Hi,
I'm encountering a problem in using some ffmpeg code in my Visual
Studio 2005 C++ project.
It's a syntax error: I have the PixFmtInfo struct declaration, and
after it I have the declaration and initialization of an array of
PixFmtInfo elements, but it seams that the visual c++ compiler doesn't
allow a declaration of an array in wich it is specified the element
position before the element initialization:
Here is the code of the struct declaration:
typedef struct PixFmtInfo {
const char *name;
uint8_t nb_channels; /**< number of channels (including alpha) */
uint8_t color_type; /**< color type (see FF_COLOR_xxx constants) */
uint8_t pixel_type; /**< pixel storage type (see FF_PIXEL_xxx
constants) */
uint8_t is_alpha : 1; /**< true if alpha can be specified */
uint8_t x_chroma_shift; /**< X chroma subsampling factor is 2 ^ shift */
uint8_t y_chroma_shift; /**< Y chroma subsampling factor is 2 ^ shift */
uint8_t depth; /**< bit depth of the color components */
} PixFmtInfo;
And here is the code of the array decl. and init.
The compiler founds a syntax error at the [ symbol of [PIX_FMT_YUV420P]
/* this table gives more information about formats */
static const PixFmtInfo pix_fmt_info[PIX_FMT_NB] = {
/* YUV formats */
[PIX_FMT_YUV420P] = {
.name = "yuv420p",
.nb_channels = 3,
.color_type = FF_COLOR_YUV,
.pixel_type = FF_PIXEL_PLANAR,
.depth = 8,
.x_chroma_shift = 1, .y_chroma_shift = 1,
},
[PIX_FMT_YUV422P] = {
.name = "yuv422p",
.nb_channels = 3,
.color_type = FF_COLOR_YUV,
.pixel_type = FF_PIXEL_PLANAR,
.depth = 8,
.x_chroma_shift = 1, .y_chroma_shift = 0,
},
[PIX_FMT_YUV444P] = {
.name = "yuv444p",
.nb_channels = 3,
.color_type = FF_COLOR_YUV,
.pixel_type = FF_PIXEL_PLANAR,
.depth = 8,
.x_chroma_shift = 0, .y_chroma_shift = 0,
},
[PIX_FMT_YUYV422] = {
.name = "yuyv422",
.nb_channels = 1,
.color_type = FF_COLOR_YUV,
.pixel_type = FF_PIXEL_PACKED,
.depth = 8,
.x_chroma_shift = 1, .y_chroma_shift = 0,
},
[PIX_FMT_UYVY422] = {
.name = "uyvy422",
.nb_channels = 1,
.color_type = FF_COLOR_YUV,
.pixel_type = FF_PIXEL_PACKED,
.depth = 8,
.x_chroma_shift = 1, .y_chroma_shift = 0,
},
[PIX_FMT_YUV410P] = {
.name = "yuv410p",
.nb_channels = 3,
.color_type = FF_COLOR_YUV,
.pixel_type = FF_PIXEL_PLANAR,
.depth = 8,
.x_chroma_shift = 2, .y_chroma_shift = 2,
},
[PIX_FMT_YUV411P] = {
.name = "yuv411p",
.nb_channels = 3,
.color_type = FF_COLOR_YUV,
.pixel_type = FF_PIXEL_PLANAR,
.depth = 8,
.x_chroma_shift = 2, .y_chroma_shift = 0,
},
[PIX_FMT_YUV440P] = {
.name = "yuv440p",
.nb_channels = 3,
.color_type = FF_COLOR_YUV,
.pixel_type = FF_PIXEL_PLANAR,
.depth = 8,
.x_chroma_shift = 0, .y_chroma_shift = 1,
},
/* YUV formats with alpha plane */
