FFmpeg: libavfilter/vidstabutils.c Source File

FFmpeg

[フレーム]

libavfilter

vidstabutils.c

Go to the documentation of this file.

1 /*

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 */

21 #include "vidstabutils.h"

23 /** convert AV's pixelformat to vid.stab pixelformat */

24 VSPixelFormat av_2_vs_pixel_format(AVFilterContext *ctx, enum AVPixelFormat pf)

25 {

26 switch (pf) {

27 case AV_PIX_FMT_YUV420P: return PF_YUV420P;

28 case AV_PIX_FMT_YUV422P: return PF_YUV422P;

29 case AV_PIX_FMT_YUV444P: return PF_YUV444P;

30 case AV_PIX_FMT_YUV410P: return PF_YUV410P;

31 case AV_PIX_FMT_YUV411P: return PF_YUV411P;

32 case AV_PIX_FMT_YUV440P: return PF_YUV440P;

33 case AV_PIX_FMT_YUVA420P: return PF_YUVA420P;

34 case AV_PIX_FMT_GRAY8: return PF_GRAY8;

35 case AV_PIX_FMT_RGB24: return PF_RGB24;

36 case AV_PIX_FMT_BGR24: return PF_BGR24;

37 case AV_PIX_FMT_RGBA: return PF_RGBA;

38 default:

39 av_log(ctx, AV_LOG_ERROR, "cannot deal with pixel format %i\n", pf);

40 return PF_NONE;

41 }

42 }

44 /** struct to hold a valid context for logging from within vid.stab lib */

45 typedef struct {

46 const AVClass *class;

47 } VS2AVLogCtx;

49 /** wrapper to log vs_log into av_log */

50 static int vs_2_av_log_wrapper(int type, const char *tag, const char *format, ...)

51 {

52 va_list ap;

53 VS2AVLogCtx ctx;

54 AVClass class = {

55 .class_name = tag,

56 .item_name = av_default_item_name,

57 .option = 0,

58 .version = LIBAVUTIL_VERSION_INT,

59 .category = AV_CLASS_CATEGORY_FILTER,

60 };

61 ctx.class = &class;

62 va_start(ap, format);

63 av_vlog(&ctx, type, format, ap);

64 va_end(ap);

65 return VS_OK;

66 }

68 /** sets the memory allocation function and logging constants to av versions */

69 void vs_set_mem_and_log_functions(void)

70 {

71 vs_malloc = av_malloc;

72 vs_zalloc = av_mallocz;

73 vs_realloc = av_realloc;

74 vs_free = av_free;

76 VS_ERROR_TYPE = AV_LOG_ERROR;

77 VS_WARN_TYPE = AV_LOG_WARNING;

78 VS_INFO_TYPE = AV_LOG_INFO;

79 VS_MSG_TYPE = AV_LOG_VERBOSE;

81 vs_log = vs_2_av_log_wrapper;

83 VS_ERROR = 0;

84 VS_OK = 1;

85 }

Generated on Sat Jan 25 2014 19:52:01 for FFmpeg by doxygen 1.8.2