#include <jpeglib.h>
#include <stdint.h>
+#include <unistd.h>
#include <atomic>
#include <condition_variable>
#include <thread>
#include <utility>
+#include <QMouseEvent>
+#include <QScreen>
+
#include <movit/resource_pool.h>
#include <movit/init.h>
#include <movit/util.h>
#include "defs.h"
#include "post_to_main_thread.h"
+#include "vaapi_jpeg_decoder.h"
+#include "video_stream.h"
+#include "ycbcr_converter.h"
using namespace movit;
using namespace std;
-string filename_for_frame(unsigned stream_idx, int64_t pts);
-
-struct JPEGID {
- unsigned stream_idx;
- int64_t pts;
+// Just an arbitrary order for std::map.
+struct JPEGIDLexicalOrder
+{
+ bool operator() (const JPEGID &a, const JPEGID &b) const
+ {
+ if (a.stream_idx != b.stream_idx)
+ return a.stream_idx < b.stream_idx;
+ if (a.pts != b.pts)
+ return a.pts < b.pts;
+ return a.interpolated < b.interpolated;
+ }
};
-bool operator< (const JPEGID &a, const JPEGID &b) {
- return make_pair(a.stream_idx, a.pts) < make_pair(b.stream_idx, b.pts);
-}
struct LRUFrame {
shared_ptr<Frame> frame;
size_t last_used;
};
+thread JPEGFrameView::jpeg_decoder_thread;
mutex cache_mu;
-map<JPEGID, LRUFrame> cache; // Under cache_mu.
-condition_variable any_pending_decodes;
+map<JPEGID, LRUFrame, JPEGIDLexicalOrder> cache; // Under cache_mu.
+condition_variable any_pending_decodes, cache_updated;
deque<pair<JPEGID, JPEGFrameView *>> pending_decodes; // Under cache_mu.
atomic<size_t> event_counter{0};
extern QGLWidget *global_share_widget;
+extern atomic<bool> should_quit;
-// TODO: Decode using VA-API if available.
shared_ptr<Frame> decode_jpeg(const string &filename)
{
- shared_ptr<Frame> frame(new Frame);
+ shared_ptr<Frame> frame;
+ if (vaapi_jpeg_decoding_usable) {
+ frame = decode_jpeg_vaapi(filename);
+ if (frame != nullptr) {
+ return frame;
+ }
+ fprintf(stderr, "VA-API hardware decoding failed; falling back to software.\n");
+ }
+
+ frame.reset(new Frame);
jpeg_decompress_struct dinfo;
jpeg_error_mgr jerr;
}
}
-void jpeg_decoder_thread()
+shared_ptr<Frame> decode_jpeg_with_cache(JPEGID id, CacheMissBehavior cache_miss_behavior, bool *did_decode)
+{
+ *did_decode = false;
+ {
+ unique_lock<mutex> lock(cache_mu);
+ auto it = cache.find(id);
+ if (it != cache.end()) {
+ it->second.last_used = event_counter++;
+ return it->second.frame;
+ }
+ }
+
+ if (cache_miss_behavior == RETURN_NULLPTR_IF_NOT_IN_CACHE) {
+ return nullptr;
+ }
+
+ assert(!id.interpolated);
+ *did_decode = true;
+ shared_ptr<Frame> frame = decode_jpeg(filename_for_frame(id.stream_idx, id.pts));
+
+ unique_lock<mutex> lock(cache_mu);
+ cache[id] = LRUFrame{ frame, event_counter++ };
+
+ if (cache.size() > CACHE_SIZE) {
+ prune_cache();
+ }
+ return frame;
+}
+
+void jpeg_decoder_thread_func()
{
size_t num_decoded = 0, num_dropped = 0;
pthread_setname_np(pthread_self(), "JPEGDecoder");
- for ( ;; ) {
+ while (!should_quit.load()) {
JPEGID id;
JPEGFrameView *dest;
- shared_ptr<Frame> frame;
+ CacheMissBehavior cache_miss_behavior = DECODE_IF_NOT_IN_CACHE;
{
- unique_lock<mutex> lock(cache_mu);
+ unique_lock<mutex> lock(cache_mu); // TODO: Perhaps under another lock?
