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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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423 lines
10 KiB
C
423 lines
10 KiB
C
/* GStreamer
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*
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* Copyright (C) 2009 Carl-Anton Ingmarsson <ca.ingmarsson@gmail.com>.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include "gsth264dpb.h"
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/* Properties */
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enum
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{
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PROP_0,
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PROP_NUM_REF_FRAMES,
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PROP_MAX_LONGTERM_IDX
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};
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GST_DEBUG_CATEGORY_STATIC (h264dpb_debug);
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#define GST_CAT_DEFAULT h264dpb_debug
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#define DEBUG_INIT \
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GST_DEBUG_CATEGORY_INIT (h264dpb_debug, "h264dpb", 0, \
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"H264 DPB");
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G_DEFINE_TYPE_WITH_CODE (GstH264DPB, gst_h264_dpb, G_TYPE_OBJECT, DEBUG_INIT);
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void
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gst_h264_dpb_fill_reference_frames (GstH264DPB * dpb,
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VdpReferenceFrameH264 reference_frames[16])
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{
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GstH264Frame **frames;
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guint i;
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frames = dpb->frames;
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for (i = 0; i < dpb->n_frames; i++) {
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GstH264Frame *frame = frames[i];
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reference_frames[i].surface =
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GST_VDP_VIDEO_BUFFER (GST_VIDEO_FRAME_CAST (frame)->src_buffer)->
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surface;
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reference_frames[i].is_long_term = frame->is_long_term;
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reference_frames[i].top_is_reference = frame->is_reference;
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reference_frames[i].bottom_is_reference = frame->is_reference;
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reference_frames[i].field_order_cnt[0] = frame->poc;
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reference_frames[i].field_order_cnt[1] = frame->poc;
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reference_frames[i].frame_idx = frame->frame_idx;
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}
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for (i = dpb->n_frames; i < 16; i++) {
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reference_frames[i].surface = VDP_INVALID_HANDLE;
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reference_frames[i].top_is_reference = VDP_FALSE;
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reference_frames[i].bottom_is_reference = VDP_FALSE;
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}
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}
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static void
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gst_h264_dpb_remove (GstH264DPB * dpb, guint idx)
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{
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GstH264Frame **frames;
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guint i;
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frames = dpb->frames;
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gst_video_frame_unref (GST_VIDEO_FRAME_CAST (frames[idx]));
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dpb->n_frames--;
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for (i = idx; i < dpb->n_frames; i++)
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frames[i] = frames[i + 1];
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}
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static GstFlowReturn
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gst_h264_dpb_output (GstH264DPB * dpb, guint idx)
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{
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GstFlowReturn ret;
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GstH264Frame *frame = dpb->frames[idx];
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gst_video_frame_ref (GST_VIDEO_FRAME_CAST (frame));
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ret = dpb->output (dpb, frame, dpb->user_data);
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frame->output_needed = FALSE;
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if (!frame->is_reference)
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gst_h264_dpb_remove (dpb, idx);
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return ret;
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}
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static gboolean
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gst_h264_dpb_bump (GstH264DPB * dpb, guint poc, GstFlowReturn * ret)
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{
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GstH264Frame **frames;
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guint i;
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gint bump_idx;
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frames = dpb->frames;
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bump_idx = -1;
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for (i = 0; i < dpb->n_frames; i++) {
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if (frames[i]->output_needed) {
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bump_idx = i;
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break;
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}
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}
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if (bump_idx != -1) {
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for (i = bump_idx + 1; i < dpb->n_frames; i++) {
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if (frames[i]->output_needed && (frames[i]->poc < frames[bump_idx]->poc)) {
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bump_idx = i;
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}
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}
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if (frames[bump_idx]->poc < poc) {
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*ret = gst_h264_dpb_output (dpb, bump_idx);
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return TRUE;
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}
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}
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return FALSE;
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}
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GstFlowReturn
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gst_h264_dpb_add (GstH264DPB * dpb, GstH264Frame * h264_frame)
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{
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GstFlowReturn ret;
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GST_DEBUG ("add frame with poc: %d", h264_frame->poc);
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if (h264_frame->is_reference && h264_frame->is_long_term &&
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(h264_frame->frame_idx > dpb->max_longterm_frame_idx))
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h264_frame->is_reference = FALSE;
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if (h264_frame->is_reference) {
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ret = GST_FLOW_OK;
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while (dpb->n_frames == dpb->max_frames) {
