--- /dev/null
+/*********************************************************************
+* Software License Agreement (BSD License)
+*
+* Copyright (C) 2010-2012 Ken Tossell
+* All rights reserved.
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions
+* are met:
+*
+* * Redistributions of source code must retain the above copyright
+* notice, this list of conditions and the following disclaimer.
+* * Redistributions in binary form must reproduce the above
+* copyright notice, this list of conditions and the following
+* disclaimer in the documentation and/or other materials provided
+* with the distribution.
+* * Neither the name of the author nor other contributors may be
+* used to endorse or promote products derived from this software
+* without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+* POSSIBILITY OF SUCH DAMAGE.
+*********************************************************************/
+/**
+ * @defgroup frame Frame processing
+ */
+#include "libuvc/libuvc.h"
+#include "libuvc/libuvc_internal.h"
+
+/** @internal */
+uvc_error_t uvc_ensure_frame_size(uvc_frame_t *frame, size_t need_bytes) {
+ if (frame->library_owns_data) {
+ if (!frame->data || frame->data_bytes != need_bytes) {
+ frame->data_bytes = need_bytes;
+ frame->data = realloc(frame->data, frame->data_bytes);
+ }
+ if (!frame->data)
+ return UVC_ERROR_NO_MEM;
+ return UVC_SUCCESS;
+ } else {
+ if (!frame->data || frame->data_bytes < need_bytes)
+ return UVC_ERROR_NO_MEM;
+ return UVC_SUCCESS;
+ }
+}
+
+/** @brief Allocate a frame structure
+ * @ingroup frame
+ *
+ * @param data_bytes Number of bytes to allocate, or zero
+ * @return New frame, or NULL on error
+ */
+uvc_frame_t *uvc_allocate_frame(size_t data_bytes) {
+ uvc_frame_t *frame = malloc(sizeof(*frame));
+
+ if (!frame)
+ return NULL;
+
+ bzero(frame, sizeof(*frame));
+
+ frame->library_owns_data = 1;
+
+ if (data_bytes > 0) {
+ frame->data_bytes = data_bytes;
+ frame->data = malloc(data_bytes);
+
+ if (!frame->data) {
+ free(frame);
+ return NULL;
+ }
+ }
+
+ return frame;
+}
+
+/** @brief Free a frame structure
+ * @ingroup frame
+ *
+ * @param frame Frame to destroy
+ */
+void uvc_free_frame(uvc_frame_t *frame) {
+ if (frame->data_bytes > 0 && frame->library_owns_data)
+ free(frame->data);
+
+ free(frame);
+}
+
+static inline unsigned char sat(int i) {
+ return (unsigned char)( i >= 255 ? 255 : (i < 0 ? 0 : i));
+}
+
+/** @brief Duplicate a frame, preserving color format
+ * @ingroup frame
+ *
+ * @param in Original frame
+ * @param out Duplicate frame
+ */
+uvc_error_t uvc_duplicate_frame(uvc_frame_t *in, uvc_frame_t *out) {
