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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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* Only create it if we are attempting to put values in it * If we sucessfully registered the values, only free the GArray * IF we didn't, also free the backing memory Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3390>
641 lines
20 KiB
C
641 lines
20 KiB
C
/* GStreamer
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*
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* FFMpeg Configuration
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*
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* Copyright (C) <2006> Mark Nauwelaerts <manauw@skynet.be>
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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., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "gstav.h"
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#include "gstavvidenc.h"
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#include "gstavcfg.h"
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#include <string.h>
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#include <libavutil/opt.h>
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static GQuark avoption_quark;
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static GHashTable *generic_overrides = NULL;
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static void
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make_generic_overrides (void)
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{
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g_assert (!generic_overrides);
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generic_overrides = g_hash_table_new_full (g_str_hash, g_str_equal,
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g_free, (GDestroyNotify) gst_structure_free);
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g_hash_table_insert (generic_overrides, g_strdup ("b"),
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gst_structure_new_empty ("bitrate"));
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g_hash_table_insert (generic_overrides, g_strdup ("ab"),
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gst_structure_new_empty ("bitrate"));
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g_hash_table_insert (generic_overrides, g_strdup ("g"),
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gst_structure_new_empty ("gop-size"));
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g_hash_table_insert (generic_overrides, g_strdup ("bt"),
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gst_structure_new_empty ("bitrate-tolerance"));
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g_hash_table_insert (generic_overrides, g_strdup ("bf"),
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gst_structure_new_empty ("max-bframes"));
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/* Those are exposed through caps */
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g_hash_table_insert (generic_overrides, g_strdup ("profile"),
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gst_structure_new ("profile", "skip", G_TYPE_BOOLEAN, TRUE, NULL));
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g_hash_table_insert (generic_overrides, g_strdup ("level"),
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gst_structure_new ("level", "skip", G_TYPE_BOOLEAN, TRUE, NULL));
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g_hash_table_insert (generic_overrides, g_strdup ("color_primaries"),
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gst_structure_new ("color_primaries", "skip", G_TYPE_BOOLEAN, TRUE,
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NULL));
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g_hash_table_insert (generic_overrides, g_strdup ("color_trc"),
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gst_structure_new ("color_trc", "skip", G_TYPE_BOOLEAN, TRUE, NULL));
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g_hash_table_insert (generic_overrides, g_strdup ("colorspace"),
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gst_structure_new ("colorspace", "skip", G_TYPE_BOOLEAN, TRUE, NULL));
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g_hash_table_insert (generic_overrides, g_strdup ("color_range"),
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gst_structure_new ("color_range", "skip", G_TYPE_BOOLEAN, TRUE, NULL));
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}
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void
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gst_ffmpeg_cfg_init (void)
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{
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avoption_quark = g_quark_from_static_string ("ffmpeg-cfg-param-spec-data");
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make_generic_overrides ();
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}
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static gint
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cmp_enum_value (GEnumValue * val1, GEnumValue * val2)
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{
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if (val1->value == val2->value)
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return 0;
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return (val1->value > val2->value) ? 1 : -1;
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}
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static GType
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register_enum (const AVClass ** obj, const AVOption * top_opt)
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{
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const AVOption *opt = NULL;
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GType res = 0;
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GArray *values;
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gchar *lower_obj_name = g_ascii_strdown ((*obj)->class_name, -1);
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gchar *enum_name = g_strdup_printf ("%s-%s", lower_obj_name, top_opt->unit);
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gboolean none_default = TRUE;
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const gchar *enum_name_strip;
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g_strcanon (enum_name, G_CSET_a_2_z G_CSET_DIGITS, '-');
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/* strip leading '-'s */
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enum_name_strip = enum_name;
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while (enum_name_strip[0] == '-')
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enum_name_strip++;
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if (enum_name_strip[0] == '\0')
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goto done;
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if ((res = g_type_from_name (enum_name_strip)))
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goto done;
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values = g_array_new (TRUE, TRUE, sizeof (GEnumValue));
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while ((opt = av_opt_next (obj, opt))) {
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if (opt->type == AV_OPT_TYPE_CONST && !g_strcmp0 (top_opt->unit, opt->unit)) {
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GEnumValue val;
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val.value = opt->default_val.i64;
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val.value_name = g_strdup (opt->help ? opt->help : opt->name);
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val.value_nick = g_strdup (opt->name);
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if (opt->default_val.i64 == top_opt->default_val.i64)
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none_default = FALSE;
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g_array_append_val (values, val);
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}
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}
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if (values->len) {
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guint i = 0;
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gint cur_val;
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gboolean cur_val_set = FALSE;
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/* Sometimes ffmpeg sets a default value but no named constants with
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* this value, we assume this means "unspecified" and add our own
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*/
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if (none_default) {
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GEnumValue val;
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val.value = top_opt->default_val.i64;
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val.value_name = g_strdup ("Unspecified");
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val.value_nick = g_strdup ("unknown");
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g_array_append_val (values, val);
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}
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g_array_sort (values, (GCompareFunc) cmp_enum_value);
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/* Dedup, easy once sorted
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* We do this because ffmpeg can expose multiple names for the
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* same constant, the way we expose enums makes this too confusing.
