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348 lines
10 KiB
348 lines
10 KiB
/*****************************************************************************
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* avcommon.h: common code for libav*
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*****************************************************************************
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* Copyright (C) 2012 VLC authors and VideoLAN
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*
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* Authors: Rafaël Carré <funman@videolanorg>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*****************************************************************************/
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#ifndef AVCOMMON_H
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#define AVCOMMON_H 1
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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 <vlc_avcodec.h>
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#include <vlc_configuration.h>
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#include <vlc_variables.h>
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#include <vlc_es.h>
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#include <limits.h>
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#include "avcommon_compat.h"
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# include <libavutil/avutil.h>
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# include <libavutil/dict.h>
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# include <libavutil/cpu.h>
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# include <libavutil/log.h>
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#define VLC_TIME_BASE_Q (AVRational){1, CLOCK_FREQ}
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#define FROM_AVSCALE(x, scale) \
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av_rescale_q((x), (scale), VLC_TIME_BASE_Q)
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#define TO_AVSCALE(x, scale)\
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av_rescale_q((x), VLC_TIME_BASE_Q, (scale))
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#if (CLOCK_FREQ == AV_TIME_BASE)
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#define FROM_AV_TS_NZ(x) (x)
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#define TO_AV_TS_NZ(x) (x)
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#else
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#define FROM_AV_TS_NZ(x) FROM_AVSCALE((x), AV_TIME_BASE_Q)
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#define TO_AV_TS_NZ(x) TO_AVSCALE((x), AV_TIME_BASE_Q)
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#endif
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#define FROM_AV_TS(x) (FROM_AV_TS_NZ(x) + VLC_TICK_0)
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#define TO_AV_TS(x) (TO_AV_TS_NZ((x) - VLC_TICK_0))
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#define AV_OPTIONS_TEXT N_("Advanced options")
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#define AV_OPTIONS_LONGTEXT N_("Advanced options, in the form {opt=val,opt2=val2}.")
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#define AV_RESET_TS_TEXT N_("Reset timestamps")
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#define AV_RESET_TS_LONGTEXT N_("The muxed content will start near a 0 timestamp.")
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static inline void vlc_av_get_options(const char *psz_opts, AVDictionary** pp_dict)
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{
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config_chain_t *cfg = NULL;
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config_ChainParseOptions(&cfg, psz_opts);
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for (config_chain_t *item = cfg; item != NULL; item = item->p_next) {
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av_dict_set(pp_dict, item->psz_name, item->psz_value, 0);
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}
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if (cfg)
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config_ChainDestroy(cfg);
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}
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static inline void vlc_init_avutil(vlc_object_t *obj)
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{
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int level = AV_LOG_QUIET;
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int64_t verbose = var_InheritInteger(obj, "verbose");
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if (verbose >= 0) switch(verbose + VLC_MSG_ERR) {
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case VLC_MSG_ERR:
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level = AV_LOG_ERROR;
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break;
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case VLC_MSG_WARN:
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level = AV_LOG_WARNING;
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break;
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case VLC_MSG_INFO:
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level = AV_LOG_INFO;
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break;
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case VLC_MSG_DBG:
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level = AV_LOG_VERBOSE;
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break;
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default:
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level = AV_LOG_DEBUG;
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break;
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}
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av_log_set_level(level);
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msg_Dbg(obj, "CPU flags: 0x%08x", av_get_cpu_flags());
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}
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#ifdef HAVE_LIBAVFORMAT_AVFORMAT_H
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# include <libavformat/avformat.h>
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# include <libavformat/version.h>
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static inline void vlc_init_avformat(vlc_object_t *obj)
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{
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vlc_avcodec_lock();
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vlc_init_avutil(obj);
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avformat_network_init();
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vlc_avcodec_unlock();
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}
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#endif
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# include <libavcodec/avcodec.h>
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# include <libavcodec/version.h>
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static inline void vlc_init_avcodec(vlc_object_t *obj)
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{
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vlc_avcodec_lock();
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vlc_init_avutil(obj);
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vlc_avcodec_unlock();
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}
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#ifndef AV_ERROR_MAX_STRING_SIZE
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#define AV_ERROR_MAX_STRING_SIZE 64
