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v4l2slh264dec: Factor out bitstream allocation
No functional changes. Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1395>
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parent
779f331bd4
commit
bc1a0323a9
1 changed files with 30 additions and 20 deletions
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@ -723,6 +723,34 @@ gst_v4l2_codec_h264_dec_new_sequence (GstH264Decoder * decoder,
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return TRUE;
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}
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static gboolean
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gst_v4l2_codec_h264_dec_ensure_bitstream (GstV4l2CodecH264Dec * self)
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{
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if (self->bitstream)
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goto done;
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self->bitstream = gst_v4l2_codec_allocator_alloc (self->sink_allocator);
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if (!self->bitstream) {
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GST_ELEMENT_ERROR (self, RESOURCE, NO_SPACE_LEFT,
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("Not enough memory to decode H264 stream."), (NULL));
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return FALSE;
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}
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if (!gst_memory_map (self->bitstream, &self->bitstream_map, GST_MAP_WRITE)) {
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GST_ELEMENT_ERROR (self, RESOURCE, WRITE,
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("Could not access bitstream memory for writing"), (NULL));
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g_clear_pointer (&self->bitstream, gst_memory_unref);
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return FALSE;
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}
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done:
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/* We use this field to track how much we have written */
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self->bitstream_map.size = 0;
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return TRUE;
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}
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static gboolean
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gst_v4l2_codec_h264_dec_start_picture (GstH264Decoder * decoder,
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GstH264Picture * picture, GstH264Slice * slice, GstH264Dpb * dpb)
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@ -733,26 +761,8 @@ gst_v4l2_codec_h264_dec_start_picture (GstH264Decoder * decoder,
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if (!self->sink_allocator)
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return FALSE;
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/* Ensure we have a bitstream to write into */
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if (!self->bitstream) {
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self->bitstream = gst_v4l2_codec_allocator_alloc (self->sink_allocator);
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if (!self->bitstream) {
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GST_ELEMENT_ERROR (decoder, RESOURCE, NO_SPACE_LEFT,
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("Not enough memory to decode H264 stream."), (NULL));
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if (!gst_v4l2_codec_h264_dec_ensure_bitstream (self))
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return FALSE;
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}
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if (!gst_memory_map (self->bitstream, &self->bitstream_map, GST_MAP_WRITE)) {
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GST_ELEMENT_ERROR (decoder, RESOURCE, WRITE,
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("Could not access bitstream memory for writing"), (NULL));
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g_clear_pointer (&self->bitstream, gst_memory_unref);
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return FALSE;
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}
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}
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/* We use this field to track how much we have written */
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self->bitstream_map.size = 0;
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gst_v4l2_codec_h264_dec_fill_pps (self, slice->header.pps);
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gst_v4l2_codec_h264_dec_fill_scaling_matrix (self, slice->header.pps);
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