mirror of
https://github.com/mpv-player/mpv
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9efce6d4ae
Most sources don't need config.h. The inclusion only leads to lots of unneeded recompilation if the configuration is changed.
825 lines
29 KiB
C
825 lines
29 KiB
C
/*
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* This file is part of mpv.
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*
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* mpv 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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* mpv 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
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* GNU 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 mpv. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <assert.h>
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#include <string.h>
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#include <libavcodec/avcodec.h>
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#include <libavutil/imgutils.h>
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#include <libavutil/pixfmt.h>
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#include <libavutil/pixdesc.h>
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#include "video/img_format.h"
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#include "video/mp_image.h"
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#include "video/fmt-conversion.h"
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struct mp_imgfmt_entry {
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const char *name;
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// Valid if flags!=0.
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// This can be incomplete, and missing fields are filled in:
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// - sets num_planes and bpp[], derived from comps[] (rounds to bytes)
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// - sets MP_IMGFLAG_GRAY, derived from comps[]
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// - sets MP_IMGFLAG_ALPHA, derived from comps[]
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// - sets align_x/y if 0, derived from chroma shift
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// - sets xs[]/ys[] always, derived from num_planes/chroma_shift
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// - sets MP_IMGFLAG_HAS_COMPS|MP_IMGFLAG_NE if num_planes>0
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// - sets MP_IMGFLAG_TYPE_UINT if no other type set
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// - sets id to mp_imgfmt_list[] implied format
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struct mp_imgfmt_desc desc;
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};
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#define FRINGE_GBRP(def, dname, b) \
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[def - IMGFMT_CUST_BASE] = { \
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.name = dname, \
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.desc = { .flags = MP_IMGFLAG_COLOR_RGB, \
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.comps = { {2, 0, 8, (b) - 8}, {0, 0, 8, (b) - 8}, \
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{1, 0, 8, (b) - 8}, }, }}
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#define FLOAT_YUV(def, dname, xs, ys, a) \
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[def - IMGFMT_CUST_BASE] = { \
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.name = dname, \
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.desc = { .flags = MP_IMGFLAG_COLOR_YUV | MP_IMGFLAG_TYPE_FLOAT, \
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.chroma_xs = xs, .chroma_ys = ys, \
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.comps = { {0, 0, 32}, {1, 0, 32}, {2, 0, 32}, \
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{3 * (a), 0, 32 * (a)} }, }}
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static const struct mp_imgfmt_entry mp_imgfmt_list[] = {
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// not in ffmpeg
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[IMGFMT_VDPAU_OUTPUT - IMGFMT_CUST_BASE] = {
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.name = "vdpau_output",
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.desc = {
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.flags = MP_IMGFLAG_NE | MP_IMGFLAG_RGB | MP_IMGFLAG_HWACCEL,
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},
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},
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[IMGFMT_RGB30 - IMGFMT_CUST_BASE] = {
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.name = "rgb30",
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.desc = {
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.flags = MP_IMGFLAG_RGB,
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.comps = { {0, 20, 10}, {0, 10, 10}, {0, 0, 10} },
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},
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},
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[IMGFMT_YAP8 - IMGFMT_CUST_BASE] = {
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.name = "yap8",
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.desc = {
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.flags = MP_IMGFLAG_COLOR_YUV,
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.comps = { {0, 0, 8}, {0}, {0}, {1, 0, 8} },
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},
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},
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[IMGFMT_YAP16 - IMGFMT_CUST_BASE] = {
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.name = "yap16",
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.desc = {
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.flags = MP_IMGFLAG_COLOR_YUV,
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.comps = { {0, 0, 16}, {0}, {0}, {1, 0, 16} },
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},
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},
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[IMGFMT_Y1 - IMGFMT_CUST_BASE] = {
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.name = "y1",
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.desc = {
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.flags = MP_IMGFLAG_COLOR_RGB,
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.comps = { {0, 0, 8, -7} },
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},
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},
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[IMGFMT_YAPF - IMGFMT_CUST_BASE] = {
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.name = "grayaf32", // try to mimic ffmpeg naming convention
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.desc = {
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.flags = MP_IMGFLAG_COLOR_YUV | MP_IMGFLAG_TYPE_FLOAT,
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.comps = { {0, 0, 32}, {0}, {0}, {1, 0, 32} },
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},
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},
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FLOAT_YUV(IMGFMT_444PF, "yuv444pf", 0, 0, 0),
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FLOAT_YUV(IMGFMT_444APF, "yuva444pf", 0, 0, 1),
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FLOAT_YUV(IMGFMT_420PF, "yuv420pf", 1, 1, 0),
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FLOAT_YUV(IMGFMT_420APF, "yuva420pf", 1, 1, 1),
