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v4l2_demo.c
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/* v4l2n: V4L2 CLI */
#include <stdio.h>
#include <errno.h>
#include <unistd.h>
#include <stdarg.h>
#include <stdlib.h>
#include <getopt.h>
#include <string.h>
#include <fcntl.h>
#include <ctype.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/time.h>
#include <time.h>
#include <limits.h>
#include <sys/wait.h>
#include <stdint.h>
#include <setjmp.h>
#include "ion.h"
#include "linux/videodev2.h"
#include "linux/v4l2-subdev.h"
#define FALSE 0
#define TRUE (!FALSE)
#define STRINGIFY_(x) #x
#define STRINGIFY(x) STRINGIFY_(x)
#define MIN(a,b) ((a) <= (b) ? (a) : (b))
#define MAX(a,b) ((a) >= (b) ? (a) : (b))
#define CLEAR(x) memset(&(x), 0, sizeof(x));
#define SIZE(x) (sizeof(x)/sizeof((x)[0]))
#define BIT(x) (1<<(x))
static unsigned long int _PAGE_SIZE;
static unsigned long int _PAGE_MASK;
#define PAGE_ALIGN(x) ((typeof(x))(((unsigned long int)(x) + _PAGE_SIZE - 1) & _PAGE_MASK))
#define MAX_RING_BUFFERS 20
#define MAX_CAPTURE_BUFFERS 100
#define MAX_BUFFER_SIZE (64*1024*1024)
#define MAX_PIPES 6
typedef unsigned char bool;
static char *name = "v4l2_demo";
/* Holds information returned by QUERYBUF and needed
* for subsequent QBUF/DQBUF. Buffers are reused for long sequences. */
struct ring_buffer {
struct v4l2_buffer querybuf;
bool queued;
void *malloc_p; /* Points to address returned by malloc() */
void *mmap_p; /* Points to address returned by mmap() */
void *ion_buffer_fd; /* file descriptor of memory allocated via ION */
void *start; /* Points to beginning of data in the buffer */
};
/* Used for saving each captured frame if saving was requested */
struct capture_buffer {
struct v4l2_pix_format pix_format;
void *image;
int length; /* Length of data in the buffer in bytes */
};
struct pipe {
int fd;
char *output;
struct v4l2_format format;
struct v4l2_requestbuffers reqbufs;
int num_capture_buffers;
struct capture_buffer capture_buffers[MAX_CAPTURE_BUFFERS];
struct ring_buffer ring_buffers[MAX_RING_BUFFERS];
bool streaming;
bool active;
bool msg_full_printed;
};
static struct {
int verbosity;
bool save_images;
bool calculate_stats;
struct timeval start_time;
jmp_buf exception;
unsigned int pipe;
struct pipe pipes[MAX_PIPES];
} vars;
/* ION memory management.*/
static struct {
int fd;
int map_fd[MAX_RING_BUFFERS];
ion_user_handle_t user_handle[MAX_RING_BUFFERS];
} ion;
struct symbol_list {
int id;
const char *symbol;
};
#define SYMBOL_END { -1, NULL }
struct token_list {
int id;
int flags;
const char *token;
const struct symbol_list *symbols;
};
#define TOKEN_END { 0, 0, NULL, NULL }
#define TOKEN_F_OPTARG BIT(0) /* Token may have optional argument */
#define TOKEN_F_ARG BIT(1) /* Token must have argument or it is an error */
#define TOKEN_F_ARG2 BIT(2) /* Token may have 2 integer arguments */
