Public_Skunkworks/singe
Public_Skunkworks/singe
1
0
Fork 0
Code Issues 12 Pull requests Projects Releases Packages Wiki Activity Actions

Framefiles can now contain videos without matching audio tracks.

Browse source
This commit is contained in:
Scott Duensing 2020-02-04 19:59:57 -06:00
parent c54101b14b
commit 57bb9c7703
1 changed files with 109 additions and 96 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

29
singe/videoPlayer.c
View file

@ -235,17 +235,17 @@ int32_t _loadVideoAndAudio(char *vFilename, char *aFilename, char *indexPath, bo
// Find audio track
v->audioTrack = FFMS_GetFirstTrackOfType(aIndex, FFMS_TYPE_AUDIO, &v->errInfo);
if (v->audioTrack < 0) utilDie("%s", v->errInfo.Buffer);
if (v->audioTrack >= 0) {
v->audioSource = FFMS_CreateAudioSource(aFilename, v->audioTrack, aIndex, FFMS_DELAY_FIRST_VIDEO_TRACK, &v->errInfo);
if (v->audioSource == NULL) utilDie("%s", v->errInfo.Buffer);
// Get audio properties
v->audioProps = FFMS_GetAudioProperties(v->audioSource);
}
// Indicies are now part of audioSource & videoSource, so release these
FFMS_DestroyIndex(vIndex);
vIndex = NULL;
if (aFilename != vFilename) {
if ((aFilename != vFilename) && (aIndex)) {
FFMS_DestroyIndex(aIndex);
}
aIndex = NULL;
@ -258,6 +258,8 @@ int32_t _loadVideoAndAudio(char *vFilename, char *aFilename, char *indexPath, bo
SDL_RenderSetLogicalSize(renderer, v->propFrame->EncodedWidth, v->propFrame->EncodedHeight);
}
// Do we have audio?
if (v->audioSource) {
// Determine audio format
switch (v->audioProps->SampleFormat) {
case FFMS_FMT_U8:
@ -308,6 +310,7 @@ int32_t _loadVideoAndAudio(char *vFilename, char *aFilename, char *indexPath, bo
// Register effect to provide video stream audio on this channel
Mix_RegisterEffect(v->audioSilenceChannel, _dequeueVideoAudio, NULL, v);
}
// Default volume, in percent
v->volumeLeft = 100;
@ -518,16 +521,17 @@ int32_t videoUnload(int32_t playerHandle) {
HASH_FIND_INT(_videoPlayerHash, &playerHandle, v);
if (!v) utilDie("No video player at index %d in videoStop.", playerHandle);
if (v->audioSource) {
Mix_HaltChannel(v->audioSilenceChannel);
Mix_UnregisterEffect(v->audioSilenceChannel, _dequeueVideoAudio);
Mix_FreeChunk(v->silenceChunk);
free(v->audioSilenceRaw);
SDL_FreeAudioStream(v->audioStream);
free(v->audioBuffer);
FFMS_DestroyAudioSource(v->audioSource);
FFMS_DestroyVideoSource(v->videoSource);
}
FFMS_DestroyVideoSource(v->videoSource);
SDL_DestroyTexture(v->videoTexture);
#pragma GCC diagnostic push
@ -552,7 +556,11 @@ int32_t videoUpdate(int32_t playerHandle, SDL_Texture **texture) {
if (!v) utilDie("No video player at index %d in videoUpdate.", playerHandle);
// Audio drift limit
if (v->audioSource) {
threshold = (v->audioProps->SampleRate / 2);
} else {
threshold = 99999;
}
// Handle video frames (and time)
if ((SDL_GetTicks() - v->lastTickTime >= v->frameDeltaTime) || (v->audioDelta > threshold) || v->resetTime) {
@ -567,6 +575,7 @@ int32_t videoUpdate(int32_t playerHandle, SDL_Texture **texture) {
result = v->frame;
v->framesPlayed++;
if (v->audioSource) {
// Did we trip the audio sync compensation?
if (v->audioDelta > threshold) {
// Adjust frame rate to try and match
@ -576,9 +585,9 @@ int32_t videoUpdate(int32_t playerHandle, SDL_Texture **texture) {
v->audioAdjustment -= 0.000001;
}
}
// Used to determine if we should play two frames rapidly to catch up to audio
v->audioDelta = labs(v->audioPosition - (int64_t)((double)v->timestamp * 0.001 * (double)v->audioProps->SampleRate));
}
//utilSay("D %ld T %ld A %f", v->audioDelta, threshold, v->audioAdjustment);
@ -598,17 +607,20 @@ int32_t videoUpdate(int32_t playerHandle, SDL_Texture **texture) {
}
if (v->resetTime) {
if (v->audioSource) {
SDL_AudioStreamClear(v->audioStream);
v->audioPosition = (int64_t)((double)v->timestamp * 0.001 * (double)v->audioProps->SampleRate);
v->audioDelta = 0;
}
v->lastTickTime = 0;
v->frameDeltaTime = 0;
v->audioPosition = (int64_t)((double)v->timestamp * 0.001 * (double)v->audioProps->SampleRate);
v->resetTime = false;
v->audioDelta = 0;
v->framesPlayed = 0;
}
}
// Handle audio samples
if (v->audioSource) {
if ((v->playing) && (SDL_AudioStreamAvailable(v->audioStream) < AUDIO_STREAM_LOW_WATERMARK) && (v->audioPosition < v->audioProps->NumSamples)) {
// Maximum samples we can read at a time
count = AUDIO_SAMPLE_PREREAD;
@ -625,6 +637,7 @@ int32_t videoUpdate(int32_t playerHandle, SDL_Texture **texture) {
v->audioPosition += count;
}
}
}
return result;
}