#include "jpeg_frame_view.h"
-#include <stdint.h>
+#include "defs.h"
+#include "jpeg_destroyer.h"
+#include "post_to_main_thread.h"
+#include "video_stream.h"
+#include "ycbcr_converter.h"
+#include <QMouseEvent>
+#include <QScreen>
#include <atomic>
#include <condition_variable>
#include <deque>
+#include <jpeglib.h>
+#include <movit/init.h>
+#include <movit/resource_pool.h>
+#include <movit/util.h>
#include <mutex>
+#include <stdint.h>
#include <thread>
+#include <unistd.h>
#include <utility>
-#include <QGraphicsPixmapItem>
-#include <QPixmap>
-#include "defs.h"
-#include "post_to_main_thread.h"
+// Must come after the Qt stuff.
+#include "vaapi_jpeg_decoder.h"
+using namespace movit;
using namespace std;
-string filename_for_frame(unsigned stream_idx, int64_t pts);
+namespace {
-struct JPEGID {
- unsigned stream_idx;
- int64_t pts;
+// Just an arbitrary order for std::map.
+struct FrameOnDiskLexicalOrder
+{
+ bool operator() (const FrameOnDisk &a, const FrameOnDisk &b) const
+ {
+ if (a.pts != b.pts)
+ return a.pts < b.pts;
+ if (a.offset != b.offset)
+ return a.offset < b.offset;
+ if (a.filename_idx != b.filename_idx)
+ return a.filename_idx < b.filename_idx;
+ assert(a.size == b.size);
+ return false;
+ }
};
-bool operator< (const JPEGID &a, const JPEGID &b) {
- return make_pair(a.stream_idx, a.pts) < make_pair(b.stream_idx, b.pts);
+
+inline size_t frame_size(const Frame &frame)
+{
+ size_t y_size = frame.width * frame.height;
+ size_t cbcr_size = y_size / frame.chroma_subsampling_x / frame.chroma_subsampling_y;
+ return y_size + cbcr_size * 2;
}
-struct LRUPixmap {
- shared_ptr<QPixmap> pixmap;
+struct LRUFrame {
+ shared_ptr<Frame> frame;
size_t last_used;
};
+struct PendingDecode {
+ JPEGFrameView *destination;
+
+ // For actual decodes (only if frame below is nullptr).
+ FrameOnDisk primary, secondary;
+ float fade_alpha; // Irrelevant if secondary.stream_idx == -1.
+
+ // Already-decoded frames are also sent through PendingDecode,
+ // so that they get drawn in the right order. If frame is nullptr,
+ // it's a real decode.
+ shared_ptr<Frame> frame;
+};
+
+} // namespace
+
+thread JPEGFrameView::jpeg_decoder_thread;
mutex cache_mu;
-map<JPEGID, LRUPixmap> cache; // Under cache_mu.
+map<FrameOnDisk, LRUFrame, FrameOnDiskLexicalOrder> cache; // Under cache_mu.
+size_t cache_bytes_used = 0; // Under cache_mu.
condition_variable any_pending_decodes;
-deque<pair<JPEGID, JPEGFrameView *>> pending_decodes; // Under cache_mu.
+deque<PendingDecode> pending_decodes; // Under cache_mu.
atomic<size_t> event_counter{0};
+extern QGLWidget *global_share_widget;
+extern atomic<bool> should_quit;
+
+shared_ptr<Frame> decode_jpeg(const string &filename)
+{
+ 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;
+ dinfo.err = jpeg_std_error(&jerr);
+ jpeg_create_decompress(&dinfo);
+ JPEGDestroyer destroy_dinfo(&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) {
+ fprintf(stderr, "Not a color 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);
+ }
+ if (dinfo.comp_info[0].h_samp_factor != dinfo.max_h_samp_factor ||
+ dinfo.comp_info[0].v_samp_factor != dinfo.max_v_samp_factor || // Y' must not be subsampled.
+ dinfo.comp_info[1].h_samp_factor != dinfo.comp_info[2].h_samp_factor ||
+ dinfo.comp_info[1].v_samp_factor != dinfo.comp_info[2].v_samp_factor || // Cb and Cr must be identically subsampled.
