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Add QNX video and audio modules

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This commit is contained in:
Elad Lahav 2023-01-07 06:29:03 -05:00 committed by Ryan C. Gordon
parent 292b80a13a
commit 4374645738
13 changed files with 1596 additions and 0 deletions
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7
CMakeLists.txt
View File

@ -1534,6 +1534,12 @@ elseif(UNIX AND NOT APPLE AND NOT RISCOS AND NOT HAIKU)
file(GLOB NETBSD_AUDIO_SOURCES ${SDL3_SOURCE_DIR}/src/audio/netbsd/*.c)
list(APPEND SOURCE_FILES ${NETBSD_AUDIO_SOURCES})
set(HAVE_SDL_AUDIO TRUE)
elseif(QNX)
set(SDL_AUDIO_DRIVER_QNX 1)
file(GLOB QNX_AUDIO_SOURCES ${SDL3_SOURCE_DIR}/src/audio/qnx/*.c)
list(APPEND SOURCE_FILES ${QNX_AUDIO_SOURCES})
list(APPEND EXTRA_LIBS asound)
set(HAVE_SDL_AUDIO TRUE)
endif()
CheckOSS()
CheckALSA()
@ -1562,6 +1568,7 @@ elseif(UNIX AND NOT APPLE AND NOT RISCOS AND NOT HAIKU)
set(SDL_VIDEO_VULKAN 1)
set(HAVE_VULKAN TRUE)
endif()
CheckQNXScreen()
endif()
if(UNIX)

16
cmake/sdlchecks.cmake
View File

@ -756,6 +756,22 @@ macro(CheckOpenGLES)
endif()
endmacro()
# Requires:
# - EGL
macro(CheckQNXScreen)
if(QNX AND HAVE_OPENGL_EGL)
check_c_source_compiles("
#include <screen/screen.h>
int main (int argc, char** argv) { return 0; }" HAVE_QNX_SCREEN)
if(HAVE_QNX_SCREEN)
set(SDL_VIDEO_DRIVER_QNX 1)
file(GLOB QNX_VIDEO_SOURCES ${SDL3_SOURCE_DIR}/src/video/qnx/*.c)
list(APPEND SOURCE_FILES ${QNX_VIDEO_SOURCES})
list(APPEND EXTRA_LIBS screen EGL)
endif()
endif()
endmacro()
# Requires:
# - nada
# Optional:

2
include/build_config/SDL_build_config.h.cmake
View File

@ -303,6 +303,7 @@
#cmakedefine SDL_AUDIO_DRIVER_PSP @SDL_AUDIO_DRIVER_PSP@
#cmakedefine SDL_AUDIO_DRIVER_PS2 @SDL_AUDIO_DRIVER_PS2@
#cmakedefine SDL_AUDIO_DRIVER_N3DS @SDL_AUDIO_DRIVER_N3DS@
#cmakedefine SDL_AUDIO_DRIVER_QNX @SDL_AUDIO_DRIVER_QNX@
/* Enable various input drivers */
#cmakedefine SDL_INPUT_LINUXEV @SDL_INPUT_LINUXEV@
@ -419,6 +420,7 @@
#cmakedefine SDL_VIDEO_DRIVER_X11_XRANDR @SDL_VIDEO_DRIVER_X11_XRANDR@
#cmakedefine SDL_VIDEO_DRIVER_X11_XSCRNSAVER @SDL_VIDEO_DRIVER_X11_XSCRNSAVER@
#cmakedefine SDL_VIDEO_DRIVER_X11_XSHAPE @SDL_VIDEO_DRIVER_X11_XSHAPE@
#cmakedefine SDL_VIDEO_DRIVER_QNX @SDL_VIDEO_DRIVER_QNX@
#ifdef SDL_VIDEO_DRIVER_ANDROID
#define SDL_ENABLE_SYSWM_ANDROID

3
src/audio/SDL_audio.c
View File

@ -91,6 +91,9 @@ static const AudioBootStrap *const bootstrap[] = {
#if SDL_AUDIO_DRIVER_OSS
&DSP_bootstrap,
#endif
#if SDL_AUDIO_DRIVER_QNX
&QSAAUDIO_bootstrap,
#endif
#if SDL_AUDIO_DRIVER_DISK
&DISKAUDIO_bootstrap,
#endif

1
src/audio/SDL_sysaudio.h
View File

@ -198,5 +198,6 @@ extern AudioBootStrap PSPAUDIO_bootstrap;
extern AudioBootStrap VITAAUD_bootstrap;
extern AudioBootStrap N3DSAUDIO_bootstrap;
extern AudioBootStrap EMSCRIPTENAUDIO_bootstrap;
extern AudioBootStrap QSAAUDIO_bootstrap;
#endif /* SDL_sysaudio_h_ */

