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display-kms.c
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display-kms.c
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/*
* Copyright (C) 2011 Texas Instruments
* Author: Rob Clark <[email protected]>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published by
* the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "util.h"
#include "display-kms.h"
#include <xf86drmMode.h>
#include <drm.h>
/* NOTE: healthy dose of recycling from libdrm modetest app.. */
/*
* Mode setting with the kernel interfaces is a bit of a chore.
* First you have to find the connector in question and make sure the
* requested mode is available.
* Then you need to find the encoder attached to that connector so you
* can bind it with a free crtc.
*/
struct connector {
uint32_t id;
char mode_str[64];
drmModeModeInfo *mode;
drmModeEncoder *encoder;
int crtc;
int pipe;
};
#define to_display_kms(x) container_of(x, struct display_kms, base)
struct display_kms {
struct display base;
uint32_t connectors_count;
struct connector connector[10];
drmModePlane *ovr[10];
int scheduled_flips, completed_flips;
uint32_t bo_flags;
drmModeResPtr resources;
drmModePlaneRes *plane_resources;
struct buffer *current;
bool no_master;
int mastership;
};
#define to_buffer_kms(x) container_of(x, struct buffer_kms, base)
struct buffer_kms {
struct buffer base;
uint32_t fb_id;
};
static int global_fd = 0;
static uint32_t used_planes = 0;
static int ndisplays = 0;
static struct omap_bo *
alloc_bo(struct display *disp, uint32_t bpp, uint32_t width, uint32_t height,
uint32_t *bo_handle, uint32_t *pitch)
{
struct display_kms *disp_kms = to_display_kms(disp);
struct omap_bo *bo;
uint32_t bo_flags = disp_kms->bo_flags;
if ((bo_flags & OMAP_BO_TILED) == OMAP_BO_TILED) {
bo_flags &= ~OMAP_BO_TILED;
if (bpp == 8) {
bo_flags |= OMAP_BO_TILED_8;
} else if (bpp == 16) {
bo_flags |= OMAP_BO_TILED_16;
} else if (bpp == 32) {
bo_flags |= OMAP_BO_TILED_32;
}
}
bo_flags |= OMAP_BO_WC;
if (bo_flags & OMAP_BO_TILED) {
bo = omap_bo_new_tiled(disp->dev, ALIGN2(width,7), height, bo_flags);
} else {
bo = omap_bo_new(disp->dev, width * height * bpp / 8, bo_flags);
}
if (bo) {
*bo_handle = omap_bo_handle(bo);
*pitch = width * bpp / 8;
if (bo_flags & OMAP_BO_TILED)
*pitch = ALIGN2(*pitch, PAGE_SHIFT);
}
return bo;
}
struct buffer *
alloc_buffer(struct display *disp, uint32_t fourcc, uint32_t w, uint32_t h, bool addfb)
{
struct buffer_kms *buf_kms;
struct buffer *buf;
uint32_t bo_handles[4] = {0}, offsets[4] = {0};
int ret;
buf_kms = calloc(1, sizeof(*buf_kms));
if (!buf_kms) {
ERROR("allocation failed");
return NULL;
}
buf = &buf_kms->base;
buf->fourcc = fourcc;
buf->width = w;
buf->height = h;
buf->multiplanar = true;
buf->nbo = 1;
buf->noScale = false; // full disp
if (!fourcc)
fourcc = FOURCC('A','R','2','4');
if(fourcc == FOURCC('R', 'G', 'B', '3') || fourcc == FOURCC('B', 'G', 'R', '3'))
fourcc = FOURCC('R','G','2','4');
if(fourcc == FOURCC('R', 'G', 'B', '4'))
fourcc = FOURCC('A','R','2','4');
switch(fourcc) {
case FOURCC('R','G','2','4'):
case FOURCC('B','G','2','4'):
