static int query_format(struct vf_instance *vf, unsigned int fmt)
{
return mp_to_vs(fmt) != pfNone;
}
static void VS_CC infiltInit(VSMap *in, VSMap *out, void **instanceData,
VSNode *node, VSCore *core, const VSAPI *vsapi)
{
struct vf_instance *vf = *instanceData;
struct vf_priv_s *p = vf->priv;
// The number of frames of our input node is obviously unknown. The user
// could for example seek any time, randomly "ending" the clip.
// This specific value was suggested by the VapourSynth developer.
int enough_for_everyone = INT_MAX / 16;
// Note: this is called from createFilter, so no need for locking.
VSVideoInfo fmt = {
.format = p->vsapi->getFormatPreset(mp_to_vs(p->fmt_in.imgfmt), p->vscore),
.width = p->fmt_in.w,
.height = p->fmt_in.h,
.numFrames = enough_for_everyone,
};
if (!fmt.format) {
p->vsapi->setError(out, "Unsupported input format.\n");
return;
}
p->vsapi->setVideoInfo(&fmt, 1, node);
p->in_node_active = true;
}
static const VSFrameRef *VS_CC infiltGetFrame(int frameno, int activationReason,
void **instanceData, void **frameData,
VSFrameContext *frameCtx, VSCore *core,
const VSAPI *vsapi)
{
struct vf_instance *vf = *instanceData;
struct vf_priv_s *p = vf->priv;
VSFrameRef *ret = NULL;
pthread_mutex_lock(&p->lock);
MP_TRACE(vf, "VS asking for frame %d (at %d)\n", frameno, p->in_frameno);
while (1) {
if (p->shutdown) {
p->vsapi->setFilterError("EOF or filter reinit/uninit", frameCtx);
MP_DBG(vf, "returning error on EOF/reset\n");
break;
}
if (p->initializing) {
MP_WARN(vf, "Frame requested during init! This is unsupported.\n"
"Returning black dummy frame with 0 duration.\n");
ret = alloc_vs_frame(p, &vf->fmt_in);
if (!ret) {
p->vsapi->setFilterError("Could not allocate VS frame", frameCtx);
break;
}
struct mp_image vsframe = map_vs_frame(p, ret, true);
mp_image_clear(&vsframe, 0, 0, vf->fmt_in.w, vf->fmt_in.h);
struct mp_image dummy = {0};
mp_image_set_params(&dummy, &vf->fmt_in);
set_vs_frame_props(p, ret, &dummy, 0, 1);
break;
}
if (frameno < p->in_frameno) {
char msg[180];
snprintf(msg, sizeof(msg),
"Frame %d requested, but only have frames starting from %d. "
"Try increasing the buffered-frames suboption.",
frameno, p->in_frameno);
MP_FATAL(vf, "%s\n", msg);
p->vsapi->setFilterError(msg, frameCtx);
break;
}
if (frameno >= p->in_frameno + MP_TALLOC_AVAIL(p->buffered)) {
// Too far in the future. Remove frames, so that the main thread can
// queue new frames.
if (p->num_buffered) {
drain_oldest_buffered_frame(p);
pthread_cond_broadcast(&p->wakeup);
if (vf->chain->wakeup_callback)
vf->chain->wakeup_callback(vf->chain->wakeup_callback_ctx);
continue;
}
}
if (frameno >= p->in_frameno + p->num_buffered) {
// If we think EOF was reached, don't wait for new input, and assume
// the VS filter has reached EOF.
if (p->eof) {
p->shutdown = true;
continue;
}
}
if (frameno < p->in_frameno + p->num_buffered) {
struct mp_image *img = p->buffered[frameno - p->in_frameno];
ret = alloc_vs_frame(p, &img->params);
if (!ret) {
p->vsapi->setFilterError("Could not allocate VS frame", frameCtx);
break;
}
struct mp_image vsframe = map_vs_frame(p, ret, true);
mp_image_copy(&vsframe, img);
int res = 1e6;
int dur = img->pts * res + 0.5;
set_vs_frame_props(p, ret, img, dur, res);
break;
}
pthread_cond_wait(&p->wakeup, &p->lock);
}
pthread_cond_broadcast(&p->wakeup);
pthread_mutex_unlock(&p->lock);
return ret;
}
static void VS_CC infiltFree(void *instanceData, VSCore *core, const VSAPI *vsapi)
{
struct vf_instance *vf = instanceData;
struct vf_priv_s *p = vf->priv;
pthread_mutex_lock(&p->lock);
p->in_node_active = false;
pthread_cond_broadcast(&p->wakeup);
pthread_mutex_unlock(&p->lock);
}
// number of getAsyncFrame calls in progress
// must be called with p->lock held
static int num_requested(struct vf_priv_s *p)
{
int r = 0;
for (int n = 0; n < p->max_requests; n++)
r += p->requested[n] == &dummy_img;
return r;
}
static VSFrameRef *alloc_vs_frame(struct vf_priv_s *p, struct mp_image_params *fmt)
{
const VSFormat *vsfmt =
p->vsapi->getFormatPreset(mp_to_vs(fmt->imgfmt), p->vscore);
return p->vsapi->newVideoFrame(vsfmt, fmt->w, fmt->h, NULL, p->vscore);
}
static void VS_CC infiltInit(VSMap *in, VSMap *out, void **instanceData,
VSNode *node, VSCore *core, const VSAPI *vsapi)
{
struct vf_instance *vf = *instanceData;
struct vf_priv_s *p = vf->priv;
// Note: this is called from createFilter, so no need for locking.
