mediacodec_sw_buffer.c 11.6 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39
/*
 * Android MediaCodec software buffer copy functions
 *
 * Copyright (c) 2015-2016 Matthieu Bouron <matthieu.bouron stupeflix.com>
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg 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.
 *
 * FFmpeg 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 FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include <string.h>
#include <sys/types.h>

#include "libavutil/frame.h"
#include "libavutil/mem.h"

#include "avcodec.h"
#include "mediacodecdec.h"
#include "mediacodec_wrapper.h"
#include "mediacodec_sw_buffer.h"

#define QCOM_TILE_WIDTH 64
#define QCOM_TILE_HEIGHT 32
#define QCOM_TILE_SIZE (QCOM_TILE_WIDTH * QCOM_TILE_HEIGHT)
#define QCOM_TILE_GROUP_SIZE (4 * QCOM_TILE_SIZE)

/**
40
 * The code handling the various YUV color formats is taken from the
41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117
 * GStreamer project.
 *
 * Gstreamer reference:
 * https://cgit.freedesktop.org/gstreamer/gst-plugins-bad/tree/sys/androidmedia/
 *
 * Copyright (C) 2012, Collabora Ltd.
 *   Author: Sebastian Dröge <sebastian.droege@collabora.co.uk>
 *
 * Copyright (C) 2012, Rafaël Carré <funman@videolanorg>
 *
 * Copyright (C) 2015, Sebastian Dröge <sebastian@centricular.com>
 *
 * Copyright (C) 2014-2015, Collabora Ltd.
 *   Author: Matthieu Bouron <matthieu.bouron@gcollabora.com>
 *
 * Copyright (C) 2015, Edward Hervey
 *   Author: Edward Hervey <bilboed@gmail.com>
 *
 * Copyright (C) 2015, Matthew Waters <matthew@centricular.com>
 *
 * 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
 * version 2.1 of the License.
 *
 * 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
 *
 */
void ff_mediacodec_sw_buffer_copy_yuv420_planar(AVCodecContext *avctx,
                                                MediaCodecDecContext *s,
                                                uint8_t *data,
                                                size_t size,
                                                FFAMediaCodecBufferInfo *info,
                                                AVFrame *frame)
{
    int i;
    uint8_t *src = NULL;

    for (i = 0; i < 3; i++) {
        int stride = s->stride;
        int height;

        src = data + info->offset;
        if (i == 0) {
            height = avctx->height;

            src += s->crop_top * s->stride;
            src += s->crop_left;
        } else {
            height = avctx->height / 2;
            stride = (s->stride + 1) / 2;

            src += s->slice_height * s->stride;

            if (i == 2) {
                src += ((s->slice_height + 1) / 2) * stride;
            }

            src += s->crop_top * stride;
            src += (s->crop_left / 2);
        }

        if (frame->linesize[i] == stride) {
            memcpy(frame->data[i], src, height * stride);
        } else {
            int j, width;
            uint8_t *dst = frame->data[i];

            if (i == 0) {
                width = avctx->width;
118 119
            } else if (i >= 1) {
                width = FFMIN(frame->linesize[i], FFALIGN(avctx->width, 2) / 2);
120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339
            }

            for (j = 0; j < height; j++) {
                memcpy(dst, src, width);
                src += stride;
                dst += frame->linesize[i];
            }
        }
    }
}

void ff_mediacodec_sw_buffer_copy_yuv420_semi_planar(AVCodecContext *avctx,
                                                     MediaCodecDecContext *s,
                                                     uint8_t *data,
                                                     size_t size,
                                                     FFAMediaCodecBufferInfo *info,
                                                     AVFrame *frame)
{
    int i;
    uint8_t *src = NULL;

    for (i = 0; i < 2; i++) {
        int height;

        src = data + info->offset;
        if (i == 0) {
            height = avctx->height;

            src += s->crop_top * s->stride;
            src += s->crop_left;
        } else if (i == 1) {
            height = avctx->height / 2;

            src += s->slice_height * s->stride;
            src += s->crop_top * s->stride;
            src += s->crop_left;
        }

        if (frame->linesize[i] == s->stride) {
            memcpy(frame->data[i], src, height * s->stride);
        } else {
            int j, width;
            uint8_t *dst = frame->data[i];

            if (i == 0) {
                width = avctx->width;
            } else if (i == 1) {
                width = FFMIN(frame->linesize[i], FFALIGN(avctx->width, 2));
            }

            for (j = 0; j < height; j++) {
                memcpy(dst, src, width);
                src += s->stride;
                dst += frame->linesize[i];
            }
        }
    }
}



void ff_mediacodec_sw_buffer_copy_yuv420_packed_semi_planar(AVCodecContext *avctx,
                                                            MediaCodecDecContext *s,
                                                            uint8_t *data,
                                                            size_t size,
                                                            FFAMediaCodecBufferInfo *info,
                                                            AVFrame *frame)
{
    int i;
    uint8_t *src = NULL;

    for (i = 0; i < 2; i++) {
        int height;

