diff options
Diffstat (limited to 'meta-amdfalconx86/recipes-graphics/mesa/mesa/0024-gallium-util-get-h264-level-based-on-number-of-max-r.patch')
| -rw-r--r-- | meta-amdfalconx86/recipes-graphics/mesa/mesa/0024-gallium-util-get-h264-level-based-on-number-of-max-r.patch | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/meta-amdfalconx86/recipes-graphics/mesa/mesa/0024-gallium-util-get-h264-level-based-on-number-of-max-r.patch b/meta-amdfalconx86/recipes-graphics/mesa/mesa/0024-gallium-util-get-h264-level-based-on-number-of-max-r.patch new file mode 100644 index 00000000..3a4a63d8 --- /dev/null +++ b/meta-amdfalconx86/recipes-graphics/mesa/mesa/0024-gallium-util-get-h264-level-based-on-number-of-max-r.patch @@ -0,0 +1,76 @@ +From 4e9dbaaafed23588945a09617796baa91194dc57 Mon Sep 17 00:00:00 2001 +From: Leo Liu <leo.liu@amd.com> +Date: Thu, 12 Mar 2015 14:01:52 -0400 +Subject: [PATCH 24/29] gallium/util: get h264 level based on number of max + references and resolution +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +v2: add commments for limitation of max references numbers, +and what the caculation is based + +Signed-off-by: Leo Liu <leo.liu@amd.com> +Reviewed-by: Christian König <christian.koenig@amd.com> +Signed-off-by: Arindam Nath <arindam.nath@amd.com> +--- + src/gallium/auxiliary/util/u_video.h | 36 ++++++++++++++++++++++++++++++++++++ + 1 file changed, 36 insertions(+) + +diff --git a/src/gallium/auxiliary/util/u_video.h b/src/gallium/auxiliary/util/u_video.h +index 45b2d6e..b4743d1 100644 +--- a/src/gallium/auxiliary/util/u_video.h ++++ b/src/gallium/auxiliary/util/u_video.h +@@ -38,6 +38,7 @@ extern "C" { + /* u_reduce_video_profile() needs these */ + #include "pipe/p_compiler.h" + #include "util/u_debug.h" ++#include "util/u_math.h" + + static INLINE enum pipe_video_format + u_reduce_video_profile(enum pipe_video_profile profile) +@@ -146,6 +147,41 @@ u_copy_swap422_packed(void *const *destination_data, + } + } + ++static INLINE uint32_t ++u_get_h264_level(uint32_t width, uint32_t height, uint32_t *max_reference) ++{ ++ uint32_t max_dpb_mbs; ++ ++ width = align(width, 16); ++ height = align(height, 16); ++ ++ /* Max references will be used for caculation of number of DPB buffers ++ in the UVD driver, limitation of max references is 16. Some client ++ like mpv application for VA-API, it requires references more than that, ++ so we have to set max of references to 16 here. */ ++ *max_reference = MIN2(*max_reference, 16); ++ max_dpb_mbs = (width / 16) * (height / 16) * *max_reference; ++ ++ /* The calculation is based on "Decoded picture buffering" section ++ from http://en.wikipedia.org/wiki/H.264/MPEG-4_AVC */ ++ if (max_dpb_mbs <= 8100) ++ return 30; ++ else if (max_dpb_mbs <= 18000) ++ return 31; ++ else if (max_dpb_mbs <= 20480) ++ return 32; ++ else if (max_dpb_mbs <= 32768) ++ return 41; ++ else if (max_dpb_mbs <= 34816) ++ return 42; ++ else if (max_dpb_mbs <= 110400) ++ return 50; ++ else if (max_dpb_mbs <= 184320) ++ return 51; ++ else ++ return 52; ++} ++ + #ifdef __cplusplus + } + #endif +-- +1.9.1 + |