Wow, Ronald:
Thanks !!!! But this seems to be the part that cannot be compiled/built
successfully under Visual Studio, right?
Alright... Thanks!! I'll manually modify it....
Thank you !!!
/**
> * Define a function for building a string containing a list of
> * allowed formats,
> */
> #define DEF_CHOOSE_FORMAT(type, var, supported_list, none, get_name,
> separator) \
> static char *choose_ ## var ## s(OutputStream *ost)
> \
> {
> \
> if (ost->st->codec->var != none) {
> \
> get_name(ost->st->codec->var);
> \
> return av_strdup(name);
> \
> } else if (ost->enc->supported_list) {
> \
> const type *p;
> \
> AVIOContext *s = NULL;
> \
> uint8_t *ret;
> \
> int len;
> \
>
> \
> if (avio_open_dyn_buf(&s) < 0)
> \
> exit_program(1);
> \
>
> \
> for (p = ost->enc->supported_list; *p != none; p++) {
> \
> get_name(*p);
> \
> avio_printf(s, "%s" separator, name);
> \
> }
> \
> len = avio_close_dyn_buf(s, &ret);
> \
> ret[len - 1] = 0;
> \
> return ret;
> \
> } else
> \
> return NULL;
> \
> }
> #define GET_PIX_FMT_NAME(pix_fmt)\
> const char *name = av_get_pix_fmt_name(pix_fmt);
> DEF_CHOOSE_FORMAT(enum PixelFormat, pix_fmt, pix_fmts, PIX_FMT_NONE,
> GET_PIX_FMT_NAME, ":")
> #define GET_SAMPLE_FMT_NAME(sample_fmt)\
> const char *name = av_get_sample_fmt_name(sample_fmt)
> DEF_CHOOSE_FORMAT(enum AVSampleFormat, sample_fmt, sample_fmts,
> AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME, ",")
> #define GET_SAMPLE_RATE_NAME(rate)\
> char name[16];\
> snprintf(name, sizeof(name), "%d", rate);
> DEF_CHOOSE_FORMAT(int, sample_rate, supported_samplerates, 0,
> GET_SAMPLE_RATE_NAME, ",")
> #define GET_CH_LAYOUT_NAME(ch_layout)\
> char name[16];\
> snprintf(name, sizeof(name), "0x%"PRIx64, ch_layout);
> DEF_CHOOSE_FORMAT(uint64_t, channel_layout, channel_layouts, 0,
> GET_CH_LAYOUT_NAME, ",")
On Wed, Aug 8, 2012 at 9:04 PM, Ronald S. Bultje <[email protected]> wrote:
> Hi,
>
> On Wed, Aug 8, 2012 at 6:56 PM, JIA Pei <[email protected]> wrote:
> >
> > Hi, all:
> >
> > I'm trying to build avconv.c ... However, I can't find a place that
> defines
> > the following 4 functions:
> >>
> >> choose_pix_fmts()
> >> choose_sample_fmts()
> >> choose_sample_rates()
> >> choose_channel_layouts()
>
> See DEF_CHOOSE_FORMAT(), line 460.
>
> Ronald
> _______________________________________________
> libav-devel mailing list
> [email protected]
> https://lists.libav.org/mailman/listinfo/libav-devel
>
--
Pei JIA
Email: [email protected]
cell: +1 604-362-5816
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