#define TOKEN_F_ARG4 BIT(3) /* Token may have 4 integer arguments */
#define V4L2_CID "V4L2_CID_"
#define CONTROL(id) { V4L2_CID_##id, (#id) }
static const struct symbol_list controls[] = {
CONTROL(BASE),
CONTROL(USER_BASE),
CONTROL(USER_CLASS),
CONTROL(BRIGHTNESS),
CONTROL(CONTRAST),
CONTROL(SATURATION),
CONTROL(HUE),
CONTROL(AUDIO_VOLUME),
CONTROL(AUDIO_BALANCE),
CONTROL(AUDIO_BASS),
CONTROL(AUDIO_TREBLE),
CONTROL(AUDIO_MUTE),
CONTROL(AUDIO_LOUDNESS),
CONTROL(BLACK_LEVEL),
CONTROL(AUTO_WHITE_BALANCE),
CONTROL(DO_WHITE_BALANCE),
CONTROL(RED_BALANCE),
CONTROL(BLUE_BALANCE),
CONTROL(GAMMA),
CONTROL(WHITENESS),
CONTROL(EXPOSURE),
CONTROL(AUTOGAIN),
CONTROL(GAIN),
CONTROL(HFLIP),
CONTROL(VFLIP),
CONTROL(POWER_LINE_FREQUENCY),
CONTROL(HUE_AUTO),
CONTROL(WHITE_BALANCE_TEMPERATURE),
CONTROL(SHARPNESS),
CONTROL(BACKLIGHT_COMPENSATION),
CONTROL(CHROMA_AGC),
CONTROL(COLOR_KILLER),
CONTROL(COLORFX),
CONTROL(AUTOBRIGHTNESS),
CONTROL(BAND_STOP_FILTER),
CONTROL(ROTATE),
CONTROL(BG_COLOR),
CONTROL(CHROMA_GAIN),
CONTROL(ILLUMINATORS_1),
CONTROL(ILLUMINATORS_2),
CONTROL(MIN_BUFFERS_FOR_CAPTURE),
CONTROL(MIN_BUFFERS_FOR_OUTPUT),
CONTROL(ALPHA_COMPONENT),
CONTROL(COLORFX_CBCR),
CONTROL(LASTP1),
CONTROL(USER_MEYE_BASE),
CONTROL(USER_BTTV_BASE),
CONTROL(USER_S2255_BASE),
CONTROL(USER_SI476X_BASE),
CONTROL(MPEG_BASE),
CONTROL(MPEG_CLASS),
CONTROL(MPEG_STREAM_TYPE),
CONTROL(MPEG_STREAM_PID_PMT),
CONTROL(MPEG_STREAM_PID_AUDIO),
CONTROL(MPEG_STREAM_PID_VIDEO),
CONTROL(MPEG_STREAM_PID_PCR),
CONTROL(MPEG_STREAM_PES_ID_AUDIO),
CONTROL(MPEG_STREAM_PES_ID_VIDEO),
CONTROL(MPEG_STREAM_VBI_FMT),
CONTROL(MPEG_AUDIO_SAMPLING_FREQ),
CONTROL(MPEG_AUDIO_ENCODING),
CONTROL(MPEG_AUDIO_L1_BITRATE),
CONTROL(MPEG_AUDIO_L2_BITRATE),
CONTROL(MPEG_AUDIO_L3_BITRATE),
CONTROL(MPEG_AUDIO_MODE),
CONTROL(MPEG_AUDIO_MODE_EXTENSION),
CONTROL(MPEG_AUDIO_EMPHASIS),
CONTROL(MPEG_AUDIO_CRC),
CONTROL(MPEG_AUDIO_MUTE),
CONTROL(MPEG_AUDIO_AAC_BITRATE),
CONTROL(MPEG_AUDIO_AC3_BITRATE),
CONTROL(MPEG_AUDIO_DEC_PLAYBACK),
CONTROL(MPEG_AUDIO_DEC_MULTILINGUAL_PLAYBACK),
CONTROL(MPEG_VIDEO_ENCODING),
CONTROL(MPEG_VIDEO_ASPECT),
CONTROL(MPEG_VIDEO_B_FRAMES),
CONTROL(MPEG_VIDEO_GOP_SIZE),
CONTROL(MPEG_VIDEO_GOP_CLOSURE),
CONTROL(MPEG_VIDEO_PULLDOWN),
CONTROL(MPEG_VIDEO_BITRATE_MODE),
CONTROL(MPEG_VIDEO_BITRATE),
CONTROL(MPEG_VIDEO_BITRATE_PEAK),
CONTROL(MPEG_VIDEO_TEMPORAL_DECIMATION),
CONTROL(MPEG_VIDEO_MUTE),
CONTROL(MPEG_VIDEO_MUTE_YUV),
CONTROL(MPEG_VIDEO_DECODER_SLICE_INTERFACE),
CONTROL(MPEG_VIDEO_DECODER_MPEG4_DEBLOCK_FILTER),
CONTROL(MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB),
CONTROL(MPEG_VIDEO_FRAME_RC_ENABLE),
CONTROL(MPEG_VIDEO_HEADER_MODE),
CONTROL(MPEG_VIDEO_MAX_REF_PIC),
CONTROL(MPEG_VIDEO_MB_RC_ENABLE),
CONTROL(MPEG_VIDEO_MULTI_SLICE_MAX_BYTES),
CONTROL(MPEG_VIDEO_MULTI_SLICE_MAX_MB),
CONTROL(MPEG_VIDEO_MULTI_SLICE_MODE),