+ (dinfo.max_h_samp_factor % dinfo.comp_info[1].h_samp_factor) != 0 ||
+ (dinfo.max_v_samp_factor % dinfo.comp_info[1].v_samp_factor) != 0) { // No 2:3 subsampling or other weirdness.
+ fprintf(stderr, "Unsupported subsampling scheme. (Y=%dx%d, Cb=%dx%d, Cr=%dx%d)\n",
+ 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;
+ frame->chroma_subsampling_x = dinfo.max_h_samp_factor / dinfo.comp_info[1].h_samp_factor;
+ frame->chroma_subsampling_y = dinfo.max_v_samp_factor / dinfo.comp_info[1].v_samp_factor;
+
+ unsigned h_mcu_size = DCTSIZE * dinfo.max_h_samp_factor;
+ unsigned v_mcu_size = DCTSIZE * dinfo.max_v_samp_factor;
+ unsigned mcu_width_blocks = (dinfo.output_width + h_mcu_size - 1) / h_mcu_size;
+ unsigned mcu_height_blocks = (dinfo.output_height + v_mcu_size - 1) / v_mcu_size;
+
+ unsigned luma_width_blocks = mcu_width_blocks * dinfo.comp_info[0].h_samp_factor;
+ unsigned chroma_width_blocks = mcu_width_blocks * dinfo.comp_info[1].h_samp_factor;
+ unsigned luma_height_blocks = mcu_height_blocks * dinfo.comp_info[0].v_samp_factor;
+ unsigned chroma_height_blocks = mcu_height_blocks * dinfo.comp_info[1].v_samp_factor;
+
+ // TODO: Decode into a PBO.
+ frame->y.reset(new uint8_t[luma_width_blocks * luma_height_blocks * DCTSIZE2]);
+ frame->cb.reset(new uint8_t[chroma_width_blocks * chroma_height_blocks * DCTSIZE2]);
+ frame->cr.reset(new uint8_t[chroma_width_blocks * chroma_height_blocks * DCTSIZE2]);
+ frame->pitch_y = luma_width_blocks * DCTSIZE;
+ frame->pitch_chroma = chroma_width_blocks * DCTSIZE;
+
+ JSAMPROW yptr[v_mcu_size], cbptr[v_mcu_size], crptr[v_mcu_size];
+ JSAMPARRAY data[3] = { yptr, cbptr, crptr };
+ for (unsigned y = 0; y < mcu_height_blocks; ++y) {
+ // NOTE: The last elements of cbptr/crptr will be unused for vertically subsampled chroma.
+ for (unsigned yy = 0; yy < v_mcu_size; ++yy) {
+ yptr[yy] = frame->y.get() + (y * DCTSIZE * dinfo.max_v_samp_factor + yy) * frame->pitch_y;
+ cbptr[yy] = frame->cb.get() + (y * DCTSIZE * dinfo.comp_info[1].v_samp_factor + yy) * frame->pitch_chroma;
+ crptr[yy] = frame->cr.get() + (y * DCTSIZE * dinfo.comp_info[1].v_samp_factor + yy) * frame->pitch_chroma;
+ }
+
+ jpeg_read_raw_data(&dinfo, data, v_mcu_size);
+ }
+
+ (void)jpeg_finish_decompress(&dinfo);
+ fclose(fp);
+
+ return frame;
+}
void prune_cache()
{
// Assumes cache_mu is held.
- vector<size_t> lru_timestamps;
+ int64_t bytes_still_to_remove = cache_bytes_used - (size_t(CACHE_SIZE_MB) * 1024 * 1024) * 9 / 10;
+ if (bytes_still_to_remove <= 0) return;
+
+ vector<pair<size_t, size_t>> lru_timestamps_and_size;
for (const auto &key_and_value : cache) {
- lru_timestamps.push_back(key_and_value.second.last_used);
+ lru_timestamps_and_size.emplace_back(
+ key_and_value.second.last_used,
+ frame_size(*key_and_value.second.frame));
+ }
+ sort(lru_timestamps_and_size.begin(), lru_timestamps_and_size.end());
+
+ // Remove the oldest ones until we are below 90% of the cache used.
