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author | Lukasz Marek <lukasz.m.luki@gmail.com> | 2013-10-04 11:49:07 +0200 |
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committer | Michael Niedermayer <michaelni@gmx.at> | 2013-10-08 14:31:50 +0200 |
commit | 361b56c37962e0f57a67a505d8f0aa03ba4818c0 (patch) | |
tree | 8b844298e0e983cbab0bdcec3bc1f675ba014eb3 /libavdevice | |
parent | 8c0f565ee3ba48b6472cf69064961fd15de80753 (diff) | |
download | ffmpeg-streaming-361b56c37962e0f57a67a505d8f0aa03ba4818c0.zip ffmpeg-streaming-361b56c37962e0f57a67a505d8f0aa03ba4818c0.tar.gz |
lavd: pulse audio encoder
Signed-off-by: Lukasz Marek <lukasz.m.luki@gmail.com>
Reviewed-by: Stefano Sabatini <stefasab@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavdevice')
-rw-r--r-- | libavdevice/Makefile | 1 | ||||
-rw-r--r-- | libavdevice/alldevices.c | 2 | ||||
-rw-r--r-- | libavdevice/pulse_audio_enc.c | 171 | ||||
-rw-r--r-- | libavdevice/version.h | 2 |
4 files changed, 174 insertions, 2 deletions
diff --git a/libavdevice/Makefile b/libavdevice/Makefile index 424ce98..2fdc47b 100644 --- a/libavdevice/Makefile +++ b/libavdevice/Makefile @@ -31,6 +31,7 @@ OBJS-$(CONFIG_OPENAL_INDEV) += openal-dec.o OBJS-$(CONFIG_OSS_INDEV) += oss_audio.o OBJS-$(CONFIG_OSS_OUTDEV) += oss_audio.o OBJS-$(CONFIG_PULSE_INDEV) += pulse.o +OBJS-$(CONFIG_PULSE_OUTDEV) += pulse_audio_enc.o OBJS-$(CONFIG_SDL_OUTDEV) += sdl.o OBJS-$(CONFIG_SNDIO_INDEV) += sndio_common.o sndio_dec.o OBJS-$(CONFIG_SNDIO_OUTDEV) += sndio_common.o sndio_enc.o diff --git a/libavdevice/alldevices.c b/libavdevice/alldevices.c index fc8d3ce..33ce155 100644 --- a/libavdevice/alldevices.c +++ b/libavdevice/alldevices.c @@ -57,7 +57,7 @@ void avdevice_register_all(void) REGISTER_INDEV (LAVFI, lavfi); REGISTER_INDEV (OPENAL, openal); REGISTER_INOUTDEV(OSS, oss); - REGISTER_INDEV (PULSE, pulse); + REGISTER_INOUTDEV(PULSE, pulse); REGISTER_OUTDEV (SDL, sdl); REGISTER_INOUTDEV(SNDIO, sndio); REGISTER_INOUTDEV(V4L2, v4l2); diff --git a/libavdevice/pulse_audio_enc.c b/libavdevice/pulse_audio_enc.c new file mode 100644 index 0000000..154aa7d --- /dev/null +++ b/libavdevice/pulse_audio_enc.c @@ -0,0 +1,171 @@ +/* + * Copyright (c) 2013 Lukasz Marek <lukasz.m.luki@gmail.com> + * + * This file is part of FFmpeg. + * + * FFmpeg 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. + * + * FFmpeg 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 FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <pulse/simple.h> +#include <pulse/error.h> +#include "libavutil/opt.h" +#include "libavutil/time.h" +#include "libavutil/log.h" +#include "libavformat/avformat.h" +#include "libavformat/internal.h" + +typedef struct PulseData { + AVClass *class; + const char *server; + const char *name; + const char *stream_name; + const char *device; + pa_simple *pa; + unsigned int stream_index; +} PulseData; + +static pa_sample_format_t codec_id_to_pulse_format(enum AVCodecID 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_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 }; + const char *stream_name = s->stream_name; + + for (unsigned i = 0; i < h->nb_streams; i++) { + if (h->streams[i]->codec->codec_type == AVMEDIA_TYPE_AUDIO) { + st = h->streams[i]; + s->stream_index = i; + break; + } + } + + if (!st) { + av_log(s, AV_LOG_ERROR, "No audio stream found.\n"); + return AVERROR(EINVAL); + } + + if (!stream_name) + stream_name = h->filename; + + ss.format = codec_id_to_pulse_format(st->codec->codec_id); + ss.rate = st->codec->sample_rate; + ss.channels = st->codec->channels; + + 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 + NULL, // Use default channel map + &attr, // Buffering attributes + &ret); // Result + + if (!s->pa) { + av_log(s, AV_LOG_ERROR, "pa_simple_new failed: %s\n", pa_strerror(ret)); + return AVERROR(EIO); + } + + avpriv_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in us */ + + return 0; +} + +static av_cold int pulse_write_trailer(AVFormatContext *h) +{ + PulseData *s = h->priv_data; + pa_simple_flush(s->pa, NULL); + pa_simple_free(s->pa); + s->pa = NULL; + return 0; +} + +static int pulse_write_packet(AVFormatContext *h, AVPacket *pkt) +{ + PulseData *s = h->priv_data; + int size = pkt->size; + uint8_t *buf = pkt->data; + int error; + + if (s->stream_index != pkt->stream_index) + return 0; + + if ((error = pa_simple_write(s->pa, buf, size, &error))) { + av_log(s, AV_LOG_ERROR, "pa_simple_write failed: %s\n", pa_strerror(error)); + return AVERROR(EIO); + } + + return 0; +} + +static void pulse_get_output_timestamp(AVFormatContext *h, int stream, int64_t *dts, int64_t *wall) +{ + PulseData *s = h->priv_data; + pa_usec_t latency = pa_simple_get_latency(s->pa, NULL); + *wall = av_gettime(); + *dts = h->streams[0]->cur_dts - latency; +} + +#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 }, + { NULL } +}; + +static const AVClass pulse_muxer_class = { + .class_name = "Pulse muxer", + .item_name = av_default_item_name, + .option = options, + .version = LIBAVUTIL_VERSION_INT, +}; + +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_trailer = pulse_write_trailer, + .get_output_timestamp = pulse_get_output_timestamp, + .flags = AVFMT_NOFILE, + .priv_class = &pulse_muxer_class, +}; diff --git a/libavdevice/version.h b/libavdevice/version.h index 1e18f51..5823ab9 100644 --- a/libavdevice/version.h +++ b/libavdevice/version.h @@ -28,7 +28,7 @@ #include "libavutil/avutil.h" #define LIBAVDEVICE_VERSION_MAJOR 55 -#define LIBAVDEVICE_VERSION_MINOR 3 +#define LIBAVDEVICE_VERSION_MINOR 4 #define LIBAVDEVICE_VERSION_MICRO 100 #define LIBAVDEVICE_VERSION_INT AV_VERSION_INT(LIBAVDEVICE_VERSION_MAJOR, \ |