#include "jpeg_frame_view.h"
+#include <jpeglib.h>
#include <stdint.h>
#include <atomic>
#include <mutex>
#include <thread>
#include <utility>
-#include <QGraphicsPixmapItem>
-#include <QPixmap>
+
+#include <movit/resource_pool.h>
+#include <movit/init.h>
+#include <movit/util.h>
#include "defs.h"
#include "post_to_main_thread.h"
+using namespace movit;
using namespace std;
string filename_for_frame(unsigned stream_idx, int64_t pts);
return make_pair(a.stream_idx, a.pts) < make_pair(b.stream_idx, b.pts);
}
-struct LRUPixmap {
- shared_ptr<QPixmap> pixmap;
+struct LRUFrame {
+ shared_ptr<Frame> frame;
size_t last_used;
};
mutex cache_mu;
-map<JPEGID, LRUPixmap> cache; // Under cache_mu.
+map<JPEGID, LRUFrame> cache; // Under cache_mu.
condition_variable any_pending_decodes;
deque<pair<JPEGID, JPEGFrameView *>> pending_decodes; // Under cache_mu.
atomic<size_t> event_counter{0};
+extern QGLWidget *global_share_widget;
+
+// TODO: Decode using VA-API if available.
+shared_ptr<Frame> decode_jpeg(const string &filename)
+{
+ shared_ptr<Frame> frame(new Frame);
+
+ jpeg_decompress_struct dinfo;
+ jpeg_error_mgr jerr;
+ dinfo.err = jpeg_std_error(&jerr);
+ jpeg_create_decompress(&dinfo);
+
+ FILE *fp = fopen(filename.c_str(), "rb");
+ if (fp == nullptr) {
+ perror(filename.c_str());
+ exit(1);
+ }
+ jpeg_stdio_src(&dinfo, fp);
+
+ jpeg_read_header(&dinfo, true);
+
+ if (dinfo.num_components != 3 ||
+ dinfo.comp_info[0].h_samp_factor != 2 ||
+ dinfo.comp_info[0].v_samp_factor != 2 ||
+ dinfo.comp_info[1].h_samp_factor != 1 ||
+ dinfo.comp_info[1].v_samp_factor != 2 ||
+ dinfo.comp_info[2].h_samp_factor != 1 ||
+ dinfo.comp_info[2].v_samp_factor != 2) {
+ fprintf(stderr, "Not 4:2:2 JPEG! (%d components, Y=%dx%d, Cb=%dx%d, Cr=%dx%d)\n",
+ dinfo.num_components,
+ dinfo.comp_info[0].h_samp_factor, dinfo.comp_info[0].v_samp_factor,
+ dinfo.comp_info[1].h_samp_factor, dinfo.comp_info[1].v_samp_factor,
+ dinfo.comp_info[2].h_samp_factor, dinfo.comp_info[2].v_samp_factor);
+ exit(1);
+ }
+ dinfo.raw_data_out = true;
+
+ jpeg_start_decompress(&dinfo);
+
+ frame->width = dinfo.output_width;
+ frame->height = dinfo.output_height;
+
+ unsigned chroma_width_blocks = (dinfo.output_width + 15) / 16;
+ unsigned width_blocks = chroma_width_blocks * 2;
+ unsigned height_blocks = (dinfo.output_height + 15) / 16;
+
+ // TODO: Decode into a PBO.
+ frame->y.reset(new uint8_t[width_blocks * (height_blocks * 2) * DCTSIZE2]);
+ frame->cb.reset(new uint8_t[chroma_width_blocks * (height_blocks * 2) * DCTSIZE2]);
+ frame->cr.reset(new uint8_t[chroma_width_blocks * (height_blocks * 2) * DCTSIZE2]);
+
+ JSAMPROW yptr[16], cbptr[16], crptr[16];
+ JSAMPARRAY data[3] = { yptr, cbptr, crptr };
+ for (unsigned y = 0; y < height_blocks; ++y) {
+ for (unsigned yy = 0; yy < DCTSIZE * 2; ++yy) {
+ yptr[yy] = frame->y.get() + (y * DCTSIZE * 2 + yy) * width_blocks * DCTSIZE;
+ cbptr[yy] = frame->cb.get() + (y * DCTSIZE * 2 + yy) * chroma_width_blocks * DCTSIZE;
+ crptr[yy] = frame->cr.get() + (y * DCTSIZE * 2 + yy) * chroma_width_blocks * DCTSIZE;
+ }
+
+ jpeg_read_raw_data(&dinfo, data, /*num_lines=*/16);
+ }
+
+ (void) jpeg_finish_decompress(&dinfo);
+ jpeg_destroy_decompress(&dinfo);
+ fclose(fp);
+
+ return frame;
+}
void prune_cache()
{
for ( ;; ) {
JPEGID id;
JPEGFrameView *dest;
- shared_ptr<QPixmap> pixmap;
+ shared_ptr<Frame> frame;
{
unique_lock<mutex> lock(cache_mu);
any_pending_decodes.wait(lock, [] {
auto it = cache.find(id);
if (it != cache.end()) {
- pixmap = it->second.pixmap;
+ frame = it->second.frame;
it->second.last_used = event_counter++;
}
}
- if (pixmap == nullptr) {
+ if (frame == nullptr) {
// Not found in the cache, so we need to do a decode or drop the request.
