diff options
Diffstat (limited to 'libavutil/hwcontext.c')
| -rw-r--r-- | libavutil/hwcontext.c | 44 |
1 files changed, 43 insertions, 1 deletions
diff --git a/libavutil/hwcontext.c b/libavutil/hwcontext.c index 86d290d322..b845658b40 100644 --- a/libavutil/hwcontext.c +++ b/libavutil/hwcontext.c @@ -28,7 +28,7 @@ #include "pixdesc.h" #include "pixfmt.h" -static const HWContextType *hw_table[] = { +static const HWContextType *const hw_table[] = { #if CONFIG_CUDA &ff_hwcontext_type_cuda, #endif @@ -50,6 +50,48 @@ static const HWContextType *hw_table[] = { NULL, }; +static const char *const hw_type_names[] = { + [AV_HWDEVICE_TYPE_CUDA] = "cuda", + [AV_HWDEVICE_TYPE_DXVA2] = "dxva2", + [AV_HWDEVICE_TYPE_QSV] = "qsv", + [AV_HWDEVICE_TYPE_VAAPI] = "vaapi", + [AV_HWDEVICE_TYPE_VDPAU] = "vdpau", + [AV_HWDEVICE_TYPE_VIDEOTOOLBOX] = "videotoolbox", +}; + +enum AVHWDeviceType av_hwdevice_find_type_by_name(const char *name) +{ + int type; + for (type = 0; type < FF_ARRAY_ELEMS(hw_type_names); type++) { + if (hw_type_names[type] && !strcmp(hw_type_names[type], name)) + return type; + } + return AV_HWDEVICE_TYPE_NONE; +} + +const char *av_hwdevice_get_type_name(enum AVHWDeviceType type) +{ + if (type >= 0 && type < FF_ARRAY_ELEMS(hw_type_names)) + return hw_type_names[type]; + else + return NULL; +} + +enum AVHWDeviceType av_hwdevice_iterate_types(enum AVHWDeviceType prev) +{ + enum AVHWDeviceType next; + int i, set = 0; + for (i = 0; hw_table[i]; i++) { + if (prev != AV_HWDEVICE_TYPE_NONE && hw_table[i]->type <= prev) + continue; + if (!set || hw_table[i]->type < next) { + next = hw_table[i]->type; + set = 1; + } + } + return set ? next : AV_HWDEVICE_TYPE_NONE; +} + static const AVClass hwdevice_ctx_class = { .class_name = "AVHWDeviceContext", .item_name = av_default_item_name, |