CONTROL(MPEG_VIDEO_VBV_SIZE),
CONTROL(MPEG_VIDEO_DEC_PTS),
CONTROL(MPEG_VIDEO_DEC_FRAME),
CONTROL(MPEG_VIDEO_VBV_DELAY),
CONTROL(MPEG_VIDEO_REPEAT_SEQ_HEADER),
CONTROL(MPEG_VIDEO_H263_I_FRAME_QP),
CONTROL(MPEG_VIDEO_H263_P_FRAME_QP),
CONTROL(MPEG_VIDEO_H263_B_FRAME_QP),
CONTROL(MPEG_VIDEO_H263_MIN_QP),
CONTROL(MPEG_VIDEO_H263_MAX_QP),
CONTROL(MPEG_VIDEO_H264_I_FRAME_QP),
CONTROL(MPEG_VIDEO_H264_P_FRAME_QP),
CONTROL(MPEG_VIDEO_H264_B_FRAME_QP),
CONTROL(MPEG_VIDEO_H264_MIN_QP),
CONTROL(MPEG_VIDEO_H264_MAX_QP),
CONTROL(MPEG_VIDEO_H264_8X8_TRANSFORM),
CONTROL(MPEG_VIDEO_H264_CPB_SIZE),
CONTROL(MPEG_VIDEO_H264_ENTROPY_MODE),
CONTROL(MPEG_VIDEO_H264_I_PERIOD),
CONTROL(MPEG_VIDEO_H264_LEVEL),
CONTROL(MPEG_VIDEO_H264_LOOP_FILTER_ALPHA),
CONTROL(MPEG_VIDEO_H264_LOOP_FILTER_BETA),
CONTROL(MPEG_VIDEO_H264_LOOP_FILTER_MODE),
CONTROL(MPEG_VIDEO_H264_PROFILE),
CONTROL(MPEG_VIDEO_H264_VUI_EXT_SAR_HEIGHT),
CONTROL(MPEG_VIDEO_H264_VUI_EXT_SAR_WIDTH),
CONTROL(MPEG_VIDEO_H264_VUI_SAR_ENABLE),
CONTROL(MPEG_VIDEO_H264_VUI_SAR_IDC),
CONTROL(MPEG_VIDEO_H264_SEI_FRAME_PACKING),
CONTROL(MPEG_VIDEO_H264_SEI_FP_CURRENT_FRAME_0),
CONTROL(MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE),
CONTROL(MPEG_VIDEO_H264_FMO),
CONTROL(MPEG_VIDEO_H264_FMO_MAP_TYPE),
CONTROL(MPEG_VIDEO_H264_FMO_SLICE_GROUP),
CONTROL(MPEG_VIDEO_H264_FMO_CHANGE_DIRECTION),
CONTROL(MPEG_VIDEO_H264_FMO_CHANGE_RATE),
CONTROL(MPEG_VIDEO_H264_FMO_RUN_LENGTH),
CONTROL(MPEG_VIDEO_H264_ASO),
CONTROL(MPEG_VIDEO_H264_ASO_SLICE_ORDER),
CONTROL(MPEG_VIDEO_H264_HIERARCHICAL_CODING),
CONTROL(MPEG_VIDEO_H264_HIERARCHICAL_CODING_TYPE),
CONTROL(MPEG_VIDEO_H264_HIERARCHICAL_CODING_LAYER),
CONTROL(MPEG_VIDEO_H264_HIERARCHICAL_CODING_LAYER_QP),
CONTROL(MPEG_VIDEO_MPEG4_I_FRAME_QP),
CONTROL(MPEG_VIDEO_MPEG4_P_FRAME_QP),
CONTROL(MPEG_VIDEO_MPEG4_B_FRAME_QP),
CONTROL(MPEG_VIDEO_MPEG4_MIN_QP),
CONTROL(MPEG_VIDEO_MPEG4_MAX_QP),
CONTROL(MPEG_VIDEO_MPEG4_LEVEL),
CONTROL(MPEG_VIDEO_MPEG4_PROFILE),
CONTROL(MPEG_VIDEO_MPEG4_QPEL),
CONTROL(MPEG_CX2341X_BASE),
CONTROL(MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE),
CONTROL(MPEG_CX2341X_VIDEO_SPATIAL_FILTER),
CONTROL(MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE),
CONTROL(MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE),
CONTROL(MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE),
CONTROL(MPEG_CX2341X_VIDEO_TEMPORAL_FILTER),
CONTROL(MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE),
CONTROL(MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_BOTTOM),
CONTROL(MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_TOP),
CONTROL(MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_BOTTOM),
CONTROL(MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_TOP),
CONTROL(MPEG_CX2341X_STREAM_INSERT_NAV_PACKETS),
CONTROL(MPEG_MFC51_BASE),
CONTROL(MPEG_MFC51_VIDEO_DECODER_H264_DISPLAY_DELAY),
