Quoting Mark Thompson (2017-02-19 19:46:24)
> ---
> libavutil/hwcontext.c | 11 +++++++++++
> libavutil/hwcontext.h | 8 ++++++++
> 2 files changed, 19 insertions(+)
>
> diff --git a/libavutil/hwcontext.c b/libavutil/hwcontext.c
> index 1f9442622..e3484c78c 100644
> --- a/libavutil/hwcontext.c
> +++ b/libavutil/hwcontext.c
> @@ -18,6 +18,7 @@
>
> #include "config.h"
>
> +#include "avstring.h"
> #include "buffer.h"
> #include "common.h"
> #include "hwcontext.h"
> @@ -47,6 +48,16 @@ static const HWContextType * const hw_table[] = {
> NULL,
> };
>
> +enum AVHWDeviceType av_hwdevice_find_type_by_name(const char *name)
> +{
> + int i;
> + for (i = 0; hw_table[i]; i++) {
> + if (!av_strcasecmp(hw_table[i]->name, name))
> + return hw_table[i]->type;
> + }
> + return -1;
> +}
> +
> static const AVClass hwdevice_ctx_class = {
> .class_name = "AVHWDeviceContext",
> .item_name = av_default_item_name,
> diff --git a/libavutil/hwcontext.h b/libavutil/hwcontext.h
> index a31799267..98f9172ee 100644
> --- a/libavutil/hwcontext.h
> +++ b/libavutil/hwcontext.h
> @@ -223,6 +223,14 @@ typedef struct AVHWFramesContext {
> } AVHWFramesContext;
>
> /**
> + * Look up an AVHWDeviceType by name.
> + *
> + * @param name String name of the device type (case-insensitive).
> + * @return The type from enum AVHWDeviceType, or -1 on failure.
> + */
> +enum AVHWDeviceType av_hwdevice_find_type_by_name(const char *name);
> +
> +/**
> * Allocate an AVHWDeviceContext for a given pixel format.
> *
> * @return a reference to the newly created AVHWDeviceContext on success or
> NULL
> --
> 2.11.0
Would you mind adding a function for enumerating available device types
while you're at it? I can imagine that being quite useful to some
callers.
--
Anton Khirnov
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