682
src/audio/qnx/SDL_qsa_audio.c Normal file
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@ -0,0 +1,682 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
/*
* !!! FIXME: streamline this a little by removing all the
* !!! FIXME: if (capture) {} else {} sections that are identical
* !!! FIXME: except for one flag.
*/
/* !!! FIXME: can this target support hotplugging? */
#include "../../SDL_internal.h"
#if SDL_AUDIO_DRIVER_QNX
#include <errno.h>
#include <unistd.h>
#include <fcntl.h>
#include <signal.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sched.h>
#include <sys/select.h>
#include <sys/neutrino.h>
#include <sys/asoundlib.h>
#include "SDL3/SDL_timer.h"
#include "SDL3/SDL_audio.h"
#include "../../core/unix/SDL_poll.h"
#include "../SDL_audio_c.h"
#include "SDL_qsa_audio.h"
/* default channel communication parameters */
#define DEFAULT_CPARAMS_RATE 44100
#define DEFAULT_CPARAMS_VOICES 1
#define DEFAULT_CPARAMS_FRAG_SIZE 4096
#define DEFAULT_CPARAMS_FRAGS_MIN 1
#define DEFAULT_CPARAMS_FRAGS_MAX 1
/* List of found devices */
#define QSA_MAX_DEVICES 32
#define QSA_MAX_NAME_LENGTH 81+16 /* Hardcoded in QSA, can't be changed */
typedef struct _QSA_Device
{
char name[QSA_MAX_NAME_LENGTH]; /* Long audio device name for SDL */
int cardno;
int deviceno;
} QSA_Device;
QSA_Device qsa_playback_device[QSA_MAX_DEVICES];
uint32_t qsa_playback_devices;
QSA_Device qsa_capture_device[QSA_MAX_DEVICES];
uint32_t qsa_capture_devices;
static SDL_INLINE int
QSA_SetError(const char *fn, int status)
{
return SDL_SetError("QSA: %s() failed: %s", fn, snd_strerror(status));
}
/* !!! FIXME: does this need to be here? Does the SDL version not work? */
static void
QSA_ThreadInit(_THIS)
{
/* Increase default 10 priority to 25 to avoid jerky sound */
struct sched_param param;
if (SchedGet(0, 0, &param) != -1) {
param.sched_priority = param.sched_curpriority + 15;
SchedSet(0, 0, SCHED_NOCHANGE, &param);
}
}
/* PCM channel parameters initialize function */
static void
QSA_InitAudioParams(snd_pcm_channel_params_t * cpars)
{
SDL_zerop(cpars);
cpars->channel = SND_PCM_CHANNEL_PLAYBACK;
cpars->mode = SND_PCM_MODE_BLOCK;
cpars->start_mode = SND_PCM_START_DATA;
cpars->stop_mode = SND_PCM_STOP_STOP;
cpars->format.format = SND_PCM_SFMT_S16_LE;
cpars->format.interleave = 1;
cpars->format.rate = DEFAULT_CPARAMS_RATE;
cpars->format.voices = DEFAULT_CPARAMS_VOICES;
cpars->buf.block.frag_size = DEFAULT_CPARAMS_FRAG_SIZE;
cpars->buf.block.frags_min = DEFAULT_CPARAMS_FRAGS_MIN;
cpars->buf.block.frags_max = DEFAULT_CPARAMS_FRAGS_MAX;
}
/* This function waits until it is possible to write a full sound buffer */
static void
QSA_WaitDevice(_THIS)
{
int result;
/* Setup timeout for playing one fragment equal to 2 seconds */
/* If timeout occured than something wrong with hardware or driver */
/* For example, Vortex 8820 audio driver stucks on second DAC because */
/* it doesn't exist ! */
result = SDL_IOReady(this->hidden->audio_fd,
this->hidden->iscapture ? SDL_IOR_READ : SDL_IOR_WRITE,
2 * 1000);
switch (result) {
case -1:
SDL_SetError("QSA: SDL_IOReady() failed: %s", strerror(errno));
break;
case 0:
SDL_SetError("QSA: timeout on buffer waiting occured");
this->hidden->timeout_on_wait = 1;
break;
default:
this->hidden->timeout_on_wait = 0;
break;
}
}
static void
QSA_PlayDevice(_THIS)
{
snd_pcm_channel_status_t cstatus;
int written;
int status;
int towrite;
void *pcmbuffer;
if (!SDL_AtomicGet(&this->enabled) || !this->hidden) {
return;
}
towrite = this->spec.size;
pcmbuffer = this->hidden->pcm_buf;
/* Write the audio data, checking for EAGAIN (buffer full) and underrun */
do {
written =
snd_pcm_plugin_write(this->hidden->audio_handle, pcmbuffer,
towrite);
if (written != towrite) {
/* Check if samples playback got stuck somewhere in hardware or in */
/* the audio device driver */
if ((errno == EAGAIN) && (written == 0)) {
if (this->hidden->timeout_on_wait != 0) {
SDL_SetError("QSA: buffer playback timeout");
return;
}
}
/* Check for errors or conditions */
if ((errno == EAGAIN) || (errno == EWOULDBLOCK)) {
/* Let a little CPU time go by and try to write again */
SDL_Delay(1);
/* if we wrote some data */
towrite -= written;
pcmbuffer += written * this->spec.channels;
continue;
} else {
if ((errno == EINVAL) || (errno == EIO)) {
SDL_zero(cstatus);
if (!this->hidden->iscapture) {
cstatus.channel = SND_PCM_CHANNEL_PLAYBACK;
} else {
cstatus.channel = SND_PCM_CHANNEL_CAPTURE;
}
status =
snd_pcm_plugin_status(this->hidden->audio_handle,
&cstatus);
if (status < 0) {
QSA_SetError("snd_pcm_plugin_status", status);
return;
}
if ((cstatus.status == SND_PCM_STATUS_UNDERRUN) ||
(cstatus.status == SND_PCM_STATUS_READY)) {
if (!this->hidden->iscapture) {
status =
snd_pcm_plugin_prepare(this->hidden->
audio_handle,
SND_PCM_CHANNEL_PLAYBACK);
} else {
status =
snd_pcm_plugin_prepare(this->hidden->
audio_handle,
SND_PCM_CHANNEL_CAPTURE);
}
if (status < 0) {
QSA_SetError("snd_pcm_plugin_prepare", status);
return;
}
}
continue;
} else {
return;
}
}
} else {
/* we wrote all remaining data */
towrite -= written;
pcmbuffer += written * this->spec.channels;
}
} while ((towrite > 0) && SDL_AtomicGet(&this->enabled));
