mirror of
https://github.com/mpv-player/mpv
synced 2024-11-14 22:48:35 +01:00
1ad036a2ef
Another legacy annoyance. The only place where packed YUV is still important is slightly older Apple hardware or drivers, which require it for efficient hardware decoding.
345 lines
14 KiB
C
345 lines
14 KiB
C
#include "common/common.h"
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#include "formats.h"
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enum {
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// --- GL type aliases (for readability)
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T_U8 = GL_UNSIGNED_BYTE,
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T_U16 = GL_UNSIGNED_SHORT,
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T_FL = GL_FLOAT,
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};
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// List of allowed formats, and their usability for bilinear filtering and FBOs.
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// This is limited to combinations that are useful for our renderer.
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static const struct gl_format gl_formats[] = {
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// These are used for desktop GL 3+, and GLES 3+ with GL_EXT_texture_norm16.
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{GL_R8, GL_RED, T_U8, F_CF | F_GL3 | F_GL2F | F_ES3},
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{GL_RG8, GL_RG, T_U8, F_CF | F_GL3 | F_GL2F | F_ES3},
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{GL_RGB8, GL_RGB, T_U8, F_CF | F_GL3 | F_GL2F | F_ES3},
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{GL_RGBA8, GL_RGBA, T_U8, F_CF | F_GL3 | F_GL2F | F_ES3},
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{GL_R16, GL_RED, T_U16, F_CF | F_GL3 | F_GL2F | F_EXT16},
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{GL_RG16, GL_RG, T_U16, F_CF | F_GL3 | F_GL2F | F_EXT16},
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{GL_RGB16, GL_RGB, T_U16, F_CF | F_GL3 | F_GL2F},
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{GL_RGBA16, GL_RGBA, T_U16, F_CF | F_GL3 | F_GL2F | F_EXT16},
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// Specifically not color-renderable.
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{GL_RGB16, GL_RGB, T_U16, F_TF | F_EXT16},
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// GL2 legacy. Ignores possibly present FBO extensions (no CF flag set).
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{GL_LUMINANCE8, GL_LUMINANCE, T_U8, F_TF | F_GL2},
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{GL_LUMINANCE8_ALPHA8, GL_LUMINANCE_ALPHA, T_U8, F_TF | F_GL2},
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{GL_RGB8, GL_RGB, T_U8, F_TF | F_GL2},
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{GL_RGBA8, GL_RGBA, T_U8, F_TF | F_GL2},
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{GL_LUMINANCE16, GL_LUMINANCE, T_U16, F_TF | F_GL2},
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{GL_LUMINANCE16_ALPHA16, GL_LUMINANCE_ALPHA, T_U16, F_TF | F_GL2},
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{GL_RGB16, GL_RGB, T_U16, F_TF | F_GL2},
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{GL_RGBA16, GL_RGBA, T_U16, F_TF | F_GL2},
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// ES2 legacy
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{GL_LUMINANCE, GL_LUMINANCE, T_U8, F_TF | F_ES2},
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{GL_LUMINANCE_ALPHA, GL_LUMINANCE_ALPHA, T_U8, F_TF | F_ES2},
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{GL_RGB, GL_RGB, T_U8, F_TF | F_ES2},
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{GL_RGBA, GL_RGBA, T_U8, F_TF | F_ES2},
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// Non-normalized integer formats.
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// Follows ES 3.0 as to which are color-renderable.
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{GL_R8UI, GL_RED_INTEGER, T_U8, F_CR | F_GL3 | F_ES3},
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{GL_RG8UI, GL_RG_INTEGER, T_U8, F_CR | F_GL3 | F_ES3},
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{GL_RGB8UI, GL_RGB_INTEGER, T_U8, F_GL3 | F_ES3},
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{GL_RGBA8UI, GL_RGBA_INTEGER, T_U8, F_CR | F_GL3 | F_ES3},
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{GL_R16UI, GL_RED_INTEGER, T_U16, F_CR | F_GL3 | F_ES3},
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{GL_RG16UI, GL_RG_INTEGER, T_U16, F_CR | F_GL3 | F_ES3},
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{GL_RGB16UI, GL_RGB_INTEGER, T_U16, F_GL3 | F_ES3},
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{GL_RGBA16UI, GL_RGBA_INTEGER, T_U16, F_CR | F_GL3 | F_ES3},
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// On GL3+ or GL2.1 with GL_ARB_texture_float, floats work fully.