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FLOAT_YUV(IMGFMT_422PF, "yuv422pf", 1, 0, 0),
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FLOAT_YUV(IMGFMT_422APF, "yuva422pf", 1, 0, 1),
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FLOAT_YUV(IMGFMT_440PF, "yuv440pf", 0, 1, 0),
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FLOAT_YUV(IMGFMT_440APF, "yuva440pf", 0, 1, 1),
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FLOAT_YUV(IMGFMT_410PF, "yuv410pf", 2, 2, 0),
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FLOAT_YUV(IMGFMT_410APF, "yuva410pf", 2, 2, 1),
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FLOAT_YUV(IMGFMT_411PF, "yuv411pf", 2, 0, 0),
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FLOAT_YUV(IMGFMT_411APF, "yuva411pf", 2, 0, 1),
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FRINGE_GBRP(IMGFMT_GBRP1, "gbrp1", 1),
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FRINGE_GBRP(IMGFMT_GBRP2, "gbrp2", 2),
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FRINGE_GBRP(IMGFMT_GBRP3, "gbrp3", 3),
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FRINGE_GBRP(IMGFMT_GBRP4, "gbrp4", 4),
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FRINGE_GBRP(IMGFMT_GBRP5, "gbrp5", 5),
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FRINGE_GBRP(IMGFMT_GBRP6, "gbrp6", 6),
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// in FFmpeg, but FFmpeg names have an annoying "_vld" suffix
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[IMGFMT_VIDEOTOOLBOX - IMGFMT_CUST_BASE] = {
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.name = "videotoolbox",
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},
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[IMGFMT_VAAPI - IMGFMT_CUST_BASE] = {
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.name = "vaapi",
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},
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};
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static const struct mp_imgfmt_entry *get_mp_desc(int imgfmt)
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{
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if (imgfmt < IMGFMT_CUST_BASE)
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return NULL;
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int index = imgfmt - IMGFMT_CUST_BASE;
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if (index >= MP_ARRAY_SIZE(mp_imgfmt_list))
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return NULL;
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const struct mp_imgfmt_entry *e = &mp_imgfmt_list[index];
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return e->name ? e : NULL;
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}
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char **mp_imgfmt_name_list(void)
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{
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int count = IMGFMT_END - IMGFMT_START;
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char **list = talloc_zero_array(NULL, char *, count + 1);
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int num = 0;
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for (int n = IMGFMT_START; n < IMGFMT_END; n++) {
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const char *name = mp_imgfmt_to_name(n);
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if (strcmp(name, "unknown") != 0)
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list[num++] = talloc_strdup(list, name);
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}
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return list;
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}
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int mp_imgfmt_from_name(bstr name)
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{
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if (bstr_equals0(name, "none"))
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return 0;
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for (int n = 0; n < MP_ARRAY_SIZE(mp_imgfmt_list); n++) {
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const struct mp_imgfmt_entry *p = &mp_imgfmt_list[n];
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if (p->name && bstr_equals0(name, p->name))
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return IMGFMT_CUST_BASE + n;
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}
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return pixfmt2imgfmt(av_get_pix_fmt(mp_tprintf(80, "%.*s", BSTR_P(name))));
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}
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char *mp_imgfmt_to_name_buf(char *buf, size_t buf_size, int fmt)
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{
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const struct mp_imgfmt_entry *p = get_mp_desc(fmt);
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const char *name = p ? p->name : NULL;
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if (!name) {
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const AVPixFmtDescriptor *pixdesc = av_pix_fmt_desc_get(imgfmt2pixfmt(fmt));
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if (pixdesc)
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name = pixdesc->name;
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}
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if (!name)
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name = "unknown";
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snprintf(buf, buf_size, "%s", name);
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int len = strlen(buf);
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if (len > 2 && buf[len - 2] == MP_SELECT_LE_BE('l', 'b') && buf[len - 1] == 'e')
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buf[len - 2] = '\0';
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return buf;
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}
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static void fill_pixdesc_layout(struct mp_imgfmt_desc *desc,
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enum AVPixelFormat fmt,
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const AVPixFmtDescriptor *pd)
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{
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if (pd->flags & AV_PIX_FMT_FLAG_PAL ||
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pd->flags & AV_PIX_FMT_FLAG_HWACCEL)
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goto fail;
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bool has_alpha = pd->flags & AV_PIX_FMT_FLAG_ALPHA;
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if (pd->nb_components != 1 + has_alpha &&
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pd->nb_components != 3 + has_alpha)
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goto fail;
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// Very convenient: we assume we're always on little endian, and FFmpeg
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// explicitly marks big endian formats => don't need to guess whether a
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// format is little endian, or not affected by byte order.
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bool is_be = pd->flags & AV_PIX_FMT_FLAG_BE;
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bool is_ne = MP_SELECT_LE_BE(false, true) == is_be;
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// Packed sub-sampled YUV is very... special.
