#define AVUTIL_PIXDESC_H
#include <inttypes.h>
+
+#include "attributes.h"
#include "pixfmt.h"
-typedef struct AVComponentDescriptor{
- uint16_t plane :2; ///< which of the 4 planes contains the component
+typedef struct AVComponentDescriptor {
+ /**
+ * Which of the 4 planes contains the component.
+ */
+ int plane;
/**
- * Number of elements between 2 horizontally consecutive pixels minus 1.
+ * Number of elements between 2 horizontally consecutive pixels.
* Elements are bits for bitstream formats, bytes otherwise.
*/
- uint16_t step_minus1 :3;
+ int step;
/**
- * Number of elements before the component of the first pixel plus 1.
+ * Number of elements before the component of the first pixel.
* Elements are bits for bitstream formats, bytes otherwise.
*/
- uint16_t offset_plus1 :3;
- uint16_t shift :3; ///< number of least significant bits that must be shifted away to get the value
- uint16_t depth_minus1 :4; ///< number of bits in the component minus 1
-}AVComponentDescriptor;
+ int offset;
+
+ /**
+ * Number of least significant bits that must be shifted away
+ * to get the value.
+ */
+ int shift;
+
+ /**
+ * Number of bits in the component.
+ */
+ int depth;
+
+#if FF_API_PLUS1_MINUS1
+ /** deprecated, use step instead */
+ attribute_deprecated int step_minus1;
+
+ /** deprecated, use depth instead */
+ attribute_deprecated int depth_minus1;
+
+ /** deprecated, use offset instead */
+ attribute_deprecated int offset_plus1;
+#endif
+} AVComponentDescriptor;
/**
* Descriptor that unambiguously describes how the bits of a pixel are
* and all the YUV variants) AVPixFmtDescriptor just stores how values
* are stored not what these values represent.
*/
-typedef struct AVPixFmtDescriptor{
+typedef struct AVPixFmtDescriptor {
const char *name;
- uint8_t nb_components; ///< The number of components each pixel has, (1-4)
+ uint8_t nb_components; ///< The number of components each pixel has, (1-4)
/**
* Amount to shift the luma width right to find the chroma width.
* The note above is needed to ensure rounding up.
* This value only refers to the chroma components.
*/
- uint8_t log2_chroma_w; ///< chroma_width = -((-luma_width )>>log2_chroma_w)
+ uint8_t log2_chroma_w; ///< chroma_width = -((-luma_width )>>log2_chroma_w)
/**
* Amount to shift the luma height right to find the chroma height.
* This value only refers to the chroma components.
*/
uint8_t log2_chroma_h;
- uint8_t flags;
+
+ /**
+ * Combination of AV_PIX_FMT_FLAG_... flags.
+ */
+ uint64_t flags;
/**
* Parameters that describe how pixels are packed. If the format
* comp[2].
*/
AVComponentDescriptor comp[4];
-}AVPixFmtDescriptor;
-#define PIX_FMT_BE 1 ///< Pixel format is big-endian.
-#define PIX_FMT_PAL 2 ///< Pixel format has a palette in data[1], values are indexes in this palette.
-#define PIX_FMT_BITSTREAM 4 ///< All values of a component are bit-wise packed end to end.
-#define PIX_FMT_HWACCEL 8 ///< Pixel format is an HW accelerated format.
-#define PIX_FMT_PLANAR 16 ///< At least one pixel component is not in the first data plane
-#define PIX_FMT_RGB 32 ///< The pixel format contains RGB-like data (as opposed to YUV/grayscale)
+ /**
+ * Alternative comma-separated names.
+ */
+ const char *alias;
+} AVPixFmtDescriptor;
+
+/**
+ * Pixel format is big-endian.
+ */
+#define AV_PIX_FMT_FLAG_BE (1 << 0)
+/**
+ * Pixel format has a palette in data[1], values are indexes in this palette.
+ */
+#define AV_PIX_FMT_FLAG_PAL (1 << 1)
+/**
+ * All values of a component are bit-wise packed end to end.
+ */
+#define AV_PIX_FMT_FLAG_BITSTREAM (1 << 2)
+/**
+ * Pixel format is an HW accelerated format.
