FATE: add 24-bit ALAC tests

[ffmpeg] / libavutil / pixdesc.h

diff --git a/libavutil/pixdesc.h b/libavutil/pixdesc.h
index cb75641058d0b01849d2d376c9a9d1e5504b4ecb..a944c66dd360b5a84c50836f0f3646b0b2137f60 100644 (file)
--- a/libavutil/pixdesc.h
+++ b/libavutil/pixdesc.h
@@ -23,6 +23,7 @@
 #define AVUTIL_PIXDESC_H
 
 #include <inttypes.h>
+#include "pixfmt.h"
 
 typedef struct AVComponentDescriptor{
     uint16_t plane        :2;            ///< which of the 4 planes contains the component
@@ -86,11 +87,21 @@ typedef struct AVPixFmtDescriptor{
 #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)
+/**
+ * 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
 
+#if FF_API_PIX_FMT_DESC
 /**
  * The array of all the pixel format descriptors.
  */
 extern const AVPixFmtDescriptor av_pix_fmt_descriptors[];
+#endif
 
 /**
  * Read a line from an image, and write the values of the
@@ -139,7 +150,15 @@ void av_write_image_line(const uint16_t *src, uint8_t *data[4], const int linesi
  *
  * Finally if no pixel format has been found, returns PIX_FMT_NONE.
  */
-enum PixelFormat av_get_pix_fmt(const char *name);
+enum AVPixelFormat av_get_pix_fmt(const char *name);
+
+/**
+ * Return the short name for a pixel format, NULL in case pix_fmt is
+ * unknown.
+ *
+ * @see av_get_pix_fmt(), av_get_pix_fmt_string()
+ */
+const char *av_get_pix_fmt_name(enum AVPixelFormat pix_fmt);
 
 /**
  * Print in buf the string corresponding to the pixel format with
@@ -151,7 +170,7 @@ enum PixelFormat av_get_pix_fmt(const char *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 PixelFormat 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
@@ -163,4 +182,39 @@ char *av_get_pix_fmt_string (char *buf, int buf_size, enum PixelFormat pix_fmt);
  */
 int av_get_bits_per_pixel(const AVPixFmtDescriptor *pixdesc);
 
+/**
+ * @return a pixel format descriptor for provided pixel format or NULL if
+ * this pixel format is unknown.
+ */
+const AVPixFmtDescriptor *av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt);
+
+/**
+ * Iterate over all pixel format descriptors known to libavutil.
+ *
+ * @param prev previous descriptor. NULL to get the first descriptor.
+ *
+ * @return next descriptor or NULL after the last descriptor
+ */
+const AVPixFmtDescriptor *av_pix_fmt_desc_next(const AVPixFmtDescriptor *prev);
+
+/**
+ * @return an AVPixelFormat id described by desc, or AV_PIX_FMT_NONE if desc
+ * is not a valid pointer to a pixel format descriptor.
+ */
+enum AVPixelFormat av_pix_fmt_desc_get_id(const AVPixFmtDescriptor *desc);
+
+/**
+ * Utility function to access log2_chroma_w log2_chroma_h from
+ * the pixel format AVPixFmtDescriptor.
+ *
+ * @param[in]  pix_fmt the pixel format
+ * @param[out] h_shift store log2_chroma_h
+ * @param[out] v_shift store log2_chroma_w
+ *
+ * @return 0 on success, AVERROR(ENOSYS) on invalid or unknown pixel format
+ */
+int av_pix_fmt_get_chroma_sub_sample(enum AVPixelFormat pix_fmt,
+                                     int *h_shift, int *v_shift);
+
+
 #endif /* AVUTIL_PIXDESC_H */