avdevice/avdevice: Constify avdevice_list_input_sources/output_sinks

[ffmpeg] / libavdevice / avdevice.c

diff --git a/libavdevice/avdevice.c b/libavdevice/avdevice.c
index 72e1b67887f9bc7d9e63822e17fa63a29e33d0d4..22b7595ab13045a48d81470e5ad68831d0cc8eb6 100644 (file)
--- a/libavdevice/avdevice.c
+++ b/libavdevice/avdevice.c
@@ -27,39 +27,11 @@
 #include "libavutil/ffversion.h"
 const char av_device_ffversion[] = "FFmpeg version " FFMPEG_VERSION;
 
-#define E AV_OPT_FLAG_ENCODING_PARAM
-#define D AV_OPT_FLAG_DECODING_PARAM
-#define A AV_OPT_FLAG_AUDIO_PARAM
-#define V AV_OPT_FLAG_VIDEO_PARAM
-#define OFFSET(x) offsetof(AVDeviceCapabilitiesQuery, x)
-
+#if FF_API_DEVICE_CAPABILITIES
 const AVOption av_device_capabilities[] = {
-    { "codec", "codec", OFFSET(codec), AV_OPT_TYPE_INT,
-        {.i64 = AV_CODEC_ID_NONE}, AV_CODEC_ID_NONE, INT_MAX, E|D|A|V },
-    { "sample_format", "sample format", OFFSET(sample_format), AV_OPT_TYPE_SAMPLE_FMT,
-        {.i64 = AV_SAMPLE_FMT_NONE}, AV_SAMPLE_FMT_NONE, INT_MAX, E|D|A },
-    { "sample_rate", "sample rate", OFFSET(sample_rate), AV_OPT_TYPE_INT,
-        {.i64 = -1}, -1, INT_MAX, E|D|A },
-    { "channels", "channels", OFFSET(channels), AV_OPT_TYPE_INT,
-        {.i64 = -1}, -1, INT_MAX, E|D|A },
-    { "channel_layout", "channel layout", OFFSET(channel_layout), AV_OPT_TYPE_CHANNEL_LAYOUT,
-        {.i64 = -1}, -1, INT_MAX, E|D|A },
-    { "pixel_format", "pixel format", OFFSET(pixel_format), AV_OPT_TYPE_PIXEL_FMT,
-        {.i64 = AV_PIX_FMT_NONE}, AV_PIX_FMT_NONE, INT_MAX, E|D|V },
-    { "window_size", "window size", OFFSET(window_width), AV_OPT_TYPE_IMAGE_SIZE,
-        {.str = NULL}, -1, INT_MAX, E|D|V },
-    { "frame_size", "frame size", OFFSET(frame_width), AV_OPT_TYPE_IMAGE_SIZE,
-        {.str = NULL}, -1, INT_MAX, E|D|V },
-    { "fps", "fps", OFFSET(fps), AV_OPT_TYPE_RATIONAL,
-        {.dbl = -1}, -1, INT_MAX, E|D|V },
     { NULL }
 };
-
-#undef E
-#undef D
-#undef A
-#undef V
-#undef OFFSET
+#endif
 
 unsigned avdevice_version(void)
 {
@@ -75,53 +47,7 @@ const char * avdevice_configuration(void)
 const char * avdevice_license(void)
 {
 #define LICENSE_PREFIX "libavdevice license: "
-    return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
-}
-
-static void *device_next(void *prev, int output,
-                         AVClassCategory c1, AVClassCategory c2)
-{
-    const AVClass *pc;
-    AVClassCategory category = AV_CLASS_CATEGORY_NA;
-    do {
-        if (output) {
-            if (!(prev = av_oformat_next(prev)))
-                break;
-            pc = ((AVOutputFormat *)prev)->priv_class;
-        } else {
-            if (!(prev = av_iformat_next(prev)))
-                break;
-            pc = ((AVInputFormat *)prev)->priv_class;
-        }
-        if (!pc)
-            continue;
-        category = pc->category;
-    } while (category != c1 && category != c2);
-    return prev;
-}
-
-AVInputFormat *av_input_audio_device_next(AVInputFormat  *d)
-{
-    return device_next(d, 0, AV_CLASS_CATEGORY_DEVICE_AUDIO_INPUT,
-                       AV_CLASS_CATEGORY_DEVICE_INPUT);
-}
-
-AVInputFormat *av_input_video_device_next(AVInputFormat  *d)
-{
-    return device_next(d, 0, AV_CLASS_CATEGORY_DEVICE_VIDEO_INPUT,
-                       AV_CLASS_CATEGORY_DEVICE_INPUT);
-}
-
-AVOutputFormat *av_output_audio_device_next(AVOutputFormat *d)
-{
-    return device_next(d, 1, AV_CLASS_CATEGORY_DEVICE_AUDIO_OUTPUT,
-                       AV_CLASS_CATEGORY_DEVICE_OUTPUT);
-}
-
-AVOutputFormat *av_output_video_device_next(AVOutputFormat *d)
-{
-    return device_next(d, 1, AV_CLASS_CATEGORY_DEVICE_VIDEO_OUTPUT,
-                       AV_CLASS_CATEGORY_DEVICE_OUTPUT);
+    return &LICENSE_PREFIX FFMPEG_LICENSE[sizeof(LICENSE_PREFIX) - 1];
 }
 
