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https://github.com/mpv-player/mpv
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62bd8da490
Normally, input and output are orthogonal. But zimg may gain image formats not supported by FFmpeg, which means the conversion will only work if zimg is used at all. This on the other hand, depends on whether the other format is also supported by zimg. (For example, a later commit adds RGB30 output to zimg. libswscale does not support this format. But if you have P010 as input, which the zimg wrapper does not support at all, the conversion won't work.) This makes such a function needed; so add it.
70 lines
2.2 KiB
C
70 lines
2.2 KiB
C
#ifndef MPLAYER_SWS_UTILS_H
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#define MPLAYER_SWS_UTILS_H
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#include <stdbool.h>
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#include "mp_image.h"
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struct mp_image;
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struct mpv_global;
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// libswscale currently requires 16 bytes alignment for row pointers and
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// strides. Otherwise, it will print warnings and use slow codepaths.
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// Guaranteed to be a power of 2 and > 1.
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#define SWS_MIN_BYTE_ALIGN MP_IMAGE_BYTE_ALIGN
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extern const int mp_sws_hq_flags;
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extern const int mp_sws_fast_flags;
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bool mp_sws_supported_format(int imgfmt);
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int mp_image_swscale(struct mp_image *dst, struct mp_image *src,
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int my_sws_flags);
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int mp_image_sw_blur_scale(struct mp_image *dst, struct mp_image *src,
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float gblur);
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struct mp_sws_context {
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// Can be set for verbose error printing.
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struct mp_log *log;
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// User configuration. These can be changed freely, at any time.
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// mp_sws_scale() will handle the changes transparently.
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int flags;
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int brightness, contrast, saturation;
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bool allow_zimg; // use zimg if available (ignores filters and all)
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bool force_reload;
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// These are also implicitly set by mp_sws_scale(), and thus optional.
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// Setting them before that call makes sense when using mp_sws_reinit().
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struct mp_image_params src, dst;
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// Changing these requires setting force_reload=true.
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// By default, they are NULL.
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// Freeing the mp_sws_context will deallocate these if set.
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struct SwsFilter *src_filter, *dst_filter;
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double params[2];
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// Cached context (if any)
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struct SwsContext *sws;
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bool supports_csp;
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// Private.
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struct mp_sws_context *cached; // contains parameters for which sws is valid
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struct mp_zimg_context *zimg;
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bool opts_allow_zimg, zimg_ok;
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};
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struct mp_sws_context *mp_sws_alloc(void *talloc_ctx);
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int mp_sws_reinit(struct mp_sws_context *ctx);
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void mp_sws_set_from_cmdline(struct mp_sws_context *ctx, struct mpv_global *g);
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int mp_sws_scale(struct mp_sws_context *ctx, struct mp_image *dst,
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struct mp_image *src);
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bool mp_sws_supports_formats(struct mp_sws_context *ctx,
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int imgfmt_out, int imgfmt_in);
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struct mp_image *mp_img_swap_to_native(struct mp_image *img);
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#endif /* MP_SWS_UTILS_H */
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// vim: ts=4 sw=4 et tw=80
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