VSVideoInfo fmt = {
.format = p->vsapi->getFormatPreset(mp_to_vs(p->fmt_in.imgfmt), p->vscore),
.width = p->fmt_in.w,
.height = p->fmt_in.h,
};
if (!fmt.format) {
p->vsapi->setError(out, "Unsupported input format.\n");
return;
}
p->vsapi->setVideoInfo(&fmt, 1, node);
p->in_node_active = true;
}
static const VSFrameRef *VS_CC infiltGetFrame(int frameno, int activationReason,
void **instanceData, void **frameData,
VSFrameContext *frameCtx, VSCore *core,
const VSAPI *vsapi)
{
struct vf_instance *vf = *instanceData;
struct vf_priv_s *p = vf->priv;
VSFrameRef *ret = NULL;
pthread_mutex_lock(&p->lock);
while (1) {
if (p->shutdown)
break;
if (frameno < p->in_frameno) {
p->vsapi->setFilterError("Requesting a frame too far in the past. "
"Try increasing the maxbuffer suboption",
frameCtx);
break;
}
if (frameno >= p->in_frameno + MP_TALLOC_ELEMS(p->buffered)) {
// Too far in the future. Remove frames, so that the main thread can
// queue new frames.
if (p->num_buffered) {
drain_oldest_buffered_frame(p);
pthread_cond_broadcast(&p->wakeup);
continue;
}
}
if (frameno < p->in_frameno + p->num_buffered) {
struct mp_image *img = p->buffered[frameno - p->in_frameno];
const VSFormat *vsfmt =
vsapi->getFormatPreset(mp_to_vs(img->imgfmt), core);
ret = vsapi->newVideoFrame(vsfmt, img->w, img->h, NULL, core);
if (!ret) {
p->vsapi->setFilterError("Could not allocate VS frame", frameCtx);
break;
}
struct mp_image vsframe = map_vs_frame(p, ret, true);
mp_image_copy(&vsframe, img);
VSMap *map = p->vsapi->getFramePropsRW(ret);
if (map) {
int res = 1e6;
int dur = img->pts * res + 0.5;
p->vsapi->propSetInt(map, "_DurationNum", dur, 0);
p->vsapi->propSetInt(map, "_DurationDen", res, 0);
copy_mp_to_vs_frame_props(p, map, img);
}
break;
}
pthread_cond_wait(&p->wakeup, &p->lock);
}
pthread_mutex_unlock(&p->lock);
return ret;
}
static void VS_CC infiltFree(void *instanceData, VSCore *core, const VSAPI *vsapi)
{
struct vf_instance *vf = instanceData;
struct vf_priv_s *p = vf->priv;
pthread_mutex_lock(&p->lock);
p->in_node_active = false;
pthread_cond_broadcast(&p->wakeup);
pthread_mutex_unlock(&p->lock);
}
static void destroy_vs(struct vf_instance *vf)
{
struct vf_priv_s *p = vf->priv;
// Wait until our frame callback returns.
