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// license:BSD-3-Clause
// copyright-holders:Ryan Holtz
//============================================================
//
// aviwrite.cpp - AVI screenshot writer class
//
//============================================================
#include "emu.h"
#include "aviwrite.h"
#include "modules/lib/osdobj_common.h"
#include "screen.h"
avi_write::avi_write(running_machine& machine, uint32_t width, uint32_t height)
: m_machine(machine)
, m_recording(false)
, m_width(width)
, m_height(height)
, m_output_file(nullptr)
, m_frame(0)
{
}
avi_write::~avi_write()
{
if (m_recording)
{
stop();
}
}
void avi_write::record(const char *name)
{
if (m_recording)
{
end_avi_recording();
}
begin_avi_recording(name);
}
void avi_write::stop()
{
osd_printf_info("Stopping AVI recording after %d frames.\n", m_frame);
end_avi_recording();
}
void avi_write::begin_avi_recording(const char *name)
{
// stop any existing recording
end_avi_recording();
// reset the state
m_frame = 0;
m_next_frame_time = m_machine.time();
const screen_device *primary_screen = screen_device_enumerator(m_machine.root_device()).first();
// build up information about this new movie
avi_file::movie_info info;
info.video_format = 0;
info.video_timescale = 1000 * (primary_screen ? ATTOSECONDS_TO_HZ(primary_screen->frame_period().m_attoseconds) : screen_device::DEFAULT_FRAME_RATE);
info.video_sampletime = 1000;
info.video_numsamples = 0;
info.video_width = m_width;
info.video_height = m_height;
info.video_depth = 24;
info.audio_format = 0;
info.audio_timescale = m_machine.sample_rate();
info.audio_sampletime = 1;
info.audio_numsamples = 0;
info.audio_channels = 2;
info.audio_samplebits = 16;
info.audio_samplerate = m_machine.sample_rate();
// compute the frame time
m_frame_period = attotime::from_seconds(1000) / info.video_timescale;
// create a new temporary movie file
emu_file tempfile(m_machine.options().snapshot_directory(), OPEN_FLAG_WRITE | OPEN_FLAG_CREATE | OPEN_FLAG_CREATE_PATHS);
const std::error_condition filerr = (!name || !name[0] || !std::strcmp(name, OSDOPTVAL_AUTO))
? m_machine.video().open_next(tempfile, "avi")
: tempfile.open(name);
// if we succeeded, make a copy of the name and create the real file over top
if (!filerr)
{
const std::string fullpath = tempfile.fullpath();
tempfile.close();
// create the file and free the string
avi_file::error avierr = avi_file::create(fullpath, info, m_output_file);
if (avierr != avi_file::error::NONE)
{
osd_printf_error("Error creating AVI: %s\n", avi_file::error_string(avierr));
}
else
{
m_recording = true;
}
}
}
void avi_write::end_avi_recording()
{
m_recording = false;
m_output_file.reset();
m_frame = 0;
}
void avi_write::video_frame(bitmap_rgb32& snap)
{
// get the current time
attotime curtime = m_machine.time();
// loop until we hit the right time
while (m_next_frame_time <= curtime)
{
// handle an AVI recording
// write the next frame
avi_file::error avierr = m_output_file->append_video_frame(snap);
if (avierr != avi_file::error::NONE)
{
osd_printf_error("Error while logging AVI video frame: %s\n", avi_file::error_string(avierr));
osd_printf_error("Stopping AVI recording.\n");
end_avi_recording();
return;
}
// advance time
m_next_frame_time += m_frame_period;
m_frame++;
}
}
void avi_write::audio_frame(const int16_t *buffer, int samples_this_frame)
{
// only record if we have a file
if (m_output_file != nullptr)
{
// write the next frame
avi_file::error avierr = m_output_file->append_sound_samples(0, buffer + 0, samples_this_frame, 1);
if (avierr == avi_file::error::NONE)
avierr = m_output_file->append_sound_samples(1, buffer + 1, samples_this_frame, 1);
if (avierr != avi_file::error::NONE)
{
osd_printf_error("Error while logging AVI audio frame: %s\n", avi_file::error_string(avierr));
osd_printf_error("Stopping AVI recording.\n");
end_avi_recording();
}
}
}
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