any_pending_decodes.wait(lock, [] {
- return !pending_decodes.empty();
+ return !pending_decodes.empty() || should_quit.load();
});
+ if (should_quit.load()) break;
id = pending_decodes.front().first;
dest = pending_decodes.front().second;
pending_decodes.pop_front();
- auto it = cache.find(id);
- if (it != cache.end()) {
- frame = it->second.frame;
- it->second.last_used = event_counter++;
- }
- }
-
- 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?
size_t num_pending = 0;
for (const pair<JPEGID, JPEGFrameView *> &decode : pending_decodes) {
if (decode.second == dest) {
}
}
if (num_pending > 3) {
- ++num_dropped;
- continue;
+ cache_miss_behavior = RETURN_NULLPTR_IF_NOT_IN_CACHE;
}
+ }
- frame = decode_jpeg(filename_for_frame(id.stream_idx, id.pts));
-
+ bool found_in_cache;
+ shared_ptr<Frame> frame;
+ if (id.interpolated) {
+ // Interpolated frames are never decoded by us,
+ // put directly into the cache from VideoStream.
unique_lock<mutex> lock(cache_mu);
- cache[id] = LRUFrame{ frame, event_counter++ };
+ cache_updated.wait(lock, [id] {
+ return cache.count(id) != 0 || should_quit.load();
+ });
+ if (should_quit.load()) break;
+ found_in_cache = true; // Don't count it as a decode.
- if (cache.size() > CACHE_SIZE) {
- prune_cache();
+ auto it = cache.find(id);
+ assert(it != cache.end());
+
+ it->second.last_used = event_counter++;
+ frame = it->second.frame;
+ if (frame == nullptr) {
+ // We inserted a nullptr as signal that the frame was never
+ // interpolated and that we should stop waiting.
+ // But don't let it linger in the cache anymore.
+ cache.erase(it);
}
+ } else {
+ frame = decode_jpeg_with_cache(id, cache_miss_behavior, &found_in_cache);
+ }
+
+ if (frame == nullptr) {
+ assert(id.interpolated || cache_miss_behavior == RETURN_NULLPTR_IF_NOT_IN_CACHE);
+ ++num_dropped;
+ continue;
+ }
+
+ if (!found_in_cache) {
++num_decoded;
if (num_decoded % 1000 == 0) {
fprintf(stderr, "Decoded %zu images, dropped %zu (%.2f%% dropped)\n",
}
}
+ // TODO: Could we get jitter between non-interpolated and interpolated frames here?
dest->setDecodedFrame(frame);
}
}
+void JPEGFrameView::shutdown()
+{
+ any_pending_decodes.notify_all();
+ jpeg_decoder_thread.join();
+}
+
JPEGFrameView::JPEGFrameView(QWidget *parent)
: QGLWidget(parent, global_share_widget) {
}
-void JPEGFrameView::update_frame()
+void JPEGFrameView::setFrame(unsigned stream_idx, int64_t pts, bool interpolated)
{
+ current_stream_idx = stream_idx;
+
unique_lock<mutex> lock(cache_mu);
- pending_decodes.emplace_back(JPEGID{ stream_idx, pts }, this);
+ pending_decodes.emplace_back(JPEGID{ stream_idx, pts, interpolated }, this);
any_pending_decodes.notify_all();
}
+void JPEGFrameView::insert_interpolated_frame(unsigned stream_idx, int64_t pts, shared_ptr<Frame> frame)
+{
+ JPEGID id{ stream_idx, pts, true };
+
+ // We rely on the frame not being evicted from the cache before
+ // jpeg_decoder_thread() sees it and can display it (otherwise,
+ // that thread would hang). With a default cache of 1000 elements,
+ // that would sound like a reasonable assumption.
