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#include <cstdio>
#include <poll.h>
#include <unistd.h>
#include <algorithm>
#include <regex>
#include <fstream>
#include <map>
#include <system_error>
#include <fmt/format.h>
#include <kms++/kms++.h>
#include <kms++util/kms++util.h>
#include <kms++util/videodevice.h>
const uint32_t NUM_SRC_BUFS = 2;
const uint32_t NUM_DST_BUFS = 2;
using namespace std;
using namespace kms;
static const char* usage_str =
"Usage: wbm2m [OPTIONS]\n\n"
"Options:\n"
" -f, --format=4CC Output format\n"
" -c, --crop=CROP CROP is <x>,<y>-<w>x<h>\n"
" -h, --help Print this help\n";
const int bar_speed = 4;
const int bar_width = 10;
static unsigned get_bar_pos(DumbFramebuffer* fb, unsigned frame_num)
{
return (frame_num * bar_speed) % (fb->width() - bar_width + 1);
}
static void read_frame(DumbFramebuffer* fb, unsigned frame_num)
{
static map<DumbFramebuffer*, int> s_bar_pos_map;
int old_pos = -1;
if (s_bar_pos_map.find(fb) != s_bar_pos_map.end())
old_pos = s_bar_pos_map[fb];
int pos = get_bar_pos(fb, frame_num);
draw_color_bar(*fb, old_pos, pos, bar_width);
draw_text(*fb, fb->width() / 2, 0, to_string(frame_num), RGB(255, 255, 255));
s_bar_pos_map[fb] = pos;
}
static void parse_crop(const string& crop_str, uint32_t& c_left, uint32_t& c_top,
uint32_t& c_width, uint32_t& c_height)
{
const regex crop_re("(\\d+),(\\d+)-(\\d+)x(\\d+)"); // 400,400-400x400
smatch sm;
if (!regex_match(crop_str, sm, crop_re))
EXIT("Failed to parse crop option '%s'", crop_str.c_str());
c_left = stoul(sm[1]);
c_top = stoul(sm[2]);
c_width = stoul(sm[3]);
c_height = stoul(sm[4]);
}
int main(int argc, char** argv)
{
// XXX get from args
const uint32_t src_width = 800;
const uint32_t src_height = 480;
const auto src_fmt = PixelFormat::XRGB8888;
const uint32_t num_src_frames = 10;
const uint32_t dst_width = 800;
const uint32_t dst_height = 480;
uint32_t c_top, c_left, c_width, c_height;
auto dst_fmt = PixelFormat::XRGB8888;
bool use_selection = false;
OptionSet optionset = {
Option("f|format=", [&](string s) {
dst_fmt = FourCCToPixelFormat(s);
}),
Option("c|crop=", [&](string s) {
parse_crop(s, c_left, c_top, c_width, c_height);
use_selection = true;
}),
Option("h|help", [&]() {
puts(usage_str);
exit(-1);
}),
};
optionset.parse(argc, argv);
if (optionset.params().size() > 0) {
puts(usage_str);
exit(-1);
}
printf("%ux%u-%s -> %ux%u-%s\n", src_width, src_height, PixelFormatToFourCC(src_fmt).c_str(),
dst_width, dst_height, PixelFormatToFourCC(dst_fmt).c_str());
const string filename = fmt::format("wb-out-{}x{}-{}.raw", dst_width, dst_height,
PixelFormatToFourCC(dst_fmt));
printf("writing to %s\n", filename.c_str());
VideoDevice vid("/dev/video10");
Card card;
uint32_t src_frame_num = 0;
uint32_t dst_frame_num = 0;
VideoStreamer* out = vid.get_output_streamer();
VideoStreamer* in = vid.get_capture_streamer();
out->set_format(src_fmt, src_width, src_height);
in->set_format(dst_fmt, dst_width, dst_height);
if (use_selection) {
out->set_selection(c_left, c_top, c_width, c_height);
printf("crop -> %u,%u-%ux%u\n", c_left, c_top, c_width, c_height);
}
out->set_queue_size(NUM_SRC_BUFS);
in->set_queue_size(NUM_DST_BUFS);
for (unsigned i = 0; i < min(NUM_SRC_BUFS, num_src_frames); ++i) {
auto fb = new DumbFramebuffer(card, src_width, src_height, src_fmt);
read_frame(fb, src_frame_num++);
out->queue(fb);
}
for (unsigned i = 0; i < min(NUM_DST_BUFS, num_src_frames); ++i) {
auto fb = new DumbFramebuffer(card, dst_width, dst_height, dst_fmt);
in->queue(fb);
}
vector<pollfd> fds(3);
fds[0].fd = 0;
fds[0].events = POLLIN;
fds[1].fd = vid.fd();
fds[1].events = POLLIN;
fds[2].fd = card.fd();
fds[2].events = POLLIN;
ofstream os(filename, ofstream::binary);
out->stream_on();
in->stream_on();
while (true) {
int r = poll(fds.data(), fds.size(), -1);
ASSERT(r > 0);
if (fds[0].revents != 0)
break;
if (fds[1].revents) {
fds[1].revents = 0;
try {
DumbFramebuffer* dst_fb = in->dequeue();
printf("Writing frame %u\n", dst_frame_num);
for (unsigned i = 0; i < dst_fb->num_planes(); ++i)
os.write((char*)dst_fb->map(i), dst_fb->size(i));
in->queue(dst_fb);
dst_frame_num++;
if (dst_frame_num >= num_src_frames)
break;
} catch (system_error& se) {
if (se.code() != errc::resource_unavailable_try_again)
FAIL("dequeue failed: %s", se.what());
break;
}
DumbFramebuffer* src_fb = out->dequeue();
if (src_frame_num < num_src_frames) {
read_frame(src_fb, src_frame_num++);
out->queue(src_fb);
}
}
if (fds[2].revents) {
fds[2].revents = 0;
}
}
printf("exiting...\n");
}
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