/* If we couldn't write, assume fatal error for now */
if (towrite != 0) {
SDL_OpenedAudioDeviceDisconnected(this);
}
}
static Uint8 *
QSA_GetDeviceBuf(_THIS)
{
return this->hidden->pcm_buf;
}
static void
QSA_CloseDevice(_THIS)
{
if (this->hidden->audio_handle != NULL) {
#if _NTO_VERSION < 710
if (!this->hidden->iscapture) {
/* Finish playing available samples */
snd_pcm_plugin_flush(this->hidden->audio_handle,
SND_PCM_CHANNEL_PLAYBACK);
} else {
/* Cancel unread samples during capture */
snd_pcm_plugin_flush(this->hidden->audio_handle,
SND_PCM_CHANNEL_CAPTURE);
}
#endif
snd_pcm_close(this->hidden->audio_handle);
}
SDL_free(this->hidden->pcm_buf);
SDL_free(this->hidden);
}
static int
QSA_OpenDevice(_THIS, const char *devname)
{
#if 0
/* !!! FIXME: SDL2 used to pass this handle. What's the alternative? */
const QSA_Device *device = (const QSA_Device *) handle;
#else
const QSA_Device *device = NULL;
#endif
int status = 0;
int format = 0;
SDL_AudioFormat test_format = 0;
int found = 0;
snd_pcm_channel_setup_t csetup;
snd_pcm_channel_params_t cparams;
SDL_bool iscapture = this->iscapture;
/* Initialize all variables that we clean on shutdown */
this->hidden =
(struct SDL_PrivateAudioData *) SDL_calloc(1,
(sizeof
(struct
SDL_PrivateAudioData)));
if (this->hidden == NULL) {
return SDL_OutOfMemory();
}
/* Initialize channel transfer parameters to default */
QSA_InitAudioParams(&cparams);
/* Initialize channel direction: capture or playback */
this->hidden->iscapture = iscapture ? SDL_TRUE : SDL_FALSE;
if (device != NULL) {
/* Open requested audio device */
this->hidden->deviceno = device->deviceno;
this->hidden->cardno = device->cardno;
status = snd_pcm_open(&this->hidden->audio_handle,
device->cardno, device->deviceno,
iscapture ? SND_PCM_OPEN_CAPTURE : SND_PCM_OPEN_PLAYBACK);
} else {
/* Open system default audio device */
status = snd_pcm_open_preferred(&this->hidden->audio_handle,
&this->hidden->cardno,
&this->hidden->deviceno,
iscapture ? SND_PCM_OPEN_CAPTURE : SND_PCM_OPEN_PLAYBACK);
}
/* Check if requested device is opened */
if (status < 0) {
this->hidden->audio_handle = NULL;
return QSA_SetError("snd_pcm_open", status);
}
/* Try for a closest match on audio format */
format = 0;
/* can't use format as SND_PCM_SFMT_U8 = 0 in qsa */
found = 0;
for (test_format = SDL_FirstAudioFormat(this->spec.format); !found;) {
/* if match found set format to equivalent QSA format */
switch (test_format) {
case AUDIO_U8:
{
format = SND_PCM_SFMT_U8;
found = 1;
}
break;
case AUDIO_S8:
{
format = SND_PCM_SFMT_S8;
found = 1;
}
break;
case AUDIO_S16LSB:
{
format = SND_PCM_SFMT_S16_LE;
found = 1;
}
break;
case AUDIO_S16MSB:
{
format = SND_PCM_SFMT_S16_BE;
found = 1;
}
break;
case AUDIO_U16LSB:
{
format = SND_PCM_SFMT_U16_LE;
found = 1;
}
break;
case AUDIO_U16MSB:
{
format = SND_PCM_SFMT_U16_BE;
found = 1;
}
break;
case AUDIO_S32LSB:
{
format = SND_PCM_SFMT_S32_LE;
found = 1;
}
break;
case AUDIO_S32MSB:
{
format = SND_PCM_SFMT_S32_BE;
found = 1;
}
break;
case AUDIO_F32LSB:
{
format = SND_PCM_SFMT_FLOAT_LE;
found = 1;
}
break;
case AUDIO_F32MSB:
{
format = SND_PCM_SFMT_FLOAT_BE;
found = 1;
}
break;
default:
{
break;
}
}
if (!found) {
test_format = SDL_NextAudioFormat();
}
}
/* assumes test_format not 0 on success */
if (test_format == 0) {
return SDL_SetError("QSA: Couldn't find any hardware audio formats");
}
this->spec.format = test_format;
/* Set the audio format */
cparams.format.format = format;
/* Set mono/stereo/4ch/6ch/8ch audio */
cparams.format.voices = this->spec.channels;
/* Set rate */
cparams.format.rate = this->spec.freq;
/* Setup the transfer parameters according to cparams */
status = snd_pcm_plugin_params(this->hidden->audio_handle, &cparams);
if (status < 0) {
return QSA_SetError("snd_pcm_plugin_params", status);
}
/* Make sure channel is setup right one last time */
SDL_zero(csetup);
if (!this->hidden->iscapture) {
csetup.channel = SND_PCM_CHANNEL_PLAYBACK;
} else {
csetup.channel = SND_PCM_CHANNEL_CAPTURE;
}
/* Setup an audio channel */
if (snd_pcm_plugin_setup(this->hidden->audio_handle, &csetup) < 0) {
return SDL_SetError("QSA: Unable to setup channel");
}
/* Calculate the final parameters for this audio specification */
SDL_CalculateAudioSpec(&this->spec);
this->hidden->pcm_len = this->spec.size;
if (this->hidden->pcm_len == 0) {
this->hidden->pcm_len =
csetup.buf.block.frag_size * this->spec.channels *
(snd_pcm_format_width(format) / 8);
}
/*
* Allocate memory to the audio buffer and initialize with silence
* (Note that buffer size must be a multiple of fragment size, so find
* closest multiple)
*/
this->hidden->pcm_buf =
(Uint8 *) SDL_malloc(this->hidden->pcm_len);
if (this->hidden->pcm_buf == NULL) {
return SDL_OutOfMemory();
}
SDL_memset(this->hidden->pcm_buf, this->spec.silence,
this->hidden->pcm_len);
/* get the file descriptor */
if (!this->hidden->iscapture) {
this->hidden->audio_fd =
snd_pcm_file_descriptor(this->hidden->audio_handle,
SND_PCM_CHANNEL_PLAYBACK);
} else {
this->hidden->audio_fd =
snd_pcm_file_descriptor(this->hidden->audio_handle,
SND_PCM_CHANNEL_CAPTURE);
}
if (this->hidden->audio_fd < 0) {
