// 函数实现
void* render_open(int adevtype, int srate, AVSampleFormat sndfmt, int64_t ch_layout,
int vdevtype, void *surface, AVRational frate, AVPixelFormat pixfmt, int w, int h)
{
RENDER *render = (RENDER*)calloc(1, sizeof(RENDER));
if (!render) {
av_log(NULL, AV_LOG_ERROR, "failed to allocate render context !\n");
exit(0);
}
// init for video
render->video_width = w;
render->video_height = h;
render->render_wnew = w;
render->render_hnew = h;
render->frame_rate = frate;
render->pixel_fmt = pixfmt;
if (render->pixel_fmt == AV_PIX_FMT_NONE) {
render->pixel_fmt = AV_PIX_FMT_YUV420P;
}
// init for audio
render->sample_rate = srate;
render->sample_fmt = sndfmt;
render->chan_layout = ch_layout;
// init for visual effect
#if CONFIG_ENABLE_VEFFECT
render->veffect_context = veffect_create(surface);
pthread_create(&render->veffect_thread, NULL, render_veffect_thread, render);
#endif
// create adev & vdev
render->adev = adev_create(adevtype, 0, (int)((double)ADEV_SAMPLE_RATE * frate.den / frate.num + 0.5) * 4);
render->vdev = vdev_create(vdevtype, surface, 0, w, h, (int)((double)frate.num / frate.den + 0.5));
// make adev & vdev sync together
int64_t *papts = NULL;
vdev_getavpts(render->vdev, &papts, NULL);
adev_syncapts(render->adev, papts);
#ifdef WIN32
RECT rect; GetClientRect((HWND)surface, &rect);
render_setrect(render, 0, rect.left, rect.top, rect.right, rect.bottom);
render_setrect(render, 1, rect.left, rect.top, rect.right, rect.bottom);
#endif
// set default playback speed
render_setspeed(render, 100);
return render;
}
void render_getparam(void *hrender, DWORD id, void *param)
{
RENDER *render = (RENDER*)hrender;
switch (id)
{
case PARAM_AUDIO_VOLUME:
*(int*)param = render->nRenderVolume;
break;
case PARAM_VIDEO_POSITION:
{
int64_t *papts, *pvpts;
vdev_getavpts(render->vdev, &papts, &pvpts);
*(int64_t*)param = *papts > *pvpts ? *papts : *pvpts;
}
break;
case PARAM_PLAYER_SPEED:
*(int*)param = render->nRenderSpeedCur;
break;
}
}
// 函数实现
void* render_open(void *surface, AVRational frate, int pixfmt, int w, int h,
int srate, AVSampleFormat sndfmt, int64_t ch_layout)
{
RENDER *render = (RENDER*)malloc(sizeof(RENDER));
if (!render) {
log_printf(TEXT("failed to allocate render context !\n"));
exit(0);
}
// clear it first
memset(render, 0, sizeof(RENDER));
// init for video
render->nVideoWidth = w;
render->nVideoHeight = h;
render->nFramePeriod = 1000 * frate.den / frate.num;
render->FrameRate = frate;
render->PixelFormat = (AVPixelFormat)pixfmt;
// init for audio
render->nSampleRate = srate;
render->SampleFormat = sndfmt;
render->nChanLayout = ch_layout;
// create adev & vdev
render->adev = adev_create(0, (int)(44100.0 * frate.den / frate.num + 0.5) * 4);
render->vdev = vdev_create(surface, 0, 0, 0, frate.num / frate.den);
// make adev & vdev sync together
int64_t *papts = NULL;
vdev_getavpts(render->vdev, &papts, NULL);
adev_syncapts(render->adev, papts);
RECT rect; GetClientRect((HWND)surface, &rect);
render_setrect (render, rect.left, rect.top, rect.right, rect.bottom);
render_setspeed(render, 100);
return render;
}
void render_setparam(void *hrender, DWORD id, void *param)
{
RENDER *render = (RENDER*)hrender;
switch (id)
{
case PARAM_AUDIO_VOLUME:
render->nRenderVolume = *(int*)param;
adev_volume(render->adev, *(int*)param);
break;
case PARAM_VIDEO_POSITION:
if (*(int64_t*)param)
{
int64_t *papts = NULL;
int64_t *pvpts = NULL;
vdev_getavpts(render->vdev, &papts, &pvpts);
if (render->adev) *papts = *(int64_t*)param;
if (render->vdev) *pvpts = *(int64_t*)param;
}
break;
case PARAM_PLAYER_SPEED:
render_setspeed(render, *(int*)param);
break;
}
}