CONTROL(MPEG_MFC51_VIDEO_DECODER_H264_DISPLAY_DELAY_ENABLE),
CONTROL(MPEG_MFC51_VIDEO_FRAME_SKIP_MODE),
CONTROL(MPEG_MFC51_VIDEO_FORCE_FRAME_TYPE),
CONTROL(MPEG_MFC51_VIDEO_PADDING),
CONTROL(MPEG_MFC51_VIDEO_PADDING_YUV),
CONTROL(MPEG_MFC51_VIDEO_RC_FIXED_TARGET_BIT),
CONTROL(MPEG_MFC51_VIDEO_RC_REACTION_COEFF),
CONTROL(MPEG_MFC51_VIDEO_H264_ADAPTIVE_RC_ACTIVITY),
CONTROL(MPEG_MFC51_VIDEO_H264_ADAPTIVE_RC_DARK),
CONTROL(MPEG_MFC51_VIDEO_H264_ADAPTIVE_RC_SMOOTH),
CONTROL(MPEG_MFC51_VIDEO_H264_ADAPTIVE_RC_STATIC),
CONTROL(MPEG_MFC51_VIDEO_H264_NUM_REF_PIC_FOR_P),
CONTROL(CAMERA_CLASS_BASE),
CONTROL(CAMERA_CLASS),
CONTROL(EXPOSURE_AUTO),
CONTROL(EXPOSURE_ABSOLUTE),
CONTROL(EXPOSURE_AUTO_PRIORITY),
CONTROL(PAN_RELATIVE),
CONTROL(TILT_RELATIVE),
CONTROL(PAN_RESET),
CONTROL(TILT_RESET),
CONTROL(PAN_ABSOLUTE),
CONTROL(TILT_ABSOLUTE),
CONTROL(FOCUS_ABSOLUTE),
CONTROL(FOCUS_RELATIVE),
CONTROL(FOCUS_AUTO),
CONTROL(ZOOM_ABSOLUTE),
CONTROL(ZOOM_RELATIVE),
CONTROL(ZOOM_CONTINUOUS),
CONTROL(PRIVACY),
CONTROL(IRIS_ABSOLUTE),
CONTROL(IRIS_RELATIVE),
CONTROL(AUTO_EXPOSURE_BIAS),
CONTROL(AUTO_N_PRESET_WHITE_BALANCE),
CONTROL(WIDE_DYNAMIC_RANGE),
CONTROL(IMAGE_STABILIZATION),
CONTROL(ISO_SENSITIVITY),
CONTROL(ISO_SENSITIVITY_AUTO),
CONTROL(EXPOSURE_METERING),
CONTROL(SCENE_MODE),
CONTROL(3A_LOCK),
CONTROL(AUTO_FOCUS_START),
CONTROL(AUTO_FOCUS_STOP),
CONTROL(AUTO_FOCUS_STATUS),
CONTROL(AUTO_FOCUS_RANGE),
CONTROL(FM_TX_CLASS_BASE),
CONTROL(FM_TX_CLASS),
CONTROL(RDS_TX_DEVIATION),
CONTROL(RDS_TX_PI),
CONTROL(RDS_TX_PTY),
CONTROL(RDS_TX_PS_NAME),
CONTROL(RDS_TX_RADIO_TEXT),
CONTROL(AUDIO_LIMITER_ENABLED),
CONTROL(AUDIO_LIMITER_RELEASE_TIME),
CONTROL(AUDIO_LIMITER_DEVIATION),
CONTROL(AUDIO_COMPRESSION_ENABLED),
CONTROL(AUDIO_COMPRESSION_GAIN),
CONTROL(AUDIO_COMPRESSION_THRESHOLD),
CONTROL(AUDIO_COMPRESSION_ATTACK_TIME),
CONTROL(AUDIO_COMPRESSION_RELEASE_TIME),
CONTROL(PILOT_TONE_ENABLED),
CONTROL(PILOT_TONE_DEVIATION),
CONTROL(PILOT_TONE_FREQUENCY),
CONTROL(TUNE_PREEMPHASIS),
CONTROL(TUNE_POWER_LEVEL),
CONTROL(TUNE_ANTENNA_CAPACITOR),
CONTROL(FLASH_CLASS_BASE),
CONTROL(FLASH_CLASS),
CONTROL(FLASH_LED_MODE),
CONTROL(FLASH_STROBE_SOURCE),
CONTROL(FLASH_STROBE),
CONTROL(FLASH_STROBE_STOP),
CONTROL(FLASH_STROBE_STATUS),
CONTROL(FLASH_TIMEOUT),
CONTROL(FLASH_INTENSITY),
CONTROL(FLASH_TORCH_INTENSITY),
CONTROL(FLASH_INDICATOR_INTENSITY),
CONTROL(FLASH_FAULT),
CONTROL(FLASH_CHARGE),
CONTROL(FLASH_READY),
CONTROL(JPEG_CLASS_BASE),
CONTROL(JPEG_CLASS),
CONTROL(JPEG_CHROMA_SUBSAMPLING),
CONTROL(JPEG_RESTART_INTERVAL),
CONTROL(JPEG_COMPRESSION_QUALITY),
CONTROL(JPEG_ACTIVE_MARKER),
CONTROL(IMAGE_SOURCE_CLASS_BASE),
CONTROL(IMAGE_SOURCE_CLASS),
CONTROL(VBLANK),
CONTROL(HBLANK),
CONTROL(ANALOGUE_GAIN),
CONTROL(IMAGE_PROC_CLASS_BASE),
CONTROL(IMAGE_PROC_CLASS),
CONTROL(LINK_FREQ),
CONTROL(PIXEL_RATE),
CONTROL(TEST_PATTERN),
CONTROL(DV_CLASS_BASE),