return QSA_SetError("snd_pcm_file_descriptor", status);
}
/* Prepare an audio channel */
if (!this->hidden->iscapture) {
/* Prepare audio playback */
status =
snd_pcm_plugin_prepare(this->hidden->audio_handle,
SND_PCM_CHANNEL_PLAYBACK);
} else {
/* Prepare audio capture */
status =
snd_pcm_plugin_prepare(this->hidden->audio_handle,
SND_PCM_CHANNEL_CAPTURE);
}
if (status < 0) {
return QSA_SetError("snd_pcm_plugin_prepare", status);
}
/* We're really ready to rock and roll. :-) */
return 0;
}
static void
QSA_DetectDevices(void)
{
uint32_t it;
uint32_t cards;
uint32_t devices;
int32_t status;
/* Detect amount of available devices */
/* this value can be changed in the runtime */
cards = snd_cards();
/* If io-audio manager is not running we will get 0 as number */
/* of available audio devices */
if (cards == 0) {
/* We have no any available audio devices */
return;
}
/* !!! FIXME: code duplication */
/* Find requested devices by type */
{ /* output devices */
/* Playback devices enumeration requested */
for (it = 0; it < cards; it++) {
devices = 0;
do {
status =
snd_card_get_longname(it,
qsa_playback_device
[qsa_playback_devices].name,
QSA_MAX_NAME_LENGTH);
if (status == EOK) {
snd_pcm_t *handle;
/* Add device number to device name */
sprintf(qsa_playback_device[qsa_playback_devices].name +
SDL_strlen(qsa_playback_device
[qsa_playback_devices].name), " d%d",
devices);
/* Store associated card number id */
qsa_playback_device[qsa_playback_devices].cardno = it;
/* Check if this device id could play anything */
status =
snd_pcm_open(&handle, it, devices,
SND_PCM_OPEN_PLAYBACK);
if (status == EOK) {
qsa_playback_device[qsa_playback_devices].deviceno =
devices;
status = snd_pcm_close(handle);
if (status == EOK) {
/* Note that spec is NULL, because we are required to open the device before
* acquiring the mix format, making this information inaccessible at
* enumeration time
*/
SDL_AddAudioDevice(SDL_FALSE, qsa_playback_device[qsa_playback_devices].name, NULL, &qsa_playback_device[qsa_playback_devices]);
qsa_playback_devices++;
}
} else {
/* Check if we got end of devices list */
if (status == -ENOENT) {
break;
}
}
} else {
break;
}
/* Check if we reached maximum devices count */
if (qsa_playback_devices >= QSA_MAX_DEVICES) {
break;
}
devices++;
} while (1);
/* Check if we reached maximum devices count */
if (qsa_playback_devices >= QSA_MAX_DEVICES) {
break;
}
}
}
{ /* capture devices */
/* Capture devices enumeration requested */
for (it = 0; it < cards; it++) {
devices = 0;
do {
status =
snd_card_get_longname(it,
qsa_capture_device
[qsa_capture_devices].name,
QSA_MAX_NAME_LENGTH);
if (status == EOK) {
snd_pcm_t *handle;
/* Add device number to device name */
sprintf(qsa_capture_device[qsa_capture_devices].name +
SDL_strlen(qsa_capture_device
[qsa_capture_devices].name), " d%d",
devices);
/* Store associated card number id */
qsa_capture_device[qsa_capture_devices].cardno = it;
/* Check if this device id could play anything */
status =
snd_pcm_open(&handle, it, devices,
SND_PCM_OPEN_CAPTURE);
if (status == EOK) {
qsa_capture_device[qsa_capture_devices].deviceno =
devices;
status = snd_pcm_close(handle);
if (status == EOK) {
/* Note that spec is NULL, because we are required to open the device before
* acquiring the mix format, making this information inaccessible at
* enumeration time
*/
SDL_AddAudioDevice(SDL_TRUE, qsa_capture_device[qsa_capture_devices].name, NULL, &qsa_capture_device[qsa_capture_devices]);
qsa_capture_devices++;
}
} else {
/* Check if we got end of devices list */
if (status == -ENOENT) {
break;
}
}
/* Check if we reached maximum devices count */
if (qsa_capture_devices >= QSA_MAX_DEVICES) {
break;
}
} else {
break;
}
devices++;
} while (1);
/* Check if we reached maximum devices count */
if (qsa_capture_devices >= QSA_MAX_DEVICES) {
break;
}
}
}
}
static void
QSA_Deinitialize(void)
{
/* Clear devices array on shutdown */
/* !!! FIXME: we zero these on init...any reason to do it here? */
SDL_zeroa(qsa_playback_device);
SDL_zeroa(qsa_capture_device);
qsa_playback_devices = 0;
qsa_capture_devices = 0;
}
static SDL_bool
QSA_Init(SDL_AudioDriverImpl * impl)
{
/* Clear devices array */
SDL_zeroa(qsa_playback_device);
SDL_zeroa(qsa_capture_device);
qsa_playback_devices = 0;
qsa_capture_devices = 0;
/* Set function pointers */
/* DeviceLock and DeviceUnlock functions are used default, */
/* provided by SDL, which uses pthread_mutex for lock/unlock */
impl->DetectDevices = QSA_DetectDevices;
impl->OpenDevice = QSA_OpenDevice;
impl->ThreadInit = QSA_ThreadInit;
impl->WaitDevice = QSA_WaitDevice;
impl->PlayDevice = QSA_PlayDevice;
impl->GetDeviceBuf = QSA_GetDeviceBuf;
impl->CloseDevice = QSA_CloseDevice;
impl->Deinitialize = QSA_Deinitialize;
impl->LockDevice = NULL;
impl->UnlockDevice = NULL;
impl->ProvidesOwnCallbackThread = 0;
impl->HasCaptureSupport = 1;
impl->OnlyHasDefaultOutputDevice = 0;
impl->OnlyHasDefaultCaptureDevice = 0;
return SDL_TRUE; /* this audio target is available. */
}
AudioBootStrap QSAAUDIO_bootstrap = {
"qsa", "QNX QSA Audio", QSA_Init, 0
};
#endif /* SDL_AUDIO_DRIVER_QNX */
/* vi: set ts=4 sw=4 expandtab: */

