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Combine Play/Stop into toggle, add Previous Cassette button

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Merge the separate Stop and Play buttons into one slot that toggles
between play/stop and shows the corresponding icon. Use the freed
slot for a Previous Cassette button, mirroring Next Cassette.

Layout: [Volume] [Prev] [Rewind] [Play/Stop] [FF] [Next]

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Michael Smith 2026-02-13 14:38:17 +01:00
parent 2daf9f7955
commit a0f95c7252
2 changed files with 30 additions and 19 deletions
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6
docs/sdlamp2-fsd.md
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@ -43,6 +43,12 @@ This document specifies the functional requirements for an SDL2 based media play
## 6. Changelog
### 2026-02-13 — Combine Play/Stop, add Previous Cassette button
- **Play/Stop combined**: The separate Stop and Play buttons are merged into a single toggle button that shows the play icon (▶) when paused and the stop icon (■) when playing.
- **Previous Cassette**: A new "Previous Cassette" button is added at the left of the transport controls, mirroring "Next Cassette". Wraps from the first tape to the last.
- **New layout**: `[Volume] [Prev] [Rewind] [Play/Stop] [FF] [Next]` — same 6 focusable elements, same positions.
### 2026-02-13 — Start paused, fix next-tape autoplay, quiet joystick log
- **Start paused**: The player no longer autoplays on startup; it opens the last file at the saved position but waits for the user to press Play.

43
src/sdlamp2.c
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@ -57,15 +57,15 @@ static int current_file_index = 0;
/* --- Focus / navigation --- */
#define FOCUS_VOLUME 0
#define FOCUS_REWIND 1
#define FOCUS_STOP 2
#define FOCUS_PLAY 3
#define FOCUS_PREV 1
#define FOCUS_REWIND 2
#define FOCUS_PLAYSTOP 3
#define FOCUS_FF 4
#define FOCUS_NEXT 5
#define FOCUS_COUNT 6
static float volume = 0.5f;
static int focus_index = FOCUS_PLAY;
static int focus_index = FOCUS_PLAYSTOP;
static SDL_GameController* controller = NULL;
static SDL_Joystick* joystick = NULL;
static int debug_mode = 0;
@ -494,13 +494,22 @@ static void switch_file(int index) {
static void activate_focused_button(void) {
switch (focus_index) {
case FOCUS_PREV:
if (num_audio_files > 0) {
int prev = (current_file_index - 1 + num_audio_files) % num_audio_files;
switch_file(prev);
}
break;
case FOCUS_REWIND: {
double pos = get_current_seconds() - SEEK_SECONDS;
decoder_seek(pos < 0.0 ? 0.0 : pos);
break;
}
case FOCUS_STOP:
if (!paused) {
case FOCUS_PLAYSTOP:
if (paused && num_audio_files > 0) {
paused = SDL_FALSE;
SDL_PauseAudioDevice(audio_device, 0);
} else if (!paused) {
paused = SDL_TRUE;
SDL_PauseAudioDevice(audio_device, 1);
if (current_file[0]) {
@ -508,12 +517,6 @@ static void activate_focused_button(void) {
}
}
break;
case FOCUS_PLAY:
if (paused && num_audio_files > 0) {
paused = SDL_FALSE;
SDL_PauseAudioDevice(audio_device, 0);
}
break;
case FOCUS_FF: {
double pos = get_current_seconds() + SEEK_SECONDS;
double dur = get_duration_seconds();
@ -553,21 +556,22 @@ int main(int argc, char** argv) {
const SDL_Rect volume_bg = {25, 390, 30, 80};
/* Button positions (bottom of window, centered) */
const SDL_Rect rewind_btn = {80, 390, 80, 80};
const SDL_Rect stop_btn = {180, 390, 80, 80};
const SDL_Rect play_btn = {280, 390, 80, 80};
const SDL_Rect prev_btn = {80, 390, 80, 80};
const SDL_Rect rewind_btn = {180, 390, 80, 80};
const SDL_Rect playstop_btn = {280, 390, 80, 80};
const SDL_Rect ff_btn = {380, 390, 80, 80};
const SDL_Rect next_btn = {480, 390, 80, 80};
/* Array of focusable rects indexed by FOCUS_* constants */
const SDL_Rect* focus_rects[FOCUS_COUNT] = {&volume_bg, &rewind_btn, &stop_btn,
&play_btn, &ff_btn, &next_btn};
const SDL_Rect* focus_rects[FOCUS_COUNT] = {&volume_bg, &prev_btn, &rewind_btn,
&playstop_btn, &ff_btn, &next_btn};
/* Sprite sheet source rects */
const SDL_Rect rewind_sprite = {0, 0, 200, 200};
const SDL_Rect play_sprite = {220, 0, 200, 200};
const SDL_Rect ff_sprite = {440, 0, 200, 200};
const SDL_Rect stop_sprite = {0, 220, 200, 200};
const SDL_Rect prev_sprite = {440, 220, 200, 200}; /* same circle as next */
const SDL_Rect next_sprite = {440, 220, 200, 200};
/* Progress bar area */
@ -901,9 +905,10 @@ int main(int argc, char** argv) {
}
/* Buttons */
SDL_RenderCopy(renderer, controls_texture, &prev_sprite, &prev_btn);
SDL_RenderCopy(renderer, controls_texture, &rewind_sprite, &rewind_btn);
SDL_RenderCopy(renderer, controls_texture, &stop_sprite, &stop_btn);
SDL_RenderCopy(renderer, controls_texture, &play_sprite, &play_btn);
SDL_RenderCopy(renderer, controls_texture, paused ? &play_sprite : &stop_sprite,
&playstop_btn);
SDL_RenderCopy(renderer, controls_texture, &ff_sprite, &ff_btn);
SDL_RenderCopy(renderer, controls_texture, &next_sprite, &next_btn);