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command: export list of all decoders

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Was only available via --vd=help and --ad=help (i.e. not at all via
client API). Not bothering with separating audio and video codecs, since
this list isn't all that useful anyway in general. If someone complains,
a type field could be added.
This commit is contained in:
wm4
2016-02-29 20:57:31 +01:00
parent 0a1e926670
commit d7de123110
2 changed files with 64 additions and 0 deletions
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32
DOCS/man/input.rst
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@@ -1988,6 +1988,38 @@ Property list
In some cases, the protocol will not actually be supported (consider
``https`` if ffmpeg is not compiled with TLS support).
``decoder-list``
List of decoders supported. This lists decoders which can be passed to
``--vd`` and ``--ad``.
``family``
Decoder driver. Usually ``lavc`` for libavcodec.
``codec``
Canonical codec name, which identifies the format the decoder can
handle.
``decoder``
The name of the decoder itself. Often, this is the same as ``codec``.
Sometimes it can be different. It is used to distinguish multiple
decoders for the same codec.
``description``
Human readable description of the decoder and codec.
When querying the property with the client API using ``MPV_FORMAT_NODE``,
or with Lua ``mp.get_property_native``, this will return a mpv_node with
the following contents:
::
MPV_FORMAT_NODE_ARRAY
MPV_FORMAT_NODE_MAP (for each decoder entry)
"family" MPV_FORMAT_STRING
"codec" MPV_FORMAT_STRING
"decoder" MPV_FORMAT_STRING
"description" MPV_FORMAT_STRING
``mpv-version``
Return the mpv version/copyright string. Depending on how the binary was
built, it might contain either a release version, or just a git hash.

32
player/command.c
View File

@@ -32,6 +32,7 @@
#include "config.h"
#include "mpv_talloc.h"
#include "client.h"
#include "common/codecs.h"
#include "common/msg.h"
#include "common/msg_control.h"
#include "command.h"
@@ -3290,6 +3291,36 @@ static int mp_property_protocols(void *ctx, struct m_property *prop,
return M_PROPERTY_NOT_IMPLEMENTED;
}
static int get_decoder_entry(int item, int action, void *arg, void *ctx)
{
struct mp_decoder_list *codecs = ctx;
struct mp_decoder_entry *c = &codecs->entries[item];
struct m_sub_property props[] = {
{"family", SUB_PROP_STR(c->family)},
{"codec", SUB_PROP_STR(c->codec)},
{"decoder", SUB_PROP_STR(c->decoder)},
{"description", SUB_PROP_STR(c->desc)},
{0}
};
return m_property_read_sub(props, action, arg);
}
static int mp_property_decoders(void *ctx, struct m_property *prop,
int action, void *arg)
{
struct mp_decoder_list *codecs = talloc_zero(NULL, struct mp_decoder_list);
struct mp_decoder_list *v = talloc_steal(codecs, video_decoder_list());
struct mp_decoder_list *a = talloc_steal(codecs, audio_decoder_list());
mp_append_decoders(codecs, v);
mp_append_decoders(codecs, a);
int r = m_property_read_list(action, arg, codecs->num_entries,
get_decoder_entry, codecs);
talloc_free(codecs);
return r;
}
static int mp_property_version(void *ctx, struct m_property *prop,
int action, void *arg)
{
@@ -3707,6 +3738,7 @@ static const struct m_property mp_properties[] = {
{"working-directory", mp_property_cwd},
{"protocol-list", mp_property_protocols},
{"decoder-list", mp_property_decoders},
{"mpv-version", mp_property_version},
{"mpv-configuration", mp_property_configuration},