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bool is_packed_ss_yuv = pd->log2_chroma_w && !pd->log2_chroma_h &&
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pd->comp[1].plane == 0 && pd->comp[2].plane == 0 &&
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pd->nb_components == 3;
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if (is_packed_ss_yuv)
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desc->bpp[0] = pd->comp[1].step * 8;
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// Determine if there are any byte overlaps => relevant for determining
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// access unit for endian, since pixdesc does not expose this, and assumes
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// a weird model where you do separate memory fetches for each component.
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bool any_shared_bytes = !!(pd->flags & AV_PIX_FMT_FLAG_BITSTREAM);
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for (int c = 0; c < pd->nb_components; c++) {
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for (int i = 0; i < c; i++) {
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const AVComponentDescriptor *d1 = &pd->comp[c];
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const AVComponentDescriptor *d2 = &pd->comp[i];
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if (d1->plane == d2->plane) {
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if (d1->offset + (d1->depth + 7) / 8u > d2->offset &&
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d2->offset + (d2->depth + 7) / 8u > d1->offset)
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any_shared_bytes = true;
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}
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}
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}
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int el_bits = (pd->flags & AV_PIX_FMT_FLAG_BITSTREAM) ? 1 : 8;
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for (int c = 0; c < pd->nb_components; c++) {
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const AVComponentDescriptor *d = &pd->comp[c];
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if (d->plane >= MP_MAX_PLANES)
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goto fail;
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desc->num_planes = MPMAX(desc->num_planes, d->plane + 1);
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int plane_bits = desc->bpp[d->plane];
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int c_bits = d->step * el_bits;
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// The first component wins, because either all components result in
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// the same value, or luma wins (luma always comes before chroma).
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if (plane_bits) {
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if (c_bits > plane_bits)
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goto fail; // inconsistent
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} else {
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desc->bpp[d->plane] = plane_bits = c_bits;
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}
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int shift = d->shift;
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// What the fuck: for some inexplicable reason, MONOB uses shift=7
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// in pixdesc, which is basically out of bounds. Pixdesc bug?
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// Make it behave like MONOW. (No, the bit-order is not different.)
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if (fmt == AV_PIX_FMT_MONOBLACK)
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shift = 0;
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int offset = d->offset * el_bits;
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// The pixdesc logic for reading and endian swapping is as follows
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// (reverse engineered from av_read_image_line2()):
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// - determine a word size that will include the component fully;
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// this includes the "active" bits and the amount "shifted" away
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// (for example shift=7/depth=18 => 32 bit word reading [31:0])
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// - the same format can use different word sizes (e.g. bgr565: the R
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// component at offset 0 is read as 8 bit; BG is read as 16 bits)
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// - if BE flag is set, swap the word before proceeding
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// - extract via shift and mask derived by depth
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int word = mp_round_next_power_of_2(MPMAX(d->depth + shift, 8));
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// The purpose of this is unknown. It's an absurdity fished out of
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// av_read_image_line2()'s implementation. It seems technically
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// unnecessary, and provides no information. On the other hand, it
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// compensates for seemingly bogus packed integer pixdescs; this
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// is "why" some formats use d->offset = -1.
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if (is_be && el_bits == 8 && word == 8)
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offset += 8;
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// Pixdesc's model sometimes requires accesses with varying word-sizes,
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// as seen in bgr565 and other formats. Also, it makes you read some
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// formats with multiple endian-dependent accesses, where accessing a
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// larger unit would make more sense. (Consider X2RGB10BE, for which
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// pixdesc wants you to perform 3 * 2 byte accesses, and swap each of
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// the read 16 bit words. What you really want is to swap the entire 4
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// byte thing, and then extract the components with bit shifts).
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// This is complete bullshit, so we transform it into word swaps before
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// further processing. Care needs to be taken to not change formats like
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// P010 or YA16 (prefer component accesses for them; P010 isn't even
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// representable, because endian_shift is for all planes).
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// As a heuristic, assume that if any components share a byte, the whole
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// pixel is read as a single memory access and endian swapped at once.
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int access_size = 8;
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if (plane_bits > 8) {
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if (any_shared_bytes) {
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access_size = plane_bits;
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if (is_be && word != access_size) {
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// Before: offset = 8*byte_offset (with word bits of data)
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// After: offset = bit_offset into swapped endian_size word
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offset = access_size - word - offset;
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}
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} else {
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access_size = word;
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}
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}
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int endian_size = (access_size && !is_ne) ? access_size : 8;
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int endian_shift = mp_log2(endian_size) - 3;
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if (!MP_IS_POWER_OF_2(endian_size) || endian_shift < 0 || endian_shift > 3)
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goto fail;
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if (desc->endian_shift && desc->endian_shift != endian_shift)
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goto fail;
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desc->endian_shift = endian_shift;
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// We always use bit offsets; this doesn't lose any information,
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// and pixdesc is merely more redundant.
