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[xcode] Add support for seekable custom I/O (evbuffer input to transcode)

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ejurgensen
2021-04-06 16:16:32 +02:00
parent 57449a126a
commit 2bbc5f16c5
4 changed files with 79 additions and 18 deletions
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21
src/transcode.h
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@@ -33,6 +33,16 @@ enum transcode_profile
XCODE_VP8,
};
enum transcode_seek_type
{
XCODE_SEEK_SIZE,
XCODE_SEEK_SET,
XCODE_SEEK_CUR,
};
typedef void transcode_frame;
typedef int64_t(*transcode_seekfn)(void *arg, int64_t offset, enum transcode_seek_type seek_type);
struct decode_ctx;
struct encode_ctx;
struct transcode_ctx
@@ -41,11 +51,18 @@ struct transcode_ctx
struct encode_ctx *encode_ctx;
};
typedef void transcode_frame;
struct transcode_evbuf_io
{
struct evbuffer *evbuf;
// Set to null if no seek support required
transcode_seekfn seekfn;
void *seekfn_arg;
};
// Setting up
struct decode_ctx *
transcode_decode_setup(enum transcode_profile profile, struct media_quality *quality, enum data_kind data_kind, const char *path, struct evbuffer *evbuf, uint32_t song_length);
transcode_decode_setup(enum transcode_profile profile, struct media_quality *quality, enum data_kind data_kind, const char *path, struct transcode_evbuf_io *evbuf_io, uint32_t song_length);
struct encode_ctx *
transcode_encode_setup(enum transcode_profile profile, struct media_quality *quality, struct decode_ctx *src_ctx, off_t *est_size, int width, int height);