+ unique_lock<mutex> lock(cache_mu);
+ cache[id] = LRUFrame{ std::move(frame), event_counter++ };
+ cache_updated.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();
+ jpeg_decoder_thread = std::thread(jpeg_decoder_thread_func);
});
- chain.reset(new EffectChain(1280, 720, resource_pool));
- ImageFormat image_format;
- image_format.color_space = COLORSPACE_sRGB;
- image_format.gamma_curve = GAMMA_sRGB;
- 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));
+ ycbcr_converter.reset(new YCbCrConverter(YCbCrConverter::OUTPUT_TO_RGBA, resource_pool));
ImageFormat inout_format;
- inout_format.color_space = COLORSPACE_sRGB;
- inout_format.gamma_curve = GAMMA_sRGB;
+ 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();
+ overlay_chain.reset(new EffectChain(overlay_base_width, overlay_base_height, resource_pool));
+ overlay_input = (movit::FlatInput *)overlay_chain->add_input(new FlatInput(inout_format, FORMAT_GRAYSCALE, GL_UNSIGNED_BYTE, overlay_base_width, overlay_base_height));
+
+ overlay_chain->add_output(inout_format, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED);
+ overlay_chain->finalize();
}
void JPEGFrameView::resizeGL(int width, int height)
check_error();
glViewport(0, 0, width, height);
check_error();
+
+ // Save these, as width() and height() will lie with DPI scaling.
+ gl_width = width;
+ gl_height = height;
}
void JPEGFrameView::paintGL()
{
+ glViewport(0, 0, gl_width, gl_height);
if (current_frame == nullptr) {
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
}
check_error();
- chain->render_to_screen();
+ current_chain->render_to_screen();
+
+ if (overlay_image != nullptr) {
+ if (overlay_input_needs_refresh) {
+ overlay_input->set_width(overlay_width);
+ overlay_input->set_height(overlay_height);
+ overlay_input->set_pixel_data(overlay_image->bits());
+ }
+ glViewport(gl_width - overlay_width, 0, overlay_width, overlay_height);
+ overlay_chain->render_to_screen();
+ }
}
void JPEGFrameView::setDecodedFrame(std::shared_ptr<Frame> frame)
{
post_to_main_thread([this, frame] {
current_frame = frame;
- ycbcr_format.chroma_subsampling_x = frame->chroma_subsampling_x;
- ycbcr_format.chroma_subsampling_y = frame->chroma_subsampling_y;
- ycbcr_input->change_ycbcr_format(ycbcr_format);
- 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, frame->pitch_y);
- ycbcr_input->set_pitch(1, frame->pitch_chroma);
- ycbcr_input->set_pitch(2, frame->pitch_chroma);
+ current_chain = ycbcr_converter->prepare_chain_for_conversion(frame);
update();
});
}
+
+void JPEGFrameView::mousePressEvent(QMouseEvent *event)
+{
+ if (event->type() == QEvent::MouseButtonPress && event->button() == Qt::LeftButton) {
+ emit clicked();
+ }
+}
+
+void JPEGFrameView::set_overlay(const string &text)
+{
+ if (text.empty()) {
+ overlay_image.reset();
+ return;
+ }
+
+ float dpr = QGuiApplication::primaryScreen()->devicePixelRatio();
+ overlay_width = lrint(overlay_base_width * dpr);
+ overlay_height = lrint(overlay_base_height * dpr);
+
+ overlay_image.reset(new QImage(overlay_width, overlay_height, QImage::Format_Grayscale8));
+ overlay_image->setDevicePixelRatio(dpr);
+ overlay_image->fill(0);
+ QPainter painter(overlay_image.get());
+
+ painter.setPen(Qt::white);
+ QFont font = painter.font();
+ font.setPointSize(12);
+ painter.setFont(font);
+
+ painter.drawText(QRectF(0, 0, overlay_base_width, overlay_base_height), Qt::AlignCenter, QString::fromStdString(text));
+
+ // Don't refresh immediately; we might not have an OpenGL context here.
+ overlay_input_needs_refresh = true;
+}
projects / nageru / blobdiff