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#endif
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static inline vlc_rational_t FromAVRational(const AVRational rat)
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{
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return (vlc_rational_t){.num = rat.num, .den = rat.den};
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}
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static inline void set_video_color_settings( const video_format_t *p_fmt, AVCodecContext *p_context )
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{
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switch( p_fmt->color_range )
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{
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case COLOR_RANGE_FULL:
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p_context->color_range = AVCOL_RANGE_JPEG;
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break;
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case COLOR_RANGE_LIMITED:
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p_context->color_range = AVCOL_RANGE_MPEG;
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case COLOR_RANGE_UNDEF: /* do nothing */
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break;
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default:
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p_context->color_range = AVCOL_RANGE_UNSPECIFIED;
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break;
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}
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switch( p_fmt->space )
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{
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case COLOR_SPACE_BT709:
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p_context->colorspace = AVCOL_SPC_BT709;
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break;
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case COLOR_SPACE_BT601:
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p_context->colorspace = AVCOL_SPC_BT470BG;
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break;
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case COLOR_SPACE_BT2020:
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p_context->colorspace = AVCOL_SPC_BT2020_CL;
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break;
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default:
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p_context->colorspace = AVCOL_SPC_UNSPECIFIED;
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break;
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}
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switch( p_fmt->transfer )
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{
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case TRANSFER_FUNC_LINEAR:
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p_context->color_trc = AVCOL_TRC_LINEAR;
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break;
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case TRANSFER_FUNC_SRGB:
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p_context->color_trc = AVCOL_TRC_GAMMA22;
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break;
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case TRANSFER_FUNC_BT470_BG:
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p_context->color_trc = AVCOL_TRC_GAMMA28;
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break;
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case TRANSFER_FUNC_BT470_M:
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p_context->color_trc = AVCOL_TRC_GAMMA22;
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break;
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case TRANSFER_FUNC_BT709:
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p_context->color_trc = AVCOL_TRC_BT709;
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break;
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case TRANSFER_FUNC_SMPTE_ST2084:
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p_context->color_trc = AVCOL_TRC_SMPTEST2084;
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break;
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case TRANSFER_FUNC_SMPTE_240:
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p_context->color_trc = AVCOL_TRC_SMPTE240M;
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break;
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default:
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p_context->color_trc = AVCOL_TRC_UNSPECIFIED;
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break;
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}
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switch( p_fmt->primaries )
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{
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case COLOR_PRIMARIES_BT601_525:
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p_context->color_primaries = AVCOL_PRI_SMPTE170M;
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break;
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case COLOR_PRIMARIES_BT601_625:
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p_context->color_primaries = AVCOL_PRI_BT470BG;
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break;
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case COLOR_PRIMARIES_BT709:
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p_context->color_primaries = AVCOL_PRI_BT709;
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break;
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case COLOR_PRIMARIES_BT2020:
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p_context->color_primaries = AVCOL_PRI_BT2020;
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break;
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case COLOR_PRIMARIES_FCC1953:
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p_context->color_primaries = AVCOL_PRI_BT470M;
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break;
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default:
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p_context->color_primaries = AVCOL_PRI_UNSPECIFIED;
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break;
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}
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switch( p_fmt->chroma_location )
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{
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case CHROMA_LOCATION_LEFT:
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p_context->chroma_sample_location = AVCHROMA_LOC_LEFT;
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break;
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case CHROMA_LOCATION_CENTER:
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p_context->chroma_sample_location = AVCHROMA_LOC_CENTER;
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break;
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case CHROMA_LOCATION_TOP_LEFT:
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p_context->chroma_sample_location = AVCHROMA_LOC_TOPLEFT;
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break;
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case CHROMA_LOCATION_TOP_CENTER:
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p_context->chroma_sample_location = AVCHROMA_LOC_TOP;
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break;
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case CHROMA_LOCATION_BOTTOM_LEFT:
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p_context->chroma_sample_location = AVCHROMA_LOC_BOTTOMLEFT;