+ */
+#define AV_PIX_FMT_FLAG_HWACCEL (1 << 3)
+/**
+ * At least one pixel component is not in the first data plane.
+ */
+#define AV_PIX_FMT_FLAG_PLANAR (1 << 4)
+/**
+ * The pixel format contains RGB-like data (as opposed to YUV/grayscale).
+ */
+#define AV_PIX_FMT_FLAG_RGB (1 << 5)
/**
* The pixel format is "pseudo-paletted". This means that Libav treats it as
* paletted internally, but the palette is generated by the decoder and is not
* stored in the file.
*/
-#define PIX_FMT_PSEUDOPAL 64
-
-#define PIX_FMT_ALPHA 128 ///< The pixel format has an alpha channel
-
-
-#if FF_API_PIX_FMT_DESC
+#define AV_PIX_FMT_FLAG_PSEUDOPAL (1 << 6)
/**
- * The array of all the pixel format descriptors.
+ * The pixel format has an alpha channel.
*/
-extern const AVPixFmtDescriptor av_pix_fmt_descriptors[];
-#endif
+#define AV_PIX_FMT_FLAG_ALPHA (1 << 7)
/**
* Read a line from an image, and write the values of the
* component c in data[1] to dst, rather than the palette indexes in
* data[0]. The behavior is undefined if the format is not paletted.
*/
-void av_read_image_line(uint16_t *dst, const uint8_t *data[4], const int linesize[4],
- const AVPixFmtDescriptor *desc, int x, int y, int c, int w, int read_pal_component);
+void av_read_image_line(uint16_t *dst, const uint8_t *data[4],
+ const int linesize[4], const AVPixFmtDescriptor *desc,
+ int x, int y, int c, int w, int read_pal_component);
/**
* Write the values from src to the pixel format component c of an
* @param w the width of the line to write, that is the number of
* values to write to the image line
*/
-void av_write_image_line(const uint16_t *src, uint8_t *data[4], const int linesize[4],
- const AVPixFmtDescriptor *desc, int x, int y, int c, int w);
+void av_write_image_line(const uint16_t *src, uint8_t *data[4],
+ const int linesize[4], const AVPixFmtDescriptor *desc,
+ int x, int y, int c, int w);
/**
* Return the pixel format corresponding to name.
* corresponding info string, or a negative value to print the
* corresponding header.
*/
-char *av_get_pix_fmt_string (char *buf, int buf_size, enum AVPixelFormat pix_fmt);
+char *av_get_pix_fmt_string(char *buf, int buf_size,
+ enum AVPixelFormat pix_fmt);
/**
* Return the number of bits per pixel used by the pixel format
- * described by pixdesc.
+ * described by pixdesc. Note that this is not the same as the number
+ * of bits per sample.
*
* The returned number of bits refers to the number of bits actually
* used for storing the pixel information, that is padding bits are
*/
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt);
+/**
+ * Utility function to swap the endianness of a pixel format.
+ *
+ * @param[in] pix_fmt the pixel format
+ *
+ * @return pixel format with swapped endianness if it exists,
+ * otherwise AV_PIX_FMT_NONE
+ */
+enum AVPixelFormat av_pix_fmt_swap_endianness(enum AVPixelFormat pix_fmt);
+
+/**
+ * @return the name for provided color range or NULL if unknown.
+ */
+const char *av_color_range_name(enum AVColorRange range);
+
+/**
+ * @return the name for provided color primaries or NULL if unknown.
+ */
+const char *av_color_primaries_name(enum AVColorPrimaries primaries);
+
+/**
+ * @return the name for provided color transfer or NULL if unknown.
+ */
+const char *av_color_transfer_name(enum AVColorTransferCharacteristic transfer);
+
+/**
+ * @return the name for provided color space or NULL if unknown.
+ */
+const char *av_color_space_name(enum AVColorSpace space);
+
+/**
+ * @return the name for provided chroma location or NULL if unknown.
+ */
+const char *av_chroma_location_name(enum AVChromaLocation location);
#endif /* AVUTIL_PIXDESC_H */
projects / ffmpeg / blobdiff