57
src/audio/qnx/SDL_qsa_audio.h Normal file
View File

@ -0,0 +1,57 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "../../SDL_internal.h"
#ifndef __SDL_QSA_AUDIO_H__
#define __SDL_QSA_AUDIO_H__
#include <sys/asoundlib.h>
#include "../SDL_sysaudio.h"
/* Hidden "this" pointer for the audio functions */
#define _THIS SDL_AudioDevice* this
struct SDL_PrivateAudioData
{
/* SDL capture state */
SDL_bool iscapture;
/* The audio device handle */
int cardno;
int deviceno;
snd_pcm_t *audio_handle;
/* The audio file descriptor */
int audio_fd;
/* Select timeout status */
uint32_t timeout_on_wait;
/* Raw mixing buffer */
Uint8 *pcm_buf;
Uint32 pcm_len;
};
#endif /* __SDL_QSA_AUDIO_H__ */
/* vi: set ts=4 sw=4 expandtab: */

1
src/video/SDL_sysvideo.h
View File

@ -483,6 +483,7 @@ extern VideoBootStrap VIVANTE_bootstrap;
extern VideoBootStrap Emscripten_bootstrap;
extern VideoBootStrap OFFSCREEN_bootstrap;
extern VideoBootStrap NGAGE_bootstrap;
extern VideoBootStrap QNX_bootstrap;
/* Use SDL_OnVideoThread() sparingly, to avoid regressions in use cases that currently happen to work */
extern SDL_bool SDL_OnVideoThread(void);

3
src/video/SDL_video.c
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@ -115,6 +115,9 @@ static VideoBootStrap *bootstrap[] = {
#if SDL_VIDEO_DRIVER_EMSCRIPTEN
&Emscripten_bootstrap,
#endif
#if SDL_VIDEO_DRIVER_QNX
&QNX_bootstrap,
#endif
#if SDL_VIDEO_DRIVER_OFFSCREEN
&OFFSCREEN_bootstrap,
#endif

286
src/video/qnx/gl.c Normal file
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@ -0,0 +1,286 @@
/*
Simple DirectMedia Layer
Copyright (C) 2017 BlackBerry Limited
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "../../SDL_internal.h"
#include "sdl_qnx.h"
static EGLDisplay egl_disp;
/**
* Detertmines the pixel format to use based on the current display and EGL
* configuration.
* @param egl_conf EGL configuration to use
* @return A SCREEN_FORMAT* constant for the pixel format to use
*/
static int
chooseFormat(EGLConfig egl_conf)
{
EGLint buffer_bit_depth;
EGLint alpha_bit_depth;
eglGetConfigAttrib(egl_disp, egl_conf, EGL_BUFFER_SIZE, &buffer_bit_depth);
eglGetConfigAttrib(egl_disp, egl_conf, EGL_ALPHA_SIZE, &alpha_bit_depth);
switch (buffer_bit_depth) {
case 32:
return SCREEN_FORMAT_RGBX8888;
case 24:
return SCREEN_FORMAT_RGB888;
case 16:
switch (alpha_bit_depth) {
case 4:
return SCREEN_FORMAT_RGBX4444;
case 1:
return SCREEN_FORMAT_RGBA5551;
default:
return SCREEN_FORMAT_RGB565;
}
default:
return 0;
}
}
/**
* Enumerates the supported EGL configurations and chooses a suitable one.
* @param[out] pconf The chosen configuration
* @param[out] pformat The chosen pixel format
* @return 0 if successful, -1 on error
*/
int
glGetConfig(EGLConfig *pconf, int *pformat)
{
EGLConfig egl_conf = (EGLConfig)0;
EGLConfig *egl_configs;
EGLint egl_num_configs;
EGLint val;
EGLBoolean rc;
EGLint i;
// Determine the numbfer of configurations.
rc = eglGetConfigs(egl_disp, NULL, 0, &egl_num_configs);
if (rc != EGL_TRUE) {
return -1;
}
if (egl_num_configs == 0) {
return -1;
}
// Allocate enough memory for all configurations.
egl_configs = SDL_malloc(egl_num_configs * sizeof(*egl_configs));
if (egl_configs == NULL) {
return -1;
}
// Get the list of configurations.
rc = eglGetConfigs(egl_disp, egl_configs, egl_num_configs,
&egl_num_configs);
if (rc != EGL_TRUE) {
SDL_free(egl_configs);
return -1;
}
// Find a good configuration.
for (i = 0; i < egl_num_configs; i++) {
eglGetConfigAttrib(egl_disp, egl_configs[i], EGL_SURFACE_TYPE, &val);
if (!(val & EGL_WINDOW_BIT)) {
continue;
}
eglGetConfigAttrib(egl_disp, egl_configs[i], EGL_RENDERABLE_TYPE, &val);
if (!(val & EGL_OPENGL_ES2_BIT)) {
continue;
}
eglGetConfigAttrib(egl_disp, egl_configs[i], EGL_DEPTH_SIZE, &val);
if (val == 0) {
continue;
}
egl_conf = egl_configs[i];
break;
}
SDL_free(egl_configs);
*pconf = egl_conf;
*pformat = chooseFormat(egl_conf);
return 0;
}
/**
* Initializes the EGL library.
* @param _THIS
* @param name unused
* @return 0 if successful, -1 on error
*/
int
glLoadLibrary(_THIS, const char *name)
{
EGLNativeDisplayType disp_id = EGL_DEFAULT_DISPLAY;
egl_disp = eglGetDisplay(disp_id);
if (egl_disp == EGL_NO_DISPLAY) {
return -1;
}
if (eglInitialize(egl_disp, NULL, NULL) == EGL_FALSE) {
return -1;
}
return 0;
}
/**
* Finds the address of an EGL extension function.
* @param proc Function name
* @return Function address
*/
void *
glGetProcAddress(_THIS, const char *proc)
{
return eglGetProcAddress(proc);
}
/**
* Associates the given window with the necessary EGL structures for drawing and
* displaying content.
* @param _THIS
* @param window The SDL window to create the context for
* @return A pointer to the created context, if successful, NULL on error
*/
SDL_GLContext
glCreateContext(_THIS, SDL_Window *window)
{
window_impl_t *impl = (window_impl_t *)window->driverdata;
EGLContext context;
EGLSurface surface;
struct {
EGLint client_version[2];
EGLint none;
} egl_ctx_attr = {
.client_version = { EGL_CONTEXT_CLIENT_VERSION, 2 },
.none = EGL_NONE
};
struct {
EGLint render_buffer[2];
EGLint none;
} egl_surf_attr = {
.render_buffer = { EGL_RENDER_BUFFER, EGL_BACK_BUFFER },
.none = EGL_NONE
};
context = eglCreateContext(egl_disp, impl->conf, EGL_NO_CONTEXT,
(EGLint *)&egl_ctx_attr);
if (context == EGL_NO_CONTEXT) {
return NULL;
}
surface = eglCreateWindowSurface(egl_disp, impl->conf,
(EGLNativeWindowType)impl->window,
(EGLint *)&egl_surf_attr);
if (surface == EGL_NO_SURFACE) {
return NULL;
}
eglMakeCurrent(egl_disp, surface, surface, context);
impl->surface = surface;
return context;
}
/**
* Sets a new value for the number of frames to display before swapping buffers.
* @param _THIS
* @param interval New interval value
* @return 0 if successful, -1 on error
*/
int
glSetSwapInterval(_THIS, int interval)
{
if (eglSwapInterval(egl_disp, interval) != EGL_TRUE) {
return -1;
}
return 0;
}
/**
* Swaps the EGL buffers associated with the given window
* @param _THIS
* @param window Window to swap buffers for
* @return 0 if successful, -1 on error
*/
int
glSwapWindow(_THIS, SDL_Window *window)
{
/* !!! FIXME: should we migrate this all over to use SDL_egl.c? */
window_impl_t *impl = (window_impl_t *)window->driverdata;
return eglSwapBuffers(egl_disp, impl->surface) == EGL_TRUE ? 0 : -1;
}
/**
* Makes the given context the current one for drawing operations.
* @param _THIS
* @param window SDL window associated with the context (maybe NULL)
* @param context The context to activate
* @return 0 if successful, -1 on error
*/
int
glMakeCurrent(_THIS, SDL_Window *window, SDL_GLContext context)
{
window_impl_t *impl;
EGLSurface surface = NULL;
if (window) {
impl = (window_impl_t *)window->driverdata;
surface = impl->surface;
}
if (eglMakeCurrent(egl_disp, surface, surface, context) != EGL_TRUE) {
return -1;
}
return 0;
}
/**
* Destroys a context.
* @param _THIS
* @param context The context to destroy
*/
void
glDeleteContext(_THIS, SDL_GLContext context)
{
eglDestroyContext(egl_disp, context);
}
/**
* Terminates access to the EGL library.
* @param _THIS
*/
void
glUnloadLibrary(_THIS)
{
eglTerminate(egl_disp);
}

