gstreamer/gst-libs/gst/codecs/gsth264picture.c

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/* GStreamer
* Copyright (C) 2019 Seungha Yang <seungha.yang@navercorp.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "gsth264picture.h"
GST_DEBUG_CATEGORY_EXTERN (gst_h264_decoder_debug);
#define GST_CAT_DEFAULT gst_h264_decoder_debug
GST_DEFINE_MINI_OBJECT_TYPE (GstH264Picture, gst_h264_picture);
static void
_gst_h264_picture_free (GstH264Picture * picture)
{
if (picture->notify)
picture->notify (picture->user_data);
g_free (picture);
}
/**
* gst_h264_picture_new:
*
* Create new #GstH264Picture
*
* Returns: a new #GstH264Picture
*/
GstH264Picture *
gst_h264_picture_new (void)
{
GstH264Picture *pic;
pic = g_new0 (GstH264Picture, 1);
pic->pts = GST_CLOCK_TIME_NONE;
pic->top_field_order_cnt = G_MAXINT32;
pic->bottom_field_order_cnt = G_MAXINT32;
pic->field = GST_H264_PICTURE_FIELD_FRAME;
gst_mini_object_init (GST_MINI_OBJECT_CAST (pic), 0,
GST_TYPE_H264_PICTURE, NULL, NULL,
(GstMiniObjectFreeFunction) _gst_h264_picture_free);
return pic;
}
/**
* gst_h264_picture_set_user_data:
* @picture: a #GstH264Picture
* @user_data: private data
* @notify: (closure user_data): a #GDestroyNotify
*
* Sets @user_data on the picture and the #GDestroyNotify that will be called when
* the picture is freed.
*
* If a @user_data was previously set, then the previous set @notify will be called
* before the @user_data is replaced.
*/
void
gst_h264_picture_set_user_data (GstH264Picture * picture, gpointer user_data,
GDestroyNotify notify)
{
g_return_if_fail (GST_IS_H264_PICTURE (picture));
if (picture->notify)
picture->notify (picture->user_data);
picture->user_data = user_data;
picture->notify = notify;
}
/**
* gst_h264_picture_get_user_data:
* @picture: a #GstH264Picture
*
* Gets private data set on the picture via
* gst_h264_picture_set_user_data() previously.
*
* Returns: (transfer none): The previously set user_data
*/
gpointer
gst_h264_picture_get_user_data (GstH264Picture * picture)
{
return picture->user_data;
}
struct _GstH264Dpb
{
GArray *pic_list;
gint max_num_pics;
};
/**
* gst_h264_dpb_new: (skip)
*
* Create new #GstH264Dpb
*
* Returns: a new #GstH264Dpb
*/
GstH264Dpb *
gst_h264_dpb_new (void)
{
GstH264Dpb *dpb;
dpb = g_new0 (GstH264Dpb, 1);
dpb->pic_list =
g_array_sized_new (FALSE, TRUE, sizeof (GstH264Picture *),
GST_H264_DPB_MAX_SIZE);
g_array_set_clear_func (dpb->pic_list,
(GDestroyNotify) gst_h264_picture_clear);
return dpb;
}
/**
* gst_h264_dpb_set_max_num_pics:
* @dpb: a #GstH264Dpb
* @max_num_pics: the maximum number of picture
*
* Set the number of maximum allowed pictures to store
*/
void
gst_h264_dpb_set_max_num_pics (GstH264Dpb * dpb, gint max_num_pics)
{
g_return_if_fail (dpb != NULL);
dpb->max_num_pics = max_num_pics;
}
/**
* gst_h264_dpb_get_max_num_pics:
* @dpb: a #GstH264Dpb
*
* Returns: the number of maximum pictures
*/
gint
gst_h264_dpb_get_max_num_pics (GstH264Dpb * dpb)
{
g_return_val_if_fail (dpb != NULL, 0);
return dpb->max_num_pics;
}
/**
* gst_h264_dpb_free:
* @dpb: a #GstH264Dpb to free
*
* Free the @dpb
*/
void
gst_h264_dpb_free (GstH264Dpb * dpb)
{
g_return_if_fail (dpb != NULL);
gst_h264_dpb_clear (dpb);
g_array_unref (dpb->pic_list);
g_free (dpb);
}
/**
* gst_h264_dpb_clear:
* @dpb: a #GstH264Dpb
*
* Clear all stored #GstH264Picture
*/
void
gst_h264_dpb_clear (GstH264Dpb * dpb)
{
g_return_if_fail (dpb != NULL);
g_array_set_size (dpb->pic_list, 0);
}
/**
