static void
gst_core_media_meta_free (GstCoreMediaMeta * meta, GstBuffer * buf)
{
if (meta->image_buf != NULL) {
GstCVApi *cv = meta->ctx->cv;
cv->CVPixelBufferUnlockBaseAddress (meta->image_buf,
kCVPixelBufferLock_ReadOnly);
}
meta->ctx->cm->FigSampleBufferRelease (meta->sample_buf);
g_object_unref (meta->ctx);
}
static void
gst_core_video_meta_free (GstCoreVideoMeta * meta, GstBuffer * buf)
{
GstCVApi *cv = meta->ctx->cv;
if (meta->pixbuf != NULL) {
cv->CVPixelBufferUnlockBaseAddress (meta->pixbuf,
kCVPixelBufferLock_ReadOnly);
}
cv->CVBufferRelease (meta->cvbuf);
g_object_unref (meta->ctx);
}
static void
gst_core_video_buffer_finalize (GstMiniObject * mini_object)
{
GstCoreVideoBuffer *self = GST_CORE_VIDEO_BUFFER_CAST (mini_object);
GstCVApi *cv = self->ctx->cv;
if (self->pixbuf != NULL) {
cv->CVPixelBufferUnlockBaseAddress (self->pixbuf,
kCVPixelBufferLock_ReadOnly);
}
cv->CVBufferRelease (self->cvbuf);
g_object_unref (self->ctx);
GST_MINI_OBJECT_CLASS (gst_core_video_buffer_parent_class)->finalize
(mini_object);
}
GstBuffer *
gst_core_video_buffer_new (GstCoreMediaCtx * ctx, CVBufferRef cvbuf)
{
GstCVApi *cv = ctx->cv;
void *data;
size_t size;
CVPixelBufferRef pixbuf = NULL;
GstCoreVideoBuffer *buf;
if (CFGetTypeID (cvbuf) == cv->CVPixelBufferGetTypeID ()) {
pixbuf = (CVPixelBufferRef) cvbuf;
if (cv->CVPixelBufferLockBaseAddress (pixbuf,
kCVPixelBufferLock_ReadOnly) != kCVReturnSuccess) {
goto error;
}
data = cv->CVPixelBufferGetBaseAddress (pixbuf);
size = cv->CVPixelBufferGetBytesPerRow (pixbuf) *
cv->CVPixelBufferGetHeight (pixbuf);
} else {
/* TODO: Do we need to handle other buffer types? */
goto error;
}
buf = GST_CORE_VIDEO_BUFFER_CAST (gst_mini_object_new
(GST_TYPE_CORE_VIDEO_BUFFER));
buf->ctx = g_object_ref (ctx);
buf->cvbuf = cv->CVBufferRetain (cvbuf);
buf->pixbuf = pixbuf;
GST_BUFFER_DATA (buf) = data;
GST_BUFFER_SIZE (buf) = size;
return GST_BUFFER_CAST (buf);
error:
return NULL;
}
GstBuffer *
gst_core_media_buffer_new (GstCoreMediaCtx * ctx, CMSampleBufferRef sample_buf)
{
GstCVApi *cv = ctx->cv;
GstCMApi *cm = ctx->cm;
CVImageBufferRef image_buf;
CVPixelBufferRef pixel_buf;
CMBlockBufferRef block_buf;
Byte *data = NULL;
UInt32 size;
OSStatus status;
GstBuffer *buf;
GstCoreMediaMeta *meta;
image_buf = cm->CMSampleBufferGetImageBuffer (sample_buf);
pixel_buf = NULL;
block_buf = cm->CMSampleBufferGetDataBuffer (sample_buf);
if (image_buf != NULL &&
CFGetTypeID (image_buf) == cv->CVPixelBufferGetTypeID ()) {
pixel_buf = (CVPixelBufferRef) image_buf;
if (cv->CVPixelBufferLockBaseAddress (pixel_buf,
kCVPixelBufferLock_ReadOnly) != kCVReturnSuccess) {
goto error;
}
if (cv->CVPixelBufferIsPlanar (pixel_buf)) {
gint plane_count, plane_idx;