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if (!gst_h264_dpb_bump (dpb, G_MAXUINT, &ret)) {
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GST_ERROR_OBJECT (dpb, "Couldn't make room in DPB");
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return GST_FLOW_OK;
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}
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}
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dpb->frames[dpb->n_frames++] = h264_frame;
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}
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else {
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while (gst_h264_dpb_bump (dpb, h264_frame->poc, &ret)) {
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if (ret != GST_FLOW_OK)
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return ret;
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}
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ret = dpb->output (dpb, h264_frame, dpb->user_data);
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}
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return ret;
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}
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void
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gst_h264_dpb_flush (GstH264DPB * dpb, gboolean output)
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{
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GstFlowReturn ret;
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GstVideoFrame **frames;
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guint i;
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GST_DEBUG ("flush");
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if (output)
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while (gst_h264_dpb_bump (dpb, G_MAXUINT, &ret));
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frames = (GstVideoFrame **) dpb->frames;
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for (i = 0; i < dpb->n_frames; i++)
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gst_video_frame_unref (frames[i]);
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dpb->n_frames = 0;
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}
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void
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gst_h264_dpb_mark_sliding (GstH264DPB * dpb)
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{
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GstH264Frame **frames;
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guint i;
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gint mark_idx = -1;
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if (dpb->n_frames != dpb->max_frames)
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return;
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frames = dpb->frames;
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for (i = 0; i < dpb->n_frames; i++) {
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if (frames[i]->is_reference && !frames[i]->is_long_term) {
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mark_idx = i;
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break;
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}
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}
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if (mark_idx != -1) {
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for (i = mark_idx; i < dpb->n_frames; i++) {
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if (frames[i]->is_reference && !frames[i]->is_long_term &&
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frames[i]->frame_idx < frames[mark_idx]->frame_idx)
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mark_idx = i;
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}
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frames[mark_idx]->is_reference = FALSE;
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if (!frames[mark_idx]->output_needed)
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gst_h264_dpb_remove (dpb, mark_idx);
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}
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}
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void
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gst_h264_dpb_mark_long_term (GstH264DPB * dpb, guint16 pic_num,
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guint16 long_term_frame_idx)
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{
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GstH264Frame **frames;
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guint i;
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gint mark_idx = -1;
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frames = dpb->frames;
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for (i = 0; i < dpb->n_frames; i++) {
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if (frames[i]->is_reference && !frames[i]->is_long_term &&
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frames[i]->frame_idx == pic_num) {
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mark_idx = i;
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break;
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}
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}
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if (mark_idx != -1) {
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frames[mark_idx]->is_long_term = TRUE;
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frames[mark_idx]->frame_idx = long_term_frame_idx;
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}
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}
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void
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gst_h264_dpb_mark_short_term_unused (GstH264DPB * dpb, guint16 pic_num)
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{
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GstH264Frame **frames;
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guint i;
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gint mark_idx = -1;
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frames = dpb->frames;
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for (i = 0; i < dpb->n_frames; i++) {
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if (frames[i]->is_reference && !frames[i]->is_long_term &&
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frames[i]->frame_idx == pic_num) {
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mark_idx = i;
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break;
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}
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}
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if (mark_idx != -1) {
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frames[mark_idx]->is_reference = FALSE;
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if (!frames[mark_idx]->output_needed)
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gst_h264_dpb_remove (dpb, mark_idx);
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}
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}
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void
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gst_h264_dpb_mark_long_term_unused (GstH264DPB * dpb, guint16 long_term_pic_num)
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{
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GstH264Frame **frames;
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guint i;
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gint mark_idx = -1;
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frames = dpb->frames;
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for (i = 0; i < dpb->n_frames; i++) {
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if (frames[i]->is_reference && frames[i]->is_long_term &&
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frames[i]->frame_idx == long_term_pic_num) {
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mark_idx = i;
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break;
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}
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}