CONTROL(DV_CLASS),
CONTROL(DV_TX_HOTPLUG),
CONTROL(DV_TX_RXSENSE),
CONTROL(DV_TX_EDID_PRESENT),
CONTROL(DV_TX_MODE),
CONTROL(DV_TX_RGB_RANGE),
CONTROL(DV_RX_POWER_PRESENT),
CONTROL(DV_RX_RGB_RANGE),
CONTROL(FM_RX_CLASS_BASE),
CONTROL(FM_RX_CLASS),
CONTROL(TUNE_DEEMPHASIS),
CONTROL(RDS_RECEPTION),
SYMBOL_END
};
#define V4L2_BUF_TYPE "V4L2_BUF_TYPE_"
#define BUFTYPE(id) { V4L2_BUF_TYPE_##id, (#id) }
static const struct symbol_list v4l2_buf_types[] = {
BUFTYPE(VIDEO_CAPTURE),
BUFTYPE(VIDEO_OUTPUT),
BUFTYPE(VIDEO_OVERLAY),
BUFTYPE(VBI_CAPTURE),
BUFTYPE(VBI_OUTPUT),
BUFTYPE(SLICED_VBI_CAPTURE),
BUFTYPE(SLICED_VBI_OUTPUT),
BUFTYPE(VIDEO_OUTPUT_OVERLAY),
BUFTYPE(PRIVATE),
SYMBOL_END
};
#define V4L2_PIX_FMT "V4L2_PIX_FMT_"
#define PIXFMT(id) { V4L2_PIX_FMT_##id, (#id) }
static const struct symbol_list pixelformats[] = {
PIXFMT(RGB332),
PIXFMT(RGB444),
PIXFMT(RGB555),
PIXFMT(RGB565),
PIXFMT(RGB555X),
PIXFMT(RGB565X),
PIXFMT(BGR666),
PIXFMT(BGR24),
PIXFMT(RGB24),
PIXFMT(BGR32),
PIXFMT(RGB32),
PIXFMT(GREY),
PIXFMT(Y4),
PIXFMT(Y6),
PIXFMT(Y10),
PIXFMT(Y12),
PIXFMT(Y16),
PIXFMT(Y10BPACK),
PIXFMT(PAL8),
PIXFMT(UV8),
PIXFMT(YVU410),
PIXFMT(YVU420),
PIXFMT(YUYV),
PIXFMT(YYUV),
PIXFMT(YVYU),
PIXFMT(UYVY),
PIXFMT(VYUY),
PIXFMT(YUV422P),
PIXFMT(YUV411P),
PIXFMT(Y41P),
PIXFMT(YUV444),
PIXFMT(YUV555),
PIXFMT(YUV565),
PIXFMT(YUV32),
PIXFMT(YUV410),
PIXFMT(YUV420),
PIXFMT(HI240),
PIXFMT(HM12),
PIXFMT(M420),
PIXFMT(NV12),
PIXFMT(NV21),
PIXFMT(NV16),
PIXFMT(NV61),
PIXFMT(NV24),
PIXFMT(NV42),
PIXFMT(NV12M),
PIXFMT(NV21M),
PIXFMT(NV12MT),
PIXFMT(NV12MT_16X16),
PIXFMT(YUV420M),
PIXFMT(YVU420M),
PIXFMT(SBGGR8),
PIXFMT(SGBRG8),
PIXFMT(SGRBG8),
PIXFMT(SRGGB8),
PIXFMT(SBGGR10),
PIXFMT(SGBRG10),
PIXFMT(SGRBG10),
PIXFMT(SRGGB10),
PIXFMT(SBGGR12),
PIXFMT(SGBRG12),
PIXFMT(SGRBG12),
PIXFMT(SRGGB12),
PIXFMT(SBGGR10ALAW8),
PIXFMT(SGBRG10ALAW8),
PIXFMT(SGRBG10ALAW8),
PIXFMT(SRGGB10ALAW8),
PIXFMT(SBGGR10DPCM8),
PIXFMT(SGBRG10DPCM8),
PIXFMT(SGRBG10DPCM8),
PIXFMT(SRGGB10DPCM8),
PIXFMT(SBGGR16),
PIXFMT(MJPEG),
PIXFMT(JPEG),
PIXFMT(DV),
PIXFMT(MPEG),
PIXFMT(H264),
PIXFMT(H264_NO_SC),
PIXFMT(H264_MVC),
PIXFMT(H263),
PIXFMT(MPEG1),
PIXFMT(MPEG2),
PIXFMT(MPEG4),
PIXFMT(XVID),
PIXFMT(VC1_ANNEX_G),
PIXFMT(VC1_ANNEX_L),
PIXFMT(VP8),
PIXFMT(CPIA1),
PIXFMT(WNVA),
PIXFMT(SN9C10X),
PIXFMT(SN9C20X_I420),
PIXFMT(PWC1),
PIXFMT(PWC2),
PIXFMT(ET61X251),
PIXFMT(SPCA501),
PIXFMT(SPCA505),
PIXFMT(SPCA508),
PIXFMT(SPCA561),
PIXFMT(PAC207),
PIXFMT(MR97310A),
PIXFMT(JL2005BCD),
PIXFMT(SN9C2028),
PIXFMT(SQ905C),
PIXFMT(PJPG),
PIXFMT(OV511),
PIXFMT(OV518),
PIXFMT(STV0680),
PIXFMT(TM6000),
PIXFMT(CIT_YYVYUY),
PIXFMT(KONICA420),
PIXFMT(JPGL),
PIXFMT(SE401),
PIXFMT(S5C_UYVY_JPG),
SYMBOL_END
};
static const struct symbol_list v4l2_memory[] = {
{V4L2_MEMORY_MMAP, "MMAP"},
{V4L2_MEMORY_USERPTR, "USERPTR"},
SYMBOL_END
};
static void print(int lvl, char *msg, ...)
