30 #include <X11/extensions/Xv.h> 31 #include <X11/extensions/XShm.h> 32 #include <X11/extensions/Xvlib.h> 81 for (i = 0; m->
tag; m = &tag_codec_map[++
i]) {
106 unsigned int num_adaptors;
108 XvImageFormatValues *fv;
110 XWindowAttributes window_attrs;
111 int num_formats = 0, j,
tag,
ret;
117 av_log(s,
AV_LOG_ERROR,
"Only a single raw or wrapped avframe video stream is supported.\n");
123 "Unsupported pixel format '%s', only yuv420p, uyvy422, yuyv422 are currently supported\n",
166 if (XvQueryAdaptors(xv->
display, DefaultRootWindow(xv->
display), &num_adaptors, &ai) != Success) {
175 XvFreeAdaptorInfo(ai);
182 for (j = 0; j < num_formats; j++) {
183 if (fv[j].
id == tag) {
189 if (j >= num_formats) {
191 "Device does not support pixel format %s, aborting\n",
212 XGetWindowAttributes(xv->
display, xv->
window, &window_attrs);
213 fgcolor.red = fgcolor.green = fgcolor.blue = 0;
214 fgcolor.flags = DoRed | DoGreen | DoBlue;
215 XAllocColor(xv->
display, window_attrs.colormap, &fgcolor);
216 XSetForeground(xv->
display, xv->
gc, fgcolor.pixel);
259 XWindowAttributes window_attrs;
261 XGetWindowAttributes(xv->
display, xv->
window, &window_attrs);
264 xv->
dest_w = window_attrs.width;
265 xv->
dest_h = window_attrs.height;
268 rect[0].width = rect[1].width = xv->
dest_x;
269 rect[0].height = rect[1].height = window_attrs.height;
270 rect[0].y = rect[1].y = 0;
276 rect[0].width = rect[1].width = window_attrs.width;
277 rect[0].height = rect[1].height = xv->
dest_y;
278 rect[0].x = rect[1].x = 0;
300 img->data + img->offsets[0],
301 img->data + img->offsets[1],
302 img->data + img->offsets[2]
308 while (XPending(xv->
display)) {
309 XNextEvent(xv->
display, &event);
310 if (event.type == ClientMessage && event.xclient.data.l[0] == xv->
wm_delete_message) {
359 #define OFFSET(x) offsetof(XVContext, x) 362 {
"window_id",
"set existing window id",
OFFSET(window_id),
AV_OPT_TYPE_INT64, {.i64 = 0 }, 0, INT64_MAX, AV_OPT_FLAG_ENCODING_PARAM },
365 {
"window_x",
"set window x offset",
OFFSET(window_x),
AV_OPT_TYPE_INT, {.i64 = 0 }, -INT_MAX, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
366 {
"window_y",
"set window y offset",
OFFSET(window_y),
AV_OPT_TYPE_INT, {.i64 = 0 }, -INT_MAX, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
391 .priv_class = &xv_class,
packed YUV 4:2:2, 16bpp, Cb Y0 Cr Y1
static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, int unqueue)
This structure describes decoded (raw) audio or video data.
static void compute_display_area(AVFormatContext *s)
ptrdiff_t const GLvoid * data
static const AVOption options[]
#define LIBAVUTIL_VERSION_INT
AVRational sample_aspect_ratio
Video only.
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown)
int av_image_fill_arrays(uint8_t *dst_data[4], int dst_linesize[4], const uint8_t *src, enum AVPixelFormat pix_fmt, int width, int height, int align)
Setup the data pointers and linesizes based on the specified image parameters and the provided array...
const char * av_default_item_name(void *ptr)
Return the context name.
unsigned int dest_h
display area dimensions
static int xv_write_header(AVFormatContext *s)
static int xv_repaint(AVFormatContext *s)
This struct describes the properties of an encoded stream.
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
static int xv_write_frame(AVFormatContext *s, int stream_index, AVFrame **frame, unsigned flags)
XShmSegmentInfo yuv_shminfo
int dest_y
display area position
static int xv_get_tag_from_format(enum AVPixelFormat format)
AVStream ** streams
A list of all streams in the file.
static void input_data(MLPEncodeContext *ctx, void *samples)
Wrapper function for inputting data in two different bit-depths.
#define AV_OPT_FLAG_ENCODING_PARAM
a generic parameter which can be set by the user for muxing or encoding
Main libavdevice API header.
static const AVClass xv_class
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
enum AVPixelFormat image_format
static int xv_write_packet(AVFormatContext *s, AVPacket *pkt)
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
char * url
input or output URL.
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
enum AVMediaType codec_type
General type of the encoded data.
void av_image_copy(uint8_t *dst_data[4], int dst_linesizes[4], const uint8_t *src_data[4], const int src_linesizes[4], enum AVPixelFormat pix_fmt, int width, int height)
Copy image in src_data to dst_data.
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
int64_t av_rescale(int64_t a, int64_t b, int64_t c)
Rescale a 64-bit integer with rounding to nearest.
static int write_trailer(AVFormatContext *s1)
static int xv_write_trailer(AVFormatContext *s)
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
Passthrough codec, AVFrames wrapped in AVPacket.
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
char * av_strdup(const char *s)
Duplicate a string.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
packed YUV 4:2:2, 16bpp, Y0 Cb Y1 Cr
static const XVTagFormatMap tag_codec_map[]
static const char * window_title
Describe the class of an AVClass context structure.
static int xv_control_message(AVFormatContext *s, int type, void *data, size_t data_size)
Rational number (pair of numerator and denominator).
offset must point to two consecutive integers
#define flags(name, subs,...)
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
static int av_cmp_q(AVRational a, AVRational b)
Compare two rationals.
AVOutputFormat ff_xv_muxer
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
void * priv_data
Format private data.
static int write_picture(AVFormatContext *s, uint8_t *input_data[4], int linesize[4])
static void write_header(FFV1Context *f)
AVRational av_mul_q(AVRational b, AVRational c)
Multiply two rationals.
AVCodecParameters * codecpar
Codec parameters associated with this stream.
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
#define MKTAG(a, b, c, d)
#define AVERROR_EXTERNAL
Generic error in an external library.
AVPixelFormat
Pixel format.
This structure stores compressed data.