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(ffmpeg) Prevent seeking past the end of files (hang fix)

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This commit is contained in:
jdgleaver 2020-08-04 17:20:23 +01:00
parent 3d8ae1126a
commit d36cd7037a
1 changed files with 51 additions and 3 deletions
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54
cores/libretro-ffmpeg/ffmpeg_core.c
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@ -250,6 +250,18 @@ void CORE_PREFIX(retro_init)(void)
void CORE_PREFIX(retro_deinit)(void)
{
libretro_supports_bitmasks = false;
if (video_buffer)
{
video_buffer_destroy(video_buffer);
video_buffer = NULL;
}
if (tpool)
{
tpool_destroy(tpool);
tpool = NULL;
}
}
unsigned CORE_PREFIX(retro_api_version)(void)
@ -490,6 +502,7 @@ static void seek_frame(int seek_frames)
{
char msg[256];
struct retro_message_ext msg_obj = {0};
int seek_frames_capped = seek_frames;
unsigned seek_hours = 0;
unsigned seek_minutes = 0;
unsigned seek_seconds = 0;
@ -497,10 +510,45 @@ static void seek_frame(int seek_frames)
msg[0] = '\0';
/* Handle resets + attempts to seek to a location
* before the start of the video */
if ((seek_frames < 0 && (unsigned)-seek_frames > frame_cnt) || reset_triggered)
frame_cnt = 0;
else
/* Handle backwards seeking */
else if (seek_frames < 0)
frame_cnt += seek_frames;
/* Handle forwards seeking */
else
{
double current_time = (double)frame_cnt / media.interpolate_fps;
double seek_step_time = (double)seek_frames / media.interpolate_fps;
double seek_target_time = current_time + seek_step_time;
double seek_time_max = media.duration.time - 1.0;
seek_time_max = (seek_time_max > 0.0) ?
seek_time_max : 0.0;
/* Ensure that we don't attempt to seek past
* the end of the file */
if (seek_target_time > seek_time_max)
{
seek_step_time = seek_time_max - current_time;
/* If seek would have taken us to the
* end of the file, restart it instead
* (less jarring for the user in case of
* accidental seeking...) */
if (seek_step_time < 0.0)
seek_frames_capped = -1;
else
seek_frames_capped = (int)(seek_step_time * media.interpolate_fps);
}
if (seek_frames_capped < 0)
frame_cnt = 0;
else
frame_cnt += seek_frames_capped;
}
slock_lock(fifo_lock);
do_seek = true;
@ -535,7 +583,7 @@ static void seek_frame(int seek_frames)
msg_obj.progress = seek_progress;
CORE_PREFIX(environ_cb)(RETRO_ENVIRONMENT_SET_MESSAGE_EXT, &msg_obj);
if (seek_frames < 0)
if (seek_frames_capped < 0)
{
log_cb(RETRO_LOG_INFO, "[FFMPEG] Resetting PTS.\n");
frames[0].pts = 0.0;
@ -1663,7 +1711,7 @@ static void decode_thread(void *data)
{
unsigned i;
bool eof = false;
struct SwrContext *swr[audio_streams_num];
struct SwrContext *swr[(audio_streams_num > 0) ? audio_streams_num : 1];
AVFrame *aud_frame = NULL;
size_t frame_size = 0;
int16_t *audio_buffer = NULL;