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*/
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while (i < values->len) {
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if (cur_val_set) {
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if (g_array_index (values, GEnumValue, i).value == cur_val) {
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GEnumValue val = g_array_index (values, GEnumValue, i);
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/* Don't leak the strings */
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g_free ((gchar *) val.value_name);
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g_free ((gchar *) val.value_nick);
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g_array_remove_index (values, i);
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} else {
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cur_val = g_array_index (values, GEnumValue, i).value;
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i++;
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}
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} else {
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cur_val = g_array_index (values, GEnumValue, i).value;
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cur_val_set = TRUE;
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i++;
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}
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}
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res = g_enum_register_static (enum_name_strip,
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&g_array_index (values, GEnumValue, 0));
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gst_type_mark_as_plugin_api (res, 0);
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g_array_free (values, FALSE);
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} else {
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g_array_free (values, TRUE);
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}
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done:
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g_free (lower_obj_name);
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g_free (enum_name);
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return res;
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}
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static gint
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cmp_flags_value (GFlagsValue * val1, GFlagsValue * val2)
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{
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if (val1->value == val2->value)
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return 0;
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return (val1->value > val2->value) ? 1 : -1;
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}
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static GType
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register_flags (const AVClass ** obj, const AVOption * top_opt)
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{
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const AVOption *opt = NULL;
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GType res = 0;
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GArray *values;
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gchar *lower_obj_name = g_ascii_strdown ((*obj)->class_name, -1);
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gchar *flags_name = g_strdup_printf ("%s-%s", lower_obj_name, top_opt->unit);
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const gchar *flags_name_strip;
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g_strcanon (flags_name, G_CSET_a_2_z G_CSET_DIGITS, '-');
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/* strip leading '-'s */
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flags_name_strip = flags_name;
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while (flags_name_strip[0] == '-')
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flags_name_strip++;
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if (flags_name_strip[0] == '\0')
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goto done;
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if ((res = g_type_from_name (flags_name_strip)))
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goto done;
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values = g_array_new (TRUE, TRUE, sizeof (GFlagsValue));
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while ((opt = av_opt_next (obj, opt))) {
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if (opt->type == AV_OPT_TYPE_CONST && !g_strcmp0 (top_opt->unit, opt->unit)) {
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GFlagsValue val;
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/* We expose pass manually, hardcoding this isn't very nice, but
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* I don't expect we want to do that sort of things often enough
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* to warrant a general mechanism
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*/
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if (!g_strcmp0 (top_opt->name, "flags")) {
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if (opt->default_val.i64 == AV_CODEC_FLAG_QSCALE ||
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opt->default_val.i64 == AV_CODEC_FLAG_PASS1 ||
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opt->default_val.i64 == AV_CODEC_FLAG_PASS2) {
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continue;
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}
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}
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val.value = opt->default_val.i64;
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val.value_name = g_strdup (opt->help ? opt->help : opt->name);
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val.value_nick = g_strdup (opt->name);
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g_array_append_val (values, val);
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}
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}
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if (values->len) {
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g_array_sort (values, (GCompareFunc) cmp_flags_value);
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res =
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g_flags_register_static (flags_name_strip, &g_array_index (values,
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GFlagsValue, 0));
