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libobs: Add ability to rotate async sources
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@ -1186,6 +1186,14 @@ Functions used by sources
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---------------------
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.. function:: void obs_source_set_async_rotation(obs_source_t *source, long rotation)
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Allows the ability to set rotation (0, 90, 180, -90, 270) for an
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async video source. The rotation will be automatically applied to
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the source.
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---------------------
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.. function:: void obs_source_preload_video(obs_source_t *source, const struct obs_source_frame *frame)
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Preloads a video frame to ensure a frame is ready for playback as
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@ -641,6 +641,7 @@ struct obs_source {
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bool async_cache_full_range;
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enum gs_color_format async_texture_formats[MAX_AV_PLANES];
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int async_channel_count;
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long async_rotation;
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bool async_flip;
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bool async_active;
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bool async_update_texture;
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@ -2038,10 +2038,41 @@ static void obs_source_update_async_video(obs_source_t *source)
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}
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}
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static void rotate_async_video(obs_source_t *source, long rotation)
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{
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float x = 0;
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float y = 0;
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switch (rotation) {
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case 90:
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y = (float)source->async_width;
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break;
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case 270:
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case -90:
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x = (float)source->async_height;
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break;
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case 180:
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x = (float)source->async_width;
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y = (float)source->async_height;
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}
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gs_matrix_translate3f(x, y, 0);
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gs_matrix_rotaa4f(0.0f, 0.0f, -1.0f, RAD((float)rotation));
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}
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static inline void obs_source_render_async_video(obs_source_t *source)
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{
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if (source->async_textures[0] && source->async_active)
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if (source->async_textures[0] && source->async_active) {
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long rotation = source->async_rotation;
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if (rotation) {
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gs_matrix_push();
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rotate_async_video(source, rotation);
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}
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obs_source_draw_async_texture(source);
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if (rotation) {
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gs_matrix_pop();
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}
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}
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}
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static inline void obs_source_render_filters(obs_source_t *source)
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@ -2165,6 +2196,18 @@ void obs_source_video_render(obs_source_t *source)
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obs_source_release(source);
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}
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static inline uint32_t get_async_width(const obs_source_t *source)
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{
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return ((source->async_rotation % 180) == 0) ? source->async_width
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: source->async_height;
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}
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static inline uint32_t get_async_height(const obs_source_t *source)
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{
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return ((source->async_rotation % 180) == 0) ? source->async_height
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: source->async_width;
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}
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static uint32_t get_base_width(const obs_source_t *source)
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{
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bool is_filter = !!source->filter_parent;
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@ -2180,7 +2223,7 @@ static uint32_t get_base_width(const obs_source_t *source)
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return get_base_width(source->filter_target);
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}
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return source->async_active ? source->async_width : 0;
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return source->async_active ? get_async_width(source) : 0;
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}
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static uint32_t get_base_height(const obs_source_t *source)
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@ -2198,7 +2241,7 @@ static uint32_t get_base_height(const obs_source_t *source)
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return get_base_height(source->filter_target);
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}
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return source->async_active ? source->async_height : 0;
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return source->async_active ? get_async_height(source) : 0;
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}
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static uint32_t get_recurse_width(obs_source_t *source)
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@ -2800,6 +2843,12 @@ void obs_source_output_video2(obs_source_t *source,
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obs_source_output_video_internal(source, &new_frame);
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}
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void obs_source_set_async_rotation(obs_source_t *source, long rotation)
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{
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if (source)
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source->async_rotation = rotation;
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}
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static inline bool preload_frame_changed(obs_source_t *source,
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const struct obs_source_frame *in)
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{
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@ -1175,6 +1175,8 @@ EXPORT void obs_source_output_video(obs_source_t *source,
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EXPORT void obs_source_output_video2(obs_source_t *source,
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const struct obs_source_frame2 *frame);
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EXPORT void obs_source_set_async_rotation(obs_source_t *source, long rotation);
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/**
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* Preloads asynchronous video data to allow instantaneous playback
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*
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