void media_input::select_subtitle_stream(int subtitle_stream)
{
if (_have_active_video_read)
{
(void)finish_video_frame_read();
}
if (_have_active_audio_read)
{
(void)finish_audio_blob_read();
}
if (_have_active_subtitle_read)
{
(void)finish_subtitle_box_read();
}
assert(subtitle_stream >= -1);
assert(subtitle_stream < subtitle_streams());
_active_subtitle_stream = subtitle_stream;
int o = -1, s = -1;
if (_active_subtitle_stream >= 0)
{
get_subtitle_stream(_active_subtitle_stream, o, s);
}
for (size_t i = 0; i < _media_objects.size(); i++)
{
for (int j = 0; j < _media_objects[i].subtitle_streams(); j++)
{
_media_objects[i].subtitle_stream_set_active(j, (i == static_cast<size_t>(o) && j == s));
}
}
// Re-set subtitle box template
if (_active_subtitle_stream >= 0)
_subtitle_box = _media_objects[o].subtitle_box_template(s);
else
_subtitle_box = subtitle_box();
}
void media_input::select_audio_stream(int audio_stream)
{
if (_have_active_video_read)
{
(void)finish_video_frame_read();
}
if (_have_active_audio_read)
{
(void)finish_audio_blob_read();
}
if (_have_active_subtitle_read)
{
(void)finish_subtitle_box_read();
}
assert(audio_stream >= 0);
assert(audio_stream < audio_streams());
_active_audio_stream = audio_stream;
int o, s;
get_audio_stream(_active_audio_stream, o, s);
for (size_t i = 0; i < _media_objects.size(); i++)
{
for (int j = 0; j < _media_objects[i].audio_streams(); j++)
{
_media_objects[i].audio_stream_set_active(j, (i == static_cast<size_t>(o) && j == s));
}
}
// Re-set audio blob template
_audio_blob = _media_objects[o].audio_blob_template(s);
}
void media_input::select_video_stream(int video_stream)
{
if (_have_active_video_read)
{
(void)finish_video_frame_read();
}
if (_have_active_audio_read)
{
(void)finish_audio_blob_read();
}
if (_have_active_subtitle_read)
{
(void)finish_subtitle_box_read();
}
assert(video_stream >= 0);
assert(video_stream < video_streams());
if (_video_frame.stereo_layout == parameters::layout_separate)
{
_active_video_stream = 0;
for (size_t i = 0; i < _media_objects.size(); i++)
{
for (int j = 0; j < _media_objects[i].video_streams(); j++)
{
_media_objects[i].video_stream_set_active(j, true);
}
}
}
else
{
_active_video_stream = video_stream;
int o, s;
get_video_stream(_active_video_stream, o, s);
for (size_t i = 0; i < _media_objects.size(); i++)
{
for (int j = 0; j < _media_objects[i].video_streams(); j++)
{
_media_objects[i].video_stream_set_active(j, (i == static_cast<size_t>(o) && j == s));
}
}
}
// Re-set video frame template
parameters::stereo_layout_t stereo_layout_bak = _video_frame.stereo_layout;
bool stereo_layout_swap_bak = _video_frame.stereo_layout_swap;
int o, s;
get_video_stream(_active_video_stream, o, s);
_video_frame = _media_objects[o].video_frame_template(s);
_video_frame.stereo_layout = stereo_layout_bak;
_video_frame.stereo_layout_swap = stereo_layout_swap_bak;
_video_frame.set_view_dimensions();
}
void media_input::seek(int64_t pos)
{
if (_have_active_video_read)
{
(void)finish_video_frame_read();
}
if (_have_active_audio_read)
{
(void)finish_audio_blob_read();
}
if (_have_active_subtitle_read)
{
(void)finish_subtitle_box_read();
}
for (size_t i = 0; i < _media_objects.size(); i++)
{
_media_objects[i].seek(pos);
}
}
void media_input::close()
{
try
{
if (_have_active_video_read)
{
(void)finish_video_frame_read();
}
if (_have_active_audio_read)
{
(void)finish_audio_blob_read();
}
if (_have_active_subtitle_read)
{
(void)finish_subtitle_box_read();
}
for (size_t i = 0; i < _media_objects.size(); i++)
{
_media_objects[i].close();
}
}
catch (...)
{
}
_is_device = false;
_id = "";
_media_objects.clear();
_tag_names.clear();
_tag_values.clear();
_video_stream_names.clear();
_audio_stream_names.clear();
_subtitle_stream_names.clear();
_active_video_stream = -1;
_active_audio_stream = -1;
_active_subtitle_stream = -1;
_initial_skip = 0;
_duration = -1;
_video_frame = video_frame();
_audio_blob = audio_blob();
_subtitle_box = subtitle_box();
}
void media_input::select_video_stream(int video_stream)
{
if (_have_active_video_read)
{
(void)finish_video_frame_read();
}
if (_have_active_audio_read)
{
(void)finish_audio_blob_read();
}
if (_have_active_subtitle_read)
{
(void)finish_subtitle_box_read();
}
assert(video_stream >= 0);
assert(video_stream < video_streams());
if (_video_frame.stereo_layout == video_frame::separate)
{
_active_video_stream = 0;
for (size_t i = 0; i < _media_objects.size(); i++)
{
for (int j = 0; j < _media_objects[i].video_streams(); j++)
{
_media_objects[i].video_stream_set_active(j, true);
}
}
}
else
{
_active_video_stream = video_stream;
int o, s;
get_video_stream(_active_video_stream, o, s);
for (size_t i = 0; i < _media_objects.size(); i++)
{
for (int j = 0; j < _media_objects[i].video_streams(); j++)
{
_media_objects[i].video_stream_set_active(j, (i == static_cast<size_t>(o) && j == s));
}
}
}
}
void media_input::set_stereo_layout(parameters::stereo_layout_t layout, bool swap)
{
assert(stereo_layout_is_supported(layout, swap));
if (_have_active_video_read)
{
(void)finish_video_frame_read();
}
if (_have_active_audio_read)
{
(void)finish_audio_blob_read();
}
if (_have_active_subtitle_read)
{
(void)finish_subtitle_box_read();
}
int o, s;
get_video_stream(_active_video_stream, o, s);
const video_frame &t = _media_objects[o].video_frame_template(s);
_video_frame = t;
_video_frame.stereo_layout = layout;
_video_frame.stereo_layout_swap = swap;
_video_frame.set_view_dimensions();
// Reset active stream in case we switched to or from 'separate'.
select_video_stream(_active_video_stream);
if (layout == parameters::layout_separate)
{
// If we switched the layout to 'separate', then we have to seek to the
// position of the first video stream, or else the second video stream
// is out of sync.
int64_t pos = _media_objects[o].tell();
if (pos > std::numeric_limits<int64_t>::min())
{
seek(pos);
}
}
}
