X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavdevice%2Foss_audio.c;h=a1f0cbd3d03f9b6e91bb1029f5f35b1e0f6cb2c7;hb=a7d3a51dd1efa3073cc9d419a73f709f784ce267;hp=fc5d3c3dd1000be2bf7c5010918697b86c7983fc;hpb=3788a3c0c03585b0f8180a16d2a15b8e0e033313;p=ffmpeg

diff --git a/libavdevice/oss_audio.c b/libavdevice/oss_audio.c
index fc5d3c3dd10..a1f0cbd3d03 100644
--- a/libavdevice/oss_audio.c
+++ b/libavdevice/oss_audio.c
@@ -37,12 +37,14 @@
 #include <sys/select.h>
 
 #include "libavutil/log.h"
+#include "libavutil/opt.h"
 #include "libavcodec/avcodec.h"
-#include "libavformat/avformat.h"
+#include "avdevice.h"
 
 #define AUDIO_BLOCK_SIZE 4096
 
 typedef struct {
+    AVClass *class;
     int fd;
     int sample_rate;
     int channels;
@@ -78,13 +80,6 @@ static int audio_open(AVFormatContext *s1, int is_output, const char *audio_devi
         fcntl(audio_fd, F_SETFL, O_NONBLOCK);
 
     s->frame_size = AUDIO_BLOCK_SIZE;
-#if 0
-    tmp = (NB_FRAGMENTS << 16) | FRAGMENT_BITS;
-    err = ioctl(audio_fd, SNDCTL_DSP_SETFRAGMENT, &tmp);
-    if (err < 0) {
-        perror("SNDCTL_DSP_SETFRAGMENT");
-    }
-#endif
 
     /* select format : favour native format */
     err = ioctl(audio_fd, SNDCTL_DSP_GETFMTS, &tmp);
@@ -214,15 +209,17 @@ static int audio_read_header(AVFormatContext *s1, AVFormatParameters *ap)
     AVStream *st;
     int ret;
 
-    if (ap->sample_rate <= 0 || ap->channels <= 0)
-        return -1;
+#if FF_API_FORMAT_PARAMETERS
+    if (ap->sample_rate > 0)
+        s->sample_rate = ap->sample_rate;
+    if (ap->channels > 0)
+        s->channels = ap->channels;
+#endif
 
     st = av_new_stream(s1, 0);
     if (!st) {
         return AVERROR(ENOMEM);
     }
-    s->sample_rate = ap->sample_rate;
-    s->channels = ap->channels;
 
     ret = audio_open(s1, 0, s1->filename);
     if (ret < 0) {
@@ -291,6 +288,19 @@ static int audio_read_close(AVFormatContext *s1)
 }
 
 #if CONFIG_OSS_INDEV
+static const AVOption options[] = {
+    { "sample_rate", "", offsetof(AudioData, sample_rate), FF_OPT_TYPE_INT, {.dbl = 48000}, 1, INT_MAX, AV_OPT_FLAG_DECODING_PARAM },
+    { "channels",    "", offsetof(AudioData, channels),    FF_OPT_TYPE_INT, {.dbl = 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 = {
     "oss",
     NULL_IF_CONFIG_SMALL("Open Sound System capture"),
@@ -300,6 +310,7 @@ AVInputFormat ff_oss_demuxer = {
     audio_read_packet,
     audio_read_close,
     .flags = AVFMT_NOFILE,
+    .priv_class = &oss_demuxer_class,
 };
 #endif