stereo3d.c 2.4 KB

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  1. /*
  2. * Copyright (c) 2013 Vittorio Giovara <vittorio.giovara@gmail.com>
  3. *
  4. * This file is part of FFmpeg.
  5. *
  6. * FFmpeg is free software; you can redistribute it and/or
  7. * modify it under the terms of the GNU Lesser General Public
  8. * License as published by the Free Software Foundation; either
  9. * version 2.1 of the License, or (at your option) any later version.
  10. *
  11. * FFmpeg is distributed in the hope that it will be useful,
  12. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14. * Lesser General Public License for more details.
  15. *
  16. * You should have received a copy of the GNU Lesser General Public
  17. * License along with FFmpeg; if not, write to the Free Software
  18. * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19. */
  20. #include <stdint.h>
  21. #include <string.h>
  22. #include "common.h"
  23. #include "mem.h"
  24. #include "stereo3d.h"
  25. AVStereo3D *av_stereo3d_alloc(void)
  26. {
  27. return av_mallocz(sizeof(AVStereo3D));
  28. }
  29. AVStereo3D *av_stereo3d_create_side_data(AVFrame *frame)
  30. {
  31. AVFrameSideData *side_data = av_frame_new_side_data(frame,
  32. AV_FRAME_DATA_STEREO3D,
  33. sizeof(AVStereo3D));
  34. if (!side_data)
  35. return NULL;
  36. memset(side_data->data, 0, sizeof(AVStereo3D));
  37. return (AVStereo3D *)side_data->data;
  38. }
  39. static const char * const stereo3d_type_names[] = {
  40. [AV_STEREO3D_2D] = "2D",
  41. [AV_STEREO3D_SIDEBYSIDE] = "side by side",
  42. [AV_STEREO3D_TOPBOTTOM] = "top and bottom",
  43. [AV_STEREO3D_FRAMESEQUENCE] = "frame alternate",
  44. [AV_STEREO3D_CHECKERBOARD] = "checkerboard",
  45. [AV_STEREO3D_SIDEBYSIDE_QUINCUNX] = "side by side (quincunx subsampling)",
  46. [AV_STEREO3D_LINES] = "interleaved lines",
  47. [AV_STEREO3D_COLUMNS] = "interleaved columns",
  48. };
  49. const char *av_stereo3d_type_name(unsigned int type)
  50. {
  51. if (type >= FF_ARRAY_ELEMS(stereo3d_type_names))
  52. return "unknown";
  53. return stereo3d_type_names[type];
  54. }
  55. int av_stereo3d_from_name(const char *name)
  56. {
  57. int i;
  58. for (i = 0; i < FF_ARRAY_ELEMS(stereo3d_type_names); i++) {
  59. size_t len = strlen(stereo3d_type_names[i]);
  60. if (!strncmp(stereo3d_type_names[i], name, len))
  61. return i;
  62. }
  63. return -1;
  64. }