From d2e7467eb203d3a34bc1111564c7058b5e9c6b12 Mon Sep 17 00:00:00 2001 From: wm4 Date: Sun, 10 Nov 2013 23:11:40 +0100 Subject: audio/filter: prepare filter chain for non-interleaved audio Based on earlier work by Stefano Pigozzi. There are 2 changes: 1. Instead of mp_audio.audio, mp_audio.planes[0] must be used. 2. mp_audio.len used to contain the size of the audio in bytes. Now mp_audio.samples must be used. (Where 1 sample is the smallest unit of audio that covers all channels.) Also, some filters need changes to reject non-interleaved formats properly. Nothing uses the non-interleaved features yet, but this is needed so that things don't just break when doing so. --- audio/audio.h | 31 ++++++++++++++++++++++++++----- 1 file changed, 26 insertions(+), 5 deletions(-) (limited to 'audio/audio.h') diff --git a/audio/audio.h b/audio/audio.h index de35e697c8..b5cae0c83c 100644 --- a/audio/audio.h +++ b/audio/audio.h @@ -23,14 +23,19 @@ // Audio data chunk struct mp_audio { - void *audio; // data buffer - int len; // buffer length (in bytes) - int rate; // sample rate + int samples; // number of samples in data (per channel) + void *planes[MP_NUM_CHANNELS]; // data buffer (one per plane) + int rate; // sample rate struct mp_chmap channels; // channel layout, use mp_audio_set_*() to set int format; // format (AF_FORMAT_...), use mp_audio_set_format() to set // Redundant fields, for convenience - int nch; // number of channels (redundant with chmap) - int bps; // bytes per sample (redundant with format) + int sstride; // distance between 2 samples in bytes on a plane + // interleaved: bps * nch + // planar: bps + int nch; // number of channels (redundant with chmap) + int spf; // sub-samples per sample on each plane + int num_planes; // number of planes + int bps; // size of sub-samples (af_fmt2bits(format) / 8) }; void mp_audio_set_format(struct mp_audio *mpa, int format); @@ -43,4 +48,20 @@ bool mp_audio_config_equals(const struct mp_audio *a, const struct mp_audio *b); char *mp_audio_fmt_to_str(int srate, const struct mp_chmap *chmap, int format); char *mp_audio_config_to_str(struct mp_audio *mpa); +void mp_audio_force_interleaved_format(struct mp_audio *mpa); + +int mp_audio_psize(struct mp_audio *mpa); + +void mp_audio_set_null_data(struct mp_audio *mpa); + +void mp_audio_realloc(struct mp_audio *mpa, int samples); +void mp_audio_realloc_min(struct mp_audio *mpa, int samples); +int mp_audio_get_allocated_size(struct mp_audio *mpa); + +void mp_audio_fill_silence(struct mp_audio *mpa, int start, int length); + +void mp_audio_copy(struct mp_audio *dst, int dst_offset, + struct mp_audio *src, int src_offset, int length); +void mp_audio_skip_samples(struct mp_audio *data, int samples); + #endif -- cgit v1.2.3