mirror of
https://github.com/mpv-player/mpv
synced 2024-12-27 09:32:40 +00:00
9190b3c469
Will be needed by draw_bmp.c. The tests cross-check this with zimg to control whether we're getting it right.
77 lines
3.8 KiB
C
77 lines
3.8 KiB
C
#pragma once
|
|
|
|
#include <stdbool.h>
|
|
|
|
enum {
|
|
// This controls bheavior with different bit widths per component (like
|
|
// RGB565). If ROUND_DOWN is specified, the planar format will use the min.
|
|
// bit width of all components, otherwise the transformation is lossless.
|
|
REPACK_CREATE_ROUND_DOWN = (1 << 0),
|
|
|
|
// Expand some (not all) low bit depth fringe formats to 8 bit on unpack.
|
|
REPACK_CREATE_EXPAND_8BIT = (1 << 1),
|
|
|
|
// For mp_repack_create_planar(). If specified, the planar format uses a
|
|
// float 32 bit sample format. No range expansion is done.
|
|
REPACK_CREATE_PLANAR_F32 = (1 << 2),
|
|
};
|
|
|
|
struct mp_repack;
|
|
struct mp_image;
|
|
|
|
// Create a repacker between any format (imgfmt parameter) and an equivalent
|
|
// planar format (that is native endian). If pack==true, imgfmt is the output,
|
|
// otherwise it is the input. The respective other input/output is the planar
|
|
// format. The planar format can be queried with mp_repack_get_format_*().
|
|
// Note that some formats may change the "implied" colorspace (for example,
|
|
// packed xyz unpacks as rgb).
|
|
// If imgfmt is already planar, a passthrough repacker may be created.
|
|
// imgfmt: src or dst format (usually packed, non-planar, etc.)
|
|
// pack: true if imgfmt is dst, false if imgfmt is src
|
|
// flags: any of REPACK_CREATE_* flags
|
|
// returns: NULL on failure, otherwise free with talloc_free().
|
|
struct mp_repack *mp_repack_create_planar(int imgfmt, bool pack, int flags);
|
|
|
|
// Return input and output formats for which rp was created.
|
|
int mp_repack_get_format_src(struct mp_repack *rp);
|
|
int mp_repack_get_format_dst(struct mp_repack *rp);
|
|
|
|
// Return pixel alignment. For x, this is a lowest pixel count at which there is
|
|
// a byte boundary and a full chroma pixel (horizontal subsampling) on src/dst.
|
|
// For y, this is the pixel height of the vertical subsampling.
|
|
// Always returns a power of 2.
|
|
int mp_repack_get_align_x(struct mp_repack *rp);
|
|
int mp_repack_get_align_y(struct mp_repack *rp);
|
|
|
|
// Repack a single line from dst to src, as set in repack_config_buffers().
|
|
// For subsampled chroma formats, this copies as many luma/alpha rows as needed
|
|
// for a complete line (e.g. 2 luma lines, 1 chroma line for 4:2:0).
|
|
// dst_x, src_x, y must be aligned to the pixel alignment. w may be unaligned
|
|
// if at the right crop-border of the image, but must be always aligned to
|
|
// horiz. sub-sampling. y is subject to hslice.
|
|
void repack_line(struct mp_repack *rp, int dst_x, int dst_y,
|
|
int src_x, int src_y, int w);
|
|
|
|
// Configure with a source and target buffer. The rp instance will keep the
|
|
// mp_image pointers and access them on repack_line() calls. Refcounting is
|
|
// not respected - the caller needs to make sure dst is always writable.
|
|
// The images can have different sizes (as repack_line() lets you use different
|
|
// target coordinates for dst/src).
|
|
// This also allocaters potentially required temporary buffers.
|
|
// dst_flags: REPACK_BUF_* flags for dst
|
|
// dst: where repack_line() writes to
|
|
// src_flags: REPACK_BUF_* flags for src
|
|
// src: where repack_line() reads from
|
|
// enable_passthrough: if non-NULL, an bool array of size MP_MAX_PLANES indexed
|
|
// by plane; a true entry requests disabling copying the
|
|
// plane data to the dst plane. The function will write to
|
|
// this array whether the plane can really be passed through
|
|
// (i.e. will set array entries from true to false if pass-
|
|
// through is not possible). It writes to all MP_MAX_PLANES
|
|
// entries. If NULL, all entries are implicitly false.
|
|
// returns: success (fails on OOM)
|
|
bool repack_config_buffers(struct mp_repack *rp,
|
|
int dst_flags, struct mp_image *dst,
|
|
int src_flags, struct mp_image *src,
|
|
bool *enable_passthrough);
|