/* gets the point where audio and video are closest together */
static size_t get_interleaved_start_idx(struct obs_output *output)
{
int64_t closest_diff = 0x7FFFFFFFFFFFFFFFLL;
struct encoder_packet *first_video = find_first_packet_type(output,
OBS_ENCODER_VIDEO, 0);
size_t video_idx = DARRAY_INVALID;
size_t idx = 0;
for (size_t i = 0; i < output->interleaved_packets.num; i++) {
struct encoder_packet *packet =
&output->interleaved_packets.array[i];
int64_t diff;
if (packet->type != OBS_ENCODER_AUDIO) {
if (packet == first_video)
video_idx = i;
continue;
}
diff = llabs(packet->dts_usec - first_video->dts_usec);
if (diff < closest_diff) {
closest_diff = diff;
idx = i;
}
}
return video_idx < idx ? video_idx : idx;
}
static bool initialize_interleaved_packets(struct obs_output *output)
{
struct encoder_packet *video;
struct encoder_packet *audio[MAX_AUDIO_MIXES];
size_t audio_mixes = num_audio_mixes(output);
video = find_first_packet_type(output, OBS_ENCODER_VIDEO, 0);
if (!video)
output->received_video = false;
for (size_t i = 0; i < audio_mixes; i++) {
audio[i] = find_first_packet_type(output, OBS_ENCODER_AUDIO, i);
if (!audio[i]) {
output->received_audio = false;
return false;
}
}
if (!video) {
return false;
}
/* get new offsets */
output->video_offset = video->dts;
for (size_t i = 0; i < audio_mixes; i++)
output->audio_offsets[i] = audio[i]->dts;
/* subtract offsets from highest TS offset variables */
output->highest_audio_ts -= audio[0]->dts_usec;
output->highest_video_ts -= video->dts_usec;
/* apply new offsets to all existing packet DTS/PTS values */
for (size_t i = 0; i < output->interleaved_packets.num; i++) {
struct encoder_packet *packet =
&output->interleaved_packets.array[i];
apply_interleaved_packet_offset(output, packet);
}
return true;
}
static bool get_audio_and_video_packets(struct obs_output *output,
struct encoder_packet **video,
struct encoder_packet **audio, size_t audio_mixes)
{
*video = find_first_packet_type(output, OBS_ENCODER_VIDEO, 0);
if (!*video)
output->received_video = false;
for (size_t i = 0; i < audio_mixes; i++) {
audio[i] = find_first_packet_type(output, OBS_ENCODER_AUDIO, i);
if (!audio[i]) {
output->received_audio = false;
return false;
}
}
if (!*video) {
return false;
}
return true;
}
static void initialize_interleaved_packets(struct obs_output *output)
{
struct encoder_packet *video;
struct encoder_packet *audio;
video = find_first_packet_type(output, OBS_ENCODER_VIDEO);
audio = find_first_packet_type(output, OBS_ENCODER_AUDIO);
/* get new offsets */
output->video_offset = video->dts;
output->audio_offset = audio->dts;
/* subtract offsets from highest TS offset variables */
output->highest_audio_ts -= audio->dts_usec;
output->highest_video_ts -= video->dts_usec;
/* apply new offsets to all existing packet DTS/PTS values */
for (size_t i = 0; i < output->interleaved_packets.num; i++) {
struct encoder_packet *packet =
&output->interleaved_packets.array[i];
apply_interleaved_packet_offset(output, packet);
}
}