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{GL_R16F, GL_RED, T_FL, F_F16 | F_CF | F_GL3 | F_GL2F},
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{GL_RG16F, GL_RG, T_FL, F_F16 | F_CF | F_GL3 | F_GL2F},
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{GL_RGB16F, GL_RGB, T_FL, F_F16 | F_CF | F_GL3 | F_GL2F},
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{GL_RGBA16F, GL_RGBA, T_FL, F_F16 | F_CF | F_GL3 | F_GL2F},
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{GL_R32F, GL_RED, T_FL, F_CF | F_GL3 | F_GL2F},
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{GL_RG32F, GL_RG, T_FL, F_CF | F_GL3 | F_GL2F},
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{GL_RGB32F, GL_RGB, T_FL, F_CF | F_GL3 | F_GL2F},
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{GL_RGBA32F, GL_RGBA, T_FL, F_CF | F_GL3 | F_GL2F},
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// Note: we simply don't support float anything on ES2, despite extensions.
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// We also don't bother with non-filterable float formats, and we ignore
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// 32 bit float formats that are not blendable when rendering to them.
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// On ES3.2+, both 16 bit floats work fully (except 3-component formats).
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// F_EXTF16 implies extensions that also enable 16 bit floats fully.
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{GL_R16F, GL_RED, T_FL, F_F16 | F_CF | F_ES32 | F_EXTF16},
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{GL_RG16F, GL_RG, T_FL, F_F16 | F_CF | F_ES32 | F_EXTF16},
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{GL_RGB16F, GL_RGB, T_FL, F_F16 | F_TF | F_ES32 | F_EXTF16},
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{GL_RGBA16F, GL_RGBA, T_FL, F_F16 | F_CF | F_ES32 | F_EXTF16},
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// On ES3.0+, 16 bit floats are texture-filterable.
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// Don't bother with 32 bit floats; they exist but are neither CR nor TF.
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{GL_R16F, GL_RED, T_FL, F_F16 | F_TF | F_ES3},
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{GL_RG16F, GL_RG, T_FL, F_F16 | F_TF | F_ES3},
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{GL_RGB16F, GL_RGB, T_FL, F_F16 | F_TF | F_ES3},
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{GL_RGBA16F, GL_RGBA, T_FL, F_F16 | F_TF | F_ES3},
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// These might be useful as FBO formats.
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{GL_RGB10_A2, GL_RGBA,
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GL_UNSIGNED_INT_2_10_10_10_REV, F_CF | F_GL3 | F_ES3},
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{GL_RGBA12, GL_RGBA, T_U16, F_CF | F_GL2 | F_GL3},
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{GL_RGB10, GL_RGB, T_U16, F_CF | F_GL2 | F_GL3},
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// Special formats.
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{GL_RGB8, GL_RGB,
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GL_UNSIGNED_SHORT_5_6_5, F_TF | F_GL2 | F_GL3},
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{GL_RGB, GL_RGB_422_APPLE,
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GL_UNSIGNED_SHORT_8_8_APPLE, F_TF | F_APPL},
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{0}
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};
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// Return an or-ed combination of all F_ flags that apply.
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int gl_format_feature_flags(GL *gl)
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{
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return (gl->version == 210 ? F_GL2 : 0)
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| (gl->version >= 300 ? F_GL3 : 0)
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| (gl->es == 200 ? F_ES2 : 0)
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| (gl->es >= 300 ? F_ES3 : 0)
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| (gl->es >= 320 ? F_ES32 : 0)
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| (gl->mpgl_caps & MPGL_CAP_EXT16 ? F_EXT16 : 0)
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| ((gl->es >= 300 &&
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(gl->mpgl_caps & MPGL_CAP_EXT_CR_HFLOAT)) ? F_EXTF16 : 0)
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| ((gl->version == 210 &&
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(gl->mpgl_caps & MPGL_CAP_ARB_FLOAT) &&
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(gl->mpgl_caps & MPGL_CAP_TEX_RG) &&
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(gl->mpgl_caps & MPGL_CAP_FB)) ? F_GL2F : 0)
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| (gl->mpgl_caps & MPGL_CAP_APPLE_RGB_422 ? F_APPL : 0);
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}
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// Return the entry for the given internal format. Return NULL if unsupported.
