diff options
Diffstat (limited to 'wcap/main.c')
-rw-r--r-- | wcap/main.c | 304 |
1 files changed, 304 insertions, 0 deletions
diff --git a/wcap/main.c b/wcap/main.c new file mode 100644 index 00000000..1e4605ae --- /dev/null +++ b/wcap/main.c @@ -0,0 +1,304 @@ +/* + * Copyright © 2012 Intel Corporation + * + * Permission to use, copy, modify, distribute, and sell this software and + * its documentation for any purpose is hereby granted without fee, provided + * that the above copyright notice appear in all copies and that both that + * copyright notice and this permission notice appear in supporting + * documentation, and that the name of the copyright holders not be used in + * advertising or publicity pertaining to distribution of the software + * without specific, written prior permission. The copyright holders make + * no representations about the suitability of this software for any + * purpose. It is provided "as is" without express or implied warranty. + * + * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS + * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY + * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER + * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF + * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <config.h> + +#include <stdlib.h> +#include <stdio.h> +#include <stdint.h> +#include <sys/mman.h> +#include <sys/mman.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <unistd.h> +#include <string.h> +#include <fcntl.h> +#include <assert.h> + +#include <cairo.h> + +#include "wcap-decode.h" + +static void +write_png(struct wcap_decoder *decoder, const char *filename) +{ + cairo_surface_t *surface; + + surface = cairo_image_surface_create_for_data((unsigned char *) decoder->frame, + CAIRO_FORMAT_ARGB32, + decoder->width, + decoder->height, + decoder->width * 4); + cairo_surface_write_to_png(surface, filename); + cairo_surface_destroy(surface); +} + +static inline int +rgb_to_yuv(uint32_t format, uint32_t p, int *u, int *v) +{ + int r, g, b, y; + + switch (format) { + case WCAP_FORMAT_XRGB8888: + r = (p >> 16) & 0xff; + g = (p >> 8) & 0xff; + b = (p >> 0) & 0xff; + break; + case WCAP_FORMAT_XBGR8888: + r = (p >> 0) & 0xff; + g = (p >> 8) & 0xff; + b = (p >> 16) & 0xff; + break; + default: + assert(0); + } + + y = (19595 * r + 38469 * g + 7472 * b) >> 16; + if (y > 255) + y = 255; + + *u += 46727 * (r - y); + *v += 36962 * (b - y); + + return y; +} + +static inline +int clamp_uv(int u) +{ + int clamp = (u >> 18) + 128; + + if (clamp < 0) + return 0; + else if (clamp > 255) + return 255; + else + return clamp; +} + +static void +convert_to_yv12(struct wcap_decoder *decoder, unsigned char *out) +{ + unsigned char *y1, *y2, *u, *v; + uint32_t *p1, *p2, *end; + int i, u_accum, v_accum, stride0, stride1; + uint32_t format = decoder->format; + + stride0 = decoder->width; + stride1 = decoder->width / 2; + for (i = 0; i < decoder->height; i += 2) { + y1 = out + stride0 * i; + y2 = y1 + stride0; + v = out + stride0 * decoder->height + stride1 * i / 2; + u = v + stride1 * decoder->height / 2; + p1 = decoder->frame + decoder->width * i; + p2 = p1 + decoder->width; + end = p1 + decoder->width; + + while (p1 < end) { + u_accum = 0; + v_accum = 0; + y1[0] = rgb_to_yuv(format, p1[0], &u_accum, &v_accum); + y1[1] = rgb_to_yuv(format, p1[1], &u_accum, &v_accum); + y2[0] = rgb_to_yuv(format, p2[0], &u_accum, &v_accum); + y2[1] = rgb_to_yuv(format, p2[1], &u_accum, &v_accum); + u[0] = clamp_uv(u_accum); + v[0] = clamp_uv(v_accum); + + y1 += 2; + p1 += 2; + y2 += 2; + p2 += 2; + u++; + v++; + } + } +} + +static void +convert_to_yuv444(struct wcap_decoder *decoder, unsigned char *out) +{ + + unsigned char *yp, *up, *vp; + uint32_t *rp, *end; + int u, v; + int i, stride, psize; + uint32_t format = decoder->format; + + stride = decoder->width; + psize = stride * decoder->height; + for (i = 0; i < decoder->height; i++) { + yp = out + stride * i; + up = yp + (psize * 2); + vp = yp + (psize * 1); + rp = decoder->frame + decoder->width * i; + end = rp + decoder->width; + while (rp < end) { + u = 0; + v = 0; + yp[0] = rgb_to_yuv(format, rp[0], &u, &v); + up[0] = clamp_uv(u/.3); + vp[0] = clamp_uv(v/.3); + up++; + vp++; + yp++; + rp++; + } + } +} + +static void +output_yuv_frame(struct wcap_decoder *decoder, int depth) +{ + static unsigned char *out; + int size; + + if (depth == 444) { + size = decoder->width * decoder->height * 3; + } else { + size = decoder->width * decoder->height * 3 / 2; + } + if (out == NULL) + out = malloc(size); + + if (depth == 444) { + convert_to_yuv444(decoder, out); + } else { + convert_to_yv12(decoder, out); + } + + printf("FRAME\n"); + fwrite(out, 1, size, stdout); +} + +static void +usage(int exit_code) +{ + fprintf(stderr, "usage: wcap-decode " + "[--help] [--yuv4mpeg2] [--frame=<frame>] [--all] \n" + "\t[--rate=<num:denom>] <wcap file>\n\n" + "\t--help\t\t\tthis help text\n" + "\t--yuv4mpeg2\t\tdump wcap file to stdout in yuv4mpeg2 format\n" + "\t--yuv4mpeg2-444\t\tdump wcap file to stdout in yuv4mpeg2 444 format\n" + "\t--frame=<frame>\t\twrite out the given frame number as png\n" + "\t--all\t\t\twrite all frames as pngs\n" + "\t--rate=<num:denom>\treplay frame rate for yuv4mpeg2,\n" + "\t\t\t\tspecified as an integer fraction\n\n"); + + exit(exit_code); +} + +int main(int argc, char *argv[]) +{ + struct wcap_decoder *decoder; + int i, j, output_frame = -1, yuv4mpeg2 = 0, all = 0, has_frame; + int num = 30, denom = 1; + char filename[200]; + char *mode; + uint32_t msecs, frame_time, *frame, frame_size; + + for (i = 1, j = 1; i < argc; i++) { + if (strcmp(argv[i], "--yuv4mpeg2-444") == 0) { + yuv4mpeg2 = 444; + } else if (strcmp(argv[i], "--yuv4mpeg2") == 0) { + yuv4mpeg2 = 420; + } else if (strcmp(argv[i], "--help") == 0) { + usage(EXIT_SUCCESS); + } else if (strcmp(argv[i], "--all") == 0) { + all = 1; + } else if (sscanf(argv[i], "--frame=%d", &output_frame) == 1) { + ; + } else if (sscanf(argv[i], "--rate=%d", &num) == 1) { + ; + } else if (sscanf(argv[i], "--rate=%d:%d", &num, &denom) == 2) { + ; + } else if (strcmp(argv[i], "--") == 0) { + break; + } else if (argv[i][0] == '-') { + fprintf(stderr, + "unknown option or invalid argument: %s\n", argv[i]); + usage(EXIT_FAILURE); + } else { + argv[j++] = argv[i]; + } + } + argc = j; + + if (argc != 2) + usage(EXIT_FAILURE); + if (denom == 0) { + fprintf(stderr, "invalid rate, denom can not be 0\n"); + exit(EXIT_FAILURE); + } + + decoder = wcap_decoder_create(argv[1]); + + if (yuv4mpeg2 && isatty(1)) { + fprintf(stderr, "Not dumping yuv4mpeg2 data to terminal. Pipe output to a file or a process.\n"); + fprintf(stderr, "For example, to encode to webm, use something like\n\n"); + fprintf(stderr, "\t$ wcap-decode --yuv4mpeg2 ../capture.wcap |\n" + "\t\tvpxenc --target-bitrate=1024 --best -t 4 -o foo.webm -\n\n"); + + exit(EXIT_FAILURE); + } + + if (yuv4mpeg2) { + if (yuv4mpeg2 == 444) { + mode = "C444"; + } else { + mode = "C420jpeg"; + } + printf("YUV4MPEG2 %s W%d H%d F%d:%d Ip A0:0\n", + mode, decoder->width, decoder->height, num, denom); + fflush(stdout); + } + + i = 0; + has_frame = wcap_decoder_get_frame(decoder); + msecs = decoder->msecs; + frame_time = 1000 * denom / num; + frame_size = decoder->width * decoder->height * 4; + frame = malloc(frame_size); + while (has_frame) { + if (decoder->msecs >= msecs) + memcpy(frame, decoder->frame, frame_size); + if (all || i == output_frame) { + snprintf(filename, sizeof filename, + "wcap-frame-%d.png", i); + write_png(decoder, filename); + fprintf(stderr, "wrote %s\n", filename); + } + if (yuv4mpeg2) + output_yuv_frame(decoder, yuv4mpeg2); + i++; + msecs += frame_time; + while (decoder->msecs < msecs && has_frame) + has_frame = wcap_decoder_get_frame(decoder); + } + + fprintf(stderr, "wcap file: size %dx%d, %d frames\n", + decoder->width, decoder->height, i); + + wcap_decoder_destroy(decoder); + + return EXIT_SUCCESS; +} |