buf->nbo = 1;
buf->bo[0] = alloc_bo(disp, 24, buf->width, buf->height,
&bo_handles[0], &buf->pitches[0]);
break;
case FOURCC('A','R','2','4'):
case FOURCC('R','A','2','4'):
buf->nbo = 1;
buf->bo[0] = alloc_bo(disp, 32, buf->width, buf->height,
&bo_handles[0], &buf->pitches[0]);
break;
case FOURCC('U','Y','V','Y'):
case FOURCC('Y','U','Y','V'):
buf->nbo = 1;
buf->bo[0] = alloc_bo(disp, 16, buf->width, buf->height,
&bo_handles[0], &buf->pitches[0]);
break;
case FOURCC('N','V','1','2'):
if (disp->multiplanar) {
buf->nbo = 2;
buf->bo[0] = alloc_bo(disp, 8, buf->width, buf->height,
&bo_handles[0], &buf->pitches[0]);
buf->fd[0] = omap_bo_dmabuf(buf->bo[0]);
buf->bo[1] = alloc_bo(disp, 16, buf->width/2, buf->height/2,
&bo_handles[1], &buf->pitches[1]);
buf->fd[1] = omap_bo_dmabuf(buf->bo[1]);
} else {
buf->nbo = 1;
buf->bo[0] = alloc_bo(disp, 8, buf->width, buf->height * 3 / 2,
&bo_handles[0], &buf->pitches[0]);
buf->fd[0] = omap_bo_dmabuf(buf->bo[0]);
bo_handles[1] = bo_handles[0];
buf->pitches[1] = buf->pitches[0];
offsets[1] = buf->width * buf->height;
buf->multiplanar = false;
}
break;
case FOURCC('I','4','2','0'):
buf->nbo = 3;
buf->bo[0] = alloc_bo(disp, 8, buf->width, buf->height,
&bo_handles[0], &buf->pitches[0]);
buf->bo[1] = alloc_bo(disp, 8, buf->width/2, buf->height/2,
&bo_handles[1], &buf->pitches[1]);
buf->bo[2] = alloc_bo(disp, 8, buf->width/2, buf->height/2,
&bo_handles[2], &buf->pitches[2]);
break;
default:
ERROR("invalid format: 0x%08x", fourcc);
goto fail;
}
if(addfb) {
ret = drmModeAddFB2(disp->fd, buf->width, buf->height, fourcc,
bo_handles, buf->pitches, offsets, &buf_kms->fb_id, 0);
if (ret) {
ERROR("drmModeAddFB2 failed: %s (%d)", strerror(errno), ret);
goto fail;
}
}
return buf;
fail:
// XXX cleanup
return NULL;
}
void
free_buffers(struct display *disp, uint32_t n)
{
uint32_t i;
for (i = 0; i < n; i++) {
if (disp->buf[i]) {
close(disp->buf[i]->fd[0]);
omap_bo_del(disp->buf[i]->bo[0]);
if(disp->multiplanar){
close(disp->buf[i]->fd[1]);
omap_bo_del(disp->buf[i]->bo[1]);
}
}
}
free(disp->buf);
}
static struct buffer **
alloc_buffers(struct display *disp, uint32_t n,
uint32_t fourcc, uint32_t w, uint32_t h)
{
struct buffer **bufs;
uint32_t i = 0;
bufs = calloc(n, sizeof(*bufs));
if (!bufs) {
ERROR("allocation failed");
goto fail;
}
for (i = 0; i < n; i++) {
bufs[i] = alloc_buffer(disp, fourcc, w, h, true);
if (!bufs[i]) {
ERROR("allocation failed");
goto fail;
}
}
disp->buf=bufs;
return bufs;
fail:
// XXX cleanup
return NULL;
}
static struct buffer **
get_buffers(struct display *disp, uint32_t n)
{
return alloc_buffers(disp, n, 0, disp->width, disp->height);
}
static struct buffer **
get_vid_buffers(struct display *disp, uint32_t n,
uint32_t fourcc, uint32_t w, uint32_t h)
{
return alloc_buffers(disp, n, fourcc, w, h);
}
static void
page_flip_handler(int fd, unsigned int frame,
unsigned int sec, unsigned int usec, void *data)
{
struct display *disp = data;
struct display_kms *disp_kms = to_display_kms(disp);
disp_kms->completed_flips++;
MSG("Page flip: frame=%d, sec=%d, usec=%d, remaining=%d", frame, sec, usec,
