mirror of
https://github.com/eried/portapack-mayhem.git
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Analog tv app (#334)
* Analog TV app (PAL) * Icon on main menu * Analog TV should be yellow Works for PAL only know, it would be nice to add NTSC in the future, or some customizable sync
This commit is contained in:
Erwin Ried
GitHub
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40531e9230
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e43f814861
14 changed files with 1410 additions and 0 deletions
251
firmware/application/ui/ui_tv.cpp
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251
firmware/application/ui/ui_tv.cpp
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/*
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* Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
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* Copyright (C) 2020 Shao
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*
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* This file is part of PortaPack.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#include "ui_tv.hpp"
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#include "spectrum_color_lut.hpp"
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#include "portapack.hpp"
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using namespace portapack;
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#include "baseband_api.hpp"
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#include "string_format.hpp"
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#include <cmath>
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#include <array>
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namespace ui {
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namespace tv {
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/* TimeScopeView******************************************************/
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TimeScopeView::TimeScopeView(
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const Rect parent_rect
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) : View { parent_rect }
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{
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set_focusable(true);
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add_children({
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//&labels,
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//&field_frequency,
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&waveform
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});
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/*field_frequency.on_change = [this](int32_t) {
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set_dirty();
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};
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field_frequency.set_value(10);*/
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}
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void TimeScopeView::paint(Painter& painter) {
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const auto r = screen_rect();
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painter.fill_rectangle(r, Color::black());
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// Cursor
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/*
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const Rect r_cursor {
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field_frequency.value() / (48000 / 240), r.bottom() - 32 - cursor_band_height,
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1, cursor_band_height
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};
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painter.fill_rectangle(
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r_cursor,
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Color::red()
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);*/
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}
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void TimeScopeView::on_audio_spectrum(const AudioSpectrum* spectrum) {
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for (size_t i = 0; i < spectrum->db.size(); i++)
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audio_spectrum[i] = ((int16_t)spectrum->db[i] - 127) * 256;
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waveform.set_dirty();
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}
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/* TVView *********************************************************/
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void TVView::on_show() {
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clear();
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const auto screen_r = screen_rect();
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display.scroll_set_area(screen_r.top(), screen_r.bottom());
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}
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void TVView::on_hide() {
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/* TODO: Clear region to eliminate brief flash of content at un-shifted
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* position?
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*/
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display.scroll_disable();
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}
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void TVView::paint(Painter& painter) {
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// Do nothing.
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(void)painter;
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}
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void TVView::on_adjust_xcorr(uint8_t xcorr){
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x_correction = xcorr;
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}
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void TVView::on_channel_spectrum(
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const ChannelSpectrum& spectrum
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) {
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//portapack has limitations
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// 1.screen resolution (less than 240x320) 2.samples each call back (128 or 256)
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// 3.memory size (for ui::Color, the buffer size
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//spectrum.db[i] is 256 long
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//768x625 ->128x625 ->128x312 -> 128x104
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//originally @6MHz sample rate, the PAL should be 768x625
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//I reduced sample rate to 2MHz(3 times less samples), then calculate mag (effectively decimate by 2)
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//the resolution is now changed to 128x625. The total decimation factor is 6, which changes how many samples in a line
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//However 625 is too large for the screen, also interlaced scanning is harder to realize in portapack than normal computer.
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//So I decided to simply drop half of the lines, once y is larger than 625/2=312.5 or 312, I recognize it as a new frame.
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//then the resolution is changed to 128x312
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//128x312 is now able to put into a 240x320 screen, but the buffer for a whole frame is 128x312=39936, which is too large
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//according to my test, I can only make a buffer with a length of 13312 of type ui::Color. which is 1/3 of what I wanted.
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//So now the resolution is changed to 128x104, the height is shrinked to 1/3 of the original height.
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//I was expecting to see 1/3 height of original video.
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//Look how nice is that! I am now able to meet the requirements of 1 and 3 for portapack. Also the length of a line is 128
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//Each call back gives me 256 samples which is exactly 2 lines. What a coincidence!
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//After some experiment, I did some improvements.
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//1.I found that instead of 1/3 of the frame is shown, I got 3 whole frames shrinked into one window.
