From 7f172339fdcdeb0393c1a296da95acb6fc57d3b8 Mon Sep 17 00:00:00 2001
From: Fabrice Bellard <fabrice@bellard.org>
Date: Thu, 23 Jan 2003 10:33:16 +0000
Subject: [PATCH] grab device is in AVFormatParameter (at least better than
 global variable)

Originally committed as revision 1499 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavformat/audio.c       | 11 ++++++-----
 libavformat/avformat.h    |  6 ++----
 libavformat/beosaudio.cpp |  3 ---
 libavformat/dv1394.c      |  7 +++++--
 libavformat/grab.c        |  4 ++++
 libavformat/utils.c       |  2 --
 6 files changed, 17 insertions(+), 16 deletions(-)

diff --git a/libavformat/audio.c b/libavformat/audio.c
index 4fa155c85d..05055a1781 100644
--- a/libavformat/audio.c
+++ b/libavformat/audio.c
@@ -28,8 +28,6 @@
 #include <sys/mman.h>
 #include <sys/time.h>
 
-const char *audio_device = "/dev/dsp";
-
 #define AUDIO_BLOCK_SIZE 4096
 
 typedef struct {
@@ -43,13 +41,16 @@ typedef struct {
     int buffer_ptr;
 } AudioData;
 
-static int audio_open(AudioData *s, int is_output)
+static int audio_open(AudioData *s, int is_output, const char *audio_device)
 {
     int audio_fd;
     int tmp, err;
     char *flip = getenv("AUDIO_FLIP_LEFT");
 
     /* open linux audio device */
+    if (!audio_device)
+        audio_device = "/dev/dsp";
+
     if (is_output)
         audio_fd = open(audio_device, O_WRONLY);
     else
@@ -155,7 +156,7 @@ static int audio_write_header(AVFormatContext *s1)
     st = s1->streams[0];
     s->sample_rate = st->codec.sample_rate;
     s->channels = st->codec.channels;
-    ret = audio_open(s, 1);
+    ret = audio_open(s, 1, NULL);
     if (ret < 0) {
         return -EIO;
     } else {
@@ -217,7 +218,7 @@ static int audio_read_header(AVFormatContext *s1, AVFormatParameters *ap)
     s->sample_rate = ap->sample_rate;
     s->channels = ap->channels;
 
-    ret = audio_open(s, 0);
+    ret = audio_open(s, 0, ap->device);
     if (ret < 0) {
         av_free(st);
         return -EIO;
diff --git a/libavformat/avformat.h b/libavformat/avformat.h
index e67001c81b..9b00eba471 100644
--- a/libavformat/avformat.h
+++ b/libavformat/avformat.h
@@ -61,6 +61,8 @@ typedef struct AVFormatParameters {
     int height;
     enum PixelFormat pix_fmt;
     struct AVImageFormat *image_format;
+    int channel; /* used to select dv channel */
+    const char *device; /* video4linux, audio or DV device */
 } AVFormatParameters;
 
 #define AVFMT_NOFILE        0x0001 /* no file should be opened */
@@ -381,10 +383,6 @@ int audio_init(void);
 
 /* DV1394 */
 int dv1394_init(void);
-extern int dv1394_channel;
-
-extern const char *video_device;
-extern const char *audio_device;
 
 #ifdef HAVE_AV_CONFIG_H
 int strstart(const char *str, const char *val, const char **ptr);
diff --git a/libavformat/beosaudio.cpp b/libavformat/beosaudio.cpp
index a1ae0a53c8..d2a52800e6 100644
--- a/libavformat/beosaudio.cpp
+++ b/libavformat/beosaudio.cpp
@@ -34,9 +34,6 @@ extern "C" {
 /* enable performance checks */
 //#define PERF_CHECK
 
-//const char *audio_device = "/dev/dsp";
-const char *audio_device = "beosaudio:";
-
 /* Pipes are 4k in BeOS IIRC */
 #define AUDIO_BLOCK_SIZE 4096
 //#define AUDIO_BLOCK_SIZE 2048
diff --git a/libavformat/dv1394.c b/libavformat/dv1394.c
index 8515160545..f0b5e8d5ee 100644
--- a/libavformat/dv1394.c
+++ b/libavformat/dv1394.c
@@ -76,6 +76,7 @@ static int dv1394_read_header(AVFormatContext * context, AVFormatParameters * ap
 {
     struct dv1394_data *dv = context->priv_data;
     AVStream *st;
+    const char *video_device;
 
     st = av_new_stream(context, 0);
     if (!st)
@@ -83,14 +84,16 @@ static int dv1394_read_header(AVFormatContext * context, AVFormatParameters * ap
 
     dv->width   = DV1394_WIDTH;
     dv->height  = DV1394_HEIGHT;
-    dv->channel = dv1394_channel;
+    dv->channel = ap->channel;
 
     dv->frame_rate = 30;
 
     dv->frame_size = DV1394_NTSC_FRAME_SIZE;
 
     /* Open and initialize DV1394 device */
-
+    video_device = ap->device;
+    if (!video_device)
+        video_device = "/dev/dv1394/0";
     dv->fd = open(video_device, O_RDONLY);
     if (dv->fd < 0) {
         perror("Failed to open DV interface");
diff --git a/libavformat/grab.c b/libavformat/grab.c
index 263c2946b9..1c6eafb6c4 100644
--- a/libavformat/grab.c
+++ b/libavformat/grab.c
@@ -62,6 +62,7 @@ static int grab_read_header(AVFormatContext *s1, AVFormatParameters *ap)
     int ret, frame_rate;
     int desired_palette;
     struct video_audio audio;
+    const char *video_device;
 
     if (!ap || ap->width <= 0 || ap->height <= 0 || ap->frame_rate <= 0)
         return -1;
@@ -78,6 +79,9 @@ static int grab_read_header(AVFormatContext *s1, AVFormatParameters *ap)
     s->height = height;
     s->frame_rate = frame_rate;
 
+    video_device = ap->device;
+    if (!video_device)
+        video_device = "/dev/video";
     video_fd = open(video_device, O_RDWR);
     if (video_fd < 0) {
         perror(video_device);
diff --git a/libavformat/utils.c b/libavformat/utils.c
index 4ebca7daec..f811b2c628 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -41,8 +41,6 @@ AVInputFormat *first_iformat;
 AVOutputFormat *first_oformat;
 AVImageFormat *first_image_format;
 
-const char *video_device = "none";
-
 void av_register_input_format(AVInputFormat *format)
 {
     AVInputFormat **p;