data = cv->CVPixelBufferGetBaseAddressOfPlane (pixel_buf, 0);
size = 0;
plane_count = cv->CVPixelBufferGetPlaneCount (pixel_buf);
for (plane_idx = 0; plane_idx != plane_count; plane_idx++) {
size += cv->CVPixelBufferGetBytesPerRowOfPlane (pixel_buf, plane_idx) *
cv->CVPixelBufferGetHeightOfPlane (pixel_buf, plane_idx);
}
} else {
data = cv->CVPixelBufferGetBaseAddress (pixel_buf);
size = cv->CVPixelBufferGetBytesPerRow (pixel_buf) *
cv->CVPixelBufferGetHeight (pixel_buf);
}
} else if (block_buf != NULL) {
status = cm->CMBlockBufferGetDataPointer (block_buf, 0, 0, 0, &data);
if (status != noErr)
goto error;
size = cm->CMBlockBufferGetDataLength (block_buf);
} else {
goto error;
}
buf = gst_buffer_new ();
meta = (GstCoreMediaMeta *) gst_buffer_add_meta (buf,
gst_core_media_meta_get_info (), NULL);
meta->ctx = g_object_ref (ctx);
meta->sample_buf = cm->FigSampleBufferRetain (sample_buf);
meta->image_buf = image_buf;
meta->pixel_buf = pixel_buf;
meta->block_buf = block_buf;
gst_buffer_append_memory (buf,
gst_memory_new_wrapped (GST_MEMORY_FLAG_NO_SHARE, data,
size, 0, size, NULL, NULL));
return buf;
error:
return NULL;
}
static GstFlowReturn
gst_vtenc_encode_frame (GstVTEnc * self, GstBuffer * buf)
{
GstCVApi *cv = self->ctx->cv;
GstVTApi *vt = self->ctx->vt;
CMTime ts, duration;
CVPixelBufferRef pbuf = NULL;
VTStatus vt_status;
GstFlowReturn ret = GST_FLOW_OK;
guint i;
self->cur_inbuf = buf;
ts = self->ctx->cm->CMTimeMake
(GST_TIME_AS_MSECONDS (GST_BUFFER_TIMESTAMP (buf)), 1000);
duration = self->ctx->cm->CMTimeMake
(GST_TIME_AS_MSECONDS (GST_BUFFER_DURATION (buf)), 1000);
if (GST_IS_CORE_MEDIA_BUFFER (buf)) {
GstCoreMediaBuffer *cmbuf = GST_CORE_MEDIA_BUFFER_CAST (buf);
pbuf = gst_core_media_buffer_get_pixel_buffer (cmbuf);
}
if (pbuf == NULL) {
CVReturn cv_ret;
cv_ret = cv->CVPixelBufferCreateWithBytes (NULL,
self->negotiated_width, self->negotiated_height,
kCVPixelFormatType_422YpCbCr8Deprecated, GST_BUFFER_DATA (buf),
self->negotiated_width * 2,
(CVPixelBufferReleaseBytesCallback) gst_buffer_unref, buf, NULL, &pbuf);
if (cv_ret != kCVReturnSuccess)
goto cv_error;
gst_buffer_ref (buf);
}
GST_OBJECT_LOCK (self);
self->expect_keyframe = CFDictionaryContainsKey (self->options,
*(vt->kVTEncodeFrameOptionKey_ForceKeyFrame));
if (self->expect_keyframe)
gst_vtenc_clear_cached_caps_downstream (self);
vt_status = self->ctx->vt->VTCompressionSessionEncodeFrame (self->session,
pbuf, ts, duration, self->options, NULL, NULL);
if (vt_status != 0) {
GST_WARNING_OBJECT (self, "VTCompressionSessionEncodeFrame returned %d",
vt_status);
}
self->ctx->vt->VTCompressionSessionCompleteFrames (self->session,
*(self->ctx->cm->kCMTimeInvalid));