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offset += shift;
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if (offset < 0 || offset >= (1 << 6))
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goto fail;
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if (offset + d->depth > plane_bits)
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goto fail;
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if (d->depth < 0 || d->depth >= (1 << 6))
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goto fail;
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desc->comps[c] = (struct mp_imgfmt_comp_desc){
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.plane = d->plane,
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.offset = offset,
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.size = d->depth,
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};
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}
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for (int p = 0; p < desc->num_planes; p++) {
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if (!desc->bpp[p])
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goto fail; // plane doesn't exist
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}
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// What the fuck: this is probably a pixdesc bug, so fix it.
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if (fmt == AV_PIX_FMT_RGB8) {
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desc->comps[2] = (struct mp_imgfmt_comp_desc){0, 0, 2};
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desc->comps[1] = (struct mp_imgfmt_comp_desc){0, 2, 3};
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desc->comps[0] = (struct mp_imgfmt_comp_desc){0, 5, 3};
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}
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// Overlap test. If any shared bits are happening, this is not a format we
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// can represent (or it's something like Bayer: components in the same bits,
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// but different alternating lines).
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bool any_shared_bits = false;
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for (int c = 0; c < pd->nb_components; c++) {
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for (int i = 0; i < c; i++) {
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struct mp_imgfmt_comp_desc *c1 = &desc->comps[c];
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struct mp_imgfmt_comp_desc *c2 = &desc->comps[i];
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if (c1->plane == c2->plane) {
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if (c1->offset + c1->size > c2->offset &&
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c2->offset + c2->size > c1->offset)
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any_shared_bits = true;
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}
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}
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}
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if (any_shared_bits) {
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for (int c = 0; c < pd->nb_components; c++)
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desc->comps[c] = (struct mp_imgfmt_comp_desc){0};
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}
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// Many important formats have padding within an access word. For example
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// yuv420p10 has the upper 6 bit cleared to 0; P010 has the lower 6 bits
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// cleared to 0. Pixdesc cannot represent that these bits are 0. There are
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// other formats where padding is not guaranteed to be 0, but they are
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// described in the same way.
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// Apply a heuristic that is supposed to identify formats which use
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// guaranteed 0 padding. This could fail, but nobody said this pixdesc crap
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// is robust.
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for (int c = 0; c < pd->nb_components; c++) {
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struct mp_imgfmt_comp_desc *cd = &desc->comps[c];
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// Note: rgb444 would defeat our heuristic if we checked only per comp.
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// also, exclude "bitstream" formats due to monow/monob
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int fsize = MP_ALIGN_UP(cd->size, 8);
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if (!any_shared_bytes && el_bits == 8 && fsize != cd->size &&
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fsize - cd->size <= (1 << 3))
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{
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if (!(cd->offset % 8u)) {
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cd->pad = -(fsize - cd->size);
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cd->size = fsize;
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} else if (!((cd->offset + cd->size) % 8u)) {
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cd->pad = fsize - cd->size;
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cd->size = fsize;
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cd->offset = MP_ALIGN_DOWN(cd->offset, 8);
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}
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}
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}
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// The alpha component always has ID 4 (index 3) in our representation, so
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// move the alpha component to there.
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if (has_alpha && pd->nb_components < 4) {
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desc->comps[3] = desc->comps[pd->nb_components - 1];
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desc->comps[pd->nb_components - 1] = (struct mp_imgfmt_comp_desc){0};
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}
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if (is_packed_ss_yuv) {
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desc->flags |= MP_IMGFLAG_PACKED_SS_YUV;
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desc->bpp[0] /= 1 << pd->log2_chroma_w;
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} else if (!any_shared_bits) {
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desc->flags |= MP_IMGFLAG_HAS_COMPS;
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}
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return;
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fail:
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for (int n = 0; n < 4; n++)
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desc->comps[n] = (struct mp_imgfmt_comp_desc){0};
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// Average bit size fallback.