// Prune the queue if there are too many pending for this destination.
// TODO: Could we get starvation here?
continue;
}
- pixmap.reset(
- new QPixmap(QString::fromStdString(filename_for_frame(id.stream_idx, id.pts))));
+ frame = decode_jpeg(filename_for_frame(id.stream_idx, id.pts));
unique_lock<mutex> lock(cache_mu);
- cache[id] = LRUPixmap{ pixmap, event_counter++ };
+ cache[id] = LRUFrame{ frame, event_counter++ };
if (cache.size() > CACHE_SIZE) {
prune_cache();
}
}
- dest->setPixmap(pixmap);
+ dest->setDecodedFrame(frame);
}
}
JPEGFrameView::JPEGFrameView(QWidget *parent)
- : QGraphicsView(parent) {
- scene.addItem(&item);
- setScene(&scene);
- setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
- setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+ : QGLWidget(parent, global_share_widget) {
+}
+
+void JPEGFrameView::update_frame()
+{
+ unique_lock<mutex> lock(cache_mu);
+ pending_decodes.emplace_back(JPEGID{ stream_idx, pts }, this);
+ any_pending_decodes.notify_all();
+}
+
+ResourcePool *resource_pool = nullptr;
+
+void JPEGFrameView::initializeGL()
+{
+ glDisable(GL_BLEND);
+ glDisable(GL_DEPTH_TEST);
+ glDepthMask(GL_FALSE);
+ check_error();
static once_flag once;
call_once(once, [] {
+ CHECK(init_movit(MOVIT_SHADER_DIR, MOVIT_DEBUG_OFF));
+ resource_pool = new ResourcePool;
+
std::thread(&jpeg_decoder_thread).detach();
});
+
+ chain.reset(new EffectChain(1280, 720, resource_pool));
+ ImageFormat image_format;
+ image_format.color_space = COLORSPACE_sRGB;
+ image_format.gamma_curve = GAMMA_sRGB;
+ YCbCrFormat ycbcr_format;
+ ycbcr_format.luma_coefficients = YCBCR_REC_709;
+ ycbcr_format.full_range = false;
+ ycbcr_format.num_levels = 256;
+ ycbcr_format.chroma_subsampling_x = 2;
+ ycbcr_format.chroma_subsampling_y = 1;
+ ycbcr_format.cb_x_position = 0.0f; // H.264 -- _not_ JPEG, even though our input is MJPEG-encoded
+ ycbcr_format.cb_y_position = 0.5f; // Irrelevant.
+ ycbcr_format.cr_x_position = 0.0f;
+ ycbcr_format.cr_y_position = 0.5f;
+ ycbcr_input = (movit::YCbCrInput *)chain->add_input(new YCbCrInput(image_format, ycbcr_format, 1280, 720));
+
+ ImageFormat inout_format;
+ inout_format.color_space = COLORSPACE_sRGB;
+ inout_format.gamma_curve = GAMMA_sRGB;
+
+ check_error();
+ chain->add_output(inout_format, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED);
+ check_error();
+ chain->set_dither_bits(8);
+ check_error();
+ chain->finalize();
+ check_error();
}
-void JPEGFrameView::update_frame()
+void JPEGFrameView::resizeGL(int width, int height)
{
- unique_lock<mutex> lock(cache_mu);
- pending_decodes.emplace_back(JPEGID{ stream_idx, pts }, this);
- any_pending_decodes.notify_all();
+ check_error();
+ glViewport(0, 0, width, height);
+ check_error();
}
-void JPEGFrameView::resizeEvent(QResizeEvent *event)
+void JPEGFrameView::paintGL()
{
- fitInView(&item, Qt::KeepAspectRatio);
+ //glClearColor(0.0f, 1.0f, 0.0f, 1.0f);
+ //glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+ check_error();
+ chain->render_to_screen();
}
-void JPEGFrameView::setPixmap(std::shared_ptr<QPixmap> pixmap)
+void JPEGFrameView::setDecodedFrame(std::shared_ptr<Frame> frame)
{
- post_to_main_thread([this, pixmap] {
- item.setPixmap(*pixmap);
- fitInView(&item, Qt::KeepAspectRatio);
+ post_to_main_thread([this, frame] {
+ current_frame = frame;
+ int width_blocks = (frame->width + 15) / 16;
+ ycbcr_input->set_width(frame->width);
+ ycbcr_input->set_height(frame->height);
+ ycbcr_input->set_pixel_data(0, frame->y.get());
+ ycbcr_input->set_pixel_data(1, frame->cb.get());
+ ycbcr_input->set_pixel_data(2, frame->cr.get());
+ ycbcr_input->set_pitch(0, width_blocks * 16);
+ ycbcr_input->set_pitch(1, width_blocks * 8);
+ ycbcr_input->set_pitch(2, width_blocks * 8);
+ update();
});
}
projects / nageru / blobdiff