[PIX_FMT_YUVA420P] = {
.name = "yuva420p",
.nb_channels = 4,
.color_type = FF_COLOR_YUV,
.pixel_type = FF_PIXEL_PLANAR,
.depth = 8,
.x_chroma_shift = 1, .y_chroma_shift = 1,
},
/* JPEG YUV */
[PIX_FMT_YUVJ420P] = {
.name = "yuvj420p",
.nb_channels = 3,
.color_type = FF_COLOR_YUV_JPEG,
.pixel_type = FF_PIXEL_PLANAR,
.depth = 8,
.x_chroma_shift = 1, .y_chroma_shift = 1,
},
[PIX_FMT_YUVJ422P] = {
.name = "yuvj422p",
.nb_channels = 3,
.color_type = FF_COLOR_YUV_JPEG,
.pixel_type = FF_PIXEL_PLANAR,
.depth = 8,
.x_chroma_shift = 1, .y_chroma_shift = 0,
},
[PIX_FMT_YUVJ444P] = {
.name = "yuvj444p",
.nb_channels = 3,
.color_type = FF_COLOR_YUV_JPEG,
.pixel_type = FF_PIXEL_PLANAR,
.depth = 8,
.x_chroma_shift = 0, .y_chroma_shift = 0,
},
[PIX_FMT_YUVJ440P] = {
.name = "yuvj440p",
.nb_channels = 3,
.color_type = FF_COLOR_YUV_JPEG,
.pixel_type = FF_PIXEL_PLANAR,
.depth = 8,
.x_chroma_shift = 0, .y_chroma_shift = 1,
},
/* RGB formats */
[PIX_FMT_RGB24] = {
.name = "rgb24",
.nb_channels = 3,
.color_type = FF_COLOR_RGB,
.pixel_type = FF_PIXEL_PACKED,
.depth = 8,
.x_chroma_shift = 0, .y_chroma_shift = 0,
},
[PIX_FMT_BGR24] = {
.name = "bgr24",
.nb_channels = 3,
.color_type = FF_COLOR_RGB,
.pixel_type = FF_PIXEL_PACKED,
.depth = 8,
.x_chroma_shift = 0, .y_chroma_shift = 0,
},
[PIX_FMT_RGB32] = {
.name = "rgb32",
.nb_channels = 4, .is_alpha = 1,
.color_type = FF_COLOR_RGB,
.pixel_type = FF_PIXEL_PACKED,
.depth = 8,
.x_chroma_shift = 0, .y_chroma_shift = 0,
},
[PIX_FMT_RGB565] = {
.name = "rgb565",
.nb_channels = 3,
.color_type = FF_COLOR_RGB,
.pixel_type = FF_PIXEL_PACKED,
.depth = 5,
.x_chroma_shift = 0, .y_chroma_shift = 0,
},
[PIX_FMT_RGB555] = {
.name = "rgb555",
.nb_channels = 3,
.color_type = FF_COLOR_RGB,
.pixel_type = FF_PIXEL_PACKED,
.depth = 5,
.x_chroma_shift = 0, .y_chroma_shift = 0,
},
/* gray / mono formats */
[PIX_FMT_GRAY16BE] = {
.name = "gray16be",
.nb_channels = 1,
.color_type = FF_COLOR_GRAY,
.pixel_type = FF_PIXEL_PLANAR,
.depth = 16,
},
[PIX_FMT_GRAY16LE] = {
.name = "gray16le",
.nb_channels = 1,
.color_type = FF_COLOR_GRAY,
.pixel_type = FF_PIXEL_PLANAR,
.depth = 16,
},
[PIX_FMT_GRAY8] = {
.name = "gray",
.nb_channels = 1,
.color_type = FF_COLOR_GRAY,
.pixel_type = FF_PIXEL_PLANAR,
.depth = 8,
},
[PIX_FMT_MONOWHITE] = {
.name = "monow",
.nb_channels = 1,
.color_type = FF_COLOR_GRAY,
.pixel_type = FF_PIXEL_PLANAR,
.depth = 1,
},
[PIX_FMT_MONOBLACK] = {
.name = "monob",
.nb_channels = 1,
.color_type = FF_COLOR_GRAY,
.pixel_type = FF_PIXEL_PLANAR,
.depth = 1,
},
/* paletted formats */
[PIX_FMT_PAL8] = {
.name = "pal8",
.nb_channels = 4, .is_alpha = 1,
.color_type = FF_COLOR_RGB,
.pixel_type = FF_PIXEL_PALETTE,