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desc->num_planes = av_pix_fmt_count_planes(fmt);
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for (int p = 0; p < desc->num_planes; p++) {
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int ls = av_image_get_linesize(fmt, 256, p);
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desc->bpp[p] = ls > 0 ? ls * 8 / 256 : 0;
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}
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}
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static bool mp_imgfmt_get_desc_from_pixdesc(int mpfmt, struct mp_imgfmt_desc *out)
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{
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enum AVPixelFormat fmt = imgfmt2pixfmt(mpfmt);
|
|
const AVPixFmtDescriptor *pd = av_pix_fmt_desc_get(fmt);
|
|
if (!pd || pd->nb_components > 4)
|
|
return false;
|
|
|
|
struct mp_imgfmt_desc desc = {
|
|
.id = mpfmt,
|
|
.chroma_xs = pd->log2_chroma_w,
|
|
.chroma_ys = pd->log2_chroma_h,
|
|
};
|
|
|
|
if (pd->flags & AV_PIX_FMT_FLAG_ALPHA)
|
|
desc.flags |= MP_IMGFLAG_ALPHA;
|
|
|
|
if (pd->flags & AV_PIX_FMT_FLAG_HWACCEL)
|
|
desc.flags |= MP_IMGFLAG_TYPE_HW;
|
|
|
|
// Pixdesc does not provide a flag for XYZ, so this is the best we can do.
|
|
if (strncmp(pd->name, "xyz", 3) == 0) {
|
|
desc.flags |= MP_IMGFLAG_COLOR_XYZ;
|
|
} else if (pd->flags & AV_PIX_FMT_FLAG_RGB) {
|
|
desc.flags |= MP_IMGFLAG_COLOR_RGB;
|
|
} else if (fmt == AV_PIX_FMT_MONOBLACK || fmt == AV_PIX_FMT_MONOWHITE) {
|
|
desc.flags |= MP_IMGFLAG_COLOR_RGB;
|
|
} else if (fmt == AV_PIX_FMT_PAL8) {
|
|
desc.flags |= MP_IMGFLAG_COLOR_RGB | MP_IMGFLAG_TYPE_PAL8;
|
|
}
|
|
|
|
if (pd->flags & AV_PIX_FMT_FLAG_FLOAT)
|
|
desc.flags |= MP_IMGFLAG_TYPE_FLOAT;
|
|
|
|
// Educated guess.
|
|
if (!(desc.flags & MP_IMGFLAG_COLOR_MASK) &&
|
|
!(desc.flags & MP_IMGFLAG_TYPE_HW))
|
|
desc.flags |= MP_IMGFLAG_COLOR_YUV;
|
|
|
|
desc.align_x = 1 << desc.chroma_xs;
|
|
desc.align_y = 1 << desc.chroma_ys;
|
|
|
|
fill_pixdesc_layout(&desc, fmt, pd);
|
|
|
|
if (desc.flags & (MP_IMGFLAG_HAS_COMPS | MP_IMGFLAG_PACKED_SS_YUV)) {
|
|
if (!(desc.flags & MP_IMGFLAG_TYPE_MASK))
|
|
desc.flags |= MP_IMGFLAG_TYPE_UINT;
|
|
}
|
|
|
|
if (desc.bpp[0] % 8u && (pd->flags & AV_PIX_FMT_FLAG_BITSTREAM))
|
|
desc.align_x = 8 / desc.bpp[0]; // expect power of 2
|
|
|
|
// Very heuristical.
|
|
bool is_ne = !desc.endian_shift;
|
|
bool need_endian = (desc.comps[0].size % 8u && desc.bpp[0] > 8) ||
|
|
desc.comps[0].size > 8;
|
|
|
|
if (need_endian) {
|
|
bool is_le = MP_SELECT_LE_BE(is_ne, !is_ne);
|
|
desc.flags |= is_le ? MP_IMGFLAG_LE : MP_IMGFLAG_BE;
|
|
} else {
|
|
desc.flags |= MP_IMGFLAG_LE | MP_IMGFLAG_BE;
|
|
}
|
|
|
|
*out = desc;
|
|
return true;
|
|
}
|
|
|
|
bool mp_imgfmt_get_packed_yuv_locations(int imgfmt, uint8_t *luma_offsets)
|
|
{
|
|
struct mp_imgfmt_desc desc = mp_imgfmt_get_desc(imgfmt);
|
|
if (!(desc.flags & MP_IMGFLAG_PACKED_SS_YUV))
|
|
return false;
|
|
|
|
assert(desc.num_planes == 1);
|
|
|
|
// Guess at which positions the additional luma samples are. We iterate
|
|
// starting with the first byte, and then put a luma sample at places
|
|
// not covered by other luma/chroma.
|
|
// Pixdesc does not and can not provide this information. This heuristic
|
|
// may fail in certain cases. What a load of bullshit, right?