+ if (uvc_ensure_frame_size(out, in->data_bytes) < 0)
+ return UVC_ERROR_NO_MEM;
+
+ out->width = in->width;
+ out->height = in->height;
+ out->frame_format = in->frame_format;
+ out->step = in->step;
+ out->sequence = in->sequence;
+ out->capture_time = in->capture_time;
+ out->source = in->source;
+
+ memcpy(out->data, in->data, in->data_bytes);
+
+ return UVC_SUCCESS;
+}
+
+#define YUYV2RGB_2(pyuv, prgb) { \
+ float r = 1.402f * ((pyuv)[3]-128); \
+ float g = -0.34414f * ((pyuv)[1]-128) - 0.71414f * ((pyuv)[3]-128); \
+ float b = 1.772f * ((pyuv)[1]-128); \
+ (prgb)[0] = sat(pyuv[0] + r); \
+ (prgb)[1] = sat(pyuv[0] + g); \
+ (prgb)[2] = sat(pyuv[0] + b); \
+ (prgb)[3] = sat(pyuv[2] + r); \
+ (prgb)[4] = sat(pyuv[2] + g); \
+ (prgb)[5] = sat(pyuv[2] + b); \
+ }
+#define IYUYV2RGB_2(pyuv, prgb) { \
+ int r = (22987 * ((pyuv)[3] - 128)) >> 14; \
+ int g = (-5636 * ((pyuv)[1] - 128) - 11698 * ((pyuv)[3] - 128)) >> 14; \
+ int b = (29049 * ((pyuv)[1] - 128)) >> 14; \
+ (prgb)[0] = sat(*(pyuv) + r); \
+ (prgb)[1] = sat(*(pyuv) + g); \
+ (prgb)[2] = sat(*(pyuv) + b); \
+ (prgb)[3] = sat((pyuv)[2] + r); \
+ (prgb)[4] = sat((pyuv)[2] + g); \
+ (prgb)[5] = sat((pyuv)[2] + b); \
+ }
+#define IYUYV2RGB_16(pyuv, prgb) IYUYV2RGB_8(pyuv, prgb); IYUYV2RGB_8(pyuv + 16, prgb + 24);
+#define IYUYV2RGB_8(pyuv, prgb) IYUYV2RGB_4(pyuv, prgb); IYUYV2RGB_4(pyuv + 8, prgb + 12);
+#define IYUYV2RGB_4(pyuv, prgb) IYUYV2RGB_2(pyuv, prgb); IYUYV2RGB_2(pyuv + 4, prgb + 6);
+
+/** @brief Convert a frame from YUYV to RGB
+ * @ingroup frame
+ *
+ * @param in YUYV frame
+ * @param out RGB frame
+ */
+uvc_error_t uvc_yuyv2rgb(uvc_frame_t *in, uvc_frame_t *out) {
+ if (in->frame_format != UVC_FRAME_FORMAT_YUYV)
+ return UVC_ERROR_INVALID_PARAM;
+
+ if (uvc_ensure_frame_size(out, in->width * in->height * 3) < 0)
+ return UVC_ERROR_NO_MEM;
+
+ out->width = in->width;
+ out->height = in->height;
+ out->frame_format = UVC_FRAME_FORMAT_RGB;
+ out->step = in->width * 3;
+ out->sequence = in->sequence;
+ out->capture_time = in->capture_time;
+ out->source = in->source;
+
+ uint8_t *pyuv = in->data;
+ uint8_t *prgb = out->data;
+ uint8_t *prgb_end = prgb + out->data_bytes;
+
+ while (prgb < prgb_end) {
+ IYUYV2RGB_8(pyuv, prgb);
+
+ prgb += 3 * 8;
+ pyuv += 2 * 8;
+ }
+
+ return UVC_SUCCESS;
+}
+
+#define IYUYV2BGR_2(pyuv, pbgr) { \
+ int r = (22987 * ((pyuv)[3] - 128)) >> 14; \
+ int g = (-5636 * ((pyuv)[1] - 128) - 11698 * ((pyuv)[3] - 128)) >> 14; \
+ int b = (29049 * ((pyuv)[1] - 128)) >> 14; \
+ (pbgr)[0] = sat(*(pyuv) + b); \
+ (pbgr)[1] = sat(*(pyuv) + g); \
+ (pbgr)[2] = sat(*(pyuv) + r); \