+ size_t lru_cutoff_point = 0;
+ for (const pair<size_t, size_t> &it : lru_timestamps_and_size) {
+ lru_cutoff_point = it.first;
+ bytes_still_to_remove -= it.second;
+ if (bytes_still_to_remove <= 0) break;
}
- size_t cutoff_point = CACHE_SIZE / 10; // Prune away the 10% oldest ones.
- nth_element(lru_timestamps.begin(), lru_timestamps.begin() + cutoff_point, lru_timestamps.end());
- size_t must_be_used_after = lru_timestamps[cutoff_point];
for (auto it = cache.begin(); it != cache.end(); ) {
- if (it->second.last_used < must_be_used_after) {
+ if (it->second.last_used <= lru_cutoff_point) {
+ cache_bytes_used -= frame_size(*it->second.frame);
it = cache.erase(it);
} else {
++it;
}
}
-void jpeg_decoder_thread()
+shared_ptr<Frame> decode_jpeg_with_cache(FrameOnDisk frame_spec, CacheMissBehavior cache_miss_behavior, FrameReader *frame_reader, bool *did_decode)
{
+ *did_decode = false;
+ {
+ unique_lock<mutex> lock(cache_mu);
+ auto it = cache.find(frame_spec);
+ 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;
+ }
+
+ *did_decode = true;
+ shared_ptr<Frame> frame = decode_jpeg(frame_reader->read_frame(frame_spec));
+
+ unique_lock<mutex> lock(cache_mu);
+ cache_bytes_used += frame_size(*frame);
+ cache[frame_spec] = LRUFrame{ frame, event_counter++ };
+
+ if (cache_bytes_used > size_t(CACHE_SIZE_MB) * 1024 * 1024) {
+ prune_cache();
+ }
+ return frame;
+}
+
+void JPEGFrameView::jpeg_decoder_thread_func()
+{
+ size_t num_decoded = 0, num_dropped = 0;
+
pthread_setname_np(pthread_self(), "JPEGDecoder");
- for ( ;; ) {
- JPEGID id;
- JPEGFrameView *dest;
- shared_ptr<QPixmap> pixmap;
+ while (!should_quit.load()) {
+ PendingDecode decode;
+ 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();
});
- id = pending_decodes.front().first;
- dest = pending_decodes.front().second;
+ if (should_quit.load())
+ break;
+ decode = pending_decodes.front();
pending_decodes.pop_front();
- auto it = cache.find(id);
- if (it != cache.end()) {
- pixmap = it->second.pixmap;
- it->second.last_used = event_counter++;
- }
- }
-
- if (pixmap == 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) {
+ for (const PendingDecode &other_decode : pending_decodes) {
+ if (other_decode.destination == decode.destination) {
++num_pending;
}
}
if (num_pending > 3) {
+ cache_miss_behavior = RETURN_NULLPTR_IF_NOT_IN_CACHE;
+ }
+ }
+
+ if (decode.frame != nullptr) {
+ // Already decoded, so just show it.
+ decode.destination->setDecodedFrame(decode.frame, nullptr, 1.0f);
+ continue;
+ }
+
+ shared_ptr<Frame> primary_frame, secondary_frame;
+ bool drop = false;
+ for (int subframe_idx = 0; subframe_idx < 2; ++subframe_idx) {
+ const FrameOnDisk &frame_spec = (subframe_idx == 0 ? decode.primary : decode.secondary);
+ if (frame_spec.pts == -1) {
+ // No secondary frame.
