1/*
2 * OpenH264 shared utils
3 * Copyright (C) 2014 Martin Storsjo
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22#include <string.h>
23#include <wels/codec_api.h>
24#include <wels/codec_ver.h>
25
26#include "libavutil/error.h"
27#include "libavutil/log.h"
28
29#include "libopenh264.h"
30
31// Convert libopenh264 log level to equivalent ffmpeg log level.
32static int libopenh264_to_ffmpeg_log_level(int libopenh264_log_level)
33{
34    if      (libopenh264_log_level >= WELS_LOG_DETAIL)  return AV_LOG_TRACE;
35    else if (libopenh264_log_level >= WELS_LOG_DEBUG)   return AV_LOG_DEBUG;
36    else if (libopenh264_log_level >= WELS_LOG_INFO)    return AV_LOG_VERBOSE;
37    else if (libopenh264_log_level >= WELS_LOG_WARNING) return AV_LOG_WARNING;
38    else if (libopenh264_log_level >= WELS_LOG_ERROR)   return AV_LOG_ERROR;
39    else                                                return AV_LOG_QUIET;
40}
41
42void ff_libopenh264_trace_callback(void *ctx, int level, const char *msg)
43{
44    // The message will be logged only if the requested EQUIVALENT ffmpeg log level is
45    // less than or equal to the current ffmpeg log level.
46    int equiv_ffmpeg_log_level = libopenh264_to_ffmpeg_log_level(level);
47    av_log(ctx, equiv_ffmpeg_log_level, "%s\n", msg);
48}
49
50int ff_libopenh264_check_version(void *logctx)
51{
52    // Mingw GCC < 4.7 on x86_32 uses an incorrect/buggy ABI for the WelsGetCodecVersion
53    // function (for functions returning larger structs), thus skip the check in those
54    // configurations.
55#if !defined(_WIN32) || !defined(__GNUC__) || !ARCH_X86_32 || AV_GCC_VERSION_AT_LEAST(4, 7)
56    OpenH264Version libver = WelsGetCodecVersion();
57    if (memcmp(&libver, &g_stCodecVersion, sizeof(libver))) {
58        av_log(logctx, AV_LOG_ERROR, "Incorrect library version loaded\n");
59        return AVERROR(EINVAL);
60    }
61#endif
62    return 0;
63}
64