diff options
author | Diego Biurrun <diego@biurrun.de> | 2017-09-27 15:18:58 +0200 |
---|---|---|
committer | Diego Biurrun <diego@biurrun.de> | 2017-10-13 23:57:59 +0200 |
commit | 6ce13070bddeb78fb2974ed94d28ef9424631817 (patch) | |
tree | 95429bc4c3827ff1ab27b69f3f2ce7cc61f2b2ca /libavdevice | |
parent | 8d3db95f201fba2e22611f9a5f8eced76f8e89ed (diff) | |
download | ffmpeg-6ce13070bddeb78fb2974ed94d28ef9424631817.tar.gz |
oss: Coalesce source files after outdev removal
Diffstat (limited to 'libavdevice')
-rw-r--r-- | libavdevice/Makefile | 2 | ||||
-rw-r--r-- | libavdevice/oss.c | 122 | ||||
-rw-r--r-- | libavdevice/oss.h | 45 | ||||
-rw-r--r-- | libavdevice/oss_dec.c | 146 |
4 files changed, 117 insertions, 198 deletions
diff --git a/libavdevice/Makefile b/libavdevice/Makefile index 18228f590f..c7c5a319ee 100644 --- a/libavdevice/Makefile +++ b/libavdevice/Makefile @@ -16,7 +16,7 @@ OBJS-$(CONFIG_BKTR_INDEV) += bktr.o OBJS-$(CONFIG_DV1394_INDEV) += dv1394.o OBJS-$(CONFIG_FBDEV_INDEV) += fbdev.o OBJS-$(CONFIG_JACK_INDEV) += jack.o timefilter.o -OBJS-$(CONFIG_OSS_INDEV) += oss_dec.o oss.o +OBJS-$(CONFIG_OSS_INDEV) += oss.o OBJS-$(CONFIG_PULSE_INDEV) += pulse.o OBJS-$(CONFIG_SNDIO_INDEV) += sndio.o OBJS-$(CONFIG_V4L2_INDEV) += v4l2.o diff --git a/libavdevice/oss.c b/libavdevice/oss.c index e504438124..e2f0e87eac 100644 --- a/libavdevice/oss.c +++ b/libavdevice/oss.c @@ -28,15 +28,30 @@ #include <sys/soundcard.h> #include "libavutil/log.h" +#include "libavutil/opt.h" +#include "libavutil/time.h" #include "libavcodec/avcodec.h" #include "libavformat/avformat.h" - -#include "oss.h" - -int ff_oss_audio_open(AVFormatContext *s1, int is_output, - const char *audio_device) +#include "libavformat/internal.h" + +#define OSS_AUDIO_BLOCK_SIZE 4096 + +typedef struct OSSAudioData { + AVClass *class; + int fd; + int sample_rate; + int channels; + int frame_size; /* in bytes ! */ + enum AVCodecID codec_id; + unsigned int flip_left : 1; + uint8_t buffer[OSS_AUDIO_BLOCK_SIZE]; + int buffer_ptr; +} OSSAudioData; + +static int oss_audio_open(AVFormatContext *s1, int is_output, + const char *audio_device) { OSSAudioData *s = s1->priv_data; int audio_fd; @@ -126,8 +141,103 @@ int ff_oss_audio_open(AVFormatContext *s1, int is_output, #undef CHECK_IOCTL_ERROR } -int ff_oss_audio_close(OSSAudioData *s) +static int audio_read_header(AVFormatContext *s1) { + OSSAudioData *s = s1->priv_data; + AVStream *st; + int ret; + + st = avformat_new_stream(s1, NULL); + if (!st) { + return AVERROR(ENOMEM); + } + + ret = oss_audio_open(s1, 0, s1->filename); + if (ret < 0) { + return AVERROR(EIO); + } + + /* take real parameters */ + st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO; + st->codecpar->codec_id = s->codec_id; + st->codecpar->sample_rate = s->sample_rate; + st->codecpar->channels = s->channels; + + avpriv_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in us */ + return 0; +} + +static int audio_read_packet(AVFormatContext *s1, AVPacket *pkt) +{ + OSSAudioData *s = s1->priv_data; + int ret, bdelay; + int64_t cur_time; + struct audio_buf_info abufi; + + if ((ret=av_new_packet(pkt, s->frame_size)) < 0) + return ret; + + ret = read(s->fd, pkt->data, pkt->size); + if (ret <= 0){ + av_packet_unref(pkt); + pkt->size = 0; + if (ret<0) return AVERROR(errno); + else return AVERROR_EOF; + } + pkt->size = ret; + + /* compute pts of the start of the packet */ + cur_time = av_gettime(); + bdelay = ret; + if (ioctl(s->fd, SNDCTL_DSP_GETISPACE, &abufi) == 0) { + bdelay += abufi.bytes; + } + /* subtract time represented by the number of bytes in the audio fifo */ + cur_time -= (bdelay * 1000000LL) / (s->sample_rate * s->channels); + + /* convert to wanted units */ + pkt->pts = cur_time; + + if (s->flip_left && s->channels == 2) { + int i; + short *p = (short *) pkt->data; + + for (i = 0; i < ret; i += 4) { + *p = ~*p; + p += 2; + } + } + return 0; +} + +static int audio_read_close(AVFormatContext *s1) +{ + OSSAudioData *s = s1->priv_data; + close(s->fd); return 0; } + +static const AVOption options[] = { + { "sample_rate", "", offsetof(OSSAudioData, sample_rate), AV_OPT_TYPE_INT, {.i64 = 48000}, 1, INT_MAX, AV_OPT_FLAG_DECODING_PARAM }, + { "channels", "", offsetof(OSSAudioData, channels), AV_OPT_TYPE_INT, {.i64 = 2}, 1, INT_MAX, AV_OPT_FLAG_DECODING_PARAM }, + { NULL }, +}; + +static const AVClass oss_demuxer_class = { + .class_name = "OSS demuxer", + .item_name = av_default_item_name, + .option = options, + .version = LIBAVUTIL_VERSION_INT, +}; + +AVInputFormat ff_oss_demuxer = { + .name = "oss", + .long_name = NULL_IF_CONFIG_SMALL("OSS (Open Sound System) capture"), + .priv_data_size = sizeof(OSSAudioData), + .read_header = audio_read_header, + .read_packet = audio_read_packet, + .read_close = audio_read_close, + .flags = AVFMT_NOFILE, + .priv_class = &oss_demuxer_class, +}; diff --git a/libavdevice/oss.h b/libavdevice/oss.h deleted file mode 100644 index 0fbe14b3ec..0000000000 --- a/libavdevice/oss.h +++ /dev/null @@ -1,45 +0,0 @@ -/* - * 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 - */ - -#ifndef AVDEVICE_OSS_H -#define AVDEVICE_OSS_H - -#include "libavcodec/avcodec.h" - -#include "libavformat/avformat.h" - -#define OSS_AUDIO_BLOCK_SIZE 4096 - -typedef struct OSSAudioData { - AVClass *class; - int fd; - int sample_rate; - int channels; - int frame_size; /* in bytes ! */ - enum AVCodecID codec_id; - unsigned int flip_left : 1; - uint8_t buffer[OSS_AUDIO_BLOCK_SIZE]; - int buffer_ptr; -} OSSAudioData; - -int ff_oss_audio_open(AVFormatContext *s1, int is_output, - const char *audio_device); - -int ff_oss_audio_close(OSSAudioData *s); - -#endif /* AVDEVICE_OSS_H */ diff --git a/libavdevice/oss_dec.c b/libavdevice/oss_dec.c deleted file mode 100644 index 6f51a30662..0000000000 --- a/libavdevice/oss_dec.c +++ /dev/null @@ -1,146 +0,0 @@ -/* - * Linux audio play interface - * Copyright (c) 2000, 2001 Fabrice Bellard - * - * 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 - */ - -#include "config.h" - -#include <stdint.h> - -#if HAVE_SOUNDCARD_H -#include <soundcard.h> -#else -#include <sys/soundcard.h> -#endif - -#include <unistd.h> -#include <fcntl.h> -#include <sys/ioctl.h> - -#include "libavutil/internal.h" -#include "libavutil/opt.h" -#include "libavutil/time.h" - -#include "libavcodec/avcodec.h" - -#include "libavformat/avformat.h" -#include "libavformat/internal.h" - -#include "oss.h" - -static int audio_read_header(AVFormatContext *s1) -{ - OSSAudioData *s = s1->priv_data; - AVStream *st; - int ret; - - st = avformat_new_stream(s1, NULL); - if (!st) { - return AVERROR(ENOMEM); - } - - ret = ff_oss_audio_open(s1, 0, s1->filename); - if (ret < 0) { - return AVERROR(EIO); - } - - /* take real parameters */ - st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO; - st->codecpar->codec_id = s->codec_id; - st->codecpar->sample_rate = s->sample_rate; - st->codecpar->channels = s->channels; - - avpriv_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in us */ - return 0; -} - -static int audio_read_packet(AVFormatContext *s1, AVPacket *pkt) -{ - OSSAudioData *s = s1->priv_data; - int ret, bdelay; - int64_t cur_time; - struct audio_buf_info abufi; - - if ((ret=av_new_packet(pkt, s->frame_size)) < 0) - return ret; - - ret = read(s->fd, pkt->data, pkt->size); - if (ret <= 0){ - av_packet_unref(pkt); - pkt->size = 0; - if (ret<0) return AVERROR(errno); - else return AVERROR_EOF; - } - pkt->size = ret; - - /* compute pts of the start of the packet */ - cur_time = av_gettime(); - bdelay = ret; - if (ioctl(s->fd, SNDCTL_DSP_GETISPACE, &abufi) == 0) { - bdelay += abufi.bytes; - } - /* subtract time represented by the number of bytes in the audio fifo */ - cur_time -= (bdelay * 1000000LL) / (s->sample_rate * s->channels); - - /* convert to wanted units */ - pkt->pts = cur_time; - - if (s->flip_left && s->channels == 2) { - int i; - short *p = (short *) pkt->data; - - for (i = 0; i < ret; i += 4) { - *p = ~*p; - p += 2; - } - } - return 0; -} - -static int audio_read_close(AVFormatContext *s1) -{ - OSSAudioData *s = s1->priv_data; - - ff_oss_audio_close(s); - return 0; -} - -static const AVOption options[] = { - { "sample_rate", "", offsetof(OSSAudioData, sample_rate), AV_OPT_TYPE_INT, {.i64 = 48000}, 1, INT_MAX, AV_OPT_FLAG_DECODING_PARAM }, - { "channels", "", offsetof(OSSAudioData, channels), AV_OPT_TYPE_INT, {.i64 = 2}, 1, INT_MAX, AV_OPT_FLAG_DECODING_PARAM }, - { NULL }, -}; - -static const AVClass oss_demuxer_class = { - .class_name = "OSS demuxer", - .item_name = av_default_item_name, - .option = options, - .version = LIBAVUTIL_VERSION_INT, -}; - -AVInputFormat ff_oss_demuxer = { - .name = "oss", - .long_name = NULL_IF_CONFIG_SMALL("OSS (Open Sound System) capture"), - .priv_data_size = sizeof(OSSAudioData), - .read_header = audio_read_header, - .read_packet = audio_read_packet, - .read_close = audio_read_close, - .flags = AVFMT_NOFILE, - .priv_class = &oss_demuxer_class, -}; |