continue;
}
- pixmap.reset(
- new QPixmap(QString::fromStdString(filename_for_frame(id.stream_idx, id.pts))));
+ bool found_in_cache;
+ shared_ptr<Frame> frame = decode_jpeg_with_cache(frame_spec, cache_miss_behavior, &decode.destination->frame_reader, &found_in_cache);
- unique_lock<mutex> lock(cache_mu);
- cache[id] = LRUPixmap{ pixmap, event_counter++ };
+ if (frame == nullptr) {
+ assert(cache_miss_behavior == RETURN_NULLPTR_IF_NOT_IN_CACHE);
+ drop = true;
+ break;
+ }
- if (cache.size() > CACHE_SIZE) {
- prune_cache();
+ if (!found_in_cache) {
+ ++num_decoded;
+ if (num_decoded % 1000 == 0) {
+ fprintf(stderr, "Decoded %zu images, dropped %zu (%.2f%% dropped)\n",
+ num_decoded, num_dropped, (100.0 * num_dropped) / (num_decoded + num_dropped));
+ }
}
+ if (subframe_idx == 0) {
+ primary_frame = std::move(frame);
+ } else {
+ secondary_frame = std::move(frame);
+ }
+ }
+ if (drop) {
+ ++num_dropped;
+ continue;
}
- dest->setPixmap(pixmap);
+ // TODO: Could we get jitter between non-interpolated and interpolated frames here?
+ decode.destination->setDecodedFrame(primary_frame, secondary_frame, decode.fade_alpha);
}
}
+void JPEGFrameView::shutdown()
+{
+ any_pending_decodes.notify_all();
+ jpeg_decoder_thread.join();
+}
+
JPEGFrameView::JPEGFrameView(QWidget *parent)
- : QGraphicsView(parent) {
- scene.addItem(&item);
- setScene(&scene);
- setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
- setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+ : QGLWidget(parent, global_share_widget)
+{
+}
+
+void JPEGFrameView::setFrame(unsigned stream_idx, FrameOnDisk frame, FrameOnDisk secondary_frame, float fade_alpha)
+{
+ current_stream_idx = stream_idx; // TODO: Does this interact with fades?
+
+ unique_lock<mutex> lock(cache_mu);
+ PendingDecode decode;
+ decode.primary = frame;
+ decode.secondary = secondary_frame;
+ decode.fade_alpha = fade_alpha;
+ decode.destination = this;
+ pending_decodes.push_back(decode);
+ any_pending_decodes.notify_all();
+}
+
+void JPEGFrameView::setFrame(shared_ptr<Frame> frame)
+{
+ unique_lock<mutex> lock(cache_mu);
+ PendingDecode decode;
+ decode.frame = std::move(frame);
+ decode.destination = this;
+ pending_decodes.push_back(decode);
+ any_pending_decodes.notify_all();
+}
+
+ResourcePool *resource_pool = nullptr;
+
+void JPEGFrameView::initializeGL()
+{
+ glDisable(GL_BLEND);
+ glDisable(GL_DEPTH_TEST);
+ check_error();
static once_flag once;
call_once(once, [] {
- std::thread(&jpeg_decoder_thread).detach();
+ resource_pool = new ResourcePool;
+ jpeg_decoder_thread = std::thread(jpeg_decoder_thread_func);
});
+
+ 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;
+
+ 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::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();
+
+ // Save these, as width() and height() will lie with DPI scaling.
+ gl_width = width;
+ gl_height = height;
}
-void JPEGFrameView::resizeEvent(QResizeEvent *event)
+void JPEGFrameView::paintGL()
{
- fitInView(&item, Qt::KeepAspectRatio);
+ 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);
+ return;
+ }
+
+ check_error();
+ 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::setPixmap(std::shared_ptr<QPixmap> pixmap)
+namespace {
+
+} // namespace
+
+void JPEGFrameView::setDecodedFrame(shared_ptr<Frame> frame, shared_ptr<Frame> secondary_frame, float fade_alpha)
{
- post_to_main_thread([this, pixmap] {
- item.setPixmap(*pixmap);
- fitInView(&item, Qt::KeepAspectRatio);
+ post_to_main_thread([this, frame, secondary_frame, fade_alpha] {
+ current_frame = frame;
+ current_secondary_frame = secondary_frame;
+
+ if (secondary_frame != nullptr) {
+ current_chain = ycbcr_converter->prepare_chain_for_fade(frame, secondary_frame, fade_alpha);
+ } else {
+ 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