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if (mark_idx != -1) {
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frames[mark_idx]->is_reference = FALSE;
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if (!frames[mark_idx]->output_needed)
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gst_h264_dpb_remove (dpb, mark_idx);
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}
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}
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void
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gst_h264_dpb_mark_all_unused (GstH264DPB * dpb)
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{
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GstH264Frame **frames;
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guint i;
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frames = dpb->frames;
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for (i = 0; i < dpb->n_frames; i++) {
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frames[i]->is_reference = FALSE;
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if (!frames[i]->output_needed) {
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gst_h264_dpb_remove (dpb, i);
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i--;
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}
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}
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}
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void
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gst_h264_dpb_set_output_func (GstH264DPB * dpb, GstH264DPBOutputFunc func,
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gpointer user_data)
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{
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g_return_if_fail (GST_IS_H264_DPB (dpb));
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dpb->output = func;
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dpb->user_data = user_data;
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}
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/* GObject vmethod implementations */
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static void
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gst_h264_dpb_get_property (GObject * object, guint property_id,
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GValue * value, GParamSpec * pspec)
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{
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GstH264DPB *dpb = GST_H264_DPB (object);
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switch (property_id) {
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case PROP_NUM_REF_FRAMES:
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g_value_set_uint (value, dpb->max_frames);
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break;
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case PROP_MAX_LONGTERM_IDX:
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g_value_set_int (value, dpb->max_longterm_frame_idx);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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static void
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gst_h264_dpb_set_property (GObject * object, guint property_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstH264DPB *dpb = GST_H264_DPB (object);
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switch (property_id) {
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case PROP_NUM_REF_FRAMES:
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{
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GstFlowReturn ret;
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guint i;
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dpb->max_frames = g_value_get_uint (value);
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for (i = dpb->n_frames; i > dpb->max_frames; i--)
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gst_h264_dpb_bump (dpb, G_MAXUINT, &ret);
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break;
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}
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case PROP_MAX_LONGTERM_IDX:
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{
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GstH264Frame **frames;
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guint i;
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dpb->max_longterm_frame_idx = g_value_get_int (value);
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frames = dpb->frames;
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for (i = dpb->n_frames; i < dpb->n_frames; i++) {
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if (frames[i]->is_reference && frames[i]->is_long_term &&
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frames[i]->frame_idx > dpb->max_longterm_frame_idx) {
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frames[i]->is_reference = FALSE;
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if (!frames[i]->output_needed) {
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gst_h264_dpb_remove (dpb, i);
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i--;
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}
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}
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}
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break;
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}
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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static void
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gst_h264_dpb_finalize (GObject * object)
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{
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GstH264DPB *dpb = GST_H264_DPB (object);
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GstVideoFrame **frames;
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guint i;
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frames = (GstVideoFrame **) dpb->frames;
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for (i = 0; i < dpb->n_frames; i++)
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gst_video_frame_unref (frames[i]);
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G_OBJECT_CLASS (gst_h264_dpb_parent_class)->finalize (object);
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}
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static void
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gst_h264_dpb_init (GstH264DPB * dpb)
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{
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dpb->n_frames = 0;
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dpb->max_longterm_frame_idx = -1;
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dpb->max_frames = MAX_DPB_SIZE;
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}
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static void
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gst_h264_dpb_class_init (GstH264DPBClass * klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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object_class->finalize = gst_h264_dpb_finalize;
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object_class->set_property = gst_h264_dpb_set_property;
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object_class->get_property = gst_h264_dpb_get_property;
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g_object_class_install_property (object_class, PROP_NUM_REF_FRAMES,
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g_param_spec_uint ("num-ref-frames", "Num Ref Frames",
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"How many reference frames the DPB should hold ",
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0, 16, 16, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (object_class, PROP_MAX_LONGTERM_IDX,
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g_param_spec_int ("max-longterm-frame-idx", "MaxLongTermFrameIDX",
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"Maximum long-term frame index",
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-1, G_MAXINT, -1, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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}
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