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fix audio desync for realsies, stderr to log.txt

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This commit is contained in:
shweet
2026-03-10 00:36:21 -04:00
parent c11b404392
commit 1b5ba6b584
13 changed files with 347 additions and 21 deletions
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src/imgui/window/animation_preview.cpp
+119 -6
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@@ -1,9 +1,11 @@
#include "animation_preview.hpp"
#include <algorithm>
#include <cmath>
#include <chrono>
#include <filesystem>
#include <format>
#include <map>
#include <optional>
#include <ranges>
#include <system_error>
@@ -82,6 +84,51 @@ namespace anm2ed::imgui
directory.clear();
frames.clear();
}
bool render_audio_stream_generate(AudioStream& audioStream, std::map<int, anm2::Sound>& sounds,
const std::vector<int>& frameSoundIDs, int fps)
{
audioStream.stream.clear();
if (frameSoundIDs.empty() || fps <= 0) return true;
SDL_AudioSpec mixSpec = audioStream.spec;
mixSpec.format = SDL_AUDIO_F32;
auto* mixer = MIX_CreateMixer(&mixSpec);
if (!mixer) return false;
auto channels = std::max(mixSpec.channels, 1);
auto sampleRate = std::max(mixSpec.freq, 1);
auto framesPerStep = (double)sampleRate / (double)fps;
auto sampleFrameAccumulator = 0.0;
auto frameBuffer = std::vector<float>{};
for (auto soundID : frameSoundIDs)
{
if (soundID != -1 && sounds.contains(soundID)) sounds.at(soundID).audio.play(false, mixer);
sampleFrameAccumulator += framesPerStep;
auto sampleFramesToGenerate = (int)std::floor(sampleFrameAccumulator);
sampleFramesToGenerate = std::max(sampleFramesToGenerate, 1);
sampleFrameAccumulator -= (double)sampleFramesToGenerate;
frameBuffer.resize((std::size_t)sampleFramesToGenerate * (std::size_t)channels);
if (!MIX_Generate(mixer, frameBuffer.data(), (int)(frameBuffer.size() * sizeof(float))))
{
for (auto& [_, sound] : sounds)
sound.audio.track_detach(mixer);
MIX_DestroyMixer(mixer);
audioStream.stream.clear();
return false;
}
audioStream.stream.insert(audioStream.stream.end(), frameBuffer.begin(), frameBuffer.end());
}
for (auto& [_, sound] : sounds)
sound.audio.track_detach(mixer);
MIX_DestroyMixer(mixer);
return true;
}
}
AnimationPreview::AnimationPreview() : Canvas(vec2()) {}
@@ -106,6 +153,8 @@ namespace anm2ed::imgui
if (playback.time > end || playback.isFinished)
{
if (settings.timelineIsSound) audioStream.capture_end(mixer);
if (type == render::PNGS)
{
if (!renderTempFrames.empty())
@@ -185,7 +234,20 @@ namespace anm2ed::imgui
}
else
{
if (animation_render(ffmpegPath, path, renderTempFrames, audioStream, (render::Type)type, anm2.info.fps))
if (settings.timelineIsSound && type != render::GIF)
{
if (!render_audio_stream_generate(audioStream, anm2.content.sounds, renderFrameSoundIDs, anm2.info.fps))
{
toasts.push(localize.get(TOAST_EXPORT_RENDERED_ANIMATION_FAILED));
logger.error("Failed to generate deterministic render audio stream; exporting without audio.");
audioStream.stream.clear();
}
}
else
audioStream.stream.clear();
if (animation_render(ffmpegPath, path, renderTempFrames, renderTempFrameDurations, audioStream,
(render::Type)type, anm2.info.fps))
{
toasts.push(std::vformat(localize.get(TOAST_EXPORT_RENDERED_ANIMATION), std::make_format_args(pathString)));
logger.info(std::vformat(localize.get(TOAST_EXPORT_RENDERED_ANIMATION, anm2ed::ENGLISH),
@@ -204,9 +266,15 @@ namespace anm2ed::imgui
{
renderTempDirectory.clear();
renderTempFrames.clear();
renderTempFrameDurations.clear();
renderFrameSoundIDs.clear();
}
else
{
render_temp_cleanup(renderTempDirectory, renderTempFrames);
renderTempFrameDurations.clear();