* gst_h264_dpb_add:
* @dpb: a #GstH264Dpb
* @picture: (transfer full): a #GstH264Picture
*
* Store the @picture
*/
void
gst_h264_dpb_add (GstH264Dpb * dpb, GstH264Picture * picture)
{
g_return_if_fail (dpb != NULL);
g_return_if_fail (GST_IS_H264_PICTURE (picture));
g_array_append_val (dpb->pic_list, picture);
}
/**
* gst_h264_dpb_delete_unused:
* @dpb: a #GstH264Dpb
*
* Delete already outputted and not referenced all pictures from dpb
*/
void
gst_h264_dpb_delete_unused (GstH264Dpb * dpb)
{
gint i;
g_return_if_fail (dpb != NULL);
for (i = 0; i < dpb->pic_list->len; i++) {
GstH264Picture *picture =
g_array_index (dpb->pic_list, GstH264Picture *, i);
if (picture->outputted && !picture->ref) {
GST_TRACE ("remove picture %p (frame num %d) from dpb",
picture, picture->frame_num);
g_array_remove_index (dpb->pic_list, i);
i--;
}
}
}
/**
* gst_h264_dpb_delete_by_poc:
* @dpb: a #GstH264Dpb
* @poc: a poc of #GstH264Picture to remove
*
* Delete a #GstH264Dpb by @poc
*/
void
gst_h264_dpb_delete_by_poc (GstH264Dpb * dpb, gint poc)
{
gint i;
g_return_if_fail (dpb != NULL);
for (i = 0; i < dpb->pic_list->len; i++) {
GstH264Picture *picture =
g_array_index (dpb->pic_list, GstH264Picture *, i);
if (picture->pic_order_cnt == poc) {
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GST_TRACE ("remove picture %p for poc %d (frame num %d) from dpb",
picture, poc, picture->frame_num);
g_array_remove_index (dpb->pic_list, i);
return;
}
}
GST_WARNING ("Couldn't find picture with poc %d", poc);
}
/**
* gst_h264_dpb_num_ref_pictures:
* @dpb: a #GstH264Dpb
*
* Returns: The number of referenced pictures
*/
gint
gst_h264_dpb_num_ref_pictures (GstH264Dpb * dpb)
{
gint i;
gint ret = 0;
g_return_val_if_fail (dpb != NULL, -1);
for (i = 0; i < dpb->pic_list->len; i++) {
GstH264Picture *picture =
g_array_index (dpb->pic_list, GstH264Picture *, i);
if (picture->ref)
ret++;
}
return ret;
}
/**
* gst_h264_dpb_mark_all_non_ref:
* @dpb: a #GstH264Dpb
*
* Mark all pictures are not referenced
*/
void
gst_h264_dpb_mark_all_non_ref (GstH264Dpb * dpb)
{
gint i;
g_return_if_fail (dpb != NULL);
for (i = 0; i < dpb->pic_list->len; i++) {
GstH264Picture *picture =
g_array_index (dpb->pic_list, GstH264Picture *, i);
picture->ref = FALSE;
}
}
/**
* gst_h264_dpb_get_short_ref_by_pic_num:
* @dpb: a #GstH264Dpb
* @pic_num: a picture number
*
* Find a short term reference picture which has matching picture number
*
* Returns: (nullable) (transfer none): a #GstH264Picture
*/
GstH264Picture *
gst_h264_dpb_get_short_ref_by_pic_num (GstH264Dpb * dpb, gint pic_num)
{
gint i;
g_return_val_if_fail (dpb != NULL, NULL);
for (i = 0; i < dpb->pic_list->len; i++) {
GstH264Picture *picture =
g_array_index (dpb->pic_list, GstH264Picture *, i);
if (picture->ref && !picture->long_term && picture->pic_num == pic_num)
return picture;
}
GST_WARNING ("No short term reference picture for %d", pic_num);
return NULL;
}
/**
* gst_h264_dpb_get_long_ref_by_pic_num:
* @dpb: a #GstH264Dpb
* @pic_num: a picture number
*
* Find a long term reference picture which has matching picture number
*
* Returns: (nullable) (transfer none): a #GstH264Picture
*/
GstH264Picture *
gst_h264_dpb_get_long_ref_by_pic_num (GstH264Dpb * dpb, gint pic_num)
{
gint i;
g_return_val_if_fail (dpb != NULL, NULL);
for (i = 0; i < dpb->pic_list->len; i++) {
GstH264Picture *picture =
g_array_index (dpb->pic_list, GstH264Picture *, i);
if (picture->ref && picture->long_term && picture->pic_num == pic_num)
