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82b7525173
While it is less featureful (and slower) than the built-in H264 decoder, one could potentially want to use it to take advantage of the cisco patent license offer. Signed-off-by: Martin Storsjö <martin@martin.st>
63 lines
2.4 KiB
C
63 lines
2.4 KiB
C
/*
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* OpenH264 shared utils
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* Copyright (C) 2014 Martin Storsjo
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*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav 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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* 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
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <string.h>
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#include <wels/codec_api.h>
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#include <wels/codec_ver.h>
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#include "libavutil/log.h"
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#include "libopenh264.h"
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// Convert libopenh264 log level to equivalent libav log level.
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static int libopenh264_to_libav_log_level(int libopenh264_log_level)
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{
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if (libopenh264_log_level >= WELS_LOG_DETAIL) return AV_LOG_TRACE;
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else if (libopenh264_log_level >= WELS_LOG_DEBUG) return AV_LOG_DEBUG;
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else if (libopenh264_log_level >= WELS_LOG_INFO) return AV_LOG_VERBOSE;
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else if (libopenh264_log_level >= WELS_LOG_WARNING) return AV_LOG_WARNING;
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else if (libopenh264_log_level >= WELS_LOG_ERROR) return AV_LOG_ERROR;
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else return AV_LOG_QUIET;
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}
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void ff_libopenh264_trace_callback(void *ctx, int level, const char *msg)
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{
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// The message will be logged only if the requested EQUIVALENT libav log level is
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// less than or equal to the current libav log level.
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int equiv_libav_log_level = libopenh264_to_libav_log_level(level);
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av_log(ctx, equiv_libav_log_level, "%s\n", msg);
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}
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int ff_libopenh264_check_version(void *logctx)
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{
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// Mingw GCC < 4.7 on x86_32 uses an incorrect/buggy ABI for the WelsGetCodecVersion
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// function (for functions returning larger structs), thus skip the check in those
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// configurations.
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#if !defined(_WIN32) || !defined(__GNUC__) || !ARCH_X86_32 || AV_GCC_VERSION_AT_LEAST(4, 7)
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OpenH264Version libver = WelsGetCodecVersion();
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if (memcmp(&libver, &g_stCodecVersion, sizeof(libver))) {
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av_log(logctx, AV_LOG_ERROR, "Incorrect library version loaded\n");
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return AVERROR(EINVAL);
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}
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#endif
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return 0;
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}
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