disp_kms->scheduled_flips - disp_kms->completed_flips);
}
static int
post_buffer(struct display *disp, struct buffer *buf)
{
struct display_kms *disp_kms = to_display_kms(disp);
struct buffer_kms *buf_kms = to_buffer_kms(buf);
int ret, last_err = 0, x = 0;
uint32_t i;
for (i = 0; i < disp_kms->connectors_count; i++) {
struct connector *connector = &disp_kms->connector[i];
if (! connector->mode) {
continue;
}
if (! disp_kms->current) {
/* first buffer we flip to, setup the mode (since this can't
* be done earlier without a buffer to scanout)
*/
MSG("Setting mode %s on connector %d, crtc %d",
connector->mode_str, connector->id, connector->crtc);
ret = drmModeSetCrtc(disp->fd, connector->crtc, buf_kms->fb_id,
x, 0, &connector->id, 1, connector->mode);
x += connector->mode->hdisplay;
} else {
ret = drmModePageFlip(disp->fd, connector->crtc, buf_kms->fb_id,
DRM_MODE_PAGE_FLIP_EVENT, disp);
disp_kms->scheduled_flips++;
}
if (ret) {
ERROR("Could not post buffer on crtc %d: %s (%d)",
connector->crtc, strerror(errno), ret);
last_err = ret;
/* well, keep trying the reset of the connectors.. */
}
}
/* if we flipped, wait for all flips to complete! */
while (disp_kms->scheduled_flips > disp_kms->completed_flips) {
drmEventContext evctx = {
.version = DRM_EVENT_CONTEXT_VERSION,
.page_flip_handler = page_flip_handler,
};
struct timeval timeout = {
.tv_sec = 3,
.tv_usec = 0,
};
fd_set fds;
FD_ZERO(&fds);
FD_SET(disp->fd, &fds);
ret = select(disp->fd + 1, &fds, NULL, NULL, &timeout);
if (ret <= 0) {
if (errno == EAGAIN) {
continue; /* keep going */
} else {
ERROR("Timeout waiting for flip complete: %s (%d)",
strerror(errno), ret);
last_err = ret;
break;
}
}
drmHandleEvent(disp->fd, &evctx);
}
disp_kms->current = buf;
return last_err;
}
#if 0
int
get_overlay_plane(struct display *disp, struct buffer *buf)
{
struct display_kms *disp_kms = to_display_kms(disp);
uint32_t i, ret;
for (i = 0; i < disp_kms->connectors_count; i++) {
struct connector *connector = &disp_kms->connector[i];
drmModeModeInfo *mode = connector->mode;
disp_kms->ovr[i] = drmModeGetPlane(disp->fd,
disp_kms->plane_resources->planes[1]);
ret = drmModeObjectSetProperty(disp->fd,
disp_kms->ovr[i]->plane_id, DRM_MODE_OBJECT_PLANE, 7, 3);
if (ret < 0) {
MSG("Could not set Z order for plane");
return ret;
}
}
return 0;
}
#endif
static int
post_vid_buffer(struct display *disp, struct buffer *buf,
uint32_t x, uint32_t y, uint32_t w, uint32_t h)
{
struct display_kms *disp_kms = to_display_kms(disp);
struct buffer_kms *buf_kms = to_buffer_kms(buf);
int ret = 0;
uint32_t i, j;
/* ensure we have the overlay setup: */
for (i = 0; i < disp_kms->connectors_count; i++) {
struct connector *connector = &disp_kms->connector[i];
drmModeModeInfo *mode = connector->mode;
if (! mode) {
continue;
}
if (! disp_kms->ovr[i]) {
for (j = 0; j < disp_kms->plane_resources->count_planes; j++) {
if (used_planes & (1 << j)) {
continue;
}
drmModePlane *ovr = drmModeGetPlane(disp->fd,
disp_kms->plane_resources->planes[j]);
if (ovr->possible_crtcs & (1 << connector->pipe)) {
disp_kms->ovr[i] = ovr;
used_planes |= (1 << j);
break;
}
}
}
if (! disp_kms->ovr[i]) {