return picture;
}
GST_WARNING ("No long term reference picture for %d", pic_num);
return NULL;
}
/**
* gst_h264_dpb_get_lowest_frame_num_short_ref:
* @dpb: a #GstH264Dpb
*
* Find a short term reference picture which has the lowest frame_num_wrap
*
* Returns: (transfer full): a #GstH264Picture
*/
GstH264Picture *
gst_h264_dpb_get_lowest_frame_num_short_ref (GstH264Dpb * dpb)
{
gint i;
GstH264Picture *ret = NULL;
g_return_val_if_fail (dpb != NULL, NULL);
for (i = 0; i < dpb->pic_list->len; i++) {
GstH264Picture *picture =
g_array_index (dpb->pic_list, GstH264Picture *, i);
if (picture->ref && !picture->long_term &&
(!ret || picture->frame_num_wrap < ret->frame_num_wrap))
ret = picture;
}
if (ret)
gst_h264_picture_ref (ret);
return ret;
}
/**
* gst_h264_dpb_get_pictures_not_outputted:
* @dpb: a #GstH264Dpb
* @out: (out) (element-type GstH264Picture) (transfer full): an array
* of #GstH264Picture pointer
*
* Retrieve all not-outputted pictures from @dpb
*/
void
gst_h264_dpb_get_pictures_not_outputted (GstH264Dpb * dpb, GArray * out)
{
gint i;
g_return_if_fail (dpb != NULL);
g_return_if_fail (out != NULL);
for (i = 0; i < dpb->pic_list->len; i++) {
GstH264Picture *picture =
g_array_index (dpb->pic_list, GstH264Picture *, i);
if (!picture->outputted) {
gst_h264_picture_ref (picture);
g_array_append_val (out, picture);
}
}
}
/**
* gst_h264_dpb_get_pictures_short_term_ref:
* @dpb: a #GstH264Dpb
* @out: (out) (element-type GstH264Picture) (transfer full): an array
* of #GstH264Picture pointers
*
* Retrieve all short-term reference pictures from @dpb. The picture will be
* appended to the array.
*/
void
gst_h264_dpb_get_pictures_short_term_ref (GstH264Dpb * dpb, GArray * out)
{
gint i;
g_return_if_fail (dpb != NULL);
g_return_if_fail (out != NULL);
for (i = 0; i < dpb->pic_list->len; i++) {
GstH264Picture *picture =
g_array_index (dpb->pic_list, GstH264Picture *, i);
if (picture->ref && !picture->long_term) {
gst_h264_picture_ref (picture);
g_array_append_val (out, picture);
}
}
}
/**
* gst_h264_dpb_get_pictures_long_term_ref:
* @dpb: a #GstH264Dpb
* @out: (out) (element-type GstH264Picture) (transfer full): an arrat
* of #GstH264Picture pointer
*
* Retrieve all long-term reference pictures from @dpb. The picture will be
* appended to the array.
*/
void
gst_h264_dpb_get_pictures_long_term_ref (GstH264Dpb * dpb, GArray * out)
{
gint i;
g_return_if_fail (dpb != NULL);
g_return_if_fail (out != NULL);
for (i = 0; i < dpb->pic_list->len; i++) {
GstH264Picture *picture =
g_array_index (dpb->pic_list, GstH264Picture *, i);
if (picture->ref && picture->long_term) {
gst_h264_picture_ref (picture);
g_array_append_val (out, picture);
}
}
}
/**
* gst_h264_dpb_get_pictures_all:
* @dpb: a #GstH264Dpb
*
* Return: (element-type GstH264Picture) (transfer full): a #GArray of
* #GstH264Picture stored in @dpb
*/
GArray *
gst_h264_dpb_get_pictures_all (GstH264Dpb * dpb)
{
g_return_val_if_fail (dpb != NULL, NULL);
return g_array_ref (dpb->pic_list);
}
/**
* gst_h264_dpb_get_size:
* @dpb: a #GstH264Dpb
*
* Return: the length of stored dpb array
*/
gint
gst_h264_dpb_get_size (GstH264Dpb * dpb)
{
g_return_val_if_fail (dpb != NULL, -1);
return dpb->pic_list->len;
}
/**
* gst_h264_dpb_is_full:
* @dpb: a #GstH264Dpb
*
* Return: %TRUE if @dpb is full
*/
gboolean
gst_h264_dpb_is_full (GstH264Dpb * dpb)
{
g_return_val_if_fail (dpb != NULL, -1);
return dpb->pic_list->len >= dpb->max_num_pics;
}