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Code Issues Releases Activity

LAVFAPI: demuxer specific options.

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(someone please add doxy)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2011-04-30 21:35:48 +02:00
parent ce62b35c31
commit 492026209b
2 changed files with 27 additions and 2 deletions
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5
libavformat/avformat.h
View File

@ -423,6 +423,8 @@ typedef struct AVInputFormat {
const AVMetadataConv *metadata_conv;
#endif
const AVClass *priv_class; ///< AVClass for the private context
/* private fields */
struct AVInputFormat *next;
} AVInputFormat;
@ -726,6 +728,7 @@ typedef struct AVFormatContext {
#define AVFMT_FLAG_NOPARSE 0x0020 ///< Do not use AVParsers, you also must set AVFMT_FLAG_NOFILLIN as the fillin code works on frames and no parsing -> no frames. Also seeking to frames can not work if parsing to find frame boundaries has been disabled
#define AVFMT_FLAG_RTP_HINT 0x0040 ///< Add RTP hinting to the output file
#define AVFMT_FLAG_SORT_DTS 0x10000 ///< try to interleave outputted packets by dts (using this flag can slow demuxing down)
#define AVFMT_FLAG_PRIV_OPT 0x20000 ///< Enable use of private options by delaying codec open (this could be made default once all code is converted)
int loop_input;
@ -1040,6 +1043,8 @@ int av_open_input_file(AVFormatContext **ic_ptr, const char *filename,
int buf_size,
AVFormatParameters *ap);
int av_demuxer_open(AVFormatContext *ic, AVFormatParameters *ap);
/**
* Allocate an AVFormatContext.
* avformat_free_context() can be used to free the context and everything

24
libavformat/utils.c
View File

@ -429,6 +429,10 @@ int av_open_input_stream(AVFormatContext **ic_ptr,
err = AVERROR(ENOMEM);
goto fail;
}
if (fmt->priv_class) {
*(const AVClass**)ic->priv_data= fmt->priv_class;
av_opt_set_defaults(ic->priv_data);
}
} else {
ic->priv_data = NULL;
}
@ -437,13 +441,13 @@ int av_open_input_stream(AVFormatContext **ic_ptr,
if (ic->pb)
ff_id3v2_read(ic, ID3v2_DEFAULT_MAGIC);
if (ic->iformat->read_header) {
if (!(ic->flags&AVFMT_FLAG_PRIV_OPT) && ic->iformat->read_header) {
err = ic->iformat->read_header(ic, ap);
if (err < 0)
goto fail;
}
if (pb && !ic->data_offset)
if (!(ic->flags&AVFMT_FLAG_PRIV_OPT) && pb && !ic->data_offset)
ic->data_offset = avio_tell(ic->pb);
ic->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
@ -470,6 +474,22 @@ int av_open_input_stream(AVFormatContext **ic_ptr,
return err;
}
int av_demuxer_open(AVFormatContext *ic, AVFormatParameters *ap){
int err;
if (ic->iformat->read_header) {
err = ic->iformat->read_header(ic, ap);
if (err < 0)
return err;
}
if (ic->pb && !ic->data_offset)
ic->data_offset = avio_tell(ic->pb);
return 0;
}
/** size of probe buffer, for guessing file type from file contents */
#define PROBE_BUF_MIN 2048
#define PROBE_BUF_MAX (1<<20)