|
|
int lsize = desc.comps[0].size;
|
|
int cur_offset = 0;
|
|
for (int lsample = 1; lsample < (1 << desc.chroma_xs); lsample++) {
|
|
while (1) {
|
|
if (cur_offset + lsize > desc.bpp[0] * desc.align_x)
|
|
return false;
|
|
bool free = true;
|
|
for (int c = 0; c < 3; c++) {
|
|
struct mp_imgfmt_comp_desc *cd = &desc.comps[c];
|
|
if (!cd->size)
|
|
continue;
|
|
if (cd->offset + cd->size > cur_offset &&
|
|
cur_offset + lsize > cd->offset)
|
|
{
|
|
free = false;
|
|
break;
|
|
}
|
|
}
|
|
if (free)
|
|
break;
|
|
cur_offset += lsize;
|
|
}
|
|
luma_offsets[lsample] = cur_offset;
|
|
cur_offset += lsize;
|
|
}
|
|
|
|
luma_offsets[0] = desc.comps[0].offset;
|
|
return true;
|
|
}
|
|
|
|
static bool get_native_desc(int mpfmt, struct mp_imgfmt_desc *desc)
|
|
{
|
|
const struct mp_imgfmt_entry *p = get_mp_desc(mpfmt);
|
|
if (!p || !p->desc.flags)
|
|
return false;
|
|
|
|
*desc = p->desc;
|
|
|
|
// Fill in some fields mp_imgfmt_entry.desc is not required to set.
|
|
|
|
desc->id = mpfmt;
|
|
|
|
for (int n = 0; n < MP_NUM_COMPONENTS; n++) {
|
|
struct mp_imgfmt_comp_desc *cd = &desc->comps[n];
|
|
if (cd->size)
|
|
desc->num_planes = MPMAX(desc->num_planes, cd->plane + 1);
|
|
desc->bpp[cd->plane] =
|
|
MPMAX(desc->bpp[cd->plane], MP_ALIGN_UP(cd->offset + cd->size, 8));
|
|
}
|
|
|
|
if (!desc->align_x && !desc->align_y) {
|
|
desc->align_x = 1 << desc->chroma_xs;
|
|
desc->align_y = 1 << desc->chroma_ys;
|
|
}
|
|
|
|
if (desc->num_planes)
|
|
desc->flags |= MP_IMGFLAG_HAS_COMPS | MP_IMGFLAG_NE;
|
|
|
|
if (!(desc->flags & MP_IMGFLAG_TYPE_MASK))
|
|
desc->flags |= MP_IMGFLAG_TYPE_UINT;
|
|
|
|
return true;
|
|
}
|
|
|
|
int mp_imgfmt_desc_get_num_comps(struct mp_imgfmt_desc *desc)
|
|
{
|
|
int flags = desc->flags;
|
|
if (!(flags & MP_IMGFLAG_COLOR_MASK))
|
|
return 0;
|
|
return 3 + (flags & MP_IMGFLAG_GRAY ? -2 : 0) + !!(flags & MP_IMGFLAG_ALPHA);
|
|
}
|
|
|
|
struct mp_imgfmt_desc mp_imgfmt_get_desc(int mpfmt)
|
|
{
|
|
struct mp_imgfmt_desc desc;
|
|
|
|
if (!get_native_desc(mpfmt, &desc) &&
|
|
!mp_imgfmt_get_desc_from_pixdesc(mpfmt, &desc))
|
|
return (struct mp_imgfmt_desc){0};
|
|
|
|
for (int p = 0; p < desc.num_planes; p++) {
|
|
desc.xs[p] = (p == 1 || p == 2) ? desc.chroma_xs : 0;
|
|
desc.ys[p] = (p == 1 || p == 2) ? desc.chroma_ys : 0;
|
|
}
|
|
|
|
bool is_ba = desc.num_planes > 0;
|
|
for (int p = 0; p < desc.num_planes; p++)
|
|
is_ba = !(desc.bpp[p] % 8u);
|
|
|
|
if (is_ba)
|
|
desc.flags |= MP_IMGFLAG_BYTE_ALIGNED;
|
|
|
|
if (desc.flags & MP_IMGFLAG_HAS_COMPS) {
|
|
if (desc.comps[3].size)
|
|
desc.flags |= MP_IMGFLAG_ALPHA;
|
|
|
|
// Assuming all colors are (CCC+[A]) or (C+[A]), the latter being gray.
