static struct demuxer *demux_open_stream(struct MPOpts *opts,
struct stream *stream,
int file_format, bool force,
int audio_id, int video_id, int sub_id,
char *filename,
struct demuxer_params *params)
{
struct demuxer *demuxer = NULL;
const struct demuxer_desc *desc;
// If somebody requested a demuxer check it
if (file_format) {
desc = get_demuxer_desc_from_type(file_format);
if (!desc)
// should only happen with obsolete -demuxer 99 numeric format
return NULL;
return open_given_type(opts, desc, stream, force, audio_id,
video_id, sub_id, filename, params);
}
// Test demuxers with safe file checks
for (int i = 0; (desc = demuxer_list[i]); i++) {
if (desc->safe_check) {
demuxer = open_given_type(opts, desc, stream, false, audio_id,
video_id, sub_id, filename, params);
if (demuxer)
return demuxer;
}
}
// Ok. We're over the stable detectable fileformats, the next ones are
// a bit fuzzy. So by default (extension_parsing==1) try extension-based
// detection first:
if (filename && opts->extension_parsing == 1) {
desc = get_demuxer_desc_from_type(demuxer_type_by_filename(filename));
if (desc)
demuxer = open_given_type(opts, desc, stream, false, audio_id,
video_id, sub_id, filename, params);
if (demuxer)
return demuxer;
}
// Finally try detection for demuxers with unsafe checks
for (int i = 0; (desc = demuxer_list[i]); i++) {
if (!desc->safe_check && desc->check_file) {
demuxer = open_given_type(opts, desc, stream, false, audio_id,
video_id, sub_id, filename, params);
if (demuxer)
return demuxer;
}
}
return NULL;
}
static struct demuxer *open_given_type(struct MPOpts *opts,
const struct demuxer_desc *desc,
struct stream *stream, bool force,
int audio_id, int video_id, int sub_id,
char *filename,
struct demuxer_params *params)
{
struct demuxer *demuxer;
int fformat;
demuxer = new_demuxer(opts, stream, desc->type, audio_id,
video_id, sub_id, filename);
demuxer->params = params;
if (desc->check_file)
fformat = desc->check_file(demuxer);
else
fformat = desc->type;
if (force)
fformat = desc->type;
if (fformat == 0)
goto fail;
if (fformat == desc->type) {
if (demuxer->filetype)
mp_tmsg(MSGT_DEMUXER, MSGL_INFO, "Detected file format: %s (%s)\n",
demuxer->filetype, desc->shortdesc);
else
mp_tmsg(MSGT_DEMUXER, MSGL_INFO, "Detected file format: %s\n",
desc->shortdesc);
if (demuxer->desc->open) {
struct demuxer *demux2 = demuxer->desc->open(demuxer);
if (!demux2) {
mp_tmsg(MSGT_DEMUXER, MSGL_ERR, "Opening as detected format "
"\"%s\" failed.\n", desc->shortdesc);
goto fail;
}
/* At least demux_mov can return a demux_demuxers instance
* from open() instead of the original fed in. */
demuxer = demux2;
}
demuxer->file_format = fformat;
return demuxer;
} else {
// demux_mov can return playlist instead of mov
if (fformat == DEMUXER_TYPE_PLAYLIST)
return demuxer; // handled in mplayer.c
/* Internal MPEG PS demuxer check can return other MPEG subtypes
* which don't have their own checks; recurse to try opening as
* the returned type instead. */
free_demuxer(demuxer);
desc = get_demuxer_desc_from_type(fformat);
if (!desc) {
mp_msg(MSGT_DEMUXER, MSGL_ERR,
"BUG: recursion to nonexistent file format\n");
return NULL;
}
return open_given_type(opts, desc, stream, false, audio_id,
video_id, sub_id, filename, params);
}
fail:
free_demuxer(demuxer);
return NULL;
}
static struct demuxer *demux_open_stream(struct MPOpts *opts,
struct stream *stream,
int file_format, bool force,
int audio_id, int video_id, int sub_id,
char *filename,
struct demuxer_params *params)
{
struct demuxer *demuxer = NULL;
const struct demuxer_desc *desc;
// If somebody requested a demuxer check it
if (file_format) {
desc = get_demuxer_desc_from_type(file_format);
if (!desc)
// should only happen with obsolete -demuxer 99 numeric format
return NULL;
demuxer = open_given_type(opts, desc, stream, force, audio_id,
video_id, sub_id, filename, params);
if (demuxer)
goto dmx_open;
return NULL;
}
// Test demuxers with safe file checks
for (int i = 0; (desc = demuxer_list[i]); i++) {
if (desc->safe_check) {
demuxer = open_given_type(opts, desc, stream, false, audio_id,
video_id, sub_id, filename, params);
if (demuxer)
goto dmx_open;
}
}
// Ok. We're over the stable detectable fileformats, the next ones are
// a bit fuzzy. So by default (extension_parsing==1) try extension-based
// detection first:
if (filename && opts->extension_parsing == 1) {
desc = get_demuxer_desc_from_type(demuxer_type_by_filename(filename));
if (desc)
demuxer = open_given_type(opts, desc, stream, false, audio_id,
video_id, sub_id, filename, params);
if (demuxer)
goto dmx_open;
}
// Finally try detection for demuxers with unsafe checks
for (int i = 0; (desc = demuxer_list[i]); i++) {
if (!desc->safe_check && desc->check_file) {
demuxer = open_given_type(opts, desc, stream, false, audio_id,
video_id, sub_id, filename, params);
if (demuxer)
goto dmx_open;
}
}
return NULL;
dmx_open:
if (demuxer->type == DEMUXER_TYPE_PLAYLIST)
return demuxer;
struct sh_video *sh_video = demuxer->video->sh;
if (sh_video && sh_video->bih) {
int biComp = le2me_32(sh_video->bih->biCompression);
mp_msg(MSGT_DEMUX, MSGL_INFO,
"VIDEO: [%.4s] %dx%d %dbpp %5.3f fps %5.1f kbps (%4.1f kbyte/s)\n",
(char *) &biComp, sh_video->bih->biWidth,
sh_video->bih->biHeight, sh_video->bih->biBitCount,
sh_video->fps, sh_video->i_bps * 0.008f,
sh_video->i_bps / 1024.0f);
}
return demuxer;
}
