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Fix seeking issues in winamp

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bnnm 2020-08-12 17:40:47 +02:00
parent 67c9854a82
commit 36b9e8a280
1 changed files with 33 additions and 41 deletions
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70
winamp/in_vgmstream.c
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@ -1316,34 +1316,29 @@ void winamp_EQSet(int on, char data[10], int preamp) {
/*****************************************************************************/
/* MAIN DECODE (some used in extended part too, so avoid globals) */
static void setup_seek(winamp_state_t* state, int32_t max_samples, int play_forever) {
/* adjust seeking past file, can happen using the right (->) key
* (should be done here and not in SetOutputTime due to threads/race conditions) */
if (state->seek_sample > max_samples && !play_forever) {
state->seek_sample = max_samples;
}
#if 0
/* reset if we need to seek backwards (causes funny cursor jumps though) */
if (state->seek_sample < state->decode_pos_samples) {
state->decode_pos_samples = 0;
state->decode_pos_ms = 0;
}
/* seek done */
else if (state->decode_pos_samples >= state->seek_sample) {
state->seek_sample = -1;
}
#endif
}
static void do_seek(winamp_state_t* state, VGMSTREAM* vgmstream) {
/* could divide in N seeks (from pos) for slower files so cursor moves, but doesn't seem too necessary */
seek_vgmstream(vgmstream, state->seek_sample);
int play_forever = vgmstream_get_play_forever(vgmstream);
int seek_sample = state->seek_sample; /* local due to threads/race conditions changing state->seek_sample elsewhere */
/* discard decoded samples and keep seeking */
state->decode_pos_samples = state->seek_sample;
/* ignore seeking past file, can happen using the right (->) key, ok if playing forever */
if (state->seek_sample > state->length_samples && !play_forever) {
state->seek_sample = -1;
//state->seek_sample = state->length_samples;
//seek_sample = state->length_samples;
state->decode_pos_samples = state->length_samples;
state->decode_pos_ms = state->decode_pos_samples * 1000LL / vgmstream->sample_rate;
return;
}
/* could divide in N seeks (from pos) for slower files so cursor moves, but doesn't seem too necessary */
seek_vgmstream(vgmstream, seek_sample);
state->decode_pos_samples = seek_sample;
state->decode_pos_ms = state->decode_pos_samples * 1000LL / vgmstream->sample_rate;
/* different sample: other seek may have been requested during seek_vgmstream */
if (state->seek_sample == seek_sample)
state->seek_sample = -1;
}
@ -1365,21 +1360,19 @@ static void apply_gain(winamp_state_t* state, int samples_to_do) {
/* the decode thread */
DWORD WINAPI __stdcall decode(void *arg) {
const int max_buffer_samples = SAMPLE_BUFFER_SIZE;
const int max_samples = state.length_samples;
int play_forever = vgmstream_get_play_forever(vgmstream);
while (!state.decode_abort) {
int samples_to_do;
int output_bytes;
if (state.decode_pos_samples + max_buffer_samples > state.length_samples && !play_forever)
if (state.decode_pos_samples + max_buffer_samples > state.length_samples && !play_forever) {
samples_to_do = state.length_samples - state.decode_pos_samples;
else
if (samples_to_do < 0) /* just in case */
samples_to_do = 0;
}
else {
samples_to_do = max_buffer_samples;
/* seek setup */
if (state.seek_sample >= 0) {
setup_seek(&state, max_samples, play_forever);
}
output_bytes = (samples_to_do * state.output_channels * sizeof(short));
@ -1398,6 +1391,7 @@ DWORD WINAPI __stdcall decode(void *arg) {
do_seek(&state, vgmstream);
/* flush Winamp buffers *after* fully seeking (allows to play buffered samples while we seek, feels a bit snappier) */
if (state.seek_sample < 0)
input_module.outMod->Flush(state.decode_pos_ms);
}
else if (input_module.outMod->CanWrite() >= output_bytes) { /* decode */
@ -1760,7 +1754,6 @@ __declspec(dllexport) void *winampGetExtendedRead_openW(const wchar_t *fn, int *
/* decode len to dest buffer, called multiple times until file done or decoding is aborted */
__declspec(dllexport) size_t winampGetExtendedRead_getData(void *handle, char *dest, size_t len, int *killswitch) {
const int max_buffer_samples = SAMPLE_BUFFER_SIZE;
const int max_samples = xstate.length_samples;
unsigned copied = 0;
int done = 0;
VGMSTREAM* xvgmstream = handle;
@ -1773,14 +1766,13 @@ __declspec(dllexport) size_t winampGetExtendedRead_getData(void *handle, char *d
while (copied + (max_buffer_samples * xvgmstream->channels * sizeof(short)) < len && !done) {
int samples_to_do;
if (xstate.decode_pos_samples + max_buffer_samples > xstate.length_samples && !play_forever)
if (xstate.decode_pos_samples + max_buffer_samples > xstate.length_samples && !play_forever) {
samples_to_do = xstate.length_samples - xstate.decode_pos_samples;
else
if (samples_to_do < 0) /* just in case */
samples_to_do = 0;
}
else {
samples_to_do = max_buffer_samples;
/* seek setup (max samples to skip if still seeking, mark done) */
if (xstate.seek_sample != -1) {
setup_seek(&xstate, max_samples, play_forever);
}
if (!samples_to_do) { /* track finished */