1 files changed, 165 insertions, 0 deletions
diff --git a/code/test/vid/tools.c b/code/test/vid/tools.c
new file mode 100644
index 0000000..0307ef6
--- /dev/null
+++ b/code/test/vid/tools.c
@@ -0,0 +1,165 @@
+#include <stdio.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "tools.h"
+
+static const VpxInterface vpx_encoders[] = {
+  { "vp8", VP8_FOURCC, &vpx_codec_vp8_cx },
+  { "vp9", VP9_FOURCC, &vpx_codec_vp9_cx },
+};
+
+int get_vpx_encoder_count(void) {
+  return sizeof(vpx_encoders) / sizeof(vpx_encoders[0]);
+}
+
+const VpxInterface *get_vpx_encoder_by_index(int i) { return &vpx_encoders[i]; }
+
+const VpxInterface *get_vpx_encoder_by_name(const char *name) {
+  int i;
+
+  for (i = 0; i < get_vpx_encoder_count(); ++i) {
+    const VpxInterface *encoder = get_vpx_encoder_by_index(i);
+    if (strcmp(encoder->name, name) == 0) return encoder;
+  }
+
+  return NULL;
+}
+
+static const VpxInterface vpx_decoders[] = {
+  { "vp8", VP8_FOURCC, &vpx_codec_vp8_dx },
+  { "vp9", VP9_FOURCC, &vpx_codec_vp9_dx },
+};
+
+int get_vpx_decoder_count(void) {
+  return sizeof(vpx_decoders) / sizeof(vpx_decoders[0]);
+}
+
+const VpxInterface *get_vpx_decoder_by_index(int i) { return &vpx_decoders[i]; }
+
+const VpxInterface *get_vpx_decoder_by_name(const char *name) {
+  int i;
+
+  for (i = 0; i < get_vpx_decoder_count(); ++i) {
+    const VpxInterface *const decoder = get_vpx_decoder_by_index(i);
+    if (strcmp(decoder->name, name) == 0) return decoder;
+  }
+
+  return NULL;
+}
+
+void die_codec(vpx_codec_ctx_t *ctx, const char *s) {
+  if (ctx) {
+    const char *detail = vpx_codec_error_detail(ctx);
+
+    fprintf(stderr, "%s: %s\n", s, vpx_codec_error(ctx));
+    if (detail) fprintf(stderr, "    %s\n", detail);
+  } else {
+    fprintf(stderr, "%s", s);
+  }
+  exit(EXIT_FAILURE);
+}
+
+// TODO(dkovalev): move this function to vpx_image.{c, h}, so it will be part
+// of vpx_image_t support
+int vpx_img_plane_width(const vpx_image_t *img, int plane) {
+  if (plane > 0 && img->x_chroma_shift > 0)
+    return (img->d_w + 1) >> img->x_chroma_shift;
+  else
+    return img->d_w;
+}
+
+int vpx_img_plane_height(const vpx_image_t *img, int plane) {
+  if (plane > 0 && img->y_chroma_shift > 0)
+    return (img->d_h + 1) >> img->y_chroma_shift;
+  else
+    return img->d_h;
+}
+
+int vpx_img_read(vpx_image_t *img, void *img_buf, int sz) {
+  int plane;
+  int off = 0;
+
+  for (plane = 0; plane < 3; ++plane) {
+    unsigned char *buf = img->planes[plane];
+    const int stride = img->stride[plane];
+    const int w = vpx_img_plane_width(img, plane) *
+                  ((img->fmt & VPX_IMG_FMT_HIGHBITDEPTH) ? 2 : 1);
+    const int h = vpx_img_plane_height(img, plane);
+    int y;
+
+    for (y = 0; y < h; ++y) {
+      if (off + w > sz) return 0;
+      memcpy(buf, img_buf + off, w);
+      off += w;
+      buf += stride;
+    }
+  }
+
+  return 1;
+}
+
+int vpx_img_write(const vpx_image_t *img, void *img_buf, int sz) {
+  int plane;
+  int off = 0;
+
+  for (plane = 0; plane < 3; ++plane) {
+    const unsigned char *buf = img->planes[plane];
+    const int stride = img->stride[plane];
+    const int w = vpx_img_plane_width(img, plane) *
+                  ((img->fmt & VPX_IMG_FMT_HIGHBITDEPTH) ? 2 : 1);
+    const int h = vpx_img_plane_height(img, plane);
+    int y;
+
+    for (y = 0; y < h; ++y) {
+      if (off + w > sz) return 0;
+      memcpy(img_buf + off, buf, w);
+      off += w;
+      buf += stride;
+    }
+  }
+  
+  return 1;
+}
+
+int vpx_img_read_f(vpx_image_t *img, FILE *file) {
+  int plane;
+
+  for (plane = 0; plane < 3; ++plane) {
+    unsigned char *buf = img->planes[plane];
+    const int stride = img->stride[plane];
+    const int w = vpx_img_plane_width(img, plane) *
+                  ((img->fmt & VPX_IMG_FMT_HIGHBITDEPTH) ? 2 : 1);
+    const int h = vpx_img_plane_height(img, plane);
+    int y;
+
+    for (y = 0; y < h; ++y) {
+      if (fread(buf, 1, w, file) != (size_t)w) return 0;
+      buf += stride;
+    }
+  }
+
+  return 1;
+}
+
+int vpx_img_write_f(const vpx_image_t *img, FILE *file) {
+  int plane;
+
+  for (plane = 0; plane < 3; ++plane) {
+    const unsigned char *buf = img->planes[plane];
+    const int stride = img->stride[plane];
+    const int w = vpx_img_plane_width(img, plane) *
+                  ((img->fmt & VPX_IMG_FMT_HIGHBITDEPTH) ? 2 : 1);
+    const int h = vpx_img_plane_height(img, plane);
+    int y;
+
+    for (y = 0; y < h; ++y) {
+      if (fwrite(buf, 1, w, file) != (size_t)w) return 0;
+      buf += stride;
+    }
+  }
+  
+  return 1;
+}
+