pthread_mutex_lock(&p->lock);
p->shutdown = true;
pthread_cond_broadcast(&p->wakeup);
while (p->getting_frame)
pthread_cond_wait(&p->wakeup, &p->lock);
pthread_mutex_unlock(&p->lock);
if (p->in_node)
p->vsapi->freeNode(p->in_node);
if (p->out_node)
p->vsapi->freeNode(p->out_node);
p->in_node = p->out_node = NULL;
if (p->se)
vsscript_freeScript(p->se);
p->se = NULL;
p->vsapi = NULL;
p->vscore = NULL;
assert(!p->in_node_active);
p->shutdown = false;
talloc_free(p->got_frame);
p->got_frame = NULL;
// Kill queued frames too
for (int n = 0; n < p->num_buffered; n++)
talloc_free(p->buffered[n]);
p->num_buffered = 0;
talloc_free(p->next_image);
p->next_image = NULL;
p->prev_pts = MP_NOPTS_VALUE;
p->out_frameno = p->in_frameno = 0;
}
static int reinit_vs(struct vf_instance *vf)
{
struct vf_priv_s *p = vf->priv;
VSMap *vars = NULL, *in = NULL, *out = NULL;
int res = -1;
destroy_vs(vf);
// First load an empty script to get a VSScript, so that we get the vsapi
// and vscore.
if (vsscript_evaluateScript(&p->se, "", NULL, 0))
goto error;
p->vsapi = vsscript_getVSApi();
p->vscore = vsscript_getCore(p->se);
if (!p->vsapi || !p->vscore)
goto error;
in = p->vsapi->createMap();
out = p->vsapi->createMap();
vars = p->vsapi->createMap();
if (!in || !out || !vars)
goto error;
p->vsapi->createFilter(in, out, "Input", infiltInit, infiltGetFrame,
infiltFree, fmSerial, 0, vf, p->vscore);
int vserr;
p->in_node = p->vsapi->propGetNode(out, "clip", 0, &vserr);
if (!p->in_node)
goto error;
if (p->vsapi->propSetNode(vars, "video_in", p->in_node, 0))
goto error;
vsscript_setVariable(p->se, vars);
if (vsscript_evaluateFile(&p->se, p->cfg_file, 0)) {
MP_FATAL(vf, "Script evaluation failed:\n%s\n", vsscript_getError(p->se));
goto error;
}
p->out_node = vsscript_getOutput(p->se, 0);
if (!p->out_node)
goto error;
const VSVideoInfo *vi = p->vsapi->getVideoInfo(p->out_node);
if (!isConstantFormat(vi)) {
MP_FATAL(vf, "Video format is required to be constant.\n");
goto error;
}
res = 0;
error:
if (p->vsapi) {
p->vsapi->freeMap(in);
p->vsapi->freeMap(out);
p->vsapi->freeMap(vars);
}
if (res < 0)
destroy_vs(vf);
return res;
}
static int config(struct vf_instance *vf, int width, int height,
int d_width, int d_height, unsigned int flags,
unsigned int fmt)
{
struct vf_priv_s *p = vf->priv;
p->fmt_in = (struct mp_image_params){
.imgfmt = fmt,
.w = width,
.h = height,
};
if (reinit_vs(vf) < 0)
return 0;
const VSVideoInfo *vi = p->vsapi->getVideoInfo(p->out_node);
fmt = mp_from_vs(vi->format->id);
if (!fmt) {
MP_FATAL(vf, "Unsupported output format.\n");
destroy_vs(vf);
return 0;
}
vf_rescale_dsize(&d_width, &d_height, width, height, vi->width, vi->height);
return vf_next_config(vf, vi->width, vi->height, d_width, d_height, flags, fmt);
}
static int query_format(struct vf_instance *vf, unsigned int fmt)
{
return mp_to_vs(fmt) != pfNone ? VFCAP_CSP_SUPPORTED : 0;
}
static int control(vf_instance_t *vf, int request, void *data)
{
switch (request) {
case VFCTRL_SEEK_RESET:
if (reinit_vs(vf) < 0)
return CONTROL_ERROR;
return CONTROL_OK;
}
return CONTROL_UNKNOWN;
}
static void uninit(struct vf_instance *vf)
{
struct vf_priv_s *p = vf->priv;
destroy_vs(vf);
vsscript_finalize();
pthread_cond_destroy(&p->wakeup);
pthread_mutex_destroy(&p->lock);
}
static int vf_open(vf_instance_t *vf)
{
struct vf_priv_s *p = vf->priv;
if (!vsscript_init()) {
MP_FATAL(vf, "Could not initialize VapourSynth scripting.\n");
return 0;
}
if (!p->cfg_file || !p->cfg_file[0]) {
MP_FATAL(vf, "'file' parameter must be set.\n");
return 0;
}
pthread_mutex_init(&p->lock, NULL);
pthread_cond_init(&p->wakeup, NULL);
vf->reconfig = NULL;
vf->config = config;
vf->filter_ext = filter_ext;
vf->filter = NULL;
vf->query_format = query_format;
vf->control = control;
vf->uninit = uninit;
p->buffered = talloc_array(vf, struct mp_image *, p->cfg_maxbuffer);
return 1;
}
#define OPT_BASE_STRUCT struct vf_priv_s
static const m_option_t vf_opts_fields[] = {
OPT_STRING("file", cfg_file, 0),
OPT_INTRANGE("maxbuffer", cfg_maxbuffer, 0, 1, 9999, OPTDEF_INT(5)),
{0}
};
const vf_info_t vf_info_vapoursynth = {
.description = "vapoursynth bridge",
.name = "vapoursynth",
.open = vf_open,
.priv_size = sizeof(struct vf_priv_s),
.options = vf_opts_fields,
};
static int query_format(struct vf_instance *vf, unsigned int fmt)
{
return mp_to_vs(fmt) != pfNone ? VFCAP_CSP_SUPPORTED : 0;
}
static void VS_CC infiltInit(VSMap *in, VSMap *out, void **instanceData,
VSNode *node, VSCore *core, const VSAPI *vsapi)
{
struct vf_instance *vf = *instanceData;
struct vf_priv_s *p = vf->priv;
// Note: this is called from createFilter, so no need for locking.
