mirror of https://github.com/mpv-player/mpv
239 lines
6.1 KiB
C
239 lines
6.1 KiB
C
#include "common/msg.h"
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#include "video/out/vo.h"
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#include "utils.h"
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// Standard parallel 2D projection, except y1 < y0 means that the coordinate
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// system is flipped, not the projection.
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void gl_transform_ortho(struct gl_transform *t, float x0, float x1,
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float y0, float y1)
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{
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if (y1 < y0) {
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float tmp = y0;
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y0 = tmp - y1;
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y1 = tmp;
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}
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t->m[0][0] = 2.0f / (x1 - x0);
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t->m[0][1] = 0.0f;
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t->m[1][0] = 0.0f;
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t->m[1][1] = 2.0f / (y1 - y0);
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t->t[0] = -(x1 + x0) / (x1 - x0);
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t->t[1] = -(y1 + y0) / (y1 - y0);
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}
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// Apply the effects of one transformation to another, transforming it in the
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// process. In other words: post-composes t onto x
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void gl_transform_trans(struct gl_transform t, struct gl_transform *x)
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{
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struct gl_transform xt = *x;
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x->m[0][0] = t.m[0][0] * xt.m[0][0] + t.m[0][1] * xt.m[1][0];
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x->m[1][0] = t.m[1][0] * xt.m[0][0] + t.m[1][1] * xt.m[1][0];
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x->m[0][1] = t.m[0][0] * xt.m[0][1] + t.m[0][1] * xt.m[1][1];
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x->m[1][1] = t.m[1][0] * xt.m[0][1] + t.m[1][1] * xt.m[1][1];
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gl_transform_vec(t, &x->t[0], &x->t[1]);
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}
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void gl_transform_ortho_fbodst(struct gl_transform *t, struct fbodst fbo)
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{
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int y_dir = fbo.flip ? -1 : 1;
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gl_transform_ortho(t, 0, fbo.tex->params.w, 0, fbo.tex->params.h * y_dir);
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}
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// Create a texture and a FBO using the texture as color attachments.
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// fmt: texture internal format
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// If the parameters are the same as the previous call, do not touch it.
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// flags can be 0, or a combination of FBOTEX_FUZZY_W and FBOTEX_FUZZY_H.
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// Enabling FUZZY for W or H means the w or h does not need to be exact.
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bool fbotex_change(struct fbotex *fbo, struct ra *ra, struct mp_log *log,
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int w, int h, const struct ra_format *fmt, int flags)
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{
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int lw = w, lh = h;
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if (fbo->tex) {
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int cw = w, ch = h;
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int rw = fbo->tex->params.w, rh = fbo->tex->params.h;
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if ((flags & FBOTEX_FUZZY_W) && cw < rw)
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cw = rw;
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if ((flags & FBOTEX_FUZZY_H) && ch < rh)
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ch = rh;
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if (rw == cw && rh == ch && fbo->tex->params.format == fmt)
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goto done;
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}
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if (flags & FBOTEX_FUZZY_W)
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w = MP_ALIGN_UP(w, 256);
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if (flags & FBOTEX_FUZZY_H)
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h = MP_ALIGN_UP(h, 256);
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mp_verbose(log, "Create FBO: %dx%d (%dx%d)\n", lw, lh, w, h);
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if (!fmt || !fmt->renderable || !fmt->linear_filter) {
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mp_err(log, "Format %s not supported.\n", fmt ? fmt->name : "(unset)");
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return false;
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}
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fbotex_uninit(fbo);
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*fbo = (struct fbotex) {
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.ra = ra,
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};
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struct ra_tex_params params = {
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.dimensions = 2,
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.w = w,
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.h = h,
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.d = 1,
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.format = fmt,
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.src_linear = true,
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.render_src = true,
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.render_dst = true,
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};
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fbo->tex = ra_tex_create(fbo->ra, ¶ms);
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if (!fbo->tex) {
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mp_err(log, "Error: framebuffer could not be created.\n");
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fbotex_uninit(fbo);
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return false;
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}
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done:
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fbo->lw = lw;
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fbo->lh = lh;
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fbo->fbo = (struct fbodst){
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.tex = fbo->tex,
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};
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return true;
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}
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void fbotex_uninit(struct fbotex *fbo)
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{
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if (fbo->ra) {
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ra_tex_free(fbo->ra, &fbo->tex);
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*fbo = (struct fbotex) {0};
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}
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}
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struct timer_pool {
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struct ra *ra;
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ra_timer *timer;
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bool running; // detect invalid usage
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uint64_t samples[PERF_SAMPLE_COUNT];
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int sample_idx;
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int sample_count;
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uint64_t avg_sum;
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uint64_t peak;
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};
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struct timer_pool *timer_pool_create(struct ra *ra)
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{
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ra_timer *timer = ra->fns->timer_create(ra);
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if (!timer)
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return NULL;
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struct timer_pool *pool = talloc(NULL, struct timer_pool);
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if (!pool) {
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ra->fns->timer_destroy(ra, timer);
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return NULL;
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}
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*pool = (struct timer_pool){ .ra = ra, .timer = timer };
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return pool;
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}
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void timer_pool_destroy(struct timer_pool *pool)
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{
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if (!pool)
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return;
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pool->ra->fns->timer_destroy(pool->ra, pool->timer);
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talloc_free(pool);
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}
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void timer_pool_start(struct timer_pool *pool)
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{
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if (!pool)
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return;
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assert(!pool->running);
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pool->ra->fns->timer_start(pool->ra, pool->timer);
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pool->running = true;
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}
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void timer_pool_stop(struct timer_pool *pool)
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{
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if (!pool)
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return;
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assert(pool->running);
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uint64_t res = pool->ra->fns->timer_stop(pool->ra, pool->timer);
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pool->running = false;
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if (res) {
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// Input res into the buffer and grab the previous value
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uint64_t old = pool->samples[pool->sample_idx];
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pool->samples[pool->sample_idx++] = res;
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pool->sample_idx %= PERF_SAMPLE_COUNT;
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// Update average and sum
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pool->avg_sum = pool->avg_sum + res - old;
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pool->sample_count = MPMIN(pool->sample_count + 1, PERF_SAMPLE_COUNT);
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// Update peak if necessary
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if (res >= pool->peak) {
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pool->peak = res;
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} else if (pool->peak == old) {
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// It's possible that the last peak was the value we just removed,
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// if so we need to scan for the new peak
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uint64_t peak = res;
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for (int i = 0; i < PERF_SAMPLE_COUNT; i++)
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peak = MPMAX(peak, pool->samples[i]);
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pool->peak = peak;
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}
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}
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}
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struct mp_pass_perf timer_pool_measure(struct timer_pool *pool)
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{
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if (!pool)
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return (struct mp_pass_perf){0};
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struct mp_pass_perf res = {
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.count = pool->sample_count,
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.index = (pool->sample_idx - pool->sample_count) % PERF_SAMPLE_COUNT,
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.peak = pool->peak,
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.samples = pool->samples,
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};
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res.last = pool->samples[(pool->sample_idx - 1) % PERF_SAMPLE_COUNT];
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if (pool->sample_count > 0) {
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res.avg = pool->avg_sum / pool->sample_count;
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}
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return res;
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}
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void mp_log_source(struct mp_log *log, int lev, const char *src)
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{
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int line = 1;
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if (!src)
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return;
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while (*src) {
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const char *end = strchr(src, '\n');
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const char *next = end + 1;
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if (!end)
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next = end = src + strlen(src);
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mp_msg(log, lev, "[%3d] %.*s\n", line, (int)(end - src), src);
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line++;
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src = next;
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}
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}
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