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format: Expose pa_format_info<->pa_sample_spec conversion functions

Browse source 
These utility functions could be handy to clients.
pa_format_info_to_sample_spec_fake() isn't made public, but the return
value is changed to keep in sync with pa_format_info_to_sample_spec().
This commit is contained in:
Arun Raghavan 2012-02-06 11:34:47 +05:30
parent 63429b67c7
commit c60f698f1e
5 changed files with 19 additions and 14 deletions
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14
src/pulse/format.c
View file

@ -219,10 +219,10 @@ pa_format_info* pa_format_info_from_sample_spec(pa_sample_spec *ss, pa_channel_m
}
/* For PCM streams */
pa_bool_t pa_format_info_to_sample_spec(pa_format_info *f, pa_sample_spec *ss, pa_channel_map *map) {
int pa_format_info_to_sample_spec(pa_format_info *f, pa_sample_spec *ss, pa_channel_map *map) {
char *sf = NULL, *m = NULL;
int rate, channels;
pa_bool_t ret = FALSE;
int ret = -PA_ERR_INVALID;
pa_assert(f);
pa_assert(ss);
@ -249,7 +249,7 @@ pa_bool_t pa_format_info_to_sample_spec(pa_format_info *f, pa_sample_spec *ss, p
goto out;
}
ret = TRUE;
ret = 0;
out:
if (sf)
@ -261,23 +261,23 @@ out:
}
/* For compressed streams */
pa_bool_t pa_format_info_to_sample_spec_fake(pa_format_info *f, pa_sample_spec *ss) {
int pa_format_info_to_sample_spec_fake(pa_format_info *f, pa_sample_spec *ss) {
int rate;
pa_assert(f);
pa_assert(ss);
pa_return_val_if_fail(f->encoding != PA_ENCODING_PCM, FALSE);
pa_return_val_if_fail(f->encoding != PA_ENCODING_PCM, -PA_ERR_INVALID);
ss->format = PA_SAMPLE_S16LE;
ss->channels = 2;
pa_return_val_if_fail(pa_format_info_get_prop_int(f, PA_PROP_FORMAT_RATE, &rate) == 0, FALSE);
pa_return_val_if_fail(pa_format_info_get_prop_int(f, PA_PROP_FORMAT_RATE, &rate) == 0, -PA_ERR_INVALID);
ss->rate = (uint32_t) rate;
if (f->encoding == PA_ENCODING_EAC3_IEC61937)
ss->rate *= 4;
return TRUE;
return 0;
}
void pa_format_info_set_sample_format(pa_format_info *f, pa_sample_format_t sf) {

7
src/pulse/format.h
View file

@ -115,6 +115,13 @@ char *pa_format_info_snprint(char *s, size_t l, const pa_format_info *f);
* \a pa_format_info_snprint() into a pa_format_info structure. \since 1.0 */
pa_format_info* pa_format_info_from_string(const char *str);
/** Utility function to take a \a pa_sample_spec and generate the corresponding \a pa_format_info. \since 2.0 */
pa_format_info* pa_format_info_from_sample_spec(pa_sample_spec *ss, pa_channel_map *map);
/** Utility function to generate a \a pa_sample_spec and \a pa_channel_map corresponding to a given \a pa_format_info. Returns
* a negative integer if conversion failed and 0 on success. \since 2.0 */
int pa_format_info_to_sample_spec(pa_format_info *f, pa_sample_spec *ss, pa_channel_map *map);
/** Gets an integer property from the given format info. Returns 0 on success and a negative integer on failure. \since 2.0 */
int pa_format_info_get_prop_int(pa_format_info *f, const char *key, int *v);
/** Gets a string property from the given format info. The caller must free the returned string using \ref pa_xfree. Returns

4
src/pulse/internal.h
View file

@ -304,9 +304,7 @@ void pa_ext_device_restore_command(pa_context *c, uint32_t tag, pa_tagstruct *t)
void pa_ext_stream_restore_command(pa_context *c, uint32_t tag, pa_tagstruct *t);
void pa_format_info_free2(pa_format_info *f, void *userdata);
pa_format_info* pa_format_info_from_sample_spec(pa_sample_spec *ss, pa_channel_map *map);
pa_bool_t pa_format_info_to_sample_spec(pa_format_info *f, pa_sample_spec *ss, pa_channel_map *map);
pa_bool_t pa_format_info_to_sample_spec_fake(pa_format_info *f, pa_sample_spec *ss);
int pa_format_info_to_sample_spec_fake(pa_format_info *f, pa_sample_spec *ss);
pa_bool_t pa_mainloop_is_our_api(pa_mainloop_api*m);

4
src/pulsecore/sink-input.c
View file

@ -293,12 +293,12 @@ int pa_sink_input_new(
/* Now populate the sample spec and format according to the final
* format that we've negotiated */
if (PA_LIKELY(data->format->encoding == PA_ENCODING_PCM)) {
pa_return_val_if_fail(pa_format_info_to_sample_spec(data->format, &ss, &map), -PA_ERR_INVALID);
pa_return_val_if_fail(pa_format_info_to_sample_spec(data->format, &ss, &map) == 0, -PA_ERR_INVALID);
pa_sink_input_new_data_set_sample_spec(data, &ss);
if (pa_channel_map_valid(&map))
pa_sink_input_new_data_set_channel_map(data, &map);
} else {
pa_return_val_if_fail(pa_format_info_to_sample_spec_fake(data->format, &ss), -PA_ERR_INVALID);
pa_return_val_if_fail(pa_format_info_to_sample_spec_fake(data->format, &ss) == 0, -PA_ERR_INVALID);
pa_sink_input_new_data_set_sample_spec(data, &ss);
}

4
src/pulsecore/source-output.c
View file

@ -273,12 +273,12 @@ int pa_source_output_new(
/* Now populate the sample spec and format according to the final
* format that we've negotiated */
if (PA_LIKELY(data->format->encoding == PA_ENCODING_PCM)) {
pa_return_val_if_fail(pa_format_info_to_sample_spec(data->format, &ss, &map), -PA_ERR_INVALID);
pa_return_val_if_fail(pa_format_info_to_sample_spec(data->format, &ss, &map) == 0, -PA_ERR_INVALID);
pa_source_output_new_data_set_sample_spec(data, &ss);
if (pa_channel_map_valid(&map))
pa_source_output_new_data_set_channel_map(data, &map);
} else {
pa_return_val_if_fail(pa_format_info_to_sample_spec_fake(data->format, &ss), -PA_ERR_INVALID);
pa_return_val_if_fail(pa_format_info_to_sample_spec_fake(data->format, &ss) == 0, -PA_ERR_INVALID);
pa_source_output_new_data_set_sample_spec(data, &ss);
}