mirror of
https://github.com/owntone/owntone-server.git
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1fbb4b0d59
It seems ffmpeg/libav reads a file type like Monkey's audio in large chunks, so that each packet must be passed to the decoder multiple times. The decoder will return 0 until the packet is completed. This change makes forked-daapd able to deal with a return value of 0.
107 lines
3.0 KiB
C
107 lines
3.0 KiB
C
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#ifndef __TRANSCODE_H__
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#define __TRANSCODE_H__
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#include <event2/buffer.h>
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#include "db.h"
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#include "http.h"
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#define XCODE_WAVHEADER (1 << 14)
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#define XCODE_HAS_VIDEO (1 << 15)
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enum transcode_profile
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{
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// Transcodes the best available audio stream into PCM16 (does not add wav header)
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XCODE_PCM16_NOHEADER = 1,
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// Transcodes the best available audio stream into PCM16 (with wav header)
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XCODE_PCM16_HEADER = XCODE_WAVHEADER | 2,
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// Transcodes the best available audio stream into MP3
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XCODE_MP3 = 3,
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// Transcodes video + audio + subtitle streams (not tested - for future use)
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XCODE_H264_AAC = XCODE_HAS_VIDEO | 4,
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};
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struct decode_ctx;
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struct encode_ctx;
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struct transcode_ctx;
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struct decoded_frame;
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// Setting up
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struct decode_ctx *
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transcode_decode_setup(struct media_file_info *mfi, int decode_video);
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struct encode_ctx *
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transcode_encode_setup(struct decode_ctx *src_ctx, enum transcode_profile profile, off_t *est_size);
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struct transcode_ctx *
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transcode_setup(struct media_file_info *mfi, enum transcode_profile profile, off_t *est_size);
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struct decode_ctx *
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transcode_decode_setup_raw(void);
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int
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transcode_needed(const char *user_agent, const char *client_codecs, char *file_codectype);
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// Cleaning up
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void
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transcode_decode_cleanup(struct decode_ctx *ctx);
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void
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transcode_encode_cleanup(struct encode_ctx *ctx);
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void
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transcode_cleanup(struct transcode_ctx *ctx);
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void
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transcode_decoded_free(struct decoded_frame *decoded);
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// Transcoding
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/* Demuxes and decodes the next packet from the input.
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*
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* @out decoded A newly allocated struct with a pointer to the frame and the
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* stream. Must be freed with transcode_decoded_free().
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* @in ctx Decode context
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* @return Positive if OK, negative if error, 0 if EOF
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*/
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int
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transcode_decode(struct decoded_frame **decoded, struct decode_ctx *ctx);
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/* Encodes and remuxes a frame. Also resamples if needed.
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*
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* @out evbuf An evbuffer filled with remuxed data
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* @in frame The frame to encode, e.g. from transcode_decode
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* @in wanted Bytes that the caller wants processed
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* @in ctx Encode context
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* @return Length of evbuf if OK, negative if error
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*/
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int
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transcode_encode(struct evbuffer *evbuf, struct decoded_frame *decoded, struct encode_ctx *ctx);
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/* Demuxes, decodes, encodes and remuxes the next packet from the input.
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*
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* @out evbuf An evbuffer filled with remuxed data
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* @in wanted Bytes that the caller wants processed
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* @in ctx Transcode context
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* @out icy_timer True if METADATA_ICY_INTERVAL has elapsed
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* @return Bytes processed if OK, negative if error, 0 if EOF
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*/
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int
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transcode(struct evbuffer *evbuf, int wanted, struct transcode_ctx *ctx, int *icy_timer);
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struct decoded_frame *
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transcode_raw2frame(uint8_t *data, size_t size);
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// Seeking
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int
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transcode_seek(struct transcode_ctx *ctx, int ms);
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// Metadata
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struct http_icy_metadata *
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transcode_metadata(struct transcode_ctx *ctx, int *changed);
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char *
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transcode_metadata_artwork_url(struct transcode_ctx *ctx);
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#endif /* !__TRANSCODE_H__ */
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