{
va_list ap;
if (vars.verbosity < lvl)
return;
va_start(ap, msg);
vprintf(msg, ap);
va_end(ap);
fflush(stdout);
}
static void error(char *msg, ...)
{
FILE *f = stdout;
va_list ap;
int e = errno;
va_start(ap, msg);
fprintf(f, "%s: ", name);
vfprintf(f, msg, ap);
if (e)
fprintf(f, ": %s (%i)", strerror(e), e);
fprintf(f, "\n");
va_end(ap);
longjmp(vars.exception, 1);
exit(1);
}
#define itd_xioctl(io, arg) itd_xioctl_(#io, io, arg)
static void itd_xioctl_(char *ios, int ion, void *arg)
{
int fd = vars.pipes[vars.pipe].fd;
int r = ioctl(fd, ion, arg);
if (r)
error("%s failed on fd %i", ios, fd);
}
static int itd_xioctl_try(int ion, void *arg)
{
int r = ioctl(vars.pipes[vars.pipe].fd, ion, arg);
if (r != 0) {
int e = -errno;
if (e == 0)
return INT_MIN;
return e;
}
return 0;
}
static void *ralloc(void *p, int s)
{
void *r = realloc(p, s);
if (r)
return r;
free(p);
error("memory reallocation failed");
return NULL;
}
static void symbol_dump(const char *prefix, const struct symbol_list *list)
{
int i;
for (i = 0; list[i].symbol != NULL; i++)
print(0, "%s%s [0x%08X]\n", prefix, list[i].symbol, list[i].id);
}
static int symbol_get(const struct symbol_list *list, const char **symbol)
{
const char *start;
const char *end;
int r, i;
if (!symbol || !symbol[0])
error("symbol missing");
start = *symbol;
if (isdigit(start[0])) {
r = strtol(start, (char **)&end, 0);
if (end == start)
error("zero-length symbol value");
} else {
end = start;
while (isalnum(*end) || *end == '_')
end++;
if (start == end)
error("zero-length symbol");
if (!list)
error("only numeric value allowed");
for (i = 0; list[i].symbol != NULL; i++) {
if (strncasecmp(start, list[i].symbol, end - start) ==
0)
break;
}
if (list[i].symbol == NULL)
error("symbol `%s' not found", start);
r = list[i].id;
}
*symbol = end;
return r;
}
static int values_get(int *val, int val_size, const char **ptr)
{
const char *s = *ptr;
bool paren = FALSE;
int i = 0;
if (!s)
error("missing integer values");
if (*s == '(') {
s++;
paren = TRUE;
}
while (i < val_size) {
char *a;
val[i] = strtol(s, &a, 0);
if (a == s)
break;
s = a;
i++;
if (*s != ',' && *s != '/' && *s != ';')
break;
s++;
}
if (paren) {
if (*s != ')')
error("missing closing parenthesis");
s++;
}
*ptr = s;
return i;
}
static void value_get(int *val, int val_size, const char **ptr)
{
int m = values_get(val, val_size, ptr);
if (m != val_size)
error("too little arguments, %i given but %i expected", m,
val_size);
}
static int token_get(const struct token_list *list, const char **token,
int val[4])
{
const char *start;
const char *end;
int r, i;
if (!token || !token[0])
error("token missing");
CLEAR(*val);
end = start = *token;
while (isalpha(*end) || *end == '_' || *end == '.')
