diff options
| -rw-r--r-- | libavformat/Makefile | 1 | ||||
| -rw-r--r-- | libavformat/format.c | 187 | ||||
| -rw-r--r-- | libavformat/utils.c | 150 |
3 files changed, 188 insertions, 150 deletions
diff --git a/libavformat/Makefile b/libavformat/Makefile index 5438b483d3..b1f70d3786 100644 --- a/libavformat/Makefile +++ b/libavformat/Makefile @@ -11,6 +11,7 @@ OBJS = allformats.o \ avio.o \ aviobuf.o \ cutils.o \ + format.o \ id3v1.o \ id3v2.o \ metadata.o \ diff --git a/libavformat/format.c b/libavformat/format.c new file mode 100644 index 0000000000..c1be85983a --- /dev/null +++ b/libavformat/format.c @@ -0,0 +1,187 @@ +/* + * Format register and lookup + * Copyright (c) 2000, 2001, 2002 Fabrice Bellard + * + * 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 + */ + +#include "avformat.h" +#include "internal.h" +#include "libavutil/avstring.h" + +/** + * @file + * Format register and lookup + */ +/** head of registered input format linked list */ +static AVInputFormat *first_iformat = NULL; +/** head of registered output format linked list */ +static AVOutputFormat *first_oformat = NULL; + +AVInputFormat *av_iformat_next(AVInputFormat *f) +{ + if (f) + return f->next; + else + return first_iformat; +} + +AVOutputFormat *av_oformat_next(AVOutputFormat *f) +{ + if (f) + return f->next; + else + return first_oformat; +} + +void av_register_input_format(AVInputFormat *format) +{ + AVInputFormat **p = &first_iformat; + + while (*p != NULL) + p = &(*p)->next; + + *p = format; + format->next = NULL; +} + +void av_register_output_format(AVOutputFormat *format) +{ + AVOutputFormat **p = &first_oformat; + + while (*p != NULL) + p = &(*p)->next; + + *p = format; + format->next = NULL; +} + +int av_match_ext(const char *filename, const char *extensions) +{ + const char *ext, *p; + char ext1[32], *q; + + if (!filename) + return 0; + + ext = strrchr(filename, '.'); + if (ext) { + ext++; + p = extensions; + for (;;) { + q = ext1; + while (*p != '\0' && *p != ',' && q - ext1 < sizeof(ext1) - 1) + *q++ = *p++; + *q = '\0'; + if (!av_strcasecmp(ext1, ext)) + return 1; + if (*p == '\0') + break; + p++; + } + } + return 0; +} + +static int match_format(const char *name, const char *names) +{ + const char *p; + int len, namelen; + + if (!name || !names) + return 0; + + namelen = strlen(name); + while ((p = strchr(names, ','))) { + len = FFMAX(p - names, namelen); + if (!av_strncasecmp(name, names, len)) + return 1; + names = p + 1; + } + return !av_strcasecmp(name, names); +} + +AVOutputFormat *av_guess_format(const char *short_name, const char *filename, + const char *mime_type) +{ + AVOutputFormat *fmt = NULL, *fmt_found; + int score_max, score; + + /* specific test for image sequences */ +#if CONFIG_IMAGE2_MUXER + if (!short_name && filename && + av_filename_number_test(filename) && + ff_guess_image2_codec(filename) != AV_CODEC_ID_NONE) { + return av_guess_format("image2", NULL, NULL); + } +#endif + /* Find the proper file type. */ + fmt_found = NULL; + score_max = 0; + while ((fmt = av_oformat_next(fmt))) { + score = 0; + if (fmt->name && short_name && match_format(short_name, fmt->name)) + score += 100; + if (fmt->mime_type && mime_type && !strcmp(fmt->mime_type, mime_type)) + score += 10; + if (filename && fmt->extensions && + av_match_ext(filename, fmt->extensions)) { + score += 5; + } + if (score > score_max) { + score_max = score; + fmt_found = fmt; + } + } + return fmt_found; +} + +enum AVCodecID av_guess_codec(AVOutputFormat *fmt, const char *short_name, + const char *filename, const char *mime_type, + enum AVMediaType type) +{ + if (!strcmp(fmt->name, "segment") || !strcmp(fmt->name, "ssegment")) { + fmt = av_guess_format(NULL, filename, NULL); + } + + if (type == AVMEDIA_TYPE_VIDEO) { + enum AVCodecID codec_id = AV_CODEC_ID_NONE; + +#if CONFIG_IMAGE2_MUXER + if (!strcmp(fmt->name, "image2") || !strcmp(fmt->name, "image2pipe")) { + codec_id = ff_guess_image2_codec(filename); + } +#endif + if (codec_id == AV_CODEC_ID_NONE) + codec_id = fmt->video_codec; + return codec_id; + } else if (type == AVMEDIA_TYPE_AUDIO) + return fmt->audio_codec; + else if (type == AVMEDIA_TYPE_SUBTITLE) + return