23 #include <dc1394/dc1394.h> 68 { 1875, DC1394_FRAMERATE_1_875 },
69 { 3750, DC1394_FRAMERATE_3_75 },
70 { 7500, DC1394_FRAMERATE_7_5 },
71 { 15000, DC1394_FRAMERATE_15 },
72 { 30000, DC1394_FRAMERATE_30 },
73 { 60000, DC1394_FRAMERATE_60 },
74 {120000, DC1394_FRAMERATE_120 },
75 {240000, DC1394_FRAMERATE_240 },
79 #define OFFSET(x) offsetof(dc1394_data, x) 80 #define DEC AV_OPT_FLAG_DECODING_PARAM 170 dc1394camera_list_t *
list;
179 dc1394->
d = dc1394_new();
180 if (dc1394_camera_enumerate(dc1394->
d, &list) != DC1394_SUCCESS || !list) {
185 if (list->num == 0) {
187 dc1394_camera_free_list(list);
192 dc1394->
camera = dc1394_camera_new (dc1394->
d, list->ids[0].guid);
197 dc1394_camera_free_list(list);
206 dc1394_camera_free_list (list);
209 if (dc1394->
camera->bmode_capable>0) {
210 dc1394_video_set_operation_mode(dc1394->
camera, DC1394_OPERATION_MODE_1394B);
211 i = DC1394_ISO_SPEED_800;
213 i = DC1394_ISO_SPEED_400;
216 for (res = DC1394_FAILURE; i >= DC1394_ISO_SPEED_MIN && res != DC1394_SUCCESS; i--) {
217 res=dc1394_video_set_iso_speed(dc1394->
camera, i);
219 if (res != DC1394_SUCCESS) {
233 if (dc1394_capture_setup(dc1394->
camera, 10, DC1394_CAPTURE_FLAGS_DEFAULT)!=DC1394_SUCCESS) {
238 if (dc1394_video_set_transmission(dc1394->
camera, DC1394_ON) !=DC1394_SUCCESS) {
245 dc1394_capture_stop(dc1394->
camera);
246 dc1394_video_set_transmission(dc1394->
camera, DC1394_OFF);
247 dc1394_camera_free (dc1394->
camera);
249 dc1394_free(dc1394->
d);
260 if (dc1394_capture_enqueue(dc1394->
camera, dc1394->
frame) != DC1394_SUCCESS)
264 res = dc1394_capture_dequeue(dc1394->
camera, DC1394_CAPTURE_POLICY_WAIT, &dc1394->
frame);
265 if (res == DC1394_SUCCESS) {
283 dc1394_video_set_transmission(dc1394->
camera, DC1394_OFF);
284 dc1394_capture_stop(dc1394->
camera);
285 dc1394_camera_free(dc1394->
camera);
286 dc1394_free(dc1394->
d);
packed YUV 4:2:2, 16bpp, Cb Y0 Cr Y1
static int dc1394_read_common(AVFormatContext *c, const struct dc1394_frame_format **select_fmt, const struct dc1394_frame_rate **select_fps)
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
static enum AVPixelFormat pix_fmt
int av_parse_video_rate(AVRational *rate, const char *arg)
Parse str and store the detected values in *rate.
int av_parse_video_size(int *width_ptr, int *height_ptr, const char *str)
Parse str and put in width_ptr and height_ptr the detected values.
dc1394video_frame_t * frame
#define LIBAVUTIL_VERSION_INT
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
AVInputFormat ff_libdc1394_demuxer
int index
stream index in AVFormatContext
static const struct dc1394_frame_format dc1394_frame_formats[]
const char * av_default_item_name(void *ptr)
Return the context name.
static int dc1394_read_header(AVFormatContext *c)
char * framerate
Set by a private option.
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
int64_t bit_rate
The average bitrate of the encoded data (in bits per second).
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
int av_image_get_buffer_size(enum AVPixelFormat pix_fmt, int width, int height, int align)
Return the size in bytes of the amount of data required to store an image with the given parameters...
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
static const struct dc1394_frame_rate dc1394_frame_rates[]
enum AVMediaType codec_type
General type of the encoded data.
AVRational avg_frame_rate
Average framerate.
int flags
A combination of AV_PKT_FLAG values.
common internal API header
int64_t av_rescale(int64_t a, int64_t b, int64_t c)
Rescale a 64-bit integer with rounding to nearest.
char * pixel_format
Set by a private option.
#define AV_LOG_INFO
Standard information.
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining list
static const AVOption options[]
static const AVClass libdc1394_class
Describe the class of an AVClass context structure.
Rational number (pair of numerator and denominator).
int frame_rate
frames per 1000 seconds (fps * 1000)
char * video_size
String describing video size, set by a private option.
static int dc1394_read_packet(AVFormatContext *c, AVPacket *pkt)
void * priv_data
Format private data.
AVCodecParameters * codecpar
Codec parameters associated with this stream.
enum AVPixelFormat av_get_pix_fmt(const char *name)
Return the pixel format corresponding to name.
const char * av_get_pix_fmt_name(enum AVPixelFormat pix_fmt)
Return the short name for a pixel format, NULL in case pix_fmt is unknown.
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later.That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another.Frame references ownership and permissions
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf default minimum maximum flags name is the option keep it simple and lowercase description are in without and describe what they for example set the foo of the bar offset is the offset of the field in your local context
packed YUV 4:1:1, 12bpp, Cb Y0 Y1 Cr Y2 Y3
AVPixelFormat
Pixel format.
This structure stores compressed data.
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
static int dc1394_close(AVFormatContext *context)