133
src/video/qnx/keyboard.c Normal file
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@ -0,0 +1,133 @@
/*
Simple DirectMedia Layer
Copyright (C) 2017 BlackBerry Limited
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "../../SDL_internal.h"
#include "../../events/SDL_keyboard_c.h"
#include "SDL3/SDL_scancode.h"
#include "SDL3/SDL_events.h"
#include "sdl_qnx.h"
#include <sys/keycodes.h>
/**
* A map thta translates Screen key names to SDL scan codes.
* This map is incomplete, but should include most major keys.
*/
static int key_to_sdl[] = {
[KEYCODE_SPACE] = SDL_SCANCODE_SPACE,
[KEYCODE_APOSTROPHE] = SDL_SCANCODE_APOSTROPHE,
[KEYCODE_COMMA] = SDL_SCANCODE_COMMA,
[KEYCODE_MINUS] = SDL_SCANCODE_MINUS,
[KEYCODE_PERIOD] = SDL_SCANCODE_PERIOD,
[KEYCODE_SLASH] = SDL_SCANCODE_SLASH,
[KEYCODE_ZERO] = SDL_SCANCODE_0,
[KEYCODE_ONE] = SDL_SCANCODE_1,
[KEYCODE_TWO] = SDL_SCANCODE_2,
[KEYCODE_THREE] = SDL_SCANCODE_3,
[KEYCODE_FOUR] = SDL_SCANCODE_4,
[KEYCODE_FIVE] = SDL_SCANCODE_5,
[KEYCODE_SIX] = SDL_SCANCODE_6,
[KEYCODE_SEVEN] = SDL_SCANCODE_7,
[KEYCODE_EIGHT] = SDL_SCANCODE_8,
[KEYCODE_NINE] = SDL_SCANCODE_9,
[KEYCODE_SEMICOLON] = SDL_SCANCODE_SEMICOLON,
[KEYCODE_EQUAL] = SDL_SCANCODE_EQUALS,
[KEYCODE_LEFT_BRACKET] = SDL_SCANCODE_LEFTBRACKET,
[KEYCODE_BACK_SLASH] = SDL_SCANCODE_BACKSLASH,
[KEYCODE_RIGHT_BRACKET] = SDL_SCANCODE_RIGHTBRACKET,
[KEYCODE_GRAVE] = SDL_SCANCODE_GRAVE,
[KEYCODE_A] = SDL_SCANCODE_A,
[KEYCODE_B] = SDL_SCANCODE_B,
[KEYCODE_C] = SDL_SCANCODE_C,
[KEYCODE_D] = SDL_SCANCODE_D,
[KEYCODE_E] = SDL_SCANCODE_E,
[KEYCODE_F] = SDL_SCANCODE_F,
[KEYCODE_G] = SDL_SCANCODE_G,
[KEYCODE_H] = SDL_SCANCODE_H,
[KEYCODE_I] = SDL_SCANCODE_I,
[KEYCODE_J] = SDL_SCANCODE_J,
[KEYCODE_K] = SDL_SCANCODE_K,
[KEYCODE_L] = SDL_SCANCODE_L,
[KEYCODE_M] = SDL_SCANCODE_M,
[KEYCODE_N] = SDL_SCANCODE_N,
[KEYCODE_O] = SDL_SCANCODE_O,
[KEYCODE_P] = SDL_SCANCODE_P,
[KEYCODE_Q] = SDL_SCANCODE_Q,
[KEYCODE_R] = SDL_SCANCODE_R,
[KEYCODE_S] = SDL_SCANCODE_S,
[KEYCODE_T] = SDL_SCANCODE_T,
[KEYCODE_U] = SDL_SCANCODE_U,
[KEYCODE_V] = SDL_SCANCODE_V,
[KEYCODE_W] = SDL_SCANCODE_W,
[KEYCODE_X] = SDL_SCANCODE_X,
[KEYCODE_Y] = SDL_SCANCODE_Y,
[KEYCODE_Z] = SDL_SCANCODE_Z,
[KEYCODE_UP] = SDL_SCANCODE_UP,
[KEYCODE_DOWN] = SDL_SCANCODE_DOWN,
[KEYCODE_LEFT] = SDL_SCANCODE_LEFT,
[KEYCODE_PG_UP] = SDL_SCANCODE_PAGEUP,
[KEYCODE_PG_DOWN] = SDL_SCANCODE_PAGEDOWN,
[KEYCODE_RIGHT] = SDL_SCANCODE_RIGHT,
[KEYCODE_RETURN] = SDL_SCANCODE_RETURN,
[KEYCODE_TAB] = SDL_SCANCODE_TAB,
[KEYCODE_ESCAPE] = SDL_SCANCODE_ESCAPE,
};
/**
* Called from the event dispatcher when a keyboard event is encountered.
* Translates the event such that it can be handled by SDL.
* @param event Screen keyboard event
*/
void
handleKeyboardEvent(screen_event_t event)
{
int val;
SDL_Scancode scancode;
// Get the key value.
if (screen_get_event_property_iv(event, SCREEN_PROPERTY_SYM, &val) < 0) {
return;
}
// Skip unrecognized keys.
if ((val < 0) || (val >= SDL_TABLESIZE(key_to_sdl))) {
return;
}
// Translate to an SDL scan code.
scancode = key_to_sdl[val];
if (scancode == 0) {
return;
}
// Get event flags (key state).
if (screen_get_event_property_iv(event, SCREEN_PROPERTY_FLAGS, &val) < 0) {
return;
}
// Propagate the event to SDL.
// FIXME:
// Need to handle more key states (such as key combinations).
if (val & KEY_DOWN) {
SDL_SendKeyboardKey(0, SDL_PRESSED, scancode);
} else {
SDL_SendKeyboardKey(0, SDL_RELEASED, scancode);
}
}