fmt->subtitle_codec; + else + return AV_CODEC_ID_NONE; +} + +AVInputFormat *av_find_input_format(const char *short_name) +{ + AVInputFormat *fmt = NULL; + while ((fmt = av_iformat_next(fmt))) + if (match_format(short_name, fmt->name)) + return fmt; + return NULL; +} diff --git a/libavformat/utils.c b/libavformat/utils.c index 36ac17fb2b..546144a3c9 100644 --- a/libavformat/utils.c +++ b/libavformat/utils.c @@ -103,156 +103,6 @@ static int64_t wrap_timestamp(AVStream *st, int64_t timestamp) MAKE_ACCESSORS(AVStream, stream, AVRational, r_frame_rate) -/** head of registered input format linked list */ -static AVInputFormat *first_iformat = NULL; -/** head of registered output format linked list */ -static AVOutputFormat *first_oformat = NULL; - -AVInputFormat *av_iformat_next(AVInputFormat *f) -{ - if(f) return f->next; - else return first_iformat; -} - -AVOutputFormat *av_oformat_next(AVOutputFormat *f) -{ - if(f) return f->next; - else return first_oformat; -} - -void av_register_input_format(AVInputFormat *format) -{ - AVInputFormat **p; - p = &first_iformat; - while (*p != NULL) p = &(*p)->next; - *p = format; - format->next = NULL; -} - -void av_register_output_format(AVOutputFormat *format) -{ - AVOutputFormat **p; - p = &first_oformat; - while (*p != NULL) p = &(*p)->next; - *p = format; - format->next = NULL; -} - -int av_match_ext(const char *filename, const char *extensions) -{ - const char *ext, *p; - char ext1[32], *q; - - if(!filename) - return 0; - - ext = strrchr(filename, '.'); - if (ext) { - ext++; - p = extensions; - for(;;) { - q = ext1; - while (*p != '\0' && *p != ',' && q-ext1<sizeof(ext1)-1) - *q++ = *p++; - *q = '\0'; - if (!av_strcasecmp(ext1, ext)) - return 1; - if (*p == '\0') - break; - p++; - } - } - return 0; -} - -static int match_format(const char *name, const char *names) -{ - const char *p; - int len, namelen; - - if (!name || !names) - return 0; - - namelen = strlen(name); - while ((p = strchr(names, ','))) { - len = FFMAX(p - names, namelen); - if (!av_strncasecmp(name, names, len)) - return 1; - names = p+1; - } - return !av_strcasecmp(name, names); -} - -AVOutputFormat *av_guess_format(const char *short_name, const char *filename, - const char *mime_type) -{ - AVOutputFormat *fmt = NULL, *fmt_found; - int score_max, score; - - /* specific test for image sequences */ -#if CONFIG_IMAGE2_MUXER - if (!short_name && filename && - av_filename_number_test(filename) && - ff_guess_image2_codec(filename) != AV_CODEC_ID_NONE) { - return av_guess_format("image2", NULL, NULL); - } -#endif - /* Find the proper file type. */ - fmt_found = NULL; - score_max = 0; - while ((fmt = av_oformat_next(fmt))) { - score = 0; - if (fmt->name && short_name && match_format(short_name, fmt->name)) - score += 100; - if (fmt->mime_type && mime_type && !strcmp(fmt->mime_type, mime_type)) - score += 10; - if (filename && fmt->extensions && - av_match_ext(filename, fmt->extensions)) { - score += 5; - } - if (score > score_max) { - score_max = score; - fmt_found = fmt; - } - } - return fmt_found; -} - -enum AVCodecID av_guess_codec(AVOutputFormat *fmt, const char *short_name, - const char *filename, const char *mime_type, enum AVMediaType type){ - if (!strcmp(fmt->name, "segment") || !strcmp(fmt->name, "ssegment")) { - fmt = av_guess_format(NULL, filename, NULL); - } - - if(type == AVMEDIA_TYPE_VIDEO){ - enum AVCodecID codec_id= AV_CODEC_ID_NONE; - -#if CONFIG_IMAGE2_MUXER - if(!strcmp(fmt->name, "image2") || !strcmp(fmt->name, "image2pipe")){ - codec_id= ff_guess_image2_codec(filename); - } -#endif - if(codec_id == AV_CODEC_ID_NONE) - codec_id= fmt->video_codec; - return codec_id; - }else if(type == AVMEDIA_TYPE_AUDIO) - return fmt->audio_codec; - else if (type == AVMEDIA_TYPE_SUBTITLE) - return fmt->subtitle_codec; - else - return AV_CODEC_ID_NONE; -} - -AVInputFormat *av_find_input_format(const char *short_name) -{ - AVInputFormat *fmt = NULL; - while ((fmt = av_iformat_next(fmt))) { - if (match_format(short_name, fmt->name)) - return fmt; - } - return NULL; -} - /* an arbitrarily chosen "sane" max packet size -- 50M */ #define SANE_CHUNK_SIZE (50000000) |