From c977dab4562f5ee1324a971d396a997baf341383 Mon Sep 17 00:00:00 2001 From: reimar Date: Wed, 1 Dec 2004 17:05:58 +0000 Subject: More similar code from gl and gl2 moved to gl_common git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@14079 b3059339-0415-0410-9bf9-f77b7e298cf2 --- libvo/gl_common.c | 161 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 161 insertions(+) (limited to 'libvo/gl_common.c') diff --git a/libvo/gl_common.c b/libvo/gl_common.c index 7c82c74076..3526195618 100644 --- a/libvo/gl_common.c +++ b/libvo/gl_common.c @@ -17,6 +17,167 @@ void glAdjustAlignment(int stride) { glPixelStorei (GL_UNPACK_ALIGNMENT, gl_alignment); } +#include "img_format.h" + +struct gl_name_map_struct { + GLint value; + char *name; +}; + +#undef MAP +#define MAP(a) {a, #a} +static const struct gl_name_map_struct gl_name_map[] = { + // internal format + MAP(GL_R3_G3_B2), MAP(GL_RGB4), MAP(GL_RGB5), MAP(GL_RGB8), + MAP(GL_RGB10), MAP(GL_RGB12), MAP(GL_RGB16), MAP(GL_RGBA2), + MAP(GL_RGBA4), MAP(GL_RGB5_A1), MAP(GL_RGBA8), MAP(GL_RGB10_A2), + MAP(GL_RGBA12), MAP(GL_RGBA16), MAP(GL_LUMINANCE8), + + // format + MAP(GL_RGB), MAP(GL_RGBA), MAP(GL_RED), MAP(GL_GREEN), MAP(GL_BLUE), + MAP(GL_ALPHA), MAP(GL_LUMINANCE), MAP(GL_LUMINANCE_ALPHA), + MAP(GL_COLOR_INDEX), + // rest 1.2 only +#ifdef GL_VERSION_1_2 + MAP(GL_BGR), MAP(GL_BGRA), +#endif + + //type + MAP(GL_BYTE), MAP(GL_UNSIGNED_BYTE), MAP(GL_SHORT), MAP(GL_UNSIGNED_SHORT), + MAP(GL_INT), MAP(GL_UNSIGNED_INT), MAP(GL_FLOAT), MAP(GL_DOUBLE), + MAP(GL_2_BYTES), MAP(GL_3_BYTES), MAP(GL_4_BYTES), + // rest 1.2 only +#ifdef GL_VERSION_1_2 + MAP(GL_UNSIGNED_BYTE_3_3_2), MAP(GL_UNSIGNED_BYTE_2_3_3_REV), + MAP(GL_UNSIGNED_SHORT_5_6_5), MAP(GL_UNSIGNED_SHORT_5_6_5_REV), + MAP(GL_UNSIGNED_SHORT_4_4_4_4), MAP(GL_UNSIGNED_SHORT_4_4_4_4_REV), + MAP(GL_UNSIGNED_SHORT_5_5_5_1), MAP(GL_UNSIGNED_SHORT_1_5_5_5_REV), + MAP(GL_UNSIGNED_INT_8_8_8_8), MAP(GL_UNSIGNED_INT_8_8_8_8_REV), + MAP(GL_UNSIGNED_INT_10_10_10_2), MAP(GL_UNSIGNED_INT_2_10_10_10_REV), +#endif + {0, 0} +}; +#undef MAP + +/** + * \brief return the name of an OpenGL constant + * \param value the constant + * \return name of the constant or "Unknown format!" + */ +const char *glValName(GLint value) +{ + int i = 0; + + while (gl_name_map[i].name) { + if (gl_name_map[i].value == value) + return gl_name_map[i].name; + i++; + } + return "Unknown format!"; +} + +#undef TEXTUREFORMAT_ALWAYS +//! always return this format as internal texture format in glFindFormat +#define TEXTUREFORMAT_ALWAYS GL_RGB8 + +/** + * \brief find the OpenGL settings coresponding to format. + * + * All parameters may be NULL. + * \param fmt MPlayer format to analyze. + * \param bpp [OUT] bits per pixel of that format. + * \param gl_texfmt [OUT] internal texture format that fits the + * image format, not necessarily the best for performance. + * \param gl_format [OUT] OpenGL format for this image format. + * \param gl_type [OUT] OpenGL type for this image format. + * \return 1 if format is supported by OpenGL, 0 if not. + */ +int glFindFormat(uint32_t fmt, uint32_t *bpp, GLenum *gl_texfmt, + GLenum *gl_format, GLenum *gl_type) +{ + int dummy1; + GLenum dummy2; + if (bpp == NULL) bpp = &dummy1; + if (gl_texfmt == NULL) gl_texfmt = &dummy2; + if (gl_format == NULL) gl_format = &dummy2; + if (gl_type == NULL) gl_type = &dummy2; + + *bpp = IMGFMT_IS_BGR(fmt)?IMGFMT_BGR_DEPTH(fmt):IMGFMT_RGB_DEPTH(fmt); + *gl_texfmt = 3; + switch (fmt) { + case IMGFMT_RGB24: + *gl_format = GL_RGB; + *gl_type = GL_UNSIGNED_BYTE; + break; + case IMGFMT_RGBA: + *gl_texfmt = 4; + *gl_format = GL_RGBA; + *gl_type = GL_UNSIGNED_BYTE; + break; + case IMGFMT_Y800: + case IMGFMT_Y8: + *gl_texfmt = 1; + *bpp = 8; + *gl_format = GL_LUMINANCE; + *gl_type = GL_UNSIGNED_BYTE; + break; +#ifdef GL_VERSION_1_2 +#if 0 + // we do not support palettized formats, although the format the + // swscale produces works + case IMGFMT_RGB8: + gl_format = GL_RGB; + gl_type = GL_UNSIGNED_BYTE_2_3_3_REV; + break; +#endif + case IMGFMT_RGB15: + *gl_format = GL_RGBA; + *gl_type = GL_UNSIGNED_SHORT_1_5_5_5_REV; + break; + case IMGFMT_RGB16: + *gl_format = GL_RGB; + *gl_type = GL_UNSIGNED_SHORT_5_6_5_REV; + break; +#if 0 + case IMGFMT_BGR8: + // special case as red and blue have a differen number of bits. + // GL_BGR and GL_UNSIGNED_BYTE_3_3_2 isn't supported at least + // by nVidia drivers, and in addition would give more bits to + // blue than to red, which isn't wanted + gl_format = GL_RGB; + gl_type = GL_UNSIGNED_BYTE_3_3_2; + break; +#endif + case IMGFMT_BGR15: + *gl_format = GL_BGRA; + *gl_type = GL_UNSIGNED_SHORT_1_5_5_5_REV; + break; + case IMGFMT_BGR16: + *gl_format = GL_RGB; + *gl_type = GL_UNSIGNED_SHORT_5_6_5; + break; + case IMGFMT_BGR24: + *gl_format = GL_BGR; + *gl_type = GL_UNSIGNED_BYTE; + break; + case IMGFMT_BGRA: + *gl_texfmt = 4; + *gl_format = GL_BGRA; + *gl_type = GL_UNSIGNED_BYTE; + break; +#endif + default: + *gl_texfmt = 4; + *gl_format = GL_RGBA; + *gl_type = GL_UNSIGNED_BYTE; + return 0; + } +#ifdef TEXTUREFORMAT_ALWAYS + *gl_texfmt = TEXTUREFORMAT_ALWAYS; +#endif + return 1; +} + #ifndef GL_WIN32 /** * Returns the XVisualInfo associated with Window win. -- cgit v1.2.3