end++;
if (start == end)
error("zero-length token");
for (i = 0; list[i].token != NULL; i++) {
if (strncasecmp(start, list[i].token, end - start) == 0)
break;
}
if (list[i].token == NULL)
error("unrecognized token `%s'", start);
r = list[i].id;
if (*end == '=' || *end == ':') {
if (!(list[i].flags & (TOKEN_F_ARG | TOKEN_F_OPTARG)))
error("token has argument but should not have");
end++;
if (list[i].symbols) {
val[0] = symbol_get(list[i].symbols, &end);
} else if (list[i].flags & TOKEN_F_ARG4) {
value_get(val, 4, &end);
} else if (list[i].flags & TOKEN_F_ARG2) {
value_get(val, 2, &end);
} else {
value_get(val, 1, &end);
}
} else {
if (list[i].flags & TOKEN_F_ARG)
error
("token does not have an argument but should have");
}
/* Go to the beginning of next token in the list */
if (*end && *end == ',')
end++;
*token = end;
return r;
}
static const char *symbol_str(int id, const struct symbol_list list[])
{
static char buffer[200];
int i;
for (i = 0; list[i].symbol; i++)
if (list[i].id == id)
break;
if (list[i].symbol) {
if (id < 1000)
sprintf(buffer, "%s [%i]", list[i].symbol, id);
else
sprintf(buffer, "%s [0x%08X]", list[i].symbol, id);
} else {
sprintf(buffer, "%i", id);
}
return buffer;
}
static const char *symbol_flag_str(int id, const struct symbol_list list[])
{
const int MARGIN = 32;
static char buffer[512];
int len = 0;
int i;
for (i = 0; list[i].symbol; i++) {
if ((id & list[i].id) == list[i].id) {
if (len == 0) {
strcpy(buffer, list[i].symbol);
} else {
strcat(buffer, " ");
strcat(buffer, list[i].symbol);
len++;
}
len += strlen(list[i].symbol);
if (len > sizeof(buffer) - MARGIN)
error("buffer outrun while printing flags");
}
}
if (len == 0) {
len += sprintf(buffer, "0x%08X", id);
} else {
len += sprintf(&buffer[len], " [0x%08X]", id);
}
return buffer;
}
static void print_time(void)
{
struct timeval tv;
if (gettimeofday(&tv, NULL) < 0)
error("gettimeofday failed");
tv.tv_sec -= vars.start_time.tv_sec;
tv.tv_usec -= vars.start_time.tv_usec;
while (tv.tv_usec < 0) {
tv.tv_usec += 1000000;
tv.tv_sec -= 1;
}
print(1, "[%3i.%06i]\n", tv.tv_sec, tv.tv_usec);
}
static void write_file(const char *name, const char *data, int size)
{
}
static void itr_iterate(void (*itd) (const char *), const char *arg)
{
for (vars.pipe = 0; vars.pipe < MAX_PIPES; vars.pipe++) {
if (!vars.pipes[vars.pipe].active)
continue;
itd(arg);
}
}
static void itd_vidioc_enuminput(const char *unused)
{
static const struct symbol_list type[] = {
{V4L2_INPUT_TYPE_TUNER, "V4L2_INPUT_TYPE_TUNER"},
{V4L2_INPUT_TYPE_CAMERA, "V4L2_INPUT_TYPE_CAMERA"},
SYMBOL_END
};
struct v4l2_input p;
int r, i = 0;
do {
CLEAR(p);
p.index = i++;
print(1, "VIDIOC_ENUMINPUT (index=%i)\n", p.index);
r = itd_xioctl_try(VIDIOC_ENUMINPUT, &p);
if (r == 0) {
print(2, "> index: %i\n", p.index);
print(2, "> name: `%.32s'\n", p.name);
print(2, "> type: %s\n",
symbol_str(p.type, type));
print(2, "> audioset: %i\n", p.audioset);
print(2, "> tuner: %i\n", p.tuner);
print(2, "> std: %li\n", p.std);
print(2, "> status: 0x%08X\n", p.status);
print(2, "> capabilities: 0x%08X\n", p.capabilities);
print(2, "> reserved[0]: 0x%08X\n", p.reserved[0]);
print(2, "> reserved[1]: 0x%08X\n", p.reserved[1]);
print(2, "> reserved[2]: 0x%08X\n", p.reserved[2]);
}
} while (r == 0);
if (r != -EINVAL)
error("VIDIOC_ENUMINPUT failed");
}
static void itd_streamon(const char *arg)
{
bool on = (arg != NULL);
enum v4l2_buf_type t = vars.pipes[vars.pipe].reqbufs.type;
print(1, "VIDIOC_STREAM%s (type=%s)\n", on ? "ON" : "OFF",
symbol_str(t, v4l2_buf_types));
if (vars.pipes[vars.pipe].streaming == on)
print(0, "warning: streaming is already in this state\n");
if (on)
itd_xioctl(VIDIOC_STREAMON, &t);
else
itd_xioctl(VIDIOC_STREAMOFF, &t);
vars.pipes[vars.pipe].streaming = on;
}
static void itd_vidioc_parm(const char *s)
{
static const struct symbol_list capturemode[] = {