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gst_type_mark_as_plugin_api (res, 0);
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g_array_free (values, FALSE);
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} else
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g_array_free (values, TRUE);
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done:
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g_free (lower_obj_name);
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g_free (flags_name);
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return res;
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}
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static guint
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install_opts (GObjectClass * gobject_class, const AVClass ** obj, guint prop_id,
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gint flags, const gchar * extra_help, GHashTable * overrides)
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{
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const AVOption *opt = NULL;
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while ((opt = av_opt_next (obj, opt))) {
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GParamSpec *pspec = NULL;
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AVOptionRanges *r;
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gdouble min = G_MINDOUBLE;
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gdouble max = G_MAXDOUBLE;
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gchar *help;
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const gchar *name;
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if (overrides && g_hash_table_contains (overrides, opt->name)) {
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gboolean skip;
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const GstStructure *s =
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(GstStructure *) g_hash_table_lookup (overrides, opt->name);
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name = gst_structure_get_name (s);
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if (gst_structure_get_boolean (s, "skip", &skip) && skip) {
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continue;
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}
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} else {
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name = opt->name;
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}
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if ((opt->flags & flags) != flags)
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continue;
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if (g_object_class_find_property (gobject_class, name))
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continue;
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if (av_opt_query_ranges (&r, obj, opt->name, AV_OPT_SEARCH_FAKE_OBJ) >= 0) {
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if (r->nb_ranges == 1) {
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min = r->range[0]->value_min;
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max = r->range[0]->value_max;
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}
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av_opt_freep_ranges (&r);
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}
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help = g_strdup_printf ("%s%s", opt->help, extra_help);
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switch (opt->type) {
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case AV_OPT_TYPE_INT:
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if (opt->unit) {
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GType enum_gtype;
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enum_gtype = register_enum (obj, opt);
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if (enum_gtype) {
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pspec = g_param_spec_enum (name, name, help,
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enum_gtype, opt->default_val.i64, G_PARAM_READWRITE);
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g_object_class_install_property (gobject_class, prop_id++, pspec);
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} else { /* Some options have a unit but no named constants associated */
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pspec = g_param_spec_int (name, name, help,
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(gint) min, (gint) max, opt->default_val.i64,
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G_PARAM_READWRITE);
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g_object_class_install_property (gobject_class, prop_id++, pspec);
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}
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} else {
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pspec = g_param_spec_int (name, name, help,
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(gint) min, (gint) max, opt->default_val.i64, G_PARAM_READWRITE);
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g_object_class_install_property (gobject_class, prop_id++, pspec);
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}
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break;
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case AV_OPT_TYPE_FLAGS:
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if (opt->unit) {
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GType flags_gtype;
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flags_gtype = register_flags (obj, opt);
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if (flags_gtype) {
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pspec = g_param_spec_flags (name, name, help,
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flags_gtype, opt->default_val.i64, G_PARAM_READWRITE);
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g_object_class_install_property (gobject_class, prop_id++, pspec);
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}
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}
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break;
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case AV_OPT_TYPE_DURATION: /* Fall through */
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case AV_OPT_TYPE_INT64:
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/* FIXME 2.0: Workaround for worst property related API change. We
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* continue using a 32 bit integer for the bitrate property as
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* otherwise too much existing code will fail at runtime.
