#include "jpeg_frame_view.h"
+#include <jpeglib.h>
#include <stdint.h>
+#include <unistd.h>
#include <atomic>
#include <condition_variable>
#include <mutex>
#include <thread>
#include <utility>
-#include <QGraphicsPixmapItem>
-#include <QPixmap>
+
+#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"
+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 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.
-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;
+
+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);
+
+ 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);
+ jpeg_destroy_decompress(&dinfo);
+ fclose(fp);
+
+ return frame;
+}
void prune_cache()
{
}
}
+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()
{
size_t num_decoded = 0, num_dropped = 0;
for ( ;; ) {
JPEGID id;
JPEGFrameView *dest;
- shared_ptr<QPixmap> pixmap;
+ 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();
});
dest = pending_decodes.front().second;
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) {
}
}
if (num_pending > 3) {
- ++num_dropped;
- continue;
+ cache_miss_behavior = RETURN_NULLPTR_IF_NOT_IN_CACHE;
}
+ }
- pixmap.reset(
- new QPixmap(QString::fromStdString(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] = LRUPixmap{ pixmap, event_counter++ };
+ cache_updated.wait(lock, [id] {
+ return cache.count(id) != 0;
+ });
+ found_in_cache = true; // Don't count it as a decode.
+
+ auto it = cache.find(id);
+ assert(it != cache.end());
- if (cache.size() > CACHE_SIZE) {
- prune_cache();
+ 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",
}
}
- dest->setPixmap(pixmap);
+ // TODO: Could we get jitter between non-interpolated and interpolated frames here?
+ 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::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, 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);
+ check_error();
static once_flag once;
call_once(once, [] {
+ resource_pool = new ResourcePool;
std::thread(&jpeg_decoder_thread).detach();
});
+
+ ImageFormat inout_format;
+ inout_format.color_space = COLORSPACE_sRGB;
+ inout_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;
+
+ // Planar Y'CbCr decoding chain.
+ planar_chain.reset(new EffectChain(1280, 720, resource_pool));
+ ycbcr_planar_input = (movit::YCbCrInput *)planar_chain->add_input(new YCbCrInput(inout_format, ycbcr_format, 1280, 720, YCBCR_INPUT_PLANAR));
+ planar_chain->add_output(inout_format, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED);
+ planar_chain->set_dither_bits(8);
+ planar_chain->finalize();
+
+ // Semiplanar Y'CbCr decoding chain (for images coming from VA-API).
+ semiplanar_chain.reset(new EffectChain(1280, 720, resource_pool));
+ ycbcr_semiplanar_input = (movit::YCbCrInput *)semiplanar_chain->add_input(new YCbCrInput(inout_format, ycbcr_format, 1280, 720, YCBCR_INPUT_SPLIT_Y_AND_CBCR));
+ semiplanar_chain->add_output(inout_format, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED);
+ semiplanar_chain->set_dither_bits(8);
+ semiplanar_chain->finalize();
+
+ 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();
+ if (current_frame->is_semiplanar) {
+ semiplanar_chain->render_to_screen();
+ } else {
+ planar_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)
+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;
+ ycbcr_format.chroma_subsampling_x = frame->chroma_subsampling_x;
+ ycbcr_format.chroma_subsampling_y = frame->chroma_subsampling_y;
+
+ if (frame->is_semiplanar) {
+ ycbcr_semiplanar_input->change_ycbcr_format(ycbcr_format);
+ ycbcr_semiplanar_input->set_width(frame->width);
+ ycbcr_semiplanar_input->set_height(frame->height);
+ ycbcr_semiplanar_input->set_pixel_data(0, frame->y.get());
+ ycbcr_semiplanar_input->set_pixel_data(1, frame->cbcr.get());
+ ycbcr_semiplanar_input->set_pitch(0, frame->pitch_y);
+ ycbcr_semiplanar_input->set_pitch(1, frame->pitch_chroma);
+ } else {
+ ycbcr_planar_input->change_ycbcr_format(ycbcr_format);
+ ycbcr_planar_input->set_width(frame->width);
+ ycbcr_planar_input->set_height(frame->height);
+ ycbcr_planar_input->set_pixel_data(0, frame->y.get());
+ ycbcr_planar_input->set_pixel_data(1, frame->cb.get());
+ ycbcr_planar_input->set_pixel_data(2, frame->cr.get());
+ ycbcr_planar_input->set_pitch(0, frame->pitch_y);
+ ycbcr_planar_input->set_pitch(1, frame->pitch_chroma);
+ ycbcr_planar_input->set_pitch(2, frame->pitch_chroma);
+ }
+ 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