GST_OBJECT_UNLOCK (self);
cv->CVPixelBufferRelease (pbuf);
self->cur_inbuf = NULL;
gst_buffer_unref (buf);
if (self->cur_outbufs->len > 0) {
GstCoreMediaBuffer *cmbuf =
GST_CORE_MEDIA_BUFFER_CAST (g_ptr_array_index (self->cur_outbufs, 0));
if (!gst_vtenc_negotiate_downstream (self, cmbuf->sample_buf))
ret = GST_FLOW_NOT_NEGOTIATED;
}
for (i = 0; i != self->cur_outbufs->len; i++) {
GstBuffer *buf = g_ptr_array_index (self->cur_outbufs, i);
if (ret == GST_FLOW_OK) {
gst_buffer_set_caps (buf, GST_PAD_CAPS (self->srcpad));
ret = gst_pad_push (self->srcpad, buf);
} else {
gst_buffer_unref (buf);
}
}
g_ptr_array_set_size (self->cur_outbufs, 0);
return ret;
cv_error:
{
self->cur_inbuf = NULL;
gst_buffer_unref (buf);
return GST_FLOW_ERROR;
}
}
GstBuffer *
gst_core_video_buffer_new (GstCoreMediaCtx * ctx, CVBufferRef cvbuf,
GstVideoInfo * vinfo)
{
GstCVApi *cv = ctx->cv;
void *data;
size_t size;
CVPixelBufferRef pixbuf = NULL;
GstBuffer *buf;
GstCoreVideoMeta *meta;
guint width, height, n_planes, i;
gsize offset[GST_VIDEO_MAX_PLANES];
gint stride[GST_VIDEO_MAX_PLANES];
if (CFGetTypeID (cvbuf) != cv->CVPixelBufferGetTypeID ())
/* TODO: Do we need to handle other buffer types? */
goto error;
pixbuf = (CVPixelBufferRef) cvbuf;
if (cv->CVPixelBufferLockBaseAddress (pixbuf,
kCVPixelBufferLock_ReadOnly) != kCVReturnSuccess) {
goto error;
}
buf = gst_buffer_new ();
/* add the corevideo meta to free the underlying corevideo buffer */
meta = (GstCoreVideoMeta *) gst_buffer_add_meta (buf,
gst_core_video_meta_get_info (), NULL);
meta->ctx = g_object_ref (ctx);
meta->cvbuf = cv->CVBufferRetain (cvbuf);
meta->pixbuf = pixbuf;
/* set stride, offset and size */
memset (&offset, 0, sizeof (offset));
memset (&stride, 0, sizeof (stride));
data = cv->CVPixelBufferGetBaseAddress (pixbuf);
height = cv->CVPixelBufferGetHeight (pixbuf);
if (cv->CVPixelBufferIsPlanar (pixbuf)) {
GstVideoInfo tmp_vinfo;
n_planes = cv->CVPixelBufferGetPlaneCount (pixbuf);
for (i = 0; i < n_planes; ++i)
stride[i] = cv->CVPixelBufferGetBytesPerRowOfPlane (pixbuf, i);
/* FIXME: don't hardcode NV12 */
gst_video_info_init (&tmp_vinfo);
gst_video_info_set_format (&tmp_vinfo,
GST_VIDEO_FORMAT_NV12, stride[0], height);
offset[1] = tmp_vinfo.offset[1];
size = tmp_vinfo.size;
} else {
n_planes = 1;
size = cv->CVPixelBufferGetBytesPerRow (pixbuf) * height;
}
gst_buffer_append_memory (buf,
gst_memory_new_wrapped (GST_MEMORY_FLAG_NO_SHARE, data,
size, 0, size, NULL, NULL));
if (vinfo) {
GstVideoMeta *video_meta;
width = vinfo->width;
video_meta =
gst_buffer_add_video_meta_full (buf, GST_VIDEO_FRAME_FLAG_NONE,
GST_VIDEO_FORMAT_NV12, width, height, n_planes, offset, stride);
}
return buf;
error:
return NULL;
}