|
|
if (!desc.comps[1].size)
|
|
desc.flags |= MP_IMGFLAG_GRAY;
|
|
|
|
bool bb = true;
|
|
for (int n = 0; n < MP_NUM_COMPONENTS; n++) {
|
|
if (desc.comps[n].offset % 8u || desc.comps[n].size % 8u)
|
|
bb = false;
|
|
}
|
|
if (bb)
|
|
desc.flags |= MP_IMGFLAG_BYTES;
|
|
}
|
|
|
|
if ((desc.flags & (MP_IMGFLAG_YUV | MP_IMGFLAG_RGB))
|
|
&& (desc.flags & MP_IMGFLAG_HAS_COMPS)
|
|
&& (desc.flags & MP_IMGFLAG_BYTES)
|
|
&& ((desc.flags & MP_IMGFLAG_TYPE_MASK) == MP_IMGFLAG_TYPE_UINT))
|
|
{
|
|
int cnt = mp_imgfmt_desc_get_num_comps(&desc);
|
|
bool same_depth = true;
|
|
for (int p = 0; p < desc.num_planes; p++)
|
|
same_depth &= desc.bpp[p] == desc.bpp[0];
|
|
if (same_depth && cnt == desc.num_planes) {
|
|
if (desc.flags & MP_IMGFLAG_YUV) {
|
|
desc.flags |= MP_IMGFLAG_YUV_P;
|
|
} else {
|
|
desc.flags |= MP_IMGFLAG_RGB_P;
|
|
}
|
|
}
|
|
if (cnt == 3 && desc.num_planes == 2 &&
|
|
desc.bpp[1] == desc.bpp[0] * 2 &&
|
|
(desc.flags & MP_IMGFLAG_YUV))
|
|
{
|
|
|
|
desc.flags |= MP_IMGFLAG_YUV_NV;
|
|
}
|
|
}
|
|
|
|
return desc;
|
|
}
|
|
|
|
static bool validate_regular_imgfmt(const struct mp_regular_imgfmt *fmt)
|
|
{
|
|
bool present[MP_NUM_COMPONENTS] = {0};
|
|
int n_comp = 0;
|
|
|
|
for (int n = 0; n < fmt->num_planes; n++) {
|
|
const struct mp_regular_imgfmt_plane *plane = &fmt->planes[n];
|
|
n_comp += plane->num_components;
|
|
if (n_comp > MP_NUM_COMPONENTS)
|
|
return false;
|
|
if (!plane->num_components)
|
|
return false; // no empty planes in between allowed
|
|
|
|
bool pad_only = true;
|
|
int chroma_luma = 0; // luma: 1, chroma: 2, both: 3
|
|
for (int i = 0; i < plane->num_components; i++) {
|
|
int comp = plane->components[i];
|
|
if (comp > MP_NUM_COMPONENTS)
|
|
return false;
|
|
if (comp == 0)
|
|
continue;
|
|
pad_only = false;
|
|
if (present[comp - 1])
|
|
return false; // no duplicates
|
|
present[comp - 1] = true;
|
|
chroma_luma |= (comp == 2 || comp == 3) ? 2 : 1;
|
|
}
|
|
if (pad_only)
|
|
return false; // no planes with only padding allowed
|
|
if ((fmt->chroma_xs > 0 || fmt->chroma_ys > 0) && chroma_luma == 3)
|
|
return false; // separate chroma/luma planes required
|
|
}
|
|
|
|
if (!(present[0] || present[3]) || // at least component 1 or alpha needed
|
|
(present[1] && !present[0]) || // component 2 requires component 1
|
|
(present[2] && !present[1])) // component 3 requires component 2
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
static enum mp_csp get_forced_csp_from_flags(int flags)
|
|
{
|
|
if (flags & MP_IMGFLAG_COLOR_XYZ)
|
|
return MP_CSP_XYZ;
|
|
|
|
if (flags & MP_IMGFLAG_COLOR_RGB)
|
|
return MP_CSP_RGB;
|
|
|
|
return MP_CSP_AUTO;
|
|
}
|
|
|
|
enum mp_csp mp_imgfmt_get_forced_csp(int imgfmt)
|
|
{
|
|
return get_forced_csp_from_flags(mp_imgfmt_get_desc(imgfmt).flags);
|
|
}
|
|
|
|
static enum mp_component_type get_component_type_from_flags(int flags)
|
|
{
|
|
if (flags & MP_IMGFLAG_TYPE_UINT)
|
|
return MP_COMPONENT_TYPE_UINT;
|
|
|
|
if (flags & MP_IMGFLAG_TYPE_FLOAT)
|
|
return MP_COMPONENT_TYPE_FLOAT;
|
|
|
|
return MP_COMPONENT_TYPE_UNKNOWN;
|
|
}
|
|
|
|
enum mp_component_type mp_imgfmt_get_component_type(int imgfmt)
|
|
{
|
|
return get_component_type_from_flags(mp_imgfmt_get_desc(imgfmt).flags);
|
|
}
|
|
|
|
int mp_find_other_endian(int imgfmt)
|
|
{
|
|
return pixfmt2imgfmt(av_pix_fmt_swap_endianness(imgfmt2pixfmt(imgfmt)));
|
|
}
|
|
|
|
bool mp_get_regular_imgfmt(struct mp_regular_imgfmt *dst, int imgfmt)
|
|
{
|
|
struct mp_regular_imgfmt res = {0};
|
|
|
|
struct mp_imgfmt_desc desc = mp_imgfmt_get_desc(imgfmt);
|
|
if (!desc.num_planes)
|
|
return false;
|
|
res.num_planes = desc.num_planes;
|
|
|
|
if (desc.endian_shift || !(desc.flags & MP_IMGFLAG_HAS_COMPS))
|
|
return false;
|
|
|
|
res.component_type = get_component_type_from_flags(desc.flags);
|
|
if (!res.component_type)
|
|
return false;
|
|
|
|
struct mp_imgfmt_comp_desc *comp0 = &desc.comps[0];
|
|
if (comp0->size < 1 || comp0->size > 64 || (comp0->size % 8u))
|
|
return false;
|
|
|
|
res.component_size = comp0->size / 8u;
|
|
res.component_pad = comp0->pad;
|
|
|
|
for (int n = 0; n < res.num_planes; n++) {
|
|
if (desc.bpp[n] % comp0->size)
|
|
return false;
|
|
res.planes[n].num_components = desc.bpp[n] / comp0->size;
|
|
}
|
|
|
|
for (int n = 0; n < MP_NUM_COMPONENTS; n++) {
|
|
struct mp_imgfmt_comp_desc *comp = &desc.comps[n];
|
|
if (!comp->size)
|
|
continue;
|
|
|
|
struct mp_regular_imgfmt_plane *plane = &res.planes[comp->plane];
|
|
|
|
res.num_planes = MPMAX(res.num_planes, comp->plane + 1);
|
|
|
|
// We support uniform depth only.
