/* * gstvaapiutils_h264.c - H.264 related utilities * * Copyright (C) 2011-2013 Intel Corporation * Author: Gwenole Beauchesne * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public License * as published by the Free Software Foundation; either version 2.1 * of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, * Boston, MA 02110-1301 USA */ #include "sysdeps.h" #include #include "gstvaapiutils_h264.h" /* Table A-1 - Level limits */ /* *INDENT-OFF* */ static const GstVaapiH264LevelLimits gst_vaapi_h264_level_limits[] = { /* level idc MaxMBPS MaxFS MaxDpbMbs MaxBR */ { GST_VAAPI_LEVEL_H264_L1, 10, 1485, 99, 396, 64 }, { GST_VAAPI_LEVEL_H264_L1b, 11, 1485, 99, 396, 128 }, { GST_VAAPI_LEVEL_H264_L1_1, 11, 3000, 396, 900, 192 }, { GST_VAAPI_LEVEL_H264_L1_2, 12, 6000, 396, 2376, 384 }, { GST_VAAPI_LEVEL_H264_L1_3, 13, 11880, 396, 2376, 768 }, { GST_VAAPI_LEVEL_H264_L2, 20, 11880, 396, 2376, 2000 }, { GST_VAAPI_LEVEL_H264_L2_1, 21, 19800, 792, 4752, 4000 }, { GST_VAAPI_LEVEL_H264_L2_2, 22, 20250, 1620, 8100, 4000 }, { GST_VAAPI_LEVEL_H264_L3, 30, 40500, 1620, 8100, 10000 }, { GST_VAAPI_LEVEL_H264_L3_1, 31, 108000, 3600, 18000, 14000 }, { GST_VAAPI_LEVEL_H264_L3_2, 32, 216000, 5120, 20480, 20000 }, { GST_VAAPI_LEVEL_H264_L4, 40, 245760, 8192, 32768, 20000 }, { GST_VAAPI_LEVEL_H264_L4_1, 41, 245760, 8192, 32768, 50000 }, { GST_VAAPI_LEVEL_H264_L4_2, 42, 522240, 8704, 34816, 50000 }, { GST_VAAPI_LEVEL_H264_L5, 50, 589824, 22080, 110400, 135000 }, { GST_VAAPI_LEVEL_H264_L5_1, 51, 983040, 36864, 184320, 240000 }, { GST_VAAPI_LEVEL_H264_L5_2, 52, 2073600, 36864, 184320, 240000 }, { 0, } }; /* *INDENT-ON* */ /** Returns GstVaapiProfile from H.264 profile_idc value */ GstVaapiProfile gst_vaapi_utils_h264_get_profile (guint8 profile_idc) { GstVaapiProfile profile; switch (profile_idc) { case GST_H264_PROFILE_BASELINE: profile = GST_VAAPI_PROFILE_H264_BASELINE; break; case GST_H264_PROFILE_MAIN: profile = GST_VAAPI_PROFILE_H264_MAIN; break; case GST_H264_PROFILE_HIGH: profile = GST_VAAPI_PROFILE_H264_HIGH; break; case GST_H264_PROFILE_HIGH10: profile = GST_VAAPI_PROFILE_H264_HIGH10; break; default: g_assert (0 && "unsupported profile_idc value"); profile = GST_VAAPI_PROFILE_UNKNOWN; break; } return profile; } /** Returns H.264 profile_idc value from GstVaapiProfile */ guint8 gst_vaapi_utils_h264_get_profile_idc (GstVaapiProfile profile) { guint8 profile_idc; switch (profile) { case GST_VAAPI_PROFILE_H264_BASELINE: case GST_VAAPI_PROFILE_H264_CONSTRAINED_BASELINE: profile_idc = GST_H264_PROFILE_BASELINE; break; case GST_VAAPI_PROFILE_H264_MAIN: profile_idc = GST_H264_PROFILE_MAIN; break; case GST_VAAPI_PROFILE_H264_HIGH: profile_idc = GST_H264_PROFILE_HIGH; break; case GST_VAAPI_PROFILE_H264_HIGH10: profile_idc = GST_H264_PROFILE_HIGH10; break; default: g_assert (0 && "unsupported GstVaapiProfile value"); profile_idc = 0; break; } return profile_idc; } /** Returns GstVaapiLevelH264 from H.264 level_idc value */ GstVaapiLevelH264 gst_vaapi_utils_h264_get_level (guint8 level_idc) { const GstVaapiH264LevelLimits *llp; // Prefer Level 1.1 over level 1b if (G_UNLIKELY (level_idc == 11)) return GST_VAAPI_LEVEL_H264_L1_1; for (llp = gst_vaapi_h264_level_limits; llp->level != 0; llp++) { if (llp->level_idc == level_idc) return llp->level; } g_assert (0 && "unsupported level_idc value"); return (GstVaapiLevelH264) 0; } /** Returns H.264 level_idc value from GstVaapiLevelH264 */ guint8 gst_vaapi_utils_h264_get_level_idc (GstVaapiLevelH264 level) { const GstVaapiH264LevelLimits *const llp = gst_vaapi_utils_h264_get_level_limits (level); return llp ? llp->level_idc : 0; } /** Returns level limits as specified in Table A-1 of the H.264 standard */ const GstVaapiH264LevelLimits * gst_vaapi_utils_h264_get_level_limits (GstVaapiLevelH264 level) { if (level < GST_VAAPI_LEVEL_H264_L1 || level > GST_VAAPI_LEVEL_H264_L5_2) return NULL; return &gst_vaapi_h264_level_limits[level - GST_VAAPI_LEVEL_H264_L1]; } /** Returns the Table A-1 specification */ const GstVaapiH264LevelLimits * gst_vaapi_utils_h264_get_level_limits_table (guint * out_length_ptr) { if (out_length_ptr) *out_length_ptr = G_N_ELEMENTS (gst_vaapi_h264_level_limits) - 1; return gst_vaapi_h264_level_limits; } /** Returns GstVaapiChromaType from H.264 chroma_format_idc value */ GstVaapiChromaType gst_vaapi_utils_h264_get_chroma_type (guint chroma_format_idc) { GstVaapiChromaType chroma_type; switch (chroma_format_idc) { case 0: chroma_type = GST_VAAPI_CHROMA_TYPE_YUV400; break; case 1: chroma_type = GST_VAAPI_CHROMA_TYPE_YUV420; break; case 2: chroma_type = GST_VAAPI_CHROMA_TYPE_YUV422; break; case 3: chroma_type = GST_VAAPI_CHROMA_TYPE_YUV444; break; default: g_assert (0 && "unsupported chroma_format_idc value"); chroma_type = (GstVaapiChromaType) 0; break; } return chroma_type; } /** Returns H.264 chroma_format_idc value from GstVaapiChromaType */ guint gst_vaapi_utils_h264_get_chroma_format_idc (GstVaapiChromaType chroma_type) { guint chroma_format_idc; switch (chroma_type) { case GST_VAAPI_CHROMA_TYPE_YUV400: chroma_format_idc = 0; break; case GST_VAAPI_CHROMA_TYPE_YUV420: chroma_format_idc = 1; break; case GST_VAAPI_CHROMA_TYPE_YUV422: chroma_format_idc = 2; break; case GST_VAAPI_CHROMA_TYPE_YUV444: chroma_format_idc = 3; break; default: g_assert (0 && "unsupported GstVaapiChromaType value"); chroma_format_idc = 1; break; } return chroma_format_idc; }