48
src/video/qnx/sdl_qnx.h Normal file
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@ -0,0 +1,48 @@
/*
Simple DirectMedia Layer
Copyright (C) 2017 BlackBerry Limited
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#ifndef __SDL_QNX_H__
#define __SDL_QNX_H__
#include "../SDL_sysvideo.h"
#include <screen/screen.h>
#include <EGL/egl.h>
typedef struct
{
screen_window_t window;
EGLSurface surface;
EGLConfig conf;
} window_impl_t;
extern void handleKeyboardEvent(screen_event_t event);
extern int glGetConfig(EGLConfig *pconf, int *pformat);
extern int glLoadLibrary(_THIS, const char *name);
void *glGetProcAddress(_THIS, const char *proc);
extern SDL_GLContext glCreateContext(_THIS, SDL_Window *window);
extern int glSetSwapInterval(_THIS, int interval);
extern int glSwapWindow(_THIS, SDL_Window *window);
extern int glMakeCurrent(_THIS, SDL_Window * window, SDL_GLContext context);
extern void glDeleteContext(_THIS, SDL_GLContext context);
extern void glUnloadLibrary(_THIS);
#endif

357
src/video/qnx/video.c Normal file
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@ -0,0 +1,357 @@
/*
Simple DirectMedia Layer
Copyright (C) 2017 BlackBerry Limited
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "../../SDL_internal.h"
#include "../SDL_sysvideo.h"
#include "sdl_qnx.h"
static screen_context_t context;
static screen_event_t event;
/**
* Initializes the QNX video plugin.
* Creates the Screen context and event handles used for all window operations
* by the plugin.
* @param _THIS
* @return 0 if successful, -1 on error
*/
static int
videoInit(_THIS)
{
SDL_VideoDisplay display;
if (screen_create_context(&context, 0) < 0) {
return -1;
}
if (screen_create_event(&event) < 0) {
return -1;
}
SDL_zero(display);
if (SDL_AddVideoDisplay(&display, SDL_FALSE) < 0) {
return -1;
}
_this->num_displays = 1;
return 0;
}
static void
videoQuit(_THIS)
{
}
/**
* Creates a new native Screen window and associates it with the given SDL
* window.
* @param _THIS
* @param window SDL window to initialize
* @return 0 if successful, -1 on error
*/
static int
createWindow(_THIS, SDL_Window *window)
{
window_impl_t *impl;
int size[2];
int numbufs;
int format;
int usage;
impl = SDL_calloc(1, sizeof(*impl));
if (impl == NULL) {
return -1;
}
// Create a native window.
if (screen_create_window(&impl->window, context) < 0) {
goto fail;
}
// Set the native window's size to match the SDL window.
size[0] = window->w;
size[1] = window->h;
if (screen_set_window_property_iv(impl->window, SCREEN_PROPERTY_SIZE,
size) < 0) {
goto fail;
}
if (screen_set_window_property_iv(impl->window, SCREEN_PROPERTY_SOURCE_SIZE,
size) < 0) {
goto fail;
}
// Create window buffer(s).
if (window->flags & SDL_WINDOW_OPENGL) {
if (glGetConfig(&impl->conf, &format) < 0) {
goto fail;
}
numbufs = 2;
usage = SCREEN_USAGE_OPENGL_ES2;
if (screen_set_window_property_iv(impl->window, SCREEN_PROPERTY_USAGE,
&usage) < 0) {
return -1;
}
} else {
format = SCREEN_FORMAT_RGBX8888;
numbufs = 1;
}
// Set pixel format.
if (screen_set_window_property_iv(impl->window, SCREEN_PROPERTY_FORMAT,
&format) < 0) {
goto fail;
}
// Create buffer(s).
if (screen_create_window_buffers(impl->window, numbufs) < 0) {
goto fail;
}
window->driverdata = impl;
return 0;
fail:
if (impl->window) {
screen_destroy_window(impl->window);
}
SDL_free(impl);
return -1;
}
/**
* Gets a pointer to the Screen buffer associated with the given window. Note
* that the buffer is actually created in createWindow().
* @param _THIS
* @param window SDL window to get the buffer for
* @param[out] pixles Holds a pointer to the window's buffer
* @param[out] format Holds the pixel format for the buffer
* @param[out] pitch Holds the number of bytes per line
* @return 0 if successful, -1 on error
*/
static int
createWindowFramebuffer(_THIS, SDL_Window * window, Uint32 * format,
void ** pixels, int *pitch)
{
window_impl_t *impl = (window_impl_t *)window->driverdata;
screen_buffer_t buffer;
// Get a pointer to the buffer's memory.
if (screen_get_window_property_pv(impl->window, SCREEN_PROPERTY_BUFFERS,
(void **)&buffer) < 0) {
return -1;
}