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const struct gl_format *gl_find_internal_format(GL *gl, GLint internal_format)
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{
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int features = gl_format_feature_flags(gl);
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for (int n = 0; gl_formats[n].type; n++) {
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const struct gl_format *f = &gl_formats[n];
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if (f->internal_format == internal_format && (f->flags & features))
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return f;
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}
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return NULL;
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}
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// Find the first supported format with a specific gl_format.type
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static const struct gl_format *gl_find_gl_type_format(GL *gl, GLenum type)
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{
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int features = gl_format_feature_flags(gl);
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for (int i = 0; gl_formats[i].type; i++) {
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const struct gl_format *f = &gl_formats[i];
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if (f->type == type && (f->flags & features))
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return f;
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}
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return NULL;
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}
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// type: one of MPGL_TYPE_*
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// flags: bitset of F_*, all flags must be present
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const struct gl_format *gl_find_format(GL *gl, int type, int flags,
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int bytes_per_component, int n_components)
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{
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if (!bytes_per_component || !n_components || !type)
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return NULL;
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int features = gl_format_feature_flags(gl);
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for (int n = 0; gl_formats[n].type; n++) {
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const struct gl_format *f = &gl_formats[n];
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if ((f->flags & features) &&
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((f->flags & flags) == flags) &&
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gl_format_type(f) == type &&
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gl_component_size(f->type) == bytes_per_component &&
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gl_format_components(f->format) == n_components)
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return f;
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}
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return NULL;
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}
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// Return a texture-filterable unsigned normalized fixed point format.
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const struct gl_format *gl_find_unorm_format(GL *gl, int bytes_per_component,
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int n_components)
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{
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return gl_find_format(gl, MPGL_TYPE_UNORM, F_TF, bytes_per_component,
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n_components);
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}
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// Return an unsigned integer format.
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const struct gl_format *gl_find_uint_format(GL *gl, int bytes_per_component,
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int n_components)
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{
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return gl_find_format(gl, MPGL_TYPE_UINT, 0, bytes_per_component,
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n_components);
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}
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// Return a 16 bit float format. Note that this will return a GL_FLOAT format
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// with 32 bit per component; just the internal representation is smaller.
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// Some GL versions will allow upload with GL_HALF_FLOAT as well.
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const struct gl_format *gl_find_float16_format(GL *gl, int n_components)
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{
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return gl_find_format(gl, MPGL_TYPE_FLOAT, F_F16, 4, n_components);
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}
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int gl_format_type(const struct gl_format *format)
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{
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if (!format)
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return 0;
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if (format->type == GL_FLOAT)
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return MPGL_TYPE_FLOAT;
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if (gl_integer_format_to_base(format->format))
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return MPGL_TYPE_UINT;
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return MPGL_TYPE_UNORM;
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}
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// Return base internal format of an integer format, or 0 if it's not integer.
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// "format" is like in struct gl_format.
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GLenum gl_integer_format_to_base(GLenum format)
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{
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switch (format) {
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case GL_RED_INTEGER: return GL_RED;
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case GL_RG_INTEGER: return GL_RG;
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case GL_RGB_INTEGER: return GL_RGB;
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case GL_RGBA_INTEGER: return GL_RGBA;
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}
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return 0;
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}
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// Return whether it's a non-normalized integer format.
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// "format" is like in struct gl_format.
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bool gl_is_integer_format(GLenum format)
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{
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return !!gl_integer_format_to_base(format);
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}
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// Return the number of bytes per component this format implies.
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// Returns 0 for formats with non-byte alignments and formats which
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// merge multiple components (like GL_UNSIGNED_SHORT_5_6_5).
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// "type" is like in struct gl_format.
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int gl_component_size(GLenum type)
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{
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switch (type) {
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case GL_UNSIGNED_BYTE: return 1;
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case GL_UNSIGNED_SHORT: return 2;
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case GL_FLOAT: return 4;
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}
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return 0;
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}
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// Return the number of separate color components.
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// "format" is like in struct gl_format.