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//So I made the height twice simply by painting 2 identical lines in the place of original lines
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//2.I found sometimes there is an horizontal offset, so I added x_correction to move the frame back to center manually
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//3.I changed video_buffer's type, from ui::Color to uint_8, since I don't need 3 digit to represent a grey scale value.
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//I was hoping that by doing this, I can have a longer buffer like 39936, then the frame will looks better vertically
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//however this is useless until now.
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for(size_t i=0; i<256; i++)
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{
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//video_buffer[i+count*256] = spectrum_rgb4_lut[spectrum.db[i]];
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video_buffer_int[i+count*256] = 255 - spectrum.db[i];
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}
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count = count + 1;
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if (count == 52 -1)
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{
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ui::Color line_buffer[128];
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Coord line;
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uint32_t bmp_px;
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/*for (line = 0; line < 104; line++)
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{
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for (bmp_px = 0; bmp_px < 128; bmp_px++)
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{
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//line_buffer[bmp_px] = video_buffer[bmp_px+line*128];
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line_buffer[bmp_px] = spectrum_rgb4_lut[video_buffer_int[bmp_px+line*128 + x_correction]];
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}
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display.render_line({ 0, line + 100 }, 128, line_buffer);
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}*/
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for (line = 0; line < 208; line=line+2)
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{
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for (bmp_px = 0; bmp_px < 128; bmp_px++)
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{
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//line_buffer[bmp_px] = video_buffer[bmp_px+line*128];
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line_buffer[bmp_px] = spectrum_rgb4_lut[video_buffer_int[bmp_px+line/2*128 + x_correction]];
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}
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display.render_line({ 0, line + 100 }, 128, line_buffer);
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display.render_line({ 0, line + 101 }, 128, line_buffer);
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}
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count = 0;
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}
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}
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void TVView::clear() {
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display.fill_rectangle(
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screen_rect(),
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Color::black()
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);
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}
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/* TVWidget *******************************************************/
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TVWidget::TVWidget(const bool cursor) {
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add_children({
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&tv_view,
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&field_xcorr
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});
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field_xcorr.set_value(10);
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}
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void TVWidget::on_show() {
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baseband::spectrum_streaming_start();
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}
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void TVWidget::on_hide() {
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baseband::spectrum_streaming_stop();
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}
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void TVWidget::show_audio_spectrum_view(const bool show) {
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if ((audio_spectrum_view && show) || (!audio_spectrum_view && !show)) return;
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if (show) {
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audio_spectrum_view = std::make_unique<TimeScopeView>(audio_spectrum_view_rect);
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add_child(audio_spectrum_view.get());
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update_widgets_rect();
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} else {
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audio_spectrum_update = false;
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remove_child(audio_spectrum_view.get());
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audio_spectrum_view.reset();
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update_widgets_rect();
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}
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}
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void TVWidget::update_widgets_rect() {
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if (audio_spectrum_view) {
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tv_view.set_parent_rect(tv_reduced_rect);
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} else {
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tv_view.set_parent_rect(tv_normal_rect);
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}
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tv_view.on_show();
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}
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void TVWidget::set_parent_rect(const Rect new_parent_rect) {
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View::set_parent_rect(new_parent_rect);
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tv_normal_rect = { 0, scale_height, new_parent_rect.width(), new_parent_rect.height() - scale_height};
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tv_reduced_rect = { 0, audio_spectrum_height + scale_height, new_parent_rect.width(), new_parent_rect.height() - scale_height - audio_spectrum_height };
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update_widgets_rect();
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}
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void TVWidget::paint(Painter& painter) {
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// TODO:
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(void)painter;
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}
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void TVWidget::on_channel_spectrum(const ChannelSpectrum& spectrum) {
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tv_view.on_channel_spectrum(spectrum);
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tv_view.on_adjust_xcorr(field_xcorr.value());
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sampling_rate = spectrum.sampling_rate;
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}
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void TVWidget::on_audio_spectrum() {
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audio_spectrum_view->on_audio_spectrum(audio_spectrum_data);
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}
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} /* namespace tv */
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} /* namespace ui */
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176
firmware/application/ui/ui_tv.hpp
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176
firmware/application/ui/ui_tv.hpp
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@ -0,0 +1,176 @@
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/*
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* Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
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* Copyright (C) 2020 Shao
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*
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* This file is part of PortaPack.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __UI_TV_H__
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#define __UI_TV_H__
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#include "ui.hpp"
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#include "ui_widget.hpp"
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#include "event_m0.hpp"