MSG("Could not find plane for crtc %d", connector->crtc);
ret = -1;
/* carry on and see if we can find at least one usable plane */
continue;
}
if(buf->noScale) {
ret = drmModeSetPlane(disp->fd, disp_kms->ovr[i]->plane_id,
connector->crtc, buf_kms->fb_id, 0,
/* Use x and y as co-ordinates of overlay */
x, y, buf->width, buf->height,
/* Consider source x and y is 0 always */
0, 0, w << 16, h << 16);
} else {
ret = drmModeSetPlane(disp->fd, disp_kms->ovr[i]->plane_id,
connector->crtc, buf_kms->fb_id, 0,
/* make video fullscreen: */
0, 0, mode->hdisplay, mode->vdisplay,
/* source/cropping coordinates are given in Q16 */
x << 16, y << 16, w << 16, h << 16);
}
if (ret) {
ERROR("failed to enable plane %d: %s",
disp_kms->ovr[i]->plane_id, strerror(errno));
}
}
if (disp_kms->no_master && disp_kms->mastership) {
/* Drop mastership after the first buffer on each plane is
* displayed. This will lock these planes for us and allow
* others to consume remaining
*/
disp_kms->mastership = 0;
drmDropMaster(disp->fd);
}
return ret;
}
static void
close_kms(struct display *disp)
{
struct display_kms *disp_kms = to_display_kms(disp);
omap_device_del(disp->dev);
disp->dev = NULL;
if (used_planes) {
used_planes >>= 1;
}
if (--ndisplays == 0) {
close(global_fd);
}
free(disp_kms);
disp = NULL;
}
static void
connector_find_mode(struct display *disp, struct connector *c)
{
struct display_kms *disp_kms = to_display_kms(disp);
drmModeConnector *connector;
int i, j;
/* First, find the connector & mode */
c->mode = NULL;
for (i = 0; i < disp_kms->resources->count_connectors; i++) {
connector = drmModeGetConnector(disp->fd,
disp_kms->resources->connectors[i]);
if (!connector) {
ERROR("could not get connector %i: %s",
disp_kms->resources->connectors[i], strerror(errno));
drmModeFreeConnector(connector);
continue;
}
if (!connector->count_modes) {
drmModeFreeConnector(connector);
continue;
}
if (connector->connector_id != c->id) {
drmModeFreeConnector(connector);
continue;
}
for (j = 0; j < connector->count_modes; j++) {
c->mode = &connector->modes[j];
if (!strcmp(c->mode->name, c->mode_str))
break;
}
/* Found it, break out */
if (c->mode)
break;
drmModeFreeConnector(connector);
}
if (!c->mode) {
ERROR("failed to find mode \"%s\"", c->mode_str);
return;
}
/* Now get the encoder */
for (i = 0; i < disp_kms->resources->count_encoders; i++) {
c->encoder = drmModeGetEncoder(disp->fd,
disp_kms->resources->encoders[i]);
if (!c->encoder) {
ERROR("could not get encoder %i: %s",
disp_kms->resources->encoders[i], strerror(errno));
drmModeFreeEncoder(c->encoder);
continue;
}
if (c->encoder->encoder_id == connector->encoder_id)
break;
drmModeFreeEncoder(c->encoder);
}
if (c->crtc == -1)
c->crtc = c->encoder->crtc_id;
/* and figure out which crtc index it is: */
for (i = 0; i < disp_kms->resources->count_crtcs; i++) {
if (c->crtc == (int)disp_kms->resources->crtcs[i]) {
c->pipe = i;
break;
}
}
}
void
disp_kms_usage(void)
{
MSG("KMS Display Options:");
MSG("\t-1 \t\tforce single-plane buffers");
MSG("\t-t <tiled-mode>\t8, 16, 32, or auto");
MSG("\t-s <connector_id>:<mode>\tset a mode");