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int gl_format_components(GLenum format)
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{
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switch (format) {
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case GL_RED:
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case GL_RED_INTEGER:
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case GL_LUMINANCE:
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return 1;
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case GL_RG:
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case GL_RG_INTEGER:
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case GL_LUMINANCE_ALPHA:
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return 2;
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case GL_RGB:
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case GL_RGB_INTEGER:
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return 3;
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case GL_RGBA:
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case GL_RGBA_INTEGER:
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return 4;
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}
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return 0;
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}
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// Return the number of bytes per pixel for the given format.
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// Parameter names like in struct gl_format.
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int gl_bytes_per_pixel(GLenum format, GLenum type)
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{
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// Formats with merged components are special.
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switch (type) {
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case GL_UNSIGNED_INT_2_10_10_10_REV: return 4;
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case GL_UNSIGNED_SHORT_5_6_5: return 2;
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case GL_UNSIGNED_SHORT_8_8_APPLE: return 2;
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case GL_UNSIGNED_SHORT_8_8_REV_APPLE: return 2;
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}
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return gl_component_size(type) * gl_format_components(format);
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}
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// The format has cleanly separated components (on byte boundaries).
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bool gl_format_is_regular(const struct gl_format *fmt)
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{
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int bpp = gl_component_size(fmt->type) * gl_format_components(fmt->format);
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return bpp == gl_bytes_per_pixel(fmt->format, fmt->type);
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}
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// Like gl_find_unorm_format(), but takes bits (not bytes), and if no fixed
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// point format is available, return an unsigned integer format.
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static const struct gl_format *find_plane_format(GL *gl, int bytes, int n_channels)
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{
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const struct gl_format *f = gl_find_unorm_format(gl, bytes, n_channels);
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if (f)
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return f;
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return gl_find_uint_format(gl, bytes, n_channels);
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}
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// Put a mapping of imgfmt to OpenGL textures into *out. Basically it selects
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// the correct texture formats needed to represent an imgfmt in OpenGL, with
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// textures using the same memory organization as on the CPU.
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// Each plane is represented by a texture, and each texture has a RGBA
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// component order. out->components describes the meaning of them.
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// May return integer formats for >8 bit formats, if the driver has no
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// normalized 16 bit formats.
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// Returns false (and *out is not touched) if no format found.
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bool gl_get_imgfmt_desc(GL *gl, int imgfmt, struct gl_imgfmt_desc *out)
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{
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struct gl_imgfmt_desc res = {0};
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struct mp_regular_imgfmt regfmt;
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if (mp_get_regular_imgfmt(®fmt, imgfmt)) {
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res.num_planes = regfmt.num_planes;
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res.component_bits = regfmt.component_size * 8;
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res.component_pad = regfmt.component_pad;
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for (int n = 0; n < regfmt.num_planes; n++) {
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struct mp_regular_imgfmt_plane *plane = ®fmt.planes[n];
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res.planes[n] = find_plane_format(gl, regfmt.component_size,
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plane->num_components);
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if (!res.planes[n])
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return false;
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for (int i = 0; i < plane->num_components; i++)
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res.components[n][i] = plane->components[i];
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}
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res.chroma_w = regfmt.chroma_w;
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res.chroma_h = regfmt.chroma_h;
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goto supported;
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}
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// Special formats for which OpenGL happens to have direct support.
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if (imgfmt == IMGFMT_RGB565) {
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res.num_planes = 1;
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res.planes[0] = gl_find_gl_type_format(gl, GL_UNSIGNED_SHORT_5_6_5);
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if (!res.planes[0])
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return false;
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for (int n = 0; n < 3; n++)
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res.components[0][n] = n + 1;
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res.chroma_w = res.chroma_h = 1;
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goto supported;
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}
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if (imgfmt == IMGFMT_UYVY) {
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res.num_planes = 1;
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res.planes[0] = gl_find_gl_type_format(gl, GL_UNSIGNED_SHORT_8_8_APPLE);
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if (!res.planes[0])
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return false;
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res.components[0][0] = 3;
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res.components[0][1] = 1;
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res.components[0][2] = 2;
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res.chroma_w = res.chroma_h = 1;
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goto supported;
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}
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// Unsupported format
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return false;
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supported:
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*out = res;
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return true;
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}
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