
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*/
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LOT_EXPORT double lottie_animation_get_framerate(const Lottie_Animation *animation);
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/**
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* @brief Get the render tree which contains the snapshot of the animation object
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* at frame = @c frame_num, the content of the animation in that frame number.
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*
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* @param[in] animation Animation object.
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* @param[in] frame_num Content corresponds to the @p frame_num needs to be drawn
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* @param[in] width requested snapshot viewport width.
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* @param[in] height requested snapshot viewport height.
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*
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* @return Animation snapshot tree.
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*
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* @note: User has to traverse the tree for rendering.
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*
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* @see LOTLayerNode
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* @see LOTNode
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*
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* @ingroup Lottie_Animation
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* @internal
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*/
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LOT_EXPORT const LOTLayerNode * lottie_animation_render_tree(Lottie_Animation *animation,
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size_t frame_num,
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size_t width, size_t height);
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/**
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* @brief Maps position to frame number and returns it.
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*
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* @param[in] animation Animation object.
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* @param[in] pos position in the range [ 0.0 .. 1.0 ].
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*
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* @return mapped frame numbe in the range [ start_frame .. end_frame ].
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* @c 0 if the Lottie resource has no animation.
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*
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*
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* @ingroup Lottie_Animation
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* @internal
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*/
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LOT_EXPORT size_t lottie_animation_get_frame_at_pos(const Lottie_Animation *animation, float pos);
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/**
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* @brief Request to render the content of the frame @p frame_num to buffer @p buffer.
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*
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* @param[in] animation Animation object.
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* @param[in] frame_num the frame number needs to be rendered.
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* @param[in] buffer surface buffer use for rendering.
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* @param[in] width width of the surface
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* @param[in] height height of the surface
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* @param[in] bytes_per_line stride of the surface in bytes.
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*
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*
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* @ingroup Lottie_Animation
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* @internal
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*/
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LOT_EXPORT void
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lottie_animation_render(Lottie_Animation *animation,
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size_t frame_num,
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uint32_t *buffer,
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size_t width,
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size_t height,
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size_t bytes_per_line);
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/**
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* @brief Request to render the content of the frame @p frame_num to buffer @p buffer asynchronously.
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*
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* @param[in] animation Animation object.
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* @param[in] frame_num the frame number needs to be rendered.
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* @param[in] buffer surface buffer use for rendering.
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* @param[in] width width of the surface
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* @param[in] height height of the surface
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* @param[in] bytes_per_line stride of the surface in bytes.
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*
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* @note user must call lottie_animation_render_flush() to make sure render is finished.
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*
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* @ingroup Lottie_Animation
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* @internal
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*/
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LOT_EXPORT void
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lottie_animation_render_async(Lottie_Animation *animation,
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size_t frame_num,
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uint32_t *buffer,
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size_t width,
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size_t height,
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size_t bytes_per_line);
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/**
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* @brief Request to finish the current async renderer job for this animation object.
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* If render is finished then this call returns immidiately.
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* If not, it waits till render job finish and then return.
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*
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* @param[in] animation Animation object.
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*
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* @warning User must call lottie_animation_render_async() and lottie_animation_render_flush()
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* in pair to get the benefit of async rendering.
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*
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* @return the pixel buffer it finished rendering.
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*
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* @ingroup Lottie_Animation
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* @internal
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*/
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LOT_EXPORT uint32_t *
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lottie_animation_render_flush(Lottie_Animation *animation);
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#ifdef __cplusplus
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}
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#endif
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#endif //_RLOTTIE_CAPI_H_
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