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v4l2codecs: vp9: Allow inter-frames resolution change

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When the stream resolution change it is needed to negotiate
a new pools and to update the caps.
Resolution change could occurs on a new sequence or a new
picture so move resolution change detection code in a common
function.
For memory allocation reasons, only allows resolution change
on non keyframe if the driver support remove buffer feature.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/7684>
This commit is contained in:
Benjamin Gaignard 2024-09-20 13:34:34 +02:00 committed by GStreamer Marge Bot
parent 34997e88ae
commit e13065b22a
1 changed files with 61 additions and 26 deletions
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87
subprojects/gst-plugins-bad/sys/v4l2codecs/gstv4l2codecvp9dec.c
View file

@ -86,6 +86,7 @@ struct _GstV4l2CodecVp9Dec
gboolean has_videometa;
gboolean streaming;
gboolean copy_frames;
gboolean need_negotiation;
struct v4l2_ctrl_vp9_frame v4l2_vp9_frame;
struct v4l2_ctrl_vp9_compressed_hdr v4l2_delta_probs;
@ -400,9 +401,8 @@ gst_v4l2_codec_vp9_dec_open (GstVideoDecoder * decoder)
gst_v4l2_decoder_query_control_size (self->decoder,
V4L2_CID_STATELESS_VP9_COMPRESSED_HDR, NULL);
/* V4L2 does not support non-keyframe resolution change, this will ask the
* base class to drop frame until the next keyframe as a workaround. */
gst_vp9_decoder_set_non_keyframe_format_change_support (vp9dec, FALSE);
gst_vp9_decoder_set_non_keyframe_format_change_support (vp9dec,
gst_v4l2_decoder_has_remove_bufs (self->decoder));
return TRUE;
}
@ -477,9 +477,11 @@ gst_v4l2_codec_vp9_dec_negotiate (GstVideoDecoder * decoder)
GstStaticCaps *static_filter;
/* Ignore downstream renegotiation request. */
if (self->streaming)
if (!self->need_negotiation)
goto done;
self->need_negotiation = FALSE;
GST_DEBUG_OBJECT (self, "Negotiate");
gst_v4l2_codec_vp9_dec_reset_allocation (self);
@ -571,11 +573,6 @@ gst_v4l2_codec_vp9_dec_decide_allocation (GstVideoDecoder * decoder,
guint min = 0;
guint num_bitstream;
/* If we are streaming here, then it means there is nothing allocation
* related in the new state and allocation can be ignored */
if (self->streaming)
goto no_internal_changes;
g_clear_object (&self->src_pool);
g_clear_object (&self->src_allocator);
@ -621,7 +618,6 @@ gst_v4l2_codec_vp9_dec_decide_allocation (GstVideoDecoder * decoder,
self->src_pool = gst_v4l2_codec_pool_new (self->src_allocator, &self->vinfo);
no_internal_changes:
/* Our buffer pool is internal, we will let the base class create a video
* pool, and use it if we are running out of buffers or if downstream does
* not support GstVideoMeta */
@ -629,23 +625,21 @@ no_internal_changes:
(decoder, query);
}
static GstFlowReturn
gst_v4l2_codec_vp9_dec_new_sequence (GstVp9Decoder * decoder,
const GstVp9FrameHeader * frame_hdr, gint max_dpb_size)
static gboolean
gst_v4l2_codec_vp9_dec_is_format_change (GstV4l2CodecVp9Dec * self,
const GstVp9FrameHeader * frame_hdr)
{
GstV4l2CodecVp9Dec *self = GST_V4L2_CODEC_VP9_DEC (decoder);
gboolean negotiation_needed = FALSE;
gboolean ret = FALSE;
if (self->vinfo.finfo->format == GST_VIDEO_FORMAT_UNKNOWN)
negotiation_needed = TRUE;
ret = TRUE;
/* TODO Check if current buffers are large enough, and reuse them */
if (self->width != frame_hdr->width || self->height != frame_hdr->height) {
self->width = frame_hdr->width;
self->height = frame_hdr->height;
negotiation_needed = TRUE;
GST_INFO_OBJECT (self, "Resolution changed to %dx%d",
GST_DEBUG_OBJECT (self, "Resolution changed to %dx%d",