renderFrameSoundIDs.clear();
}
if (settings.renderIsRawAnimation)
{
@@ -220,8 +288,6 @@ namespace anm2ed::imgui
isCheckerPanInitialized = false;
}
if (settings.timelineIsSound) audioStream.capture_end(mixer);
playback.isPlaying = false;
playback.isFinished = false;
manager.isRecording = false;
@@ -229,6 +295,28 @@ namespace anm2ed::imgui
}
else
{
if (settings.timelineIsSound && renderTempFrames.empty()) audioStream.capture_begin(mixer);
auto frameSoundID = -1;
if (settings.timelineIsSound && !anm2.content.sounds.empty())
{
if (auto animation = document.animation_get();
animation && animation->triggers.isVisible && (!settings.timelineIsOnlyShowLayers || manager.isRecording))
{
if (auto trigger = animation->triggers.frame_generate(playback.time, anm2::TRIGGER); trigger.isVisible)
{
if (!trigger.soundIDs.empty())
{
auto soundIndex = trigger.soundIDs.size() > 1
? (size_t)math::random_in_range(0.0f, (float)trigger.soundIDs.size())
: (size_t)0;
soundIndex = std::min(soundIndex, trigger.soundIDs.size() - 1);
auto soundID = trigger.soundIDs[soundIndex];
if (anm2.content.sounds.contains(soundID)) frameSoundID = soundID;
}
}
}
}
renderFrameSoundIDs.push_back(frameSoundID);
bind();
auto pixels = pixels_get();
@@ -237,6 +325,24 @@ namespace anm2ed::imgui
if (Texture::write_pixels_png(framePath, size, pixels.data()))
{
renderTempFrames.push_back(framePath);
auto nowCounter = SDL_GetPerformanceCounter();
auto counterFrequency = SDL_GetPerformanceFrequency();
auto fallbackDuration = 1.0 / (double)std::max(anm2.info.fps, 1);
if (renderTempFrames.size() == 1)
{
renderCaptureCounterPrev = nowCounter;
renderTempFrameDurations.push_back(fallbackDuration);
}
else
{
auto elapsedCounter = nowCounter - renderCaptureCounterPrev;
auto frameDuration = counterFrequency > 0 ? (double)elapsedCounter / (double)counterFrequency : 0.0;
frameDuration = std::max(frameDuration, 1.0 / 1000.0);
renderTempFrameDurations.back() = frameDuration;
renderTempFrameDurations.push_back(frameDuration);
renderCaptureCounterPrev = nowCounter;
}
}
else
{
@@ -244,6 +350,8 @@ namespace anm2ed::imgui
logger.error(std::vformat(localize.get(TOAST_EXPORT_RENDERED_ANIMATION_FAILED, anm2ed::ENGLISH),
std::make_format_args(pathString)));
if (type != render::PNGS) render_temp_cleanup(renderTempDirectory, renderTempFrames);
renderTempFrameDurations.clear();
renderFrameSoundIDs.clear();
playback.isPlaying = false;
playback.isFinished = false;
manager.isRecording = false;
@@ -258,7 +366,7 @@ namespace anm2ed::imgui
auto& isSound = settings.timelineIsSound;
auto& isOnlyShowLayers = settings.timelineIsOnlyShowLayers;
if (!anm2.content.sounds.empty() && isSound)
if (!manager.isRecording && !anm2.content.sounds.empty() && isSound)
{
if (auto animation = document.animation_get();
animation && animation->triggers.isVisible && (!isOnlyShowLayers || manager.isRecording))
@@ -474,8 +582,6 @@ namespace anm2ed::imgui
{
savedSettings = settings;
if (settings.timelineIsSound) audioStream.capture_begin(mixer);
if (settings.renderIsRawAnimation)
{
settings.previewBackgroundColor = vec4();
@@ -502,6 +608,9 @@ namespace anm2ed::imgui
manager.isRecordingStart = false;
manager.isRecording = true;
renderTempFrames.clear();
renderTempFrameDurations.clear();
renderFrameSoundIDs.clear();
renderCaptureCounterPrev = 0;
if (settings.renderType == render::PNGS)
{
renderTempDirectory = settings.renderPath;
@@ -1033,9 +1142,13 @@ namespace anm2ed::imgui
{
renderTempDirectory.clear();
renderTempFrames.clear();
renderTempFrameDurations.clear();
}
else
{
render_temp_cleanup(renderTempDirectory, renderTempFrames);
renderTempFrameDurations.clear();
}
pan = savedPan;
zoom = savedZoom;