        src = data + info->offset;
        if (i == 0) {
            height = avctx->height;
        } else if (i == 1) {
            height = avctx->height / 2;

            src += (s->slice_height - s->crop_top / 2) * s->stride;

            src += s->crop_top * s->stride;
            src += s->crop_left;
        }

        if (frame->linesize[i] == s->stride) {
            memcpy(frame->data[i], src, height * s->stride);
        } else {
            int j, width;
            uint8_t *dst = frame->data[i];

            if (i == 0) {
                width = avctx->width;
            } else if (i == 1) {
                width = FFMIN(frame->linesize[i], FFALIGN(avctx->width, 2));
            }

            for (j = 0; j < height; j++) {
                memcpy(dst, src, width);
                src += s->stride;
                dst += frame->linesize[i];
            }
        }
    }
}

/**
 * The code handling the QCOM_FormatYUV420PackedSemiPlanar64x32Tile2m8ka
 * color format is taken from the VLC project.
 *
 * VLC reference:
 * http://git.videolan.org/?p=vlc.git;a=blob;f=modules/codec/omxil/qcom.c;hb=HEAD
 *
 * VLC copyright notice:
 *
 *****************************************************************************
 * qcom.c : pixel format translation for Qualcomm tiled nv12
 *****************************************************************************
 * Copyright © 2012 Rafaël Carré
 *
 * Authors: Rafaël Carré <funman@videolanorg>
 *
 * This program 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 program 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 program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
 *
 */

static size_t qcom_tile_pos(size_t x, size_t y, size_t w, size_t h)
{
  size_t flim = x + (y & ~1) * w;

  if (y & 1) {
    flim += (x & ~3) + 2;
  } else if ((h & 1) == 0 || y != (h - 1)) {
    flim += (x + 2) & ~3;
  }

  return flim;
}

void ff_mediacodec_sw_buffer_copy_yuv420_packed_semi_planar_64x32Tile2m8ka(AVCodecContext *avctx,
                                                                           MediaCodecDecContext *s,
                                                                           uint8_t *data,
                                                                           size_t size,
                                                                           FFAMediaCodecBufferInfo *info,
                                                                           AVFrame *frame)
{
    size_t width = frame->width;
    size_t linesize = frame->linesize[0];
    size_t height = frame->height;

    const size_t tile_w = (width - 1) / QCOM_TILE_WIDTH + 1;
    const size_t tile_w_align = (tile_w + 1) & ~1;
    const size_t tile_h_luma = (height - 1) / QCOM_TILE_HEIGHT + 1;
    const size_t tile_h_chroma = (height / 2 - 1) / QCOM_TILE_HEIGHT + 1;

    size_t luma_size = tile_w_align * tile_h_luma * QCOM_TILE_SIZE;
    if((luma_size % QCOM_TILE_GROUP_SIZE) != 0)
        luma_size = (((luma_size - 1) / QCOM_TILE_GROUP_SIZE) + 1) * QCOM_TILE_GROUP_SIZE;

    for(size_t y = 0; y < tile_h_luma; y++) {
        size_t row_width = width;
        for(size_t x = 0; x < tile_w; x++) {
            size_t tile_width = row_width;
            size_t tile_height = height;
            /* dest luma memory index for this tile */
            size_t luma_idx = y * QCOM_TILE_HEIGHT * linesize + x * QCOM_TILE_WIDTH;
            /* dest chroma memory index for this tile */
            /* XXX: remove divisions */
            size_t chroma_idx = (luma_idx / linesize) * linesize / 2 + (luma_idx % linesize);

            /* luma source pointer for this tile */
            const uint8_t *src_luma  = data
                + qcom_tile_pos(x, y,tile_w_align, tile_h_luma) * QCOM_TILE_SIZE;

            /* chroma source pointer for this tile */
            const uint8_t *src_chroma = data + luma_size
                + qcom_tile_pos(x, y/2, tile_w_align, tile_h_chroma) * QCOM_TILE_SIZE;
            if (y & 1)
                src_chroma += QCOM_TILE_SIZE/2;

            /* account for right columns */
            if (tile_width > QCOM_TILE_WIDTH)
                tile_width = QCOM_TILE_WIDTH;

            /* account for bottom rows */
            if (tile_height > QCOM_TILE_HEIGHT)
                tile_height = QCOM_TILE_HEIGHT;

            tile_height /= 2;
            while (tile_height--) {
                memcpy(frame->data[0] + luma_idx, src_luma, tile_width);
                src_luma += QCOM_TILE_WIDTH;
                luma_idx += linesize;

                memcpy(frame->data[0] + luma_idx, src_luma, tile_width);
                src_luma += QCOM_TILE_WIDTH;
                luma_idx += linesize;

                memcpy(frame->data[1] + chroma_idx, src_chroma, tile_width);
                src_chroma += QCOM_TILE_WIDTH;
                chroma_idx += linesize;
            }
            row_width -= QCOM_TILE_WIDTH;
        }
        height -= QCOM_TILE_HEIGHT;
    }
}