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Code Issues 1 Projects Releases Wiki Activity

vah264enc: Avoid mapping coded buffer twice.

Browse source 
Currently for copying the coded buffer onto a GStreamer buffer, the
coded buffer is mapped two times: one for getting the size, and later
for do the actual copy. We can avoid this by doing directly in the
element rather than in the general encoder object.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1845>
This commit is contained in:
Víctor Manuel Jáquez Leal 2022-03-03 09:59:28 +01:00 committed by GStreamer Marge Bot
parent 81b99c37d8
commit 1a19a835a9
3 changed files with 38 additions and 98 deletions
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84
subprojects/gst-plugins-bad/sys/va/gstvaencoder.c
View file

@ -1114,90 +1114,6 @@ gst_va_encode_picture_get_raw_surface (GstVaEncodePicture * pic)
return gst_va_buffer_get_surface (pic->raw_buffer);
}
gint
gst_va_encode_picture_get_coded_size (GstVaEncodePicture * pic)
{
VADisplay dpy;
VACodedBufferSegment *segment_list;
VACodedBufferSegment *segment;
VAStatus status;
gint size;
g_return_val_if_fail (pic, -1);
g_return_val_if_fail (pic->coded_buffer != VA_INVALID_ID, -1);
dpy = gst_va_display_get_va_dpy (pic->display);
status = vaMapBuffer (dpy, pic->coded_buffer, (gpointer *) & segment_list);
if (status != VA_STATUS_SUCCESS) {
GST_WARNING ("coded buffer vaMapBuffer: %s", vaErrorStr (status));
return -1;
}
if (!segment_list) {
GST_WARNING ("coded buffer has no segment list");
return -1;
}
size = 0;
for (segment = segment_list; segment != NULL; segment = segment->next)
size += segment->size;
status = vaUnmapBuffer (dpy, pic->coded_buffer);
if (status != VA_STATUS_SUCCESS) {
GST_WARNING ("coded buffer vaUnmapBuffer: %s", vaErrorStr (status));
return -1;
}
return size;
}
gboolean
gst_va_encode_picture_copy_coded_data (GstVaEncodePicture * pic,
GstBuffer * dest)
{
VADisplay dpy;
VACodedBufferSegment *segment_list;
VACodedBufferSegment *segment;
VAStatus status;
goffset offset;
gsize size;
g_return_val_if_fail (pic, FALSE);
g_return_val_if_fail (dest && GST_IS_BUFFER (dest), FALSE);
g_return_val_if_fail (pic->coded_buffer != VA_INVALID_ID, FALSE);
dpy = gst_va_display_get_va_dpy (pic->display);
status = vaMapBuffer (dpy, pic->coded_buffer, (gpointer *) & segment_list);
if (status != VA_STATUS_SUCCESS) {
GST_WARNING ("coded buffer vaMapBuffer: %s", vaErrorStr (status));
return FALSE;
}
if (!segment_list) {
GST_WARNING ("coded buffer has no segment list");
return FALSE;
}
offset = 0;
for (segment = segment_list; segment != NULL; segment = segment->next) {
size = gst_buffer_fill (dest, offset, segment->buf, segment->size);
if (size != segment->size) {
GST_WARNING ("Segment size is %d, but copied %" G_GSIZE_FORMAT,
segment->size, size);
break;
}
offset += segment->size;
}
status = vaUnmapBuffer (dpy, pic->coded_buffer);
if (status != VA_STATUS_SUCCESS)
GST_WARNING ("coded buffer vaUnmapBuffer: %s", vaErrorStr (status));
return TRUE;
}
GstVaEncodePicture *
gst_va_encode_picture_new (GstVaEncoder * self, GstBuffer * raw_buffer)
{

3
subprojects/gst-plugins-bad/sys/va/gstvaencoder.h
View file

@ -107,8 +107,5 @@ GstVaEncodePicture * gst_va_encode_picture_new (GstVaEncoder * self,
void gst_va_encode_picture_free (GstVaEncodePicture * pic);
VASurfaceID gst_va_encode_picture_get_raw_surface (GstVaEncodePicture * pic);
VASurfaceID gst_va_encode_picture_get_reconstruct_surface (GstVaEncodePicture * pic);
gint gst_va_encode_picture_get_coded_size (GstVaEncodePicture * pic);
gboolean gst_va_encode_picture_copy_coded_data (GstVaEncodePicture * pic,
GstBuffer * dest);
G_END_DECLS

49
subprojects/gst-plugins-bad/sys/va/gstvah264enc.c
View file

@ -3211,27 +3211,43 @@ _push_buffer_to_downstream (GstVaH264Enc * self, GstVaH264EncFrame * frame_enc)
{
GstVideoCodecFrame *frame;
GstFlowReturn ret;
gint coded_size;
GstBuffer *buf = NULL;
guint coded_size;
goffset offset;
GstBuffer *buf;
VADisplay dpy;
VASurfaceID surface;
VADisplay dpy = gst_va_display_get_va_dpy (self->display);
VAStatus status;
VACodedBufferSegment *seg, *seg_list;
frame = frame_enc->frame;
dpy = gst_va_display_get_va_dpy (self->display);
/* Wait for encoding to finish */
surface = gst_va_encode_picture_get_raw_surface (frame_enc->picture);
status = vaSyncSurface (dpy, surface);
if (status != VA_STATUS_SUCCESS) {
GST_WARNING ("vaSyncSurface: %s", vaErrorStr (status));
GST_WARNING_OBJECT (self, "vaSyncSurface: %s", vaErrorStr (status));
goto error;
}
coded_size = gst_va_encode_picture_get_coded_size (frame_enc->picture);
if (coded_size <= 0) {
GST_ERROR_OBJECT (self, "Failed to get the coded size,");
seg_list = NULL;
status = vaMapBuffer (dpy, frame_enc->picture->coded_buffer,
(gpointer *) & seg_list);
if (status != VA_STATUS_SUCCESS) {
GST_WARNING_OBJECT (self, "vaMapBuffer: %s", vaErrorStr (status));
goto error;
}
if (!seg_list) {
GST_WARNING_OBJECT (self, "coded buffer has no segment list");
goto error;
}
coded_size = 0;
for (seg = seg_list; seg; seg = seg->next)
coded_size += seg->size;
buf = gst_video_encoder_allocate_output_buffer (GST_VIDEO_ENCODER_CAST (self),
coded_size);
if (!buf) {
@ -3240,12 +3256,23 @@ _push_buffer_to_downstream (GstVaH264Enc * self, GstVaH264EncFrame * frame_enc)
goto error;
}
if (!gst_va_encode_picture_copy_coded_data (frame_enc->picture, buf)) {
GST_ERROR_OBJECT (self, "Failed to copy output buffer, size %d",
coded_size);
goto error;
offset = 0;
for (seg = seg_list; seg; seg = seg->next) {
gsize write_size;
write_size = gst_buffer_fill (buf, offset, seg->buf, seg->size);
if (write_size != seg->size) {
GST_WARNING_OBJECT (self, "Segment size is %d, but copied %"
G_GSIZE_FORMAT, seg->size, write_size);
break;
}
offset += seg->size;
}
status = vaUnmapBuffer (dpy, frame_enc->picture->coded_buffer);
if (status != VA_STATUS_SUCCESS)
GST_WARNING ("vaUnmapBuffer: %s", vaErrorStr (status));
frame->pts =
self->start_pts + self->frame_duration * frame_enc->total_frame_count;
/* The PTS should always be later than the DTS. */