+ (pbgr)[3] = sat((pyuv)[2] + b); \
+ (pbgr)[4] = sat((pyuv)[2] + g); \
+ (pbgr)[5] = sat((pyuv)[2] + r); \
+ }
+#define IYUYV2BGR_16(pyuv, pbgr) IYUYV2BGR_8(pyuv, pbgr); IYUYV2BGR_8(pyuv + 16, pbgr + 24);
+#define IYUYV2BGR_8(pyuv, pbgr) IYUYV2BGR_4(pyuv, pbgr); IYUYV2BGR_4(pyuv + 8, pbgr + 12);
+#define IYUYV2BGR_4(pyuv, pbgr) IYUYV2BGR_2(pyuv, pbgr); IYUYV2BGR_2(pyuv + 4, pbgr + 6);
+
+/** @brief Convert a frame from YUYV to BGR
+ * @ingroup frame
+ *
+ * @param in YUYV frame
+ * @param out BGR frame
+ */
+uvc_error_t uvc_yuyv2bgr(uvc_frame_t *in, uvc_frame_t *out) {
+ if (in->frame_format != UVC_FRAME_FORMAT_YUYV)
+ return UVC_ERROR_INVALID_PARAM;
+
+ if (uvc_ensure_frame_size(out, in->width * in->height * 3) < 0)
+ return UVC_ERROR_NO_MEM;
+
+ out->width = in->width;
+ out->height = in->height;
+ out->frame_format = UVC_FRAME_FORMAT_BGR;
+ out->step = in->width * 3;
+ out->sequence = in->sequence;
+ out->capture_time = in->capture_time;
+ out->source = in->source;
+
+ uint8_t *pyuv = in->data;
+ uint8_t *pbgr = out->data;
+ uint8_t *pbgr_end = pbgr + out->data_bytes;
+
+ while (pbgr < pbgr_end) {
+ IYUYV2BGR_8(pyuv, pbgr);
+
+ pbgr += 3 * 8;
+ pyuv += 2 * 8;
+ }
+
+ return UVC_SUCCESS;
+}
+
+#define IUYVY2RGB_2(pyuv, prgb) { \
+ int r = (22987 * ((pyuv)[2] - 128)) >> 14; \
+ int g = (-5636 * ((pyuv)[0] - 128) - 11698 * ((pyuv)[2] - 128)) >> 14; \
+ int b = (29049 * ((pyuv)[0] - 128)) >> 14; \
+ (prgb)[0] = sat((pyuv)[1] + r); \
+ (prgb)[1] = sat((pyuv)[1] + g); \
+ (prgb)[2] = sat((pyuv)[1] + b); \
+ (prgb)[3] = sat((pyuv)[3] + r); \
+ (prgb)[4] = sat((pyuv)[3] + g); \
+ (prgb)[5] = sat((pyuv)[3] + b); \
+ }
+#define IUYVY2RGB_16(pyuv, prgb) IUYVY2RGB_8(pyuv, prgb); IUYVY2RGB_8(pyuv + 16, prgb + 24);
+#define IUYVY2RGB_8(pyuv, prgb) IUYVY2RGB_4(pyuv, prgb); IUYVY2RGB_4(pyuv + 8, prgb + 12);
+#define IUYVY2RGB_4(pyuv, prgb) IUYVY2RGB_2(pyuv, prgb); IUYVY2RGB_2(pyuv + 4, prgb + 6);
+
+/** @brief Convert a frame from UYVY to RGB
+ * @ingroup frame
+ * @param ini UYVY frame
+ * @param out RGB frame
+ */
+uvc_error_t uvc_uyvy2rgb(uvc_frame_t *in, uvc_frame_t *out) {
+ if (in->frame_format != UVC_FRAME_FORMAT_UYVY)
+ return UVC_ERROR_INVALID_PARAM;
+
+ if (uvc_ensure_frame_size(out, in->width * in->height * 3) < 0)
+ return UVC_ERROR_NO_MEM;
+
+ out->width = in->width;
+ out->height = in->height;
+ out->frame_format = UVC_FRAME_FORMAT_RGB;
+ out->step = in->width *3;
+ out->sequence = in->sequence;
+ out->capture_time = in->capture_time;
+ out->source = in->source;
+
+ uint8_t *pyuv = in->data;
+ uint8_t *prgb = out->data;
+ uint8_t *prgb_end = prgb + out->data_bytes;
