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lavd/pulse_audio_enc: cosmetics

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This commit is contained in:
Lukasz Marek 2014-04-18 01:10:20 +02:00
parent 176046d2b5
commit 10627e7e10
1 changed files with 35 additions and 32 deletions
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67
libavdevice/pulse_audio_enc.c
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@ -35,8 +35,8 @@ typedef struct PulseData {
const char *device;
pa_simple *pa;
int64_t timestamp;
int buffer_size;
int buffer_duration;
int buffer_size; /**< Buffer size in bytes */
int buffer_duration; /**< Buffer size in ms, recalculated to buffer_size */
} PulseData;
static av_cold int pulse_write_header(AVFormatContext *h)
@ -44,8 +44,8 @@ static av_cold int pulse_write_header(AVFormatContext *h)
PulseData *s = h->priv_data;
AVStream *st = NULL;
int ret;
pa_sample_spec ss;
pa_buffer_attr attr = { -1, -1, -1, -1, -1 };
pa_sample_spec sample_spec;
pa_buffer_attr buffer_attributes = { -1, -1, -1, -1, -1 };
const char *stream_name = s->stream_name;
if (h->nb_streams != 1 || h->streams[0]->codec->codec_type != AVMEDIA_TYPE_AUDIO) {
@ -66,26 +66,30 @@ static av_cold int pulse_write_header(AVFormatContext *h)
bytes *= st->codec->channels * st->codec->sample_rate *
av_get_bytes_per_sample(st->codec->sample_fmt);
bytes /= 1000;
attr.tlength = FFMAX(s->buffer_size, av_clip64(bytes, 0, UINT32_MAX - 1));
buffer_attributes.tlength = FFMAX(s->buffer_size, av_clip64(bytes, 0, UINT32_MAX - 1));
av_log(s, AV_LOG_DEBUG,
"Buffer duration: %ums recalculated into %"PRId64" bytes buffer.\n",
s->buffer_duration, bytes);
av_log(s, AV_LOG_DEBUG, "Real buffer length is %u bytes\n", attr.tlength);
av_log(s, AV_LOG_DEBUG, "Real buffer length is %u bytes\n", buffer_attributes.tlength);
} else if (s->buffer_size)
attr.tlength = s->buffer_size;
buffer_attributes.tlength = s->buffer_size;
ss.format = ff_codec_id_to_pulse_format(st->codec->codec_id);
ss.rate = st->codec->sample_rate;
ss.channels = st->codec->channels;
sample_spec.format = ff_codec_id_to_pulse_format(st->codec->codec_id);
sample_spec.rate = st->codec->sample_rate;
sample_spec.channels = st->codec->channels;
if (!pa_sample_spec_valid(&sample_spec)) {
av_log(s, AV_LOG_ERROR, "Invalid sample spec.\n");
return AVERROR(EINVAL);
}
s->pa = pa_simple_new(s->server, // Server
s->name, // Application name
PA_STREAM_PLAYBACK,
s->device, // Device
stream_name, // Description of a stream
&ss, // Sample format
&sample_spec, // Sample format
NULL, // Use default channel map
&attr, // Buffering attributes
&buffer_attributes, // Buffering attributes
&ret); // Result
if (!s->pa) {
@ -175,19 +179,18 @@ static int pulse_get_device_list(AVFormatContext *h, AVDeviceInfoList *device_li
#define OFFSET(a) offsetof(PulseData, a)
#define E AV_OPT_FLAG_ENCODING_PARAM
static const AVOption options[] = {
{ "server", "set PulseAudio server", OFFSET(server), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E },
{ "name", "set application name", OFFSET(name), AV_OPT_TYPE_STRING, {.str = LIBAVFORMAT_IDENT}, 0, 0, E },
{ "stream_name", "set stream description", OFFSET(stream_name), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E },
{ "device", "set device name", OFFSET(device), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E },
{ "buffer_size", "set buffer size in bytes", OFFSET(buffer_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E },
{ "buffer_duration", "set buffer duration in millisecs", OFFSET(buffer_duration), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E },
{ "server", "set PulseAudio server", OFFSET(server), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E },
{ "name", "set application name", OFFSET(name), AV_OPT_TYPE_STRING, {.str = LIBAVFORMAT_IDENT}, 0, 0, E },
{ "stream_name", "set stream description", OFFSET(stream_name), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E },
{ "device", "set device name", OFFSET(device), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E },
{ "buffer_size", "set buffer size in bytes", OFFSET(buffer_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E },
{ "buffer_duration", "set buffer duration in millisecs", OFFSET(buffer_duration), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E },
{ NULL }
};
static const AVClass pulse_muxer_class = {
.class_name = "Pulse muxer",
.class_name = "PulseAudio muxer",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
@ -195,17 +198,17 @@ static const AVClass pulse_muxer_class = {
};
AVOutputFormat ff_pulse_muxer = {
.name = "pulse",
.long_name = NULL_IF_CONFIG_SMALL("Pulse audio output"),
.priv_data_size = sizeof(PulseData),
.audio_codec = AV_NE(AV_CODEC_ID_PCM_S16BE, AV_CODEC_ID_PCM_S16LE),
.video_codec = AV_CODEC_ID_NONE,
.write_header = pulse_write_header,
.write_packet = pulse_write_packet,
.write_uncoded_frame = pulse_write_frame,
.write_trailer = pulse_write_trailer,
.name = "pulse",
.long_name = NULL_IF_CONFIG_SMALL("Pulse audio output"),
.priv_data_size = sizeof(PulseData),
.audio_codec = AV_NE(AV_CODEC_ID_PCM_S16BE, AV_CODEC_ID_PCM_S16LE),
.video_codec = AV_CODEC_ID_NONE,
.write_header = pulse_write_header,
.write_packet = pulse_write_packet,
.write_uncoded_frame = pulse_write_frame,
.write_trailer = pulse_write_trailer,
.get_output_timestamp = pulse_get_output_timestamp,
.get_device_list = pulse_get_device_list,
.flags = AVFMT_NOFILE | AVFMT_ALLOW_FLUSH,
.priv_class = &pulse_muxer_class,
.get_device_list = pulse_get_device_list,
.flags = AVFMT_NOFILE | AVFMT_ALLOW_FLUSH,
.priv_class = &pulse_muxer_class,
};