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#include "message.hpp"
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#include <cstdint>
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#include <cstddef>
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namespace ui {
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namespace tv {
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class TimeScopeView : public View {
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public:
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TimeScopeView(const Rect parent_rect);
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void paint(Painter& painter) override;
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void on_audio_spectrum(const AudioSpectrum* spectrum);
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private:
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static constexpr int cursor_band_height = 4;
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int16_t audio_spectrum[128] { 0 };
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/*Labels labels {
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{ { 6 * 8, 0 * 16 }, "Hz", Color::light_grey() }
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};*/
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/*
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NumberField field_frequency {
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{ 0 * 8, 0 * 16 },
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5,
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{ 0, 48000 },
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48000 / 240,
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' '
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};*/
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Waveform waveform {
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{ 0, 1 * 16 + cursor_band_height, 30 * 8, 2 * 16 },
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audio_spectrum,
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128,
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0,
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false,
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Color::white()
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};
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};
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class TVView : public Widget {
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public:
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void on_show() override;
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void on_hide() override;
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void paint(Painter& painter) override;
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void on_channel_spectrum(const ChannelSpectrum& spectrum);
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void on_adjust_xcorr(uint8_t xcorr);
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//ui::Color video_buffer[13312];
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uint8_t video_buffer_int[13312+128] { 0 }; //128 is for the over length caused by x_correction
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uint32_t count=0;
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uint8_t x_correction=0;
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private:
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void clear();
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};
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class TVWidget : public View {
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public:
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std::function<void(int32_t offset)> on_select { };
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TVWidget(const bool cursor = false);
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TVWidget(const TVWidget&) = delete;
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TVWidget(TVWidget&&) = delete;
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TVWidget& operator=(const TVWidget&) = delete;
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TVWidget& operator=(TVWidget&&) = delete;
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void on_show() override;
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void on_hide() override;
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void set_parent_rect(const Rect new_parent_rect) override;
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void show_audio_spectrum_view(const bool show);
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void paint(Painter& painter) override;
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NumberField field_xcorr {
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{ 0 * 8, 0 * 16 },
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5,
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{ 0, 128 },
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1,
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' '
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};
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private:
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void update_widgets_rect();
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const Rect audio_spectrum_view_rect { 0 * 8, 0 * 16, 30 * 8, 2 * 16 + 20 };
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static constexpr Dim audio_spectrum_height = 16 * 2 + 20;
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static constexpr Dim scale_height = 20;
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TVView tv_view { };
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ChannelSpectrumFIFO* channel_fifo { nullptr };
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AudioSpectrum* audio_spectrum_data { nullptr };
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bool audio_spectrum_update { false };
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std::unique_ptr<TimeScopeView> audio_spectrum_view { };
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int sampling_rate { 0 };
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int32_t cursor_position { 0 };
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ui::Rect tv_normal_rect { };
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ui::Rect tv_reduced_rect { };
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MessageHandlerRegistration message_handler_channel_spectrum_config {
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Message::ID::ChannelSpectrumConfig,
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[this](const Message* const p) {
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const auto message = *reinterpret_cast<const ChannelSpectrumConfigMessage*>(p);
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this->channel_fifo = message.fifo;
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}
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};
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MessageHandlerRegistration message_handler_audio_spectrum {
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Message::ID::AudioSpectrum,
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[this](const Message* const p) {
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const auto message = *reinterpret_cast<const AudioSpectrumMessage*>(p);
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this->audio_spectrum_data = message.data;
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this->audio_spectrum_update = true;
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}
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};
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MessageHandlerRegistration message_handler_frame_sync {
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Message::ID::DisplayFrameSync,
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[this](const Message* const) {
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if( this->channel_fifo ) {
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ChannelSpectrum channel_spectrum;
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while( channel_fifo->out(channel_spectrum) ) {
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this->on_channel_spectrum(channel_spectrum);
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}
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}
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if (this->audio_spectrum_update) {
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this->audio_spectrum_update = false;
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this->on_audio_spectrum();
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}
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}
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};
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void on_channel_spectrum(const ChannelSpectrum& spectrum);
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void on_audio_spectrum();
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};
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} /* namespace tv */
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} /* namespace ui */
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#endif/*__UI_TV_H__*/
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