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v4l2slh264dec: Use the newly introduced allocator / pool

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We now allocate and free the memory needed for streaming.
This commit is contained in:
Nicolas Dufresne 2020-02-12 23:50:42 -05:00
parent c120f8b041
commit 2bac52a6fb
1 changed files with 54 additions and 1 deletions
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55
sys/v4l2codecs/gstv4l2codech264dec.c
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@ -21,7 +21,9 @@
#include <config.h>
#endif
#include "gstv4l2codecallocator.h"
#include "gstv4l2codech264dec.h"
#include "gstv4l2codecpool.h"
#include "linux/h264-ctrls.h"
GST_DEBUG_CATEGORY_STATIC (v4l2_h264dec_debug);
@ -57,6 +59,12 @@ struct _GstV4l2CodecH264Dec
gint coded_height;
guint bitdepth;
guint chroma_format_idc;
GstV4l2CodecAllocator *sink_allocator;
GstV4l2CodecAllocator *src_allocator;
GstV4l2CodecPool *src_pool;
gint min_pool_size;
gboolean has_videometa;
};
G_DEFINE_ABSTRACT_TYPE_WITH_CODE (GstV4l2CodecH264Dec,
@ -93,6 +101,17 @@ gst_v4l2_codec_h264_dec_stop (GstVideoDecoder * decoder)
{
GstV4l2CodecH264Dec *self = GST_V4L2_CODEC_H264_DEC (decoder);
if (self->sink_allocator) {
gst_v4l2_codec_allocator_detach (self->sink_allocator);
g_clear_object (&self->sink_allocator);
}
if (self->src_allocator) {
gst_v4l2_codec_allocator_detach (self->src_allocator);
g_clear_object (&self->src_allocator);
g_clear_object (&self->src_pool);
}
if (self->output_state)
gst_video_codec_state_unref (self->output_state);
self->output_state = NULL;
@ -108,7 +127,11 @@ gst_v4l2_codec_h264_dec_negotiate (GstVideoDecoder * decoder)
GST_DEBUG_OBJECT (self, "Negotiate");
/* TODO drain / reset */
if (self->sink_allocator)
gst_v4l2_codec_allocator_detach (self->sink_allocator);
if (self->src_allocator)
gst_v4l2_codec_allocator_detach (self->src_allocator);
if (!gst_v4l2_decoder_set_sink_fmt (self->decoder, V4L2_PIX_FMT_H264_SLICE,
self->coded_width, self->coded_height)) {
@ -149,6 +172,29 @@ static gboolean
gst_v4l2_codec_h264_dec_decide_allocation (GstVideoDecoder * decoder,
GstQuery * query)
{
GstV4l2CodecH264Dec *self = GST_V4L2_CODEC_H264_DEC (decoder);
guint min = 0;
self->has_videometa = gst_query_find_allocation_meta (query,
GST_VIDEO_META_API_TYPE, NULL);
g_clear_object (&self->src_pool);
g_clear_object (&self->src_allocator);
if (gst_query_get_n_allocation_pools (query) > 0)
gst_query_parse_nth_allocation_pool (query, 0, NULL, NULL, &min, NULL);
min = MAX (2, min);
self->sink_allocator = gst_v4l2_codec_allocator_new (self->decoder,
GST_PAD_SINK, self->min_pool_size + 2);
self->src_allocator = gst_v4l2_codec_allocator_new (self->decoder,
GST_PAD_SRC, self->min_pool_size + min + 4);
self->src_pool = gst_v4l2_codec_pool_new (self->src_allocator, &self->vinfo);
/* 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 */
return GST_VIDEO_DECODER_CLASS (parent_class)->decide_allocation
(decoder, query);
}
@ -165,11 +211,18 @@ gst_v4l2_codec_h264_dec_new_sequence (GstH264Decoder * decoder,
if (self->vinfo.finfo->format == GST_VIDEO_FORMAT_UNKNOWN)
negotiation_needed = TRUE;
/* TODO check if CREATE_BUFS is supported, and simply grow the pool */
if (self->min_pool_size < max_dpb_size) {
self->min_pool_size = max_dpb_size;
negotiation_needed = TRUE;
}
if (sps->frame_cropping_flag) {
crop_width = sps->crop_rect_width;
crop_height = sps->crop_rect_height;
}
/* TODO Check if current buffers are large enough, and reuse them */
if (self->display_width != crop_width || self->display_height != crop_height
|| self->coded_width != sps->width || self->coded_height != sps->height) {
self->display_width = crop_width;