MSG("\t-s <connector_id>@<crtc_id>:<mode>\tset a mode");
}
struct display *
disp_kms_open(int argc, char **argv)
{
struct display_kms *disp_kms = NULL;
struct display *disp;
int i;
disp_kms = calloc(1, sizeof(*disp_kms));
if (!disp_kms) {
ERROR("allocation failed");
goto fail;
}
disp = &disp_kms->base;
if (!global_fd) {
global_fd = drmOpen("omapdrm", NULL);
if (global_fd < 0) {
ERROR("could not open drm device: %s (%d)", strerror(errno), errno);
goto fail;
}
}
disp->fd = global_fd;
ndisplays++; /* increment the number of displays counter */
disp->dev = omap_device_new(disp->fd);
if (!disp->dev) {
ERROR("couldn't create device");
goto fail;
}
disp->get_buffers = get_buffers;
disp->get_vid_buffers = get_vid_buffers;
disp->post_buffer = post_buffer;
disp->post_vid_buffer = post_vid_buffer;
disp->close = close_kms;
disp->disp_free_buf = free_buffers ;
disp_kms->resources = drmModeGetResources(disp->fd);
if (!disp_kms->resources) {
ERROR("drmModeGetResources failed: %s", strerror(errno));
goto fail;
}
disp_kms->plane_resources = drmModeGetPlaneResources(disp->fd);
if (!disp_kms->plane_resources) {
ERROR("drmModeGetPlaneResources failed: %s", strerror(errno));
goto fail;
}
disp->multiplanar = true;
/* note: set args to NULL after we've parsed them so other modules know
* that it is already parsed (since the arg parsing is decentralized)
*/
for (i = 1; i < argc; i++) {
if (!argv[i]) {
continue;
}
if (!strcmp("-1", argv[i])) {
disp->multiplanar = false;
} else if (!strcmp("-t", argv[i])) {
int n;
argv[i++] = NULL;
if (!strcmp(argv[i], "auto")) {
n = 0;
} else if (sscanf(argv[i], "%d", &n) != 1) {
ERROR("invalid arg: %s", argv[i]);
goto fail;
}
disp_kms->bo_flags &= ~OMAP_BO_TILED;
if (n == 8) {
disp_kms->bo_flags |= OMAP_BO_TILED_8;
} else if (n == 16) {
disp_kms->bo_flags |= OMAP_BO_TILED_16;
} else if (n == 32) {
disp_kms->bo_flags |= OMAP_BO_TILED_32;
} else if (n == 0) {
disp_kms->bo_flags |= OMAP_BO_TILED;
} else {
ERROR("invalid arg: %s", argv[i]);
goto fail;
}
} else if (!strcmp("-s", argv[i])) {
struct connector *connector =
&disp_kms->connector[disp_kms->connectors_count++];
connector->crtc = -1;
argv[i++] = NULL;
if (sscanf(argv[i], "%d:%64s",
&connector->id,
connector->mode_str) != 2 &&
sscanf(argv[i], "%d@%d:%64s",
&connector->id,
&connector->crtc,
connector->mode_str) != 3) {
// TODO: we could support connector specified as a name too, I suppose
ERROR("invalid arg: %s", argv[i]);
goto fail;
}
disp_kms->bo_flags |= OMAP_BO_SCANOUT;
} else if (!strcmp("-nm", argv[i])) {
disp_kms->no_master = true;
disp_kms->mastership = 1;
} else {
/* ignore */
continue;
}
argv[i] = NULL;
}
disp->width = 0;
disp->height = 0;
for (i = 0; i < (int)disp_kms->connectors_count; i++) {
struct connector *c = &disp_kms->connector[i];
connector_find_mode(disp, c);
if (c->mode == NULL)
continue;
/* setup side-by-side virtual display */
disp->width += c->mode->hdisplay;
if (disp->height < c->mode->vdisplay) {
disp->height = c->mode->vdisplay;
}
}
disp->overlay_p.id = 20;
disp->overlay_p.z_val = 3; // Range: 0 to 3 lowest value for bottom
disp->overlay_p.glo_alp = 255;//150; // 255 : transparency 0.
