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Refcounting will conceptually allocate and free images all the time when using the filter chain. Add a pool that makes these reallocations cheap. This only affects the image data, not mp_image structs and similar small allocations. Small allocations are always fast with reasonable memory managers, while large image data will trigger mmap/munmap calls each time.
23 lines
694 B
C
23 lines
694 B
C
#ifndef MPV_MP_IMAGE_POOL_H
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#define MPV_MP_IMAGE_POOL_H
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struct mp_image_pool {
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int max_count;
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struct mp_image **images;
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int num_images;
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struct pool_trampoline *trampoline;
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};
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struct mp_image_pool *mp_image_pool_new(int max_count);
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struct mp_image *mp_image_pool_get(struct mp_image_pool *pool, unsigned int fmt,
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int w, int h);
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void mp_image_pool_clear(struct mp_image_pool *pool);
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struct mp_image *mp_image_pool_new_copy(struct mp_image_pool *pool,
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struct mp_image *img);
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void mp_image_pool_make_writeable(struct mp_image_pool *pool,
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struct mp_image *img);
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#endif
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