+
+ while (prgb < prgb_end) {
+ IUYVY2RGB_8(pyuv, prgb);
+
+ prgb += 3 * 8;
+ pyuv += 2 * 8;
+ }
+
+ return UVC_SUCCESS;
+}
+
+#define IUYVY2BGR_2(pyuv, pbgr) { \
+ int r = (22987 * ((pyuv)[2] - 128)) >> 14; \
+ int g = (-5636 * ((pyuv)[0] - 128) - 11698 * ((pyuv)[2] - 128)) >> 14; \
+ int b = (29049 * ((pyuv)[0] - 128)) >> 14; \
+ (pbgr)[0] = sat((pyuv)[1] + b); \
+ (pbgr)[1] = sat((pyuv)[1] + g); \
+ (pbgr)[2] = sat((pyuv)[1] + r); \
+ (pbgr)[3] = sat((pyuv)[3] + b); \
+ (pbgr)[4] = sat((pyuv)[3] + g); \
+ (pbgr)[5] = sat((pyuv)[3] + r); \
+ }
+#define IUYVY2BGR_16(pyuv, pbgr) IUYVY2BGR_8(pyuv, pbgr); IUYVY2BGR_8(pyuv + 16, pbgr + 24);
+#define IUYVY2BGR_8(pyuv, pbgr) IUYVY2BGR_4(pyuv, pbgr); IUYVY2BGR_4(pyuv + 8, pbgr + 12);
+#define IUYVY2BGR_4(pyuv, pbgr) IUYVY2BGR_2(pyuv, pbgr); IUYVY2BGR_2(pyuv + 4, pbgr + 6);
+
+/** @brief Convert a frame from UYVY to BGR
+ * @ingroup frame
+ * @param ini UYVY frame
+ * @param out BGR frame
+ */
+uvc_error_t uvc_uyvy2bgr(uvc_frame_t *in, uvc_frame_t *out) {
+ if (in->frame_format != UVC_FRAME_FORMAT_UYVY)
+ return UVC_ERROR_INVALID_PARAM;
+
+ if (uvc_ensure_frame_size(out, in->width * in->height * 3) < 0)
+ return UVC_ERROR_NO_MEM;
+
+ out->width = in->width;
+ out->height = in->height;
+ out->frame_format = UVC_FRAME_FORMAT_BGR;
+ out->step = in->width *3;
+ out->sequence = in->sequence;
+ out->capture_time = in->capture_time;
+ out->source = in->source;
+
+ uint8_t *pyuv = in->data;
+ uint8_t *pbgr = out->data;
+ uint8_t *pbgr_end = pbgr + out->data_bytes;
+
+ while (pbgr < pbgr_end) {
+ IUYVY2BGR_8(pyuv, pbgr);
+
+ pbgr += 3 * 8;
+ pyuv += 2 * 8;
+ }
+
+ return UVC_SUCCESS;
+}
+
+/** @brief Convert a frame to RGB
+ * @ingroup frame
+ *
+ * @param in non-RGB frame
+ * @param out RGB frame
+ */
+uvc_error_t uvc_any2rgb(uvc_frame_t *in, uvc_frame_t *out) {
+ switch (in->frame_format) {
+ case UVC_FRAME_FORMAT_YUYV:
+ return uvc_yuyv2rgb(in, out);
+ case UVC_FRAME_FORMAT_UYVY:
+ return uvc_uyvy2rgb(in, out);
+ case UVC_FRAME_FORMAT_RGB:
+ return uvc_duplicate_frame(in, out);
+ default:
+ return UVC_ERROR_NOT_SUPPORTED;
+ }
+}
+
+/** @brief Convert a frame to BGR
+ * @ingroup frame
+ *
+ * @param in non-BGR frame
+ * @param out BGR frame
+ */
+uvc_error_t uvc_any2bgr(uvc_frame_t *in, uvc_frame_t *out) {
+ switch (in->frame_format) {
+ case UVC_FRAME_FORMAT_YUYV:
+ return uvc_yuyv2bgr(in, out);
+ case UVC_FRAME_FORMAT_UYVY:
+ return uvc_uyvy2bgr(in, out);
+ case UVC_FRAME_FORMAT_BGR:
+ return uvc_duplicate_frame(in, out);
+ default:
+ return UVC_ERROR_NOT_SUPPORTED;
+ }
+}
projects / rtmpclient.git / blobdiff