mirror of https://github.com/FFmpeg/FFmpeg.git
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>pull/37/merge
Lukasz Marek
11 years ago
committed by
Michael Niedermayer
parent
8c0f565ee3
commit
361b56c379
7 changed files with 211 additions and 2 deletions
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/*
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* Copyright (c) 2013 Lukasz Marek <lukasz.m.luki@gmail.com> |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include <pulse/simple.h> |
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#include <pulse/error.h> |
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#include "libavutil/opt.h" |
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#include "libavutil/time.h" |
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#include "libavutil/log.h" |
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#include "libavformat/avformat.h" |
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#include "libavformat/internal.h" |
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typedef struct PulseData { |
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AVClass *class; |
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const char *server; |
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const char *name; |
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const char *stream_name; |
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const char *device; |
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pa_simple *pa; |
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unsigned int stream_index; |
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} PulseData; |
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static pa_sample_format_t codec_id_to_pulse_format(enum AVCodecID codec_id) |
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{ |
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switch (codec_id) { |
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case AV_CODEC_ID_PCM_U8: return PA_SAMPLE_U8; |
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case AV_CODEC_ID_PCM_ALAW: return PA_SAMPLE_ALAW; |
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case AV_CODEC_ID_PCM_MULAW: return PA_SAMPLE_ULAW; |
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case AV_CODEC_ID_PCM_S16LE: return PA_SAMPLE_S16LE; |
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case AV_CODEC_ID_PCM_S16BE: return PA_SAMPLE_S16BE; |
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case AV_CODEC_ID_PCM_F32LE: return PA_SAMPLE_FLOAT32LE; |
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case AV_CODEC_ID_PCM_F32BE: return PA_SAMPLE_FLOAT32BE; |
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case AV_CODEC_ID_PCM_S32LE: return PA_SAMPLE_S32LE; |
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case AV_CODEC_ID_PCM_S32BE: return PA_SAMPLE_S32BE; |
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case AV_CODEC_ID_PCM_S24LE: return PA_SAMPLE_S24LE; |
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case AV_CODEC_ID_PCM_S24BE: return PA_SAMPLE_S24BE; |
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default: return PA_SAMPLE_INVALID; |
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} |
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} |
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static av_cold int pulse_write_header(AVFormatContext *h) |
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{ |
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PulseData *s = h->priv_data; |
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AVStream *st = NULL; |
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int ret; |
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pa_sample_spec ss; |
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pa_buffer_attr attr = { -1, -1, -1, -1, -1 }; |
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const char *stream_name = s->stream_name; |
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for (unsigned i = 0; i < h->nb_streams; i++) { |
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if (h->streams[i]->codec->codec_type == AVMEDIA_TYPE_AUDIO) { |
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st = h->streams[i]; |
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s->stream_index = i; |
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break; |
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} |
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} |
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if (!st) { |
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av_log(s, AV_LOG_ERROR, "No audio stream found.\n"); |
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return AVERROR(EINVAL); |
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} |
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if (!stream_name) |
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stream_name = h->filename; |
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ss.format = codec_id_to_pulse_format(st->codec->codec_id); |
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ss.rate = st->codec->sample_rate; |
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ss.channels = st->codec->channels; |
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s->pa = pa_simple_new(s->server, // Server
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s->name, // Application name
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PA_STREAM_PLAYBACK, |
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s->device, // Device
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stream_name, // Description of a stream
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&ss, // Sample format
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NULL, // Use default channel map
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&attr, // Buffering attributes
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&ret); // Result
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if (!s->pa) { |
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av_log(s, AV_LOG_ERROR, "pa_simple_new failed: %s\n", pa_strerror(ret)); |
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return AVERROR(EIO); |
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} |
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avpriv_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in us */ |
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return 0; |
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} |
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static av_cold int pulse_write_trailer(AVFormatContext *h) |
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{ |
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PulseData *s = h->priv_data; |
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pa_simple_flush(s->pa, NULL); |
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pa_simple_free(s->pa); |
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s->pa = NULL; |
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return 0; |
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} |
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static int pulse_write_packet(AVFormatContext *h, AVPacket *pkt) |
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{ |
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PulseData *s = h->priv_data; |
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int size = pkt->size; |
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uint8_t *buf = pkt->data; |
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int error; |
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if (s->stream_index != pkt->stream_index) |
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return 0; |
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if ((error = pa_simple_write(s->pa, buf, size, &error))) { |
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av_log(s, AV_LOG_ERROR, "pa_simple_write failed: %s\n", pa_strerror(error)); |
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return AVERROR(EIO); |
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} |
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return 0; |
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} |
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static void pulse_get_output_timestamp(AVFormatContext *h, int stream, int64_t *dts, int64_t *wall) |
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{ |
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PulseData *s = h->priv_data; |
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pa_usec_t latency = pa_simple_get_latency(s->pa, NULL); |
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*wall = av_gettime(); |
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*dts = h->streams[0]->cur_dts - latency; |
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} |
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#define OFFSET(a) offsetof(PulseData, a) |
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#define E AV_OPT_FLAG_ENCODING_PARAM |
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static const AVOption options[] = { |
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{ "server", "set PulseAudio server", OFFSET(server), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E }, |
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{ "name", "set application name", OFFSET(name), AV_OPT_TYPE_STRING, {.str = LIBAVFORMAT_IDENT}, 0, 0, E }, |
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{ "stream_name", "set stream description", OFFSET(stream_name), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E }, |
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{ "device", "set device name", OFFSET(device), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E }, |
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{ NULL } |
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}; |
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static const AVClass pulse_muxer_class = { |
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.class_name = "Pulse muxer", |
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.item_name = av_default_item_name, |
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.option = options, |
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.version = LIBAVUTIL_VERSION_INT, |
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}; |
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AVOutputFormat ff_pulse_muxer = { |
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.name = "pulse", |
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.long_name = NULL_IF_CONFIG_SMALL("Pulse audio output"), |
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.priv_data_size = sizeof(PulseData), |
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.audio_codec = AV_NE(AV_CODEC_ID_PCM_S16BE, AV_CODEC_ID_PCM_S16LE), |
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.video_codec = AV_CODEC_ID_NONE, |
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.write_header = pulse_write_header, |
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.write_packet = pulse_write_packet, |
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.write_trailer = pulse_write_trailer, |
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.get_output_timestamp = pulse_get_output_timestamp, |
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.flags = AVFMT_NOFILE, |
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.priv_class = &pulse_muxer_class, |
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}; |
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