if (screen_get_buffer_property_pv(buffer, SCREEN_PROPERTY_POINTER,
pixels) < 0) {
return -1;
}
// Set format and pitch.
if (screen_get_buffer_property_iv(buffer, SCREEN_PROPERTY_STRIDE,
pitch) < 0) {
return -1;
}
*format = SDL_PIXELFORMAT_RGB888;
return 0;
}
/**
* Informs the window manager that the window needs to be updated.
* @param _THIS
* @param window The window to update
* @param rects An array of reectangular areas to update
* @param numrects Rect array length
* @return 0 if successful, -1 on error
*/
static int
updateWindowFramebuffer(_THIS, SDL_Window *window, const SDL_Rect *rects,
int numrects)
{
window_impl_t *impl = (window_impl_t *)window->driverdata;
screen_buffer_t buffer;
if (screen_get_window_property_pv(impl->window, SCREEN_PROPERTY_BUFFERS,
(void **)&buffer) < 0) {
return -1;
}
screen_post_window(impl->window, buffer, numrects, (int *)rects, 0);
screen_flush_context(context, 0);
return 0;
}
/**
* Runs the main event loop.
* @param _THIS
*/
static void
pumpEvents(_THIS)
{
int type;
for (;;) {
if (screen_get_event(context, event, 0) < 0) {
break;
}
if (screen_get_event_property_iv(event, SCREEN_PROPERTY_TYPE, &type)
< 0) {
break;
}
if (type == SCREEN_EVENT_NONE) {
break;
}
switch (type) {
case SCREEN_EVENT_KEYBOARD:
handleKeyboardEvent(event);
break;
default:
break;
}
}
}
/**
* Updates the size of the native window using the geometry of the SDL window.
* @param _THIS
* @param window SDL window to update
*/
static void
setWindowSize(_THIS, SDL_Window *window)
{
window_impl_t *impl = (window_impl_t *)window->driverdata;
int size[2];
size[0] = window->w;
size[1] = window->h;
screen_set_window_property_iv(impl->window, SCREEN_PROPERTY_SIZE, size);
screen_set_window_property_iv(impl->window, SCREEN_PROPERTY_SOURCE_SIZE,
size);
}
/**
* Makes the native window associated with the given SDL window visible.
* @param _THIS
* @param window SDL window to update
*/
static void
showWindow(_THIS, SDL_Window *window)
{
window_impl_t *impl = (window_impl_t *)window->driverdata;
const int visible = 1;
screen_set_window_property_iv(impl->window, SCREEN_PROPERTY_VISIBLE,
&visible);
}
/**
* Makes the native window associated with the given SDL window invisible.
* @param _THIS
* @param window SDL window to update
*/
static void
hideWindow(_THIS, SDL_Window *window)
{
window_impl_t *impl = (window_impl_t *)window->driverdata;
const int visible = 0;
screen_set_window_property_iv(impl->window, SCREEN_PROPERTY_VISIBLE,
&visible);
}
/**
* Destroys the native window associated with the given SDL window.
* @param _THIS
* @param window SDL window that is being destroyed
*/
static void
destroyWindow(_THIS, SDL_Window *window)
{
window_impl_t *impl = (window_impl_t *)window->driverdata;
if (impl) {
screen_destroy_window(impl->window);
window->driverdata = NULL;
}
}
/**
* Frees the plugin object created by createDevice().
* @param device Plugin object to free
*/
static void
deleteDevice(SDL_VideoDevice *device)
{
SDL_free(device);
}
/**
* Creates the QNX video plugin used by SDL.
* @return Initialized device if successful, NULL otherwise
*/
static SDL_VideoDevice *
createDevice()
{
SDL_VideoDevice *device;
device = (SDL_VideoDevice *)SDL_calloc(1, sizeof(SDL_VideoDevice));
if (device == NULL) {
return NULL;
}
device->driverdata = NULL;
device->VideoInit = videoInit;
device->VideoQuit = videoQuit;
device->CreateSDLWindow = createWindow;
device->CreateWindowFramebuffer = createWindowFramebuffer;
device->UpdateWindowFramebuffer = updateWindowFramebuffer;
device->SetWindowSize = setWindowSize;
device->ShowWindow = showWindow;
device->HideWindow = hideWindow;
device->PumpEvents = pumpEvents;
device->DestroyWindow = destroyWindow;
device->GL_LoadLibrary = glLoadLibrary;
device->GL_GetProcAddress = glGetProcAddress;
device->GL_CreateContext = glCreateContext;
device->GL_SetSwapInterval = glSetSwapInterval;
device->GL_SwapWindow = glSwapWindow;
device->GL_MakeCurrent = glMakeCurrent;
device->GL_DeleteContext = glDeleteContext;
device->GL_UnloadLibrary = glUnloadLibrary;
device->free = deleteDevice;
return device;
}
VideoBootStrap QNX_bootstrap = {
"qnx", "QNX Screen",
createDevice
};