|
|
if (comp->size != comp0->size || comp->pad != comp0->pad)
|
|
return false;
|
|
|
|
// Size-aligned only.
|
|
int pos = comp->offset / comp->size;
|
|
if (comp->offset != pos * comp->size || pos >= MP_NUM_COMPONENTS)
|
|
return false;
|
|
|
|
if (plane->components[pos])
|
|
return false;
|
|
plane->components[pos] = n + 1;
|
|
}
|
|
|
|
res.chroma_xs = desc.chroma_xs;
|
|
res.chroma_ys = desc.chroma_ys;
|
|
|
|
res.forced_csp = get_forced_csp_from_flags(desc.flags);
|
|
|
|
if (!validate_regular_imgfmt(&res))
|
|
return false;
|
|
|
|
*dst = res;
|
|
return true;
|
|
}
|
|
|
|
static bool regular_imgfmt_equals(struct mp_regular_imgfmt *a,
|
|
struct mp_regular_imgfmt *b)
|
|
{
|
|
if (a->component_type != b->component_type ||
|
|
a->component_size != b->component_size ||
|
|
a->num_planes != b->num_planes ||
|
|
a->component_pad != b->component_pad ||
|
|
a->forced_csp != b->forced_csp ||
|
|
a->chroma_xs != b->chroma_xs ||
|
|
a->chroma_ys != b->chroma_ys)
|
|
return false;
|
|
|
|
for (int n = 0; n < a->num_planes; n++) {
|
|
int num_comps = a->planes[n].num_components;
|
|
if (num_comps != b->planes[n].num_components)
|
|
return false;
|
|
for (int i = 0; i < num_comps; i++) {
|
|
if (a->planes[n].components[i] != b->planes[n].components[i])
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
// Find a format that matches this one exactly.
|
|
int mp_find_regular_imgfmt(struct mp_regular_imgfmt *src)
|
|
{
|
|
for (int n = IMGFMT_START + 1; n < IMGFMT_END; n++) {
|
|
struct mp_regular_imgfmt f;
|
|
if (mp_get_regular_imgfmt(&f, n) && regular_imgfmt_equals(src, &f))
|
|
return n;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
// Compare the dst image formats, and return the one which can carry more data
|
|
// (e.g. higher depth, more color components, lower chroma subsampling, etc.),
|
|
// with respect to what is required to keep most of the src format.
|
|
// Returns the imgfmt, or 0 on error.
|
|
int mp_imgfmt_select_best(int dst1, int dst2, int src)
|
|
{
|
|
enum AVPixelFormat dst1pxf = imgfmt2pixfmt(dst1);
|
|
enum AVPixelFormat dst2pxf = imgfmt2pixfmt(dst2);
|
|
enum AVPixelFormat srcpxf = imgfmt2pixfmt(src);
|
|
enum AVPixelFormat dstlist[] = {dst1pxf, dst2pxf, AV_PIX_FMT_NONE};
|
|
return pixfmt2imgfmt(avcodec_find_best_pix_fmt_of_list(dstlist, srcpxf, 1, 0));
|
|
}
|
|
|
|
// Same as mp_imgfmt_select_best(), but with a list of dst formats.
|
|
int mp_imgfmt_select_best_list(int *dst, int num_dst, int src)
|
|
{
|
|
int best = 0;
|
|
for (int n = 0; n < num_dst; n++)
|
|
best = best ? mp_imgfmt_select_best(best, dst[n], src) : dst[n];
|
|
return best;
|
|
}
|