disp->overlay_p.pre_mul_alp = 0;
MSG("display : using %d connectors, %dx%d",
disp_kms->connectors_count, disp->width, disp->height);
return disp;
fail:
// XXX cleanup
return NULL;
}
void disp_kms_usage(void);
struct display * disp_kms_open(int argc, char **argv);
#ifdef HAVE_X11
void disp_x11_usage(void);
struct display * disp_x11_open(int argc, char **argv);
void disp_x11_close(struct display *disp);
#endif
#ifdef HAVE_KMSCUBE
void disp_kmscube_usage(void);
struct display * disp_kmscube_open(int argc, char **argv);
#endif
#ifdef HAVE_WAYLAND
void disp_wayland_usage(void);
struct display *disp_wayland_open(int argc, char **argv);
#endif
void
disp_usage(void)
{
MSG("Generic Display options:");
MSG("\t--debug\tTurn on debug messages.");
MSG("\t--fps <fps>\tforce playback rate (0 means \"do not force\")");
MSG("\t--no-post\tDo not post buffers (disables screen updates) for benchmarking. Rate can still be controlled.");
#ifdef HAVE_X11
disp_x11_usage();
#endif
#ifdef HAVE_KMSCUBE
disp_kmscube_usage();
#endif
#ifdef HAVE_WAYLAND
disp_wayland_usage();
#endif
disp_kms_usage();
}
static int
empty_post_buffer(struct display *disp, struct buffer *buf)
{
return 0;
}
static int
empty_post_vid_buffer(struct display *disp, struct buffer *buf,
uint32_t x, uint32_t y, uint32_t w, uint32_t h)
{
return 0;
}
struct display *
disp_open(int argc, char **argv)
{
struct display *disp;
int i, fps = 0, no_post = 0;
for (i = 1; i < argc; i++) {
if (!argv[i]) {
continue;
}
if (!strcmp("--debug", argv[i])) {
debug = 1;
MSG("Enabling dynamic debug.");
argv[i] = NULL;
} else if (!strcmp("--fps", argv[i])) {
argv[i++] = NULL;
if (sscanf(argv[i], "%d", &fps) != 1) {
ERROR("invalid arg: %s", argv[i]);
return NULL;
}
MSG("Forcing playback rate at %d fps.", fps);
argv[i] = NULL;
} else if (!strcmp("--no-post", argv[i])) {
MSG("Disabling buffers posting.");
no_post = 1;
argv[i] = NULL;
}
}
#ifdef HAVE_X11
disp = disp_x11_open(argc, argv);
if (disp)
goto out;
#endif
#ifdef HAVE_KMSCUBE
disp = disp_kmscube_open(argc, argv);
if (disp)
goto out;
#endif
#ifdef HAVE_WAYLAND
disp = disp_wayland_open(argc, argv);
if (disp)
goto out;
#endif
disp = disp_kms_open(argc, argv);
if (!disp) {
ERROR("unable to create display");
return NULL;
}
out:
disp->rtctl.fps = fps;
/* If buffer posting is disabled from command line, override post
* functions with empty ones. */
if (no_post) {
disp->post_buffer = empty_post_buffer;
disp->post_vid_buffer = empty_post_vid_buffer;
}
return disp;
}
struct buffer **
disp_get_vid_buffers(struct display *disp, uint32_t n,
uint32_t fourcc, uint32_t w, uint32_t h)
{
struct buffer **buffers;
unsigned int i;
buffers = disp->get_vid_buffers(disp, n, fourcc, w, h);
if (buffers) {
/* if allocation succeeded, store in the unlocked
* video buffer list
*/
list_init(&disp->unlocked);
for (i = 0; i < n; i++)
list_add(&buffers[i]->unlocked, &disp->unlocked);
}
return buffers;
}
void
disp_free_buffers(struct display *disp, uint32_t n)
{
disp->disp_free_buf(disp, n);
}
struct buffer *
disp_get_vid_buffer(struct display *disp)
{
struct buffer *buf = NULL;
if (!list_is_empty(&disp->unlocked)) {
buf = list_last_entry(&disp->unlocked, struct buffer, unlocked);
list_del(&buf->unlocked);