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*
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* See https://gitlab.freedesktop.org/gstreamer/gst-libav/issues/41#note_142808 */
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if (g_strcmp0 (name, "bitrate") == 0) {
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pspec = g_param_spec_int (name, name, help,
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(gint) MAX (min, G_MININT), (gint) MIN (max, G_MAXINT),
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(gint) opt->default_val.i64, G_PARAM_READWRITE);
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} else {
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/* ffmpeg expresses all ranges with doubles, this is sad */
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pspec = g_param_spec_int64 (name, name, help,
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(min == (gdouble) INT64_MIN ? INT64_MIN : (gint64) min),
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(max == (gdouble) INT64_MAX ? INT64_MAX : (gint64) max),
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opt->default_val.i64, G_PARAM_READWRITE);
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}
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g_object_class_install_property (gobject_class, prop_id++, pspec);
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break;
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case AV_OPT_TYPE_DOUBLE:
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pspec = g_param_spec_double (name, name, help,
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min, max, opt->default_val.dbl, G_PARAM_READWRITE);
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g_object_class_install_property (gobject_class, prop_id++, pspec);
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break;
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case AV_OPT_TYPE_FLOAT:
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pspec = g_param_spec_float (name, name, help,
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(gfloat) min, (gfloat) max, (gfloat) opt->default_val.dbl,
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G_PARAM_READWRITE);
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g_object_class_install_property (gobject_class, prop_id++, pspec);
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break;
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case AV_OPT_TYPE_STRING:
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pspec = g_param_spec_string (name, name, help,
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opt->default_val.str, G_PARAM_READWRITE);
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g_object_class_install_property (gobject_class, prop_id++, pspec);
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break;
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case AV_OPT_TYPE_UINT64:
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/* ffmpeg expresses all ranges with doubles, this is appalling */
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pspec = g_param_spec_uint64 (name, name, help,
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(guint64) (min <= (gdouble) 0 ? 0 : (guint64) min),
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(guint64) (max >=
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/* Biggest value before UINT64_MAX that can be represented as double */
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(gdouble) 18446744073709550000.0 ?
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/* The Double conversion rounds UINT64_MAX to a bigger */
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/* value, so the following smaller limit must be used. */
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G_GUINT64_CONSTANT (18446744073709550000) : (guint64) max),
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opt->default_val.i64, G_PARAM_READWRITE);
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g_object_class_install_property (gobject_class, prop_id++, pspec);
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break;
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case AV_OPT_TYPE_BOOL:
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pspec = g_param_spec_boolean (name, name, help,
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opt->default_val.i64 ? TRUE : FALSE, G_PARAM_READWRITE);
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g_object_class_install_property (gobject_class, prop_id++, pspec);
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break;
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/* TODO: didn't find options for the video encoders with