VSVideoInfo fmt = {
.format = p->vsapi->getFormatPreset(mp_to_vs(p->fmt_in.imgfmt), p->vscore),
.width = p->fmt_in.w,
.height = p->fmt_in.h,
};
if (!fmt.format) {
p->vsapi->setError(out, "Unsupported input format.\n");
return;
}
p->vsapi->setVideoInfo(&fmt, 1, node);
p->in_node_active = true;
}
static const VSFrameRef *VS_CC infiltGetFrame(int frameno, int activationReason,
void **instanceData, void **frameData,
VSFrameContext *frameCtx, VSCore *core,
const VSAPI *vsapi)
{
struct vf_instance *vf = *instanceData;
struct vf_priv_s *p = vf->priv;
VSFrameRef *ret = NULL;
pthread_mutex_lock(&p->lock);
MP_DBG(vf, "VS asking for frame %d (at %d)\n", frameno, p->in_frameno);
while (1) {
if (p->shutdown) {
p->vsapi->setFilterError("EOF or filter reinit/uninit", frameCtx);
break;
}
if (frameno < p->in_frameno) {
char msg[180];
snprintf(msg, sizeof(msg),
"Frame %d requested, but only have frames starting from %d. "
"Try increasing the buffered-frames suboption.",
frameno, p->in_frameno);
MP_FATAL(vf, "%s\n", msg);
p->vsapi->setFilterError(msg, frameCtx);
break;
}
if (frameno >= p->in_frameno + MP_TALLOC_ELEMS(p->buffered)) {
// Too far in the future. Remove frames, so that the main thread can
// queue new frames.
if (p->num_buffered) {
drain_oldest_buffered_frame(p);
pthread_cond_broadcast(&p->wakeup);
continue;
}
}
if (frameno < p->in_frameno + p->num_buffered) {
struct mp_image *img = p->buffered[frameno - p->in_frameno];
const VSFormat *vsfmt =
vsapi->getFormatPreset(mp_to_vs(img->imgfmt), core);
ret = vsapi->newVideoFrame(vsfmt, img->w, img->h, NULL, core);
if (!ret) {
p->vsapi->setFilterError("Could not allocate VS frame", frameCtx);
break;
}
struct mp_image vsframe = map_vs_frame(p, ret, true);
mp_image_copy(&vsframe, img);
VSMap *map = p->vsapi->getFramePropsRW(ret);
if (map) {
int res = 1e6;
int dur = img->pts * res + 0.5;
p->vsapi->propSetInt(map, "_DurationNum", dur, 0);
p->vsapi->propSetInt(map, "_DurationDen", res, 0);
copy_mp_to_vs_frame_props(p, map, img);
}
break;
}
pthread_cond_wait(&p->wakeup, &p->lock);
}
pthread_mutex_unlock(&p->lock);
return ret;
}
static void VS_CC infiltFree(void *instanceData, VSCore *core, const VSAPI *vsapi)
{
struct vf_instance *vf = instanceData;
struct vf_priv_s *p = vf->priv;
pthread_mutex_lock(&p->lock);
p->in_node_active = false;
pthread_cond_broadcast(&p->wakeup);
pthread_mutex_unlock(&p->lock);
}
// number of getAsyncFrame calls in progress
// must be called with p->lock held
static int num_requested(struct vf_priv_s *p)
{
int r = 0;
for (int n = 0; n < p->max_requests; n++)
r += p->requested[n] == &dummy_img;
return r;
}
