core: add missing SET_PORT_LATENCY_OFFSET to dispatcher opcode string table

[pulseaudio] / src / pulsecore / resampler.h

diff --git a/src/pulsecore/resampler.h b/src/pulsecore/resampler.h
index 23e1acb7659a877ab9b40002601ad8507eb5d3e7..058a8002b19d304b91d60ac7d099583d0871b954 100644 (file)
--- a/src/pulsecore/resampler.h
+++ b/src/pulsecore/resampler.h
@@ -1,8 +1,6 @@
 #ifndef fooresamplerhfoo
 #define fooresamplerhfoo
 
-/* $Id$ */
-
 /***
   This file is part of PulseAudio.
 
@@ -10,7 +8,7 @@
 
   PulseAudio is free software; you can redistribute it and/or modify
   it under the terms of the GNU Lesser General Public License as published
-  by the Free Software Foundation; either version 2 of the License,
+  by the Free Software Foundation; either version 2.1 of the License,
   or (at your option) any later version.
 
   PulseAudio is distributed in the hope that it will be useful, but
@@ -30,6 +28,18 @@
 #include <pulsecore/memchunk.h>
 
 typedef struct pa_resampler pa_resampler;
+typedef struct pa_resampler_impl pa_resampler_impl;
+
+struct pa_resampler_impl {
+    void (*free)(pa_resampler *r);
+    void (*update_rates)(pa_resampler *r);
+
+    /* Returns the number of leftover frames in the input buffer. */
+    unsigned (*resample)(pa_resampler *r, const pa_memchunk *in, unsigned in_n_frames, pa_memchunk *out, unsigned *out_n_frames);
+
+    void (*reset)(pa_resampler *r);
+    void *data;
+};
 
 typedef enum pa_resample_method {
     PA_RESAMPLER_INVALID                 = -1,
@@ -46,9 +56,17 @@ typedef enum pa_resample_method {
     PA_RESAMPLER_FFMPEG,
     PA_RESAMPLER_AUTO, /* automatic select based on sample format */
     PA_RESAMPLER_COPY,
+    PA_RESAMPLER_PEAKS,
     PA_RESAMPLER_MAX
 } pa_resample_method_t;
 
+typedef enum pa_resample_flags {
+    PA_RESAMPLER_VARIABLE_RATE = 0x0001U,
+    PA_RESAMPLER_NO_REMAP      = 0x0002U,  /* implies NO_REMIX */
+    PA_RESAMPLER_NO_REMIX      = 0x0004U,
+    PA_RESAMPLER_NO_LFE        = 0x0008U
+} pa_resample_flags_t;
+
 pa_resampler* pa_resampler_new(
         pa_mempool *pool,
         const pa_sample_spec *a,
@@ -56,13 +74,16 @@ pa_resampler* pa_resampler_new(
         const pa_sample_spec *b,
         const pa_channel_map *bm,
         pa_resample_method_t resample_method,
-        int variable_rate);
+        pa_resample_flags_t flags);
 
 void pa_resampler_free(pa_resampler *r);
 
 /* Returns the size of an input memory block which is required to return the specified amount of output data */
 size_t pa_resampler_request(pa_resampler *r, size_t out_length);
 
+/* Inverse of pa_resampler_request() */
+size_t pa_resampler_result(pa_resampler *r, size_t in_length);
+
 /* Returns the maximum size of input blocks we can process without needing bounce buffers larger than the mempool tile size. */
 size_t pa_resampler_max_block_size(pa_resampler *r);
 
@@ -75,6 +96,9 @@ void pa_resampler_set_input_rate(pa_resampler *r, uint32_t rate);
 /* Change the output rate of the resampler object */
 void pa_resampler_set_output_rate(pa_resampler *r, uint32_t rate);
 
+/* Reinitialize state of the resampler, possibly due to seeking or other discontinuities */
+void pa_resampler_reset(pa_resampler *r);
+
 /* Return the resampling method of the resampler object */
 pa_resample_method_t pa_resampler_get_method(pa_resampler *r);
 
@@ -87,4 +111,9 @@ const char *pa_resample_method_to_string(pa_resample_method_t m);
 /* Return 1 when the specified resampling method is supported */
 int pa_resample_method_supported(pa_resample_method_t m);
 
+const pa_channel_map* pa_resampler_input_channel_map(pa_resampler *r);
+const pa_sample_spec* pa_resampler_input_sample_spec(pa_resampler *r);
+const pa_channel_map* pa_resampler_output_channel_map(pa_resampler *r);
+const pa_sample_spec* pa_resampler_output_sample_spec(pa_resampler *r);
+
 #endif