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* the following type, add support if needed */
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case AV_OPT_TYPE_CHANNEL_LAYOUT:
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case AV_OPT_TYPE_COLOR:
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case AV_OPT_TYPE_VIDEO_RATE:
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case AV_OPT_TYPE_SAMPLE_FMT:
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case AV_OPT_TYPE_PIXEL_FMT:
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case AV_OPT_TYPE_IMAGE_SIZE:
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case AV_OPT_TYPE_DICT:
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case AV_OPT_TYPE_BINARY:
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case AV_OPT_TYPE_RATIONAL:
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default:
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break;
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}
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g_free (help);
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if (pspec) {
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g_param_spec_set_qdata (pspec, avoption_quark, (gpointer) opt);
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}
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}
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return prop_id;
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}
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void
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gst_ffmpeg_cfg_install_properties (GObjectClass * klass, AVCodec * in_plugin,
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guint base, gint flags)
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{
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gint prop_id;
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AVCodecContext *ctx;
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prop_id = base;
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g_return_if_fail (base > 0);
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ctx = avcodec_alloc_context3 (in_plugin);
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if (!ctx)
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g_warning ("could not get context");
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prop_id =
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install_opts ((GObjectClass *) klass, &in_plugin->priv_class, prop_id, 0,
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" (Private codec option)", NULL);
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prop_id =
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install_opts ((GObjectClass *) klass, &ctx->av_class, prop_id, flags,
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" (Generic codec option, might have no effect)", generic_overrides);
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if (ctx) {
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gst_ffmpeg_avcodec_close (ctx);
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av_free (ctx);
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}
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}
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static gint
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set_option_value (AVCodecContext * ctx, GParamSpec * pspec,
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const GValue * value, const AVOption * opt)
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{
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int res = -1;
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switch (G_PARAM_SPEC_VALUE_TYPE (pspec)) {
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case G_TYPE_INT:
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res = av_opt_set_int (ctx, opt->name,
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g_value_get_int (value), AV_OPT_SEARCH_CHILDREN);
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break;
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case G_TYPE_INT64:
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res = av_opt_set_int (ctx, opt->name,
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g_value_get_int64 (value), AV_OPT_SEARCH_CHILDREN);
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break;
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case G_TYPE_UINT64:
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res = av_opt_set_int (ctx, opt->name,
|
|
g_value_get_uint64 (value), AV_OPT_SEARCH_CHILDREN);
|
|
break;
|
|
case G_TYPE_DOUBLE:
|
|
res = av_opt_set_double (ctx, opt->name,
|
|
g_value_get_double (value), AV_OPT_SEARCH_CHILDREN);
|