self->width, self->height);
ret = TRUE;
}
if (self->subsampling_x != frame_hdr->subsampling_x ||
@ -656,7 +650,7 @@ gst_v4l2_codec_vp9_dec_new_sequence (GstVp9Decoder * decoder,
frame_hdr->subsampling_x, frame_hdr->subsampling_y);
self->subsampling_x = frame_hdr->subsampling_x;
self->subsampling_y = frame_hdr->subsampling_y;
negotiation_needed = TRUE;
ret = TRUE;
}
if (frame_hdr->color_space != GST_VP9_CS_UNKNOWN &&
@ -665,14 +659,14 @@ gst_v4l2_codec_vp9_dec_new_sequence (GstVp9Decoder * decoder,
GST_DEBUG_OBJECT (self, "colorspace changed from %d to %d",
self->color_space, frame_hdr->color_space);
self->color_space = frame_hdr->color_space;
negotiation_needed = TRUE;
ret = TRUE;
}
if (frame_hdr->color_range != self->color_range) {
GST_DEBUG_OBJECT (self, "color range changed from %d to %d",
self->color_range, frame_hdr->color_range);
self->color_range = frame_hdr->color_range;
negotiation_needed = TRUE;
ret = TRUE;
}
if (frame_hdr->profile != GST_VP9_PROFILE_UNDEFINED &&
@ -680,23 +674,61 @@ gst_v4l2_codec_vp9_dec_new_sequence (GstVp9Decoder * decoder,
GST_DEBUG_OBJECT (self, "profile changed from %d to %d", self->profile,
frame_hdr->profile);
self->profile = frame_hdr->profile;
negotiation_needed = TRUE;
ret = TRUE;
}
if (frame_hdr->bit_depth != self->bit_depth) {
GST_DEBUG_OBJECT (self, "bit-depth changed from %d to %d",
self->bit_depth, frame_hdr->bit_depth);
self->bit_depth = frame_hdr->bit_depth;
negotiation_needed = TRUE;
ret = TRUE;
}
return ret;
}
static GstFlowReturn
gst_v4l2_codec_vp9_dec_new_picture (GstVp9Decoder * decoder,
GstVideoCodecFrame * frame, GstVp9Picture * picture)
{
GstV4l2CodecVp9Dec *self = GST_V4L2_CODEC_VP9_DEC (decoder);
self->need_negotiation =
gst_v4l2_codec_vp9_dec_is_format_change (self, &picture->frame_hdr);
if (!self->need_negotiation)
return GST_FLOW_OK;
if (!gst_video_decoder_negotiate (GST_VIDEO_DECODER (self))) {
GST_ERROR_OBJECT (self, "Failed to negotiate with downstream");
return GST_FLOW_ERROR;
}
return GST_FLOW_OK;
}
static GstFlowReturn
gst_v4l2_codec_vp9_dec_new_sequence (GstVp9Decoder * decoder,
const GstVp9FrameHeader * frame_hdr, gint max_dpb_size)
{
GstV4l2CodecVp9Dec *self = GST_V4L2_CODEC_VP9_DEC (decoder);
/* TODO Check if current buffers are large enough, and reuse them */
self->need_negotiation =
gst_v4l2_codec_vp9_dec_is_format_change (self, frame_hdr);
gst_v4l2_codec_vp9_dec_fill_dec_params (self, frame_hdr, NULL);
if (decoder->parse_compressed_headers)
gst_v4l2_codec_vp9_dec_fill_prob_updates (self, frame_hdr);
if (negotiation_needed) {
gst_v4l2_codec_vp9_dec_streamoff (self);
if (self->need_negotiation) {
/* If the negotiation request occurs on a key frame or
* remove buffer isn't supported do a stream off */
if ((frame_hdr->frame_type == GST_VP9_KEY_FRAME)
|| !gst_v4l2_decoder_has_remove_bufs (self->decoder)) {
gst_v4l2_codec_vp9_dec_streamoff (self);
}
if (!gst_video_decoder_negotiate (GST_VIDEO_DECODER (self))) {
GST_ERROR_OBJECT (self, "Failed to negotiate with downstream");
return GST_FLOW_ERROR;
@ -1131,6 +1163,7 @@ gst_v4l2_codec_vp9_dec_get_property (GObject * object, guint prop_id,
static void
gst_v4l2_codec_vp9_dec_init (GstV4l2CodecVp9Dec * self)
{
self->need_negotiation = TRUE;
}
static void
@ -1194,6 +1227,8 @@ gst_v4l2_codec_vp9_dec_subclass_init (GstV4l2CodecVp9DecClass * klass,
vp9decoder_class->new_sequence =
GST_DEBUG_FUNCPTR (gst_v4l2_codec_vp9_dec_new_sequence);
vp9decoder_class->new_picture =
GST_DEBUG_FUNCPTR (gst_v4l2_codec_vp9_dec_new_picture);
vp9decoder_class->start_picture =
GST_DEBUG_FUNCPTR (gst_v4l2_codec_vp9_dec_start_picture);
vp9decoder_class->decode_picture =