{V4L2_MODE_HIGHQUALITY, "V4L2_MODE_HIGHQUALITY"},
SYMBOL_END
};
static const struct symbol_list capability[] = {
{V4L2_CAP_TIMEPERFRAME, "V4L2_CAP_TIMEPERFRAME"},
SYMBOL_END
};
static const struct token_list list[] = {
{'t', TOKEN_F_ARG, "type", v4l2_buf_types},
{'b', TOKEN_F_ARG, "capability", capability},
{'c', TOKEN_F_ARG, "capturemode", capturemode},
{'f', TOKEN_F_ARG | TOKEN_F_ARG2, "timeperframe", NULL},
{'e', TOKEN_F_ARG, "extendedmode", NULL},
{'r', TOKEN_F_ARG, "readbuffers", NULL},
{'o', TOKEN_F_ARG, "outputmode", capturemode},
TOKEN_END
};
struct v4l2_streamparm p;
CLEAR(p);
p.type = vars.pipes[vars.pipe].reqbufs.type;
while (*s && *s != '?') {
int val[4];
switch (token_get(list, &s, val)) {
case 't':
p.type = val[0];
break;
case 'b':
if (p.type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
p.parm.capture.capability = val[0];
else
p.parm.output.capability = val[0];
break;
case 'c':
p.parm.capture.capturemode = val[0];
break;
case 'f':
if (p.type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
p.parm.capture.timeperframe.numerator = val[0];
p.parm.capture.timeperframe.denominator =
val[1];
} else {
p.parm.output.timeperframe.numerator = val[0];
p.parm.output.timeperframe.denominator = val[1];
}
break;
case 'e':
p.parm.capture.extendedmode = val[0];
break;
case 'r':
p.parm.capture.readbuffers = val[0];
break;
case 'o':
p.parm.output.outputmode = val[0];
break;
}
}
if (*s == '?') {
print(1, "VIDIOC_G_PARM\n");
itd_xioctl(VIDIOC_G_PARM, &p);
} else {
print(1, "VIDIOC_S_PARM\n");
}
print(2, ": type: %s\n", symbol_str(p.type, v4l2_buf_types));
if (p.type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
print(2, ": capability: %s\n",
symbol_str(p.parm.capture.capability, capability));
print(2, ": capturemode: %s\n",
symbol_str(p.parm.capture.capturemode, capturemode));
print(2, ": timeperframe: %i/%i\n",
p.parm.capture.timeperframe.numerator,
p.parm.capture.timeperframe.denominator);
print(2, ": extendedmode: %i\n", p.parm.capture.extendedmode);
print(2, ": readbuffers: %i\n", p.parm.capture.readbuffers);
} else if (p.type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
print(2, ": capability: %s\n",
symbol_str(p.parm.output.capability, capability));
print(2, ": outputmode: %s\n",
symbol_str(p.parm.capture.capturemode, capturemode));
print(2, ": timeperframe: %i/%i\n",
p.parm.capture.timeperframe.numerator,
p.parm.capture.timeperframe.denominator);
}
if (*s != '?') {
itd_xioctl(VIDIOC_S_PARM, &p);
}
}
static void print_v4l2_format(int v, struct v4l2_format *f, char c)
{
print(v, "%c type: %s\n", c,
symbol_str(f->type, v4l2_buf_types));
if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
print(v, "%c width: %i\n", c, f->fmt.pix.width);
print(v, "%c height: %i\n", c, f->fmt.pix.height);
print(v, "%c pixelformat: %s\n", c,
symbol_str(f->fmt.pix.pixelformat, pixelformats));
print(v, "%c field: %i\n", c, f->fmt.pix.field);
print(v, "%c bytesperline: %i\n", c, f->fmt.pix.bytesperline);
print(v, "%c sizeimage: %i\n", c, f->fmt.pix.sizeimage);
print(v, "%c colorspace: %i\n", c, f->fmt.pix.colorspace);
print(v, "%c priv: %i\n", c, f->fmt.pix.priv);
}
}
static void itd_vidioc_fmt(bool try, const char *s)
{
static const struct token_list list[] = {
{'t', TOKEN_F_ARG, "type", v4l2_buf_types},
{'w', TOKEN_F_ARG, "width", NULL},
{'h', TOKEN_F_ARG, "height", NULL},
{'p', TOKEN_F_ARG, "pixelformat", pixelformats},
{'f', TOKEN_F_ARG, "field", NULL},
{'b', TOKEN_F_ARG, "bytesperline", NULL},
{'s', TOKEN_F_ARG, "sizeimage", NULL},
{'c', TOKEN_F_ARG, "colorspace", NULL},
{'r', TOKEN_F_ARG, "priv", NULL},
TOKEN_END
};
struct v4l2_format p;
CLEAR(p);
p.type = vars.pipes[vars.pipe].reqbufs.type;
while (*s && *s != '?') {
int val[4];
switch (token_get(list, &s, val)) {
case 't':
p.type = val[0];
break;
case 'w':
p.fmt.pix.width = val[0];
break;