|
break;
|
|
case G_TYPE_FLOAT:
|
|
res = av_opt_set_double (ctx, opt->name,
|
|
g_value_get_float (value), AV_OPT_SEARCH_CHILDREN);
|
|
break;
|
|
case G_TYPE_STRING:
|
|
res = av_opt_set (ctx, opt->name,
|
|
g_value_get_string (value), AV_OPT_SEARCH_CHILDREN);
|
|
/* Some code in FFmpeg returns ENOMEM if the string is NULL:
|
|
* *dst = av_strdup(val);
|
|
* return *dst ? 0 : AVERROR(ENOMEM);
|
|
* That makes little sense, let's ignore that
|
|
*/
|
|
if (!g_value_get_string (value))
|
|
res = 0;
|
|
break;
|
|
case G_TYPE_BOOLEAN:
|
|
res = av_opt_set_int (ctx, opt->name,
|
|
g_value_get_boolean (value), AV_OPT_SEARCH_CHILDREN);
|
|
break;
|
|
default:
|
|
if (G_IS_PARAM_SPEC_ENUM (pspec)) {
|
|
res = av_opt_set_int (ctx, opt->name,
|
|
g_value_get_enum (value), AV_OPT_SEARCH_CHILDREN);
|
|
} else if (G_IS_PARAM_SPEC_FLAGS (pspec)) {
|
|
res = av_opt_set_int (ctx, opt->name,
|
|
g_value_get_flags (value), AV_OPT_SEARCH_CHILDREN);
|
|
} else { /* oops, bit lazy we don't cover this case yet */
|
|
g_critical ("%s does not yet support type %s", GST_FUNCTION,
|
|
g_type_name (G_PARAM_SPEC_VALUE_TYPE (pspec)));
|
|
}
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
gboolean
|
|
gst_ffmpeg_cfg_set_property (AVCodecContext * refcontext, const GValue * value,
|
|
GParamSpec * pspec)
|
|
{
|
|
const AVOption *opt;
|
|
|
|
opt = g_param_spec_get_qdata (pspec, avoption_quark);
|
|
|
|
if (!opt)
|
|
return FALSE;
|
|
|
|
return set_option_value (refcontext, pspec, value, opt) >= 0;
|
|
}
|
|
|
|
gboolean
|
|
gst_ffmpeg_cfg_get_property (AVCodecContext * refcontext, GValue * value,
|
|
GParamSpec * pspec)
|
|
{
|
|
const AVOption *opt;
|
|
int res = -1;
|
|
|
|
opt = g_param_spec_get_qdata (pspec, avoption_quark);
|
|
|
|
if (!opt)
|
|
return FALSE;
|
|
|
|
switch (G_PARAM_SPEC_VALUE_TYPE (pspec)) {
|
|
case G_TYPE_INT:
|
|
{
|
|
int64_t val;
|
|
if ((res = av_opt_get_int (refcontext, opt->name,
|
|
AV_OPT_SEARCH_CHILDREN, &val) >= 0))
|
|
g_value_set_int (value, val);
|
|
break;
|
|
}
|
|
case G_TYPE_INT64:
|
|
{
|
|
int64_t val;
|
|
if ((res = av_opt_get_int (refcontext, opt->name,
|
|
AV_OPT_SEARCH_CHILDREN, &val) >= 0))
|
|
g_value_set_int64 (value, val);
|
|
break;
|
|
}
|
|
case G_TYPE_UINT64:
|
|
{
|
|
int64_t val;
|
|
if ((res = av_opt_get_int (refcontext, opt->name,
|
|
AV_OPT_SEARCH_CHILDREN, &val) >= 0))
|
|
g_value_set_uint64 (value, val);
|
|
break;
|
|
}
|
|
case G_TYPE_DOUBLE:
|
|
{
|
|
gdouble val;
|
|
if ((res = av_opt_get_double (refcontext, opt->name,
|
|
AV_OPT_SEARCH_CHILDREN, &val) >= 0))
|
|
g_value_set_double (value, val);
|
|
break;
|
|
}
|
|
case G_TYPE_FLOAT:
|
|
{
|
|
gdouble val;
|
|
if ((res = av_opt_get_double (refcontext, opt->name,
|
|
AV_OPT_SEARCH_CHILDREN, &val) >= 0))
|
|
g_value_set_float (value, (gfloat) val);
|
|
break;
|
|
}
|
|
case G_TYPE_STRING:
|
|
{
|
|
uint8_t *val;
|
|
if ((res = av_opt_get (refcontext, opt->name,
|
|
AV_OPT_SEARCH_CHILDREN | AV_OPT_ALLOW_NULL, &val) >= 0)) {
|
|
g_value_set_string (value, (gchar *) val);
|
|
}
|
|
break;
|
|
}
|
|
case G_TYPE_BOOLEAN:
|
|
{
|
|
int64_t val;
|
|
if ((res = av_opt_get_int (refcontext, opt->name,
|
|
AV_OPT_SEARCH_CHILDREN, &val) >= 0))
|
|
g_value_set_boolean (value, val ? TRUE : FALSE);
|
|
break;
|
|
}
|
|
default:
|
|
if (G_IS_PARAM_SPEC_ENUM (pspec)) {
|
|
int64_t val;
|
|
|
|
if ((res = av_opt_get_int (refcontext, opt->name,
|
|
AV_OPT_SEARCH_CHILDREN, &val) >= 0))
|
|
g_value_set_enum (value, val);
|
|
} else if (G_IS_PARAM_SPEC_FLAGS (pspec)) {
|
|
int64_t val;
|
|
|
|
if ((res = av_opt_get_int (refcontext, opt->name,
|
|
AV_OPT_SEARCH_CHILDREN, &val) >= 0))
|
|
g_value_set_flags (value, val);
|
|
} else { /* oops, bit lazy we don't cover this case yet */
|
|
g_critical ("%s does not yet support type %s", GST_FUNCTION,
|
|
g_type_name (G_PARAM_SPEC_VALUE_TYPE (pspec)));
|
|
}
|
|
}
|
|
|
|
return res >= 0;
|
|
}
|
|
|
|
void
|
|
gst_ffmpeg_cfg_fill_context (GObject * object, AVCodecContext * context)
|
|
{
|
|
GParamSpec **pspecs;
|
|
guint num_props, i;
|
|
|
|
pspecs = g_object_class_list_properties (G_OBJECT_GET_CLASS (object),
|
|
&num_props);
|
|
|
|
for (i = 0; i < num_props; ++i) {
|
|
GParamSpec *pspec = pspecs[i];
|
|
const AVOption *opt;
|
|
GValue value = G_VALUE_INIT;
|
|
|
|
opt = g_param_spec_get_qdata (pspec, avoption_quark);
|
|
|
|
if (!opt)
|
|
continue;
|
|
|
|
g_value_init (&value, G_PARAM_SPEC_VALUE_TYPE (pspec));
|
|
g_object_get_property (object, pspec->name, &value);
|
|
set_option_value (context, pspec, &value, opt);
|
|
g_value_unset (&value);
|
|
}
|
|
g_free (pspecs);
|
|
}
|
|
|
|
void
|
|
gst_ffmpeg_cfg_finalize (void)
|
|
{
|
|
GST_ERROR ("Finalizing");
|
|
g_assert (generic_overrides);
|
|
g_hash_table_unref (generic_overrides);
|
|
}
|