/* barrier.. if we are using GPU blitting, we need to make sure
* that the GPU is finished:
*/
omap_bo_cpu_prep(buf->bo[0], OMAP_GEM_WRITE);
omap_bo_cpu_fini(buf->bo[0], OMAP_GEM_WRITE);
}
return buf;
}
void
disp_put_vid_buffer(struct display *disp, struct buffer *buf)
{
list_add(&buf->unlocked, &disp->unlocked);
}
/* flip to / post the specified buffer */
int
disp_post_buffer(struct display *disp, struct buffer *buf)
{
int ret;
ret = disp->post_buffer(disp, buf);
if(!ret)
maintain_playback_rate(&disp->rtctl);
return ret;
}
/* flip to / post the specified video buffer */
int
disp_post_vid_buffer(struct display *disp, struct buffer *buf,
uint32_t x, uint32_t y, uint32_t w, uint32_t h)
{
int ret;
ret = disp->post_vid_buffer(disp, buf, x, y, w, h);
if(!ret)
maintain_playback_rate(&disp->rtctl);
return ret;
}
struct buffer *
disp_get_fb(struct display *disp)
{
struct buffer **bufs = disp_get_buffers(disp, 1);
if (!bufs)
return NULL;
fill(bufs[0], 42);
disp_post_buffer(disp, bufs[0]);
return bufs[0];
}
/* stolen from modetest.c */
static void
fillRGB4(char *virtual, int n, int width, int height, int stride)
{
int i, j;
/* paint the buffer with colored tiles */
for (j = 0; j < height; j++) {
uint32_t *fb_ptr = (uint32_t*)((char*)virtual + j * stride);
for (i = 0; i < width; i++) {
div_t d = div(n+i+j, width);
fb_ptr[i] =
0x00130502 * (d.quot >> 6) +
0x000a1120 * (d.rem >> 6);
}
}
}
/* swap these for big endian.. */
#define RED 2
#define GREEN 1
#define BLUE 0
static void
fill420(unsigned char *y, unsigned char *u, unsigned char *v,
int cs /*chroma pixel stride */,
int n, int width, int height, int stride)
{
int i, j;
/* paint the buffer with colored tiles, in blocks of 2x2 */
for (j = 0; j < height; j+=2) {
unsigned char *y1p = y + j * stride;
unsigned char *y2p = y1p + stride;
unsigned char *up = u + (j/2) * stride * cs / 2;
unsigned char *vp = v + (j/2) * stride * cs / 2;
for (i = 0; i < width; i+=2) {
div_t d = div(n+i+j, width);
uint32_t rgb = 0x00130502 * (d.quot >> 6) + 0x000a1120 * (d.rem >> 6);
unsigned char *rgbp = (unsigned char *)&rgb;
unsigned char y = (0.299 * rgbp[RED]) + (0.587 * rgbp[GREEN]) + (0.114 * rgbp[BLUE]);
*(y2p++) = *(y1p++) = y;
*(y2p++) = *(y1p++) = y;
*up = (rgbp[BLUE] - y) * 0.565 + 128;
*vp = (rgbp[RED] - y) * 0.713 + 128;
up += cs;
vp += cs;
}
}
}
static void
fill422(unsigned char *virtual, int n, int width, int height, int stride)
{
int i, j;
/* paint the buffer with colored tiles */
for (j = 0; j < height; j++) {
uint8_t *ptr = (uint8_t*)((char*)virtual + j * stride);
for (i = 0; i < width; i++) {
div_t d = div(n+i+j, width);
uint32_t rgb = 0x00130502 * (d.quot >> 6) + 0x000a1120 * (d.rem >> 6);
unsigned char *rgbp = (unsigned char *)&rgb;
unsigned char y = (0.299 * rgbp[RED]) + (0.587 * rgbp[GREEN]) + (0.114 * rgbp[BLUE]);
*(ptr++) = y;
*(ptr++) = (rgbp[BLUE] - y) * 0.565 + 128;
*(ptr++) = y;
*(ptr++) = (rgbp[RED] - y) * 0.713 + 128;
}
}
}
void
fill(struct buffer *buf, int n)
{
int i;
for (i = 0; i < buf->nbo; i++)
omap_bo_cpu_prep(buf->bo[i], OMAP_GEM_WRITE);
switch(buf->fourcc) {
case 0: {
assert(buf->nbo == 1);
fillRGB4(omap_bo_map(buf->bo[0]), n,
buf->width, buf->height, buf->pitches[0]);
break;