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break;
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case CHROMA_LOCATION_BOTTOM_CENTER:
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p_context->chroma_sample_location = AVCHROMA_LOC_BOTTOM;
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break;
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default:
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p_context->chroma_sample_location = AVCHROMA_LOC_UNSPECIFIED;
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break;
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}
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}
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static inline void get_video_color_settings( const AVCodecContext *ctx,
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video_format_t *fmt )
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{
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switch ( ctx->color_range )
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{
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case AVCOL_RANGE_JPEG:
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fmt->color_range = COLOR_RANGE_FULL;
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break;
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case AVCOL_RANGE_MPEG:
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fmt->color_range = COLOR_RANGE_LIMITED;
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break;
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default: /* do nothing */
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break;
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}
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switch( ctx->colorspace )
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{
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case AVCOL_SPC_BT709:
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fmt->space = COLOR_SPACE_BT709;
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break;
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case AVCOL_SPC_SMPTE170M:
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case AVCOL_SPC_BT470BG:
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fmt->space = COLOR_SPACE_BT601;
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break;
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case AVCOL_SPC_BT2020_NCL:
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case AVCOL_SPC_BT2020_CL:
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fmt->space = COLOR_SPACE_BT2020;
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break;
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default:
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break;
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}
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switch( ctx->color_trc )
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{
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case AVCOL_TRC_LINEAR:
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fmt->transfer = TRANSFER_FUNC_LINEAR;
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break;
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case AVCOL_TRC_GAMMA22:
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fmt->transfer = TRANSFER_FUNC_SRGB;
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break;
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case AVCOL_TRC_BT709:
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fmt->transfer = TRANSFER_FUNC_BT709;
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break;
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case AVCOL_TRC_SMPTE170M:
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case AVCOL_TRC_BT2020_10:
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case AVCOL_TRC_BT2020_12:
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fmt->transfer = TRANSFER_FUNC_BT2020;
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break;
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case AVCOL_TRC_ARIB_STD_B67:
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fmt->transfer = TRANSFER_FUNC_ARIB_B67;
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break;
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case AVCOL_TRC_SMPTE2084:
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fmt->transfer = TRANSFER_FUNC_SMPTE_ST2084;
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break;
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case AVCOL_TRC_SMPTE240M:
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fmt->transfer = TRANSFER_FUNC_SMPTE_240;
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break;
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case AVCOL_TRC_GAMMA28:
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fmt->transfer = TRANSFER_FUNC_BT470_BG;
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break;
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default:
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break;
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}
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switch( ctx->color_primaries )
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{
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case AVCOL_PRI_BT709:
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fmt->primaries = COLOR_PRIMARIES_BT709;
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break;
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case AVCOL_PRI_BT470BG:
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fmt->primaries = COLOR_PRIMARIES_BT601_625;
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break;
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case AVCOL_PRI_SMPTE170M:
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case AVCOL_PRI_SMPTE240M:
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fmt->primaries = COLOR_PRIMARIES_BT601_525;
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break;
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case AVCOL_PRI_BT2020:
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fmt->primaries = COLOR_PRIMARIES_BT2020;
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break;
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default:
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break;
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}
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switch( ctx->chroma_sample_location )
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{
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case AVCHROMA_LOC_LEFT:
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fmt->chroma_location = CHROMA_LOCATION_LEFT;
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break;
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case AVCHROMA_LOC_CENTER:
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fmt->chroma_location = CHROMA_LOCATION_CENTER;
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break;
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case AVCHROMA_LOC_TOPLEFT:
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fmt->chroma_location = CHROMA_LOCATION_TOP_LEFT;
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break;
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default:
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break;
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}
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}
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#endif
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