diff options
Diffstat (limited to 'libavcodec/libopenh264enc.c')
| -rw-r--r-- | libavcodec/libopenh264enc.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/libavcodec/libopenh264enc.c b/libavcodec/libopenh264enc.c index fb153c4d58..0f18f80386 100644 --- a/libavcodec/libopenh264enc.c +++ b/libavcodec/libopenh264enc.c @@ -59,6 +59,31 @@ static const AVClass class = { "libopenh264enc", av_default_item_name, options, LIBAVUTIL_VERSION_INT }; +// Convert libopenh264 log level to equivalent libav log level. +static int libopenh264_to_libav_log_level(int libopenh264_log_level) +{ + if (libopenh264_log_level >= WELS_LOG_DETAIL) return AV_LOG_TRACE; + else if (libopenh264_log_level >= WELS_LOG_DEBUG) return AV_LOG_DEBUG; + else if (libopenh264_log_level >= WELS_LOG_INFO) return AV_LOG_VERBOSE; + else if (libopenh264_log_level >= WELS_LOG_WARNING) return AV_LOG_WARNING; + else if (libopenh264_log_level >= WELS_LOG_ERROR) return AV_LOG_ERROR; + else return AV_LOG_QUIET; +} + +// This function will be provided to the libopenh264 library. The function will be called +// when libopenh264 wants to log a message (error, warning, info, etc.). The signature for +// this function (defined in .../codec/api/svc/codec_api.h) is: +// +// typedef void (*WelsTraceCallback) (void* ctx, int level, const char* string); + +static void libopenh264_trace_callback(void *ctx, int level, char const *msg) +{ + // The message will be logged only if the requested EQUIVALENT libav log level is + // less than or equal to the current libav log level. + int equiv_libav_log_level = libopenh264_to_libav_log_level(level); + av_log(ctx, equiv_libav_log_level, "%s\n", msg); +} + static av_cold int svc_encode_close(AVCodecContext *avctx) { SVCContext *s = avctx->priv_data; @@ -73,6 +98,8 @@ static av_cold int svc_encode_init(AVCodecContext *avctx) SVCContext *s = avctx->priv_data; SEncParamExt param = { 0 }; int err = AVERROR_UNKNOWN; + int log_level; + WelsTraceCallback callback_function; // Mingw GCC < 4.7 on x86_32 uses an incorrect/buggy ABI for the WelsGetCodecVersion // function (for functions returning larger structs), thus skip the check in those @@ -90,6 +117,17 @@ static av_cold int svc_encode_init(AVCodecContext *avctx) return AVERROR_UNKNOWN; } + // Pass all libopenh264 messages to our callback, to allow ourselves to filter them. + log_level = WELS_LOG_DETAIL; + (*s->encoder)->SetOption(s->encoder, ENCODER_OPTION_TRACE_LEVEL, &log_level); + + // Set the logging callback function to one that uses av_log() (see implementation above). + callback_function = (WelsTraceCallback) libopenh264_trace_callback; + (*s->encoder)->SetOption(s->encoder, ENCODER_OPTION_TRACE_CALLBACK, (void *)&callback_function); + + // Set the AVCodecContext as the libopenh264 callback context so that it can be passed to av_log(). + (*s->encoder)->SetOption(s->encoder, ENCODER_OPTION_TRACE_CALLBACK_CONTEXT, (void *)&avctx); + (*s->encoder)->GetDefaultParams(s->encoder, ¶m); param.fMaxFrameRate = avctx->time_base.den / avctx->time_base.num; |