diff options
| -rw-r--r-- | .gitignore | 1 | ||||
| -rw-r--r-- | libavcodec/Makefile | 6 | ||||
| -rw-r--r-- | libavcodec/avcodec.h | 6 | ||||
| -rwxr-xr-x | libavcodec/codec_names.sh | 85 | ||||
| -rw-r--r-- | libavcodec/utils.c | 19 |
5 files changed, 117 insertions, 0 deletions
diff --git a/.gitignore b/.gitignore index 958dd71668..e7585e3d7f 100644 --- a/.gitignore +++ b/.gitignore @@ -20,6 +20,7 @@ avconv libavcodec/*_tablegen libavcodec/*_tables.c libavcodec/*_tables.h +libavcodec/codec_names.h libavcodec/libavcodec* libavcore/libavcore* libavdevice/libavdevice* diff --git a/libavcodec/Makefile b/libavcodec/Makefile index 147c1b3587..ac47c99aab 100644 --- a/libavcodec/Makefile +++ b/libavcodec/Makefile @@ -735,3 +735,9 @@ $(SUBDIR)motionpixels.o: $(SUBDIR)motionpixels_tables.h $(SUBDIR)pcm.o: $(SUBDIR)pcm_tables.h $(SUBDIR)qdm2.o: $(SUBDIR)qdm2_tables.h endif + +CODEC_NAMES_SH := $(SRC_PATH)/$(SUBDIR)codec_names.sh +AVCODEC_H := $(SRC_PATH)/$(SUBDIR)avcodec.h +$(SUBDIR)codec_names.h: $(CODEC_NAMES_SH) config.h $(AVCODEC_H) + $(M)$(CODEC_NAMES_SH) config.h $(AVCODEC_H) $@ +$(SUBDIR)utils.o: $(SUBDIR)codec_names.h diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h index 2617f65ccc..2c5e70b136 100644 --- a/libavcodec/avcodec.h +++ b/libavcodec/avcodec.h @@ -3433,6 +3433,12 @@ int avpicture_layout(const AVPicture* src, enum PixelFormat pix_fmt, int width, int avpicture_get_size(enum PixelFormat pix_fmt, int width, int height); void avcodec_get_chroma_sub_sample(enum PixelFormat pix_fmt, int *h_shift, int *v_shift); +/** + * Get the name of a codec. + * @return a static string identifying the codec; never NULL + */ +const char *avcodec_get_name(enum CodecID id); + #if FF_API_GET_PIX_FMT_NAME /** * Return the short name for a pixel format. diff --git a/libavcodec/codec_names.sh b/libavcodec/codec_names.sh new file mode 100755 index 0000000000..4d86c197ec --- /dev/null +++ b/libavcodec/codec_names.sh @@ -0,0 +1,85 @@ +#!/bin/sh + +# Copyright (c) 2011 Nicolas George +# +# This file is part of FFmpeg. +# +# FFmpeg is free software; you can redistribute it and/or +# modify it under the terms of the GNU Lesser General Public +# License as published by the Free Software Foundation; either +# version 2.1 of the License, or (at your option) any later version. +# +# FFmpeg is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# Lesser General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public +# License along with FFmpeg; if not, write to the Free Software Foundation, +# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + +set -e + +config="$1" +codecs="$2" +out="$3" +test -n "$out" + +outval="" + +add_line () { + outval="$outval$* +" +} + +parse_config_h () { + while read define var value; do + case "$define $var $value" in + "#define CONFIG_"*_*" 1") eval "$var=1";; + esac + done +} + +define_codecid () { + id="$1" + n=${1#CODEC_ID_} + add_line "case ${id}:" + eval "c=\${CONFIG_${n}_DECODER}:\${CONFIG_${n}_ENCODER}" + case "$c" in + 1:*) s="decoder";; + *:1) s="encoder";; + *) s="";; + esac + case "$s" in + "") add_line " return \"$n\";" ;; + *) + add_line " { extern AVCodec ff_${n}_${s};" + add_line " return ff_${n}_${s}.name; }" + ;; + esac +} + +parse_enum_codecid () { + while read line; do + case "$line" in + "};") break;; + *CODEC_ID_FIRST*///*dummy*) ;; + CODEC_ID_*) define_codecid ${line%%[=,]*};; + esac + done +} + +parse_avcodec_h () { + while read line; do + case "$line" in + "enum CodecID {") parse_enum_codecid; break;; + esac + done +} + +parse_config_h < "$config" +parse_avcodec_h < "$codecs" +sed -e '/case.*:/ ! y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/' \ + -e 's/extern avcodec /extern AVCodec /' > "$out" <<EOF +$outval +EOF diff --git a/libavcodec/utils.c b/libavcodec/utils.c index ce8c0993a9..1d5ec44d36 100644 --- a/libavcodec/utils.c +++ b/libavcodec/utils.c @@ -984,6 +984,25 @@ static int get_bit_rate(AVCodecContext *ctx) return bit_rate; } +const char *avcodec_get_name(enum CodecID id) +{ + AVCodec *codec; + +#if !CONFIG_SMALL + switch (id) { +#include "libavcodec/codec_names.h" + } + av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id); +#endif + codec = avcodec_find_decoder(id); + if (codec) + return codec->name; + codec = avcodec_find_encoder(id); + if (codec) + return codec->name; + return "unknown_codec"; +} + size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag) { int i, len, ret = 0; |