diff options
Diffstat (limited to 'libavdevice/pulse.c')
| -rw-r--r-- | libavdevice/pulse.c | 190 |
1 files changed, 0 insertions, 190 deletions
diff --git a/libavdevice/pulse.c b/libavdevice/pulse.c deleted file mode 100644 index a8e710d279..0000000000 --- a/libavdevice/pulse.c +++ /dev/null @@ -1,190 +0,0 @@ -/* - * Pulseaudio input - * Copyright (c) 2011 Luca Barbato <lu_zero@gentoo.org> - * - * This file is part of Libav. - * - * Libav 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 2.1 of the License, or (at your option) any later version. - * - * Libav 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 - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with Libav; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -/** - * @file - * PulseAudio input using the simple API. - * @author Luca Barbato <lu_zero@gentoo.org> - */ - -#include <pulse/simple.h> -#include <pulse/rtclock.h> -#include <pulse/error.h> - -#include "libavformat/avformat.h" -#include "libavformat/internal.h" -#include "libavutil/opt.h" - -#define DEFAULT_CODEC_ID AV_NE(AV_CODEC_ID_PCM_S16BE, AV_CODEC_ID_PCM_S16LE) - -typedef struct PulseData { - AVClass *class; - char *server; - char *name; - char *stream_name; - int sample_rate; - int channels; - int frame_size; - int fragment_size; - pa_simple *s; - int64_t pts; - int64_t frame_duration; -} PulseData; - -static pa_sample_format_t codec_id_to_pulse_format(int codec_id) { - switch (codec_id) { - case AV_CODEC_ID_PCM_U8: return PA_SAMPLE_U8; - case AV_CODEC_ID_PCM_ALAW: return PA_SAMPLE_ALAW; - case AV_CODEC_ID_PCM_MULAW: return PA_SAMPLE_ULAW; - case AV_CODEC_ID_PCM_S16LE: return PA_SAMPLE_S16LE; - case AV_CODEC_ID_PCM_S16BE: return PA_SAMPLE_S16BE; - case AV_CODEC_ID_PCM_F32LE: return PA_SAMPLE_FLOAT32LE; - case AV_CODEC_ID_PCM_F32BE: return PA_SAMPLE_FLOAT32BE; - case AV_CODEC_ID_PCM_S32LE: return PA_SAMPLE_S32LE; - case AV_CODEC_ID_PCM_S32BE: return PA_SAMPLE_S32BE; - case AV_CODEC_ID_PCM_S24LE: return PA_SAMPLE_S24LE; - case AV_CODEC_ID_PCM_S24BE: return PA_SAMPLE_S24BE; - default: return PA_SAMPLE_INVALID; - } -} - -static av_cold int pulse_read_header(AVFormatContext *s) -{ - PulseData *pd = s->priv_data; - AVStream *st; - char *device = NULL; - int ret; - enum AVCodecID codec_id = - s->audio_codec_id == AV_CODEC_ID_NONE ? DEFAULT_CODEC_ID : s->audio_codec_id; - const pa_sample_spec ss = { codec_id_to_pulse_format(codec_id), - pd->sample_rate, - pd->channels }; - - pa_buffer_attr attr = { -1 }; - - st = avformat_new_stream(s, NULL); - - if (!st) { - av_log(s, AV_LOG_ERROR, "Cannot add stream\n"); - return AVERROR(ENOMEM); - } - - attr.fragsize = pd->fragment_size; - - if (strcmp(s->filename, "default")) - device = s->filename; - - pd->s = pa_simple_new(pd->server, pd->name, - PA_STREAM_RECORD, - device, pd->stream_name, &ss, - NULL, &attr, &ret); - - if (!pd->s) { - av_log(s, AV_LOG_ERROR, "pa_simple_new failed: %s\n", - pa_strerror(ret)); - return AVERROR(EIO); - } - /* take real parameters */ - st->codec->codec_type = AVMEDIA_TYPE_AUDIO; - st->codec->codec_id = codec_id; - st->codec->sample_rate = pd->sample_rate; - st->codec->channels = pd->channels; - avpriv_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in us */ - - pd->pts = AV_NOPTS_VALUE; - pd->frame_duration = (pd->frame_size * 1000000LL * 8) / - (pd->sample_rate * pd->channels * av_get_bits_per_sample(codec_id)); - - return 0; -} - -static int pulse_read_packet(AVFormatContext *s, AVPacket *pkt) -{ - PulseData *pd = s->priv_data; - int res; - pa_usec_t latency; - - if (av_new_packet(pkt, pd->frame_size) < 0) { - return AVERROR(ENOMEM); - } - - if ((pa_simple_read(pd->s, pkt->data, pkt->size, &res)) < 0) { - av_log(s, AV_LOG_ERROR, "pa_simple_read failed: %s\n", - pa_strerror(res)); - av_free_packet(pkt); - return AVERROR(EIO); - } - - if ((latency = pa_simple_get_latency(pd->s, &res)) == (pa_usec_t) -1) { - av_log(s, AV_LOG_ERROR, "pa_simple_get_latency() failed: %s\n", - pa_strerror(res)); - return AVERROR(EIO); - } - - if (pd->pts == AV_NOPTS_VALUE) { - pd->pts = -latency; - } - - pkt->pts = pd->pts; - - pd->pts += pd->frame_duration; - - return 0; -} - -static av_cold int pulse_close(AVFormatContext *s) -{ - PulseData *pd = s->priv_data; - pa_simple_free(pd->s); - return 0; -} - -#define OFFSET(a) offsetof(PulseData, a) -#define D AV_OPT_FLAG_DECODING_PARAM - -static const AVOption options[] = { - { "server", "pulse server name", OFFSET(server), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, D }, - { "name", "application name", OFFSET(name), AV_OPT_TYPE_STRING, {.str = "libav"}, 0, 0, D }, - { "stream_name", "stream description", OFFSET(stream_name), AV_OPT_TYPE_STRING, {.str = "record"}, 0, 0, D }, - { "sample_rate", "sample rate in Hz", OFFSET(sample_rate), AV_OPT_TYPE_INT, {.i64 = 48000}, 1, INT_MAX, D }, - { "channels", "number of audio channels", OFFSET(channels), AV_OPT_TYPE_INT, {.i64 = 2}, 1, INT_MAX, D }, - { "frame_size", "number of bytes per frame", OFFSET(frame_size), AV_OPT_TYPE_INT, {.i64 = 1024}, 1, INT_MAX, D }, - { "fragment_size", "buffering size, affects latency and cpu usage", OFFSET(fragment_size), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, D }, - { NULL }, -}; - -static const AVClass pulse_demuxer_class = { - .class_name = "Pulse demuxer", - .item_name = av_default_item_name, - .option = options, - .version = LIBAVUTIL_VERSION_INT, -}; - -AVInputFormat ff_pulse_demuxer = { - .name = "pulse", - .long_name = NULL_IF_CONFIG_SMALL("Pulse audio input"), - .priv_data_size = sizeof(PulseData), - .read_header = pulse_read_header, - .read_packet = pulse_read_packet, - .read_close = pulse_close, - .flags = AVFMT_NOFILE, - .priv_class = &pulse_demuxer_class, -}; |