.depth = 8,
},
[PIX_FMT_XVMC_MPEG2_MC] = {
.name = "xvmcmc",
},
[PIX_FMT_XVMC_MPEG2_IDCT] = {
.name = "xvmcidct",
},
[PIX_FMT_UYYVYY411] = {
.name = "uyyvyy411",
.nb_channels = 1,
.color_type = FF_COLOR_YUV,
.pixel_type = FF_PIXEL_PACKED,
.depth = 8,
.x_chroma_shift = 2, .y_chroma_shift = 0,
},
[PIX_FMT_BGR32] = {
.name = "bgr32",
.nb_channels = 4, .is_alpha = 1,
.color_type = FF_COLOR_RGB,
.pixel_type = FF_PIXEL_PACKED,
.depth = 8,
.x_chroma_shift = 0, .y_chroma_shift = 0,
},
[PIX_FMT_BGR565] = {
.name = "bgr565",
.nb_channels = 3,
.color_type = FF_COLOR_RGB,
.pixel_type = FF_PIXEL_PACKED,
.depth = 5,
.x_chroma_shift = 0, .y_chroma_shift = 0,
},
[PIX_FMT_BGR555] = {
.name = "bgr555",
.nb_channels = 3,
.color_type = FF_COLOR_RGB,
.pixel_type = FF_PIXEL_PACKED,
.depth = 5,
.x_chroma_shift = 0, .y_chroma_shift = 0,
},
[PIX_FMT_RGB8] = {
.name = "rgb8",
.nb_channels = 1,
.color_type = FF_COLOR_RGB,
.pixel_type = FF_PIXEL_PACKED,
.depth = 8,
.x_chroma_shift = 0, .y_chroma_shift = 0,
},
[PIX_FMT_RGB4] = {
.name = "rgb4",
.nb_channels = 1,
.color_type = FF_COLOR_RGB,
.pixel_type = FF_PIXEL_PACKED,
.depth = 4,
.x_chroma_shift = 0, .y_chroma_shift = 0,
},
[PIX_FMT_RGB4_BYTE] = {
.name = "rgb4_byte",
.nb_channels = 1,
.color_type = FF_COLOR_RGB,
.pixel_type = FF_PIXEL_PACKED,
.depth = 8,
.x_chroma_shift = 0, .y_chroma_shift = 0,
},
[PIX_FMT_BGR8] = {
.name = "bgr8",
.nb_channels = 1,
.color_type = FF_COLOR_RGB,
.pixel_type = FF_PIXEL_PACKED,
.depth = 8,
.x_chroma_shift = 0, .y_chroma_shift = 0,
},
[PIX_FMT_BGR4] = {
.name = "bgr4",
.nb_channels = 1,
.color_type = FF_COLOR_RGB,
.pixel_type = FF_PIXEL_PACKED,
.depth = 4,
.x_chroma_shift = 0, .y_chroma_shift = 0,
},
[PIX_FMT_BGR4_BYTE] = {
.name = "bgr4_byte",
.nb_channels = 1,
.color_type = FF_COLOR_RGB,
.pixel_type = FF_PIXEL_PACKED,
.depth = 8,
.x_chroma_shift = 0, .y_chroma_shift = 0,
},
[PIX_FMT_NV12] = {
.name = "nv12",
.nb_channels = 2,
.color_type = FF_COLOR_YUV,
.pixel_type = FF_PIXEL_PLANAR,
.depth = 8,
.x_chroma_shift = 1, .y_chroma_shift = 1,
},
[PIX_FMT_NV21] = {
.name = "nv12",
.nb_channels = 2,
.color_type = FF_COLOR_YUV,
.pixel_type = FF_PIXEL_PLANAR,
.depth = 8,
.x_chroma_shift = 1, .y_chroma_shift = 1,
},
[PIX_FMT_BGR32_1] = {
.name = "bgr32_1",
.nb_channels = 4, .is_alpha = 1,
.color_type = FF_COLOR_RGB,
.pixel_type = FF_PIXEL_PACKED,
.depth = 8,
.x_chroma_shift = 0, .y_chroma_shift = 0,
},
[PIX_FMT_RGB32_1] = {
.name = "rgb32_1",
.nb_channels = 4, .is_alpha = 1,
.color_type = FF_COLOR_RGB,
.pixel_type = FF_PIXEL_PACKED,
.depth = 8,
.x_chroma_shift = 0, .y_chroma_shift = 0,
},
};
--
Matteo Battaglio
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