 int avdevice_app_to_dev_control_message(struct AVFormatContext *s, enum AVAppToDevMessageType type,
@@ -140,49 +66,18 @@ int avdevice_dev_to_app_control_message(struct AVFormatContext *s, enum AVDevToA
     return s->control_message_cb(s, type, data, data_size);
 }
 
+#if FF_API_DEVICE_CAPABILITIES
 int avdevice_capabilities_create(AVDeviceCapabilitiesQuery **caps, AVFormatContext *s,
                                  AVDictionary **device_options)
 {
-    int ret;
-    av_assert0(s && caps);
-    av_assert0(s->iformat || s->oformat);
-    if ((s->oformat && !s->oformat->create_device_capabilities) ||
-        (s->iformat && !s->iformat->create_device_capabilities))
-        return AVERROR(ENOSYS);
-    *caps = av_mallocz(sizeof(**caps));
-    if (!(*caps))
-        return AVERROR(ENOMEM);
-    (*caps)->device_context = s;
-    if (((ret = av_opt_set_dict(s->priv_data, device_options)) < 0))
-        goto fail;
-    if (s->iformat) {
-        if ((ret = s->iformat->create_device_capabilities(s, *caps)) < 0)
-            goto fail;
-    } else {
-        if ((ret = s->oformat->create_device_capabilities(s, *caps)) < 0)
-            goto fail;
-    }
-    av_opt_set_defaults(*caps);
-    return 0;
-  fail:
-    av_freep(caps);
-    return ret;
+    return AVERROR(ENOSYS);
 }
 
 void avdevice_capabilities_free(AVDeviceCapabilitiesQuery **caps, AVFormatContext *s)
 {
-    if (!s || !caps || !(*caps))
-        return;
-    av_assert0(s->iformat || s->oformat);
-    if (s->iformat) {
-        if (s->iformat->free_device_capabilities)
-            s->iformat->free_device_capabilities(s, *caps);
-    } else {
-        if (s->oformat->free_device_capabilities)
-            s->oformat->free_device_capabilities(s, *caps);
-    }
-    av_freep(caps);
+    return;
 }
+#endif
 
 int avdevice_list_devices(AVFormatContext *s, AVDeviceInfoList **device_list)
 {
@@ -225,7 +120,7 @@ static int list_devices_for_context(AVFormatContext *s, AVDictionary *options,
     return ret;
 }
 
-int avdevice_list_input_sources(AVInputFormat *device, const char *device_name,
+int avdevice_list_input_sources(const AVInputFormat *device, const char *device_name,
                                 AVDictionary *device_options, AVDeviceInfoList **device_list)
 {
     AVFormatContext *s = NULL;
@@ -236,7 +131,7 @@ int avdevice_list_input_sources(AVInputFormat *device, const char *device_name,
     return list_devices_for_context(s, device_options, device_list);
 }
 
-int avdevice_list_output_sinks(AVOutputFormat *device, const char *device_name,
+int avdevice_list_output_sinks(const AVOutputFormat *device, const char *device_name,
                                AVDictionary *device_options, AVDeviceInfoList **device_list)
 {
     AVFormatContext *s = NULL;