audio: add mp_audio_buffer

Implementation wise, this could be much improved, such as using a
ringbuffer that doesn't require copying data all the time. This is
why we don't use mp_audio directly instead of mp_audio_buffer.

1 files changed, 44 insertions, 0 deletions

diff --git a/audio/audio_buffer.h b/audio/audio_buffer.h
new file mode 100644
index 0000000000..8cd0df30d0
--- /dev/null
+++ b/audio/audio_buffer.h
@@ -0,0 +1,44 @@
+/*
+ * This file is part of mpv.
+ *
+ * mpv is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * mpv is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with mpv.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef MP_AUDIO_BUFFER_H
+#define MP_AUDIO_BUFFER_H
+
+struct mp_audio_buffer;
+struct mp_audio;
+struct mp_chmap;
+
+struct mp_audio_buffer *mp_audio_buffer_create(void *talloc_ctx);
+void mp_audio_buffer_reinit(struct mp_audio_buffer *ab, struct mp_audio *fmt);
+void mp_audio_buffer_reinit_fmt(struct mp_audio_buffer *ab, int format,
+                                const struct mp_chmap *channels, int srate);
+void mp_audio_buffer_get_format(struct mp_audio_buffer *ab,
+                                struct mp_audio *out_fmt);
+void mp_audio_buffer_preallocate_min(struct mp_audio_buffer *ab, int samples);
+int mp_audio_buffer_get_write_available(struct mp_audio_buffer *ab);
+void mp_audio_buffer_get_write_buffer(struct mp_audio_buffer *ab, int minsamples,
+                                      struct mp_audio *out_buffer);
+void mp_audio_buffer_finish_write(struct mp_audio_buffer *ab, int samples);
+void mp_audio_buffer_append(struct mp_audio_buffer *ab, struct mp_audio *mpa);
+void mp_audio_buffer_prepend_silence(struct mp_audio_buffer *ab, int samples);
+void mp_audio_buffer_peek(struct mp_audio_buffer *ab, struct mp_audio *out_mpa);
+void mp_audio_buffer_skip(struct mp_audio_buffer *ab, int samples);
+void mp_audio_buffer_clear(struct mp_audio_buffer *ab);
+int mp_audio_buffer_samples(struct mp_audio_buffer *ab);
+double mp_audio_buffer_seconds(struct mp_audio_buffer *ab);
+
+#endif