forked from tTh/FloatImg
150 lines
4.2 KiB
C
150 lines
4.2 KiB
C
/*
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* fonctions pour afficher les structures de V4L2
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*/
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#include <stdio.h>
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#include <inttypes.h>
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#include <linux/videodev2.h>
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#include "v4l2_pr_structs.h"
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#define FP (stdout)
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extern int verbosity;
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/* --------------------------------------------------------------------- */
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static char *fmttype2str(int type)
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{
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switch(type) {
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case 0: return "[zero]";
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case 1: return "video capture";
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case 2: return "video output";
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case 13: return "META capture";
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}
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return "???";
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}
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/* --------------------------------------------------------------------- */
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static void pr_capabilities(uint32_t caps)
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{
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fputs(" ", FP);
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if (caps & V4L2_CAP_VIDEO_CAPTURE) fputs("vcapt ", FP);
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if (caps & V4L2_CAP_VIDEO_OUTPUT) fputs("vout ", FP);
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if (caps & V4L2_CAP_VIDEO_OVERLAY) fputs("overlay ", FP);
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if (caps & V4L2_CAP_VBI_CAPTURE) fputs("vbicapt ", FP);
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if (caps & V4L2_CAP_VBI_OUTPUT) fputs("vbiout ", FP);
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/* to be continued */
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if (caps & V4L2_CAP_AUDIO) fputs("audio ", FP);
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if (caps & V4L2_CAP_SDR_CAPTURE) fputs("sdrcapt ", FP);
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if (caps & V4L2_CAP_EXT_PIX_FORMAT) fputs("extpix ", FP);
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if (caps & V4L2_CAP_SDR_OUTPUT) fputs("sdrout ", FP);
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if (caps & V4L2_CAP_READWRITE) fputs("rwsysc ", FP);
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if (caps & V4L2_CAP_ASYNCIO) fputs("asyncio ", FP);
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if (caps & V4L2_CAP_STREAMING) fputs("stream ", FP);
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fputs("\n", FP);
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}
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/* --------------------------------------------------------------------- */
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int pr_v4l2_capability(char *txt, struct v4l2_capability *ptr)
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{
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fprintf(FP, "-- v4l2_capability, %-15s %p\n", txt, ptr);
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fprintf(FP, " driver %s\n", ptr->driver);
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fprintf(FP, " card %s\n", ptr->card);
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fprintf(FP, " bus info %s\n", ptr->bus_info);
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fprintf(FP, " version 0x%X\n", ptr->version);
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fprintf(FP, " capabilities 0x%X\n", ptr->capabilities);
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pr_capabilities(ptr->capabilities);
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fprintf(FP, " device caps 0x%X\n", ptr->device_caps);
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return -1;
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}
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/* --------------------------------------------------------------------- */
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static char *str_input_type(int t)
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{
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switch (t) {
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case V4L2_INPUT_TYPE_TUNER: return "tuner";
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case V4L2_INPUT_TYPE_CAMERA: return "camera";
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case V4L2_INPUT_TYPE_TOUCH: return "touch";
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}
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return "???";
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}
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/* --------------------------------------------------------------------- */
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static void pr_input_status(uint32_t st)
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{
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if (st & V4L2_IN_ST_NO_POWER) fputs("nopower", FP);
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if (st & V4L2_IN_ST_NO_SIGNAL) fputs("nosignal", FP);
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if (st & V4L2_IN_ST_NO_COLOR) fputs("nocolor", FP);
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/* to be continued */
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}
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/* --------------------------------------------------------------------- */
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int pr_v4l2_input(char *txt, struct v4l2_input *ptr)
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{
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fprintf(FP, "-- v4l2_input, %-15s %p\n", txt, ptr);
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fprintf(FP, " index %d\n", ptr->index);
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fprintf(FP, " name %s\n", ptr->name);
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fprintf(FP, " type %d %s\n", ptr->type,
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str_input_type(ptr->type));
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fprintf(FP, " audioset 0x%X\n", ptr->audioset);
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fprintf(FP, " tuner 0x%X\n", ptr->tuner);
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/* XXX v4l2_std_id std; */
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fprintf(FP, " status %d\n", ptr->status);
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pr_input_status(ptr->status);
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fprintf(FP, " capabilities 0x%X\n", ptr->capabilities);
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return -1;
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}
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/* --------------------------------------------------------------------- */
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int pr_v4l2_format(char *txt, struct v4l2_format *ptr)
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{
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fprintf(FP, "-- v4l2_format, %-15s %p\n", txt, ptr);
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fprintf(FP, " type %d %s\n", ptr->type,/* enum v4l2_buf_type */
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fmttype2str(ptr->type));
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switch(ptr->type) {
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case 1: // fputs(" Capture\n", FP);
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fprintf(FP, " dims %dx%d\n",
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ptr->fmt.pix.width,
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ptr->fmt.pix.height);
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break;
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default: fprintf(FP, "type is %d\n", ptr->type);
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break;
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}
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fputs(".\n", FP);
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return 0;
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}
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/* --------------------------------------------------------------------- */
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int pr_v4l2_requestbuffers(char *txt, struct v4l2_requestbuffers *ptr)
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{
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fprintf(FP, "-- v4l2_requestbuffers, %s %p\n", txt, ptr);
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fprintf(FP, " type %d\n", ptr->type); /* enum v4l2_buf_type */
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return 0;
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}
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/* --------------------------------------------------------------------- */
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/* --------------------------------------------------------------------- */
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/* --------------------------------------------------------------------- */
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