340 lines
12 KiB
C
340 lines
12 KiB
C
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/*
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* Android MediaCodec software buffer copy functions
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*
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* Copyright (c) 2015-2016 Matthieu Bouron <matthieu.bouron stupeflix.com>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <string.h>
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#include <sys/types.h>
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#include "libavutil/frame.h"
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#include "libavutil/mem.h"
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#include "avcodec.h"
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#include "mediacodec_wrapper.h"
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#include "mediacodec_sw_buffer.h"
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#include "mediacodecdec_common.h"
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#define QCOM_TILE_WIDTH 64
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#define QCOM_TILE_HEIGHT 32
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#define QCOM_TILE_SIZE (QCOM_TILE_WIDTH * QCOM_TILE_HEIGHT)
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#define QCOM_TILE_GROUP_SIZE (4 * QCOM_TILE_SIZE)
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/**
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* The code handling the various YUV color formats is taken from the
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* GStreamer project.
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*
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* Gstreamer reference:
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* https://cgit.freedesktop.org/gstreamer/gst-plugins-bad/tree/sys/androidmedia/
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*
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* Copyright (C) 2012, Collabora Ltd.
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* Author: Sebastian Dröge <sebastian.droege@collabora.co.uk>
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*
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* Copyright (C) 2012, Rafaël Carré <funman@videolanorg>
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*
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* Copyright (C) 2015, Sebastian Dröge <sebastian@centricular.com>
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*
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* Copyright (C) 2014-2015, Collabora Ltd.
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* Author: Matthieu Bouron <matthieu.bouron@gcollabora.com>
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*
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* Copyright (C) 2015, Edward Hervey
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* Author: Edward Hervey <bilboed@gmail.com>
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*
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* Copyright (C) 2015, Matthew Waters <matthew@centricular.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation
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* version 2.1 of the License.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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void ff_mediacodec_sw_buffer_copy_yuv420_planar(AVCodecContext *avctx,
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MediaCodecDecContext *s,
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uint8_t *data,
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size_t size,
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FFAMediaCodecBufferInfo *info,
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AVFrame *frame)
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{
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int i;
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uint8_t *src = NULL;
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for (i = 0; i < 3; i++) {
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int stride = s->stride;
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int height;
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src = data + info->offset;
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if (i == 0) {
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height = avctx->height;
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src += s->crop_top * s->stride;
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src += s->crop_left;
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} else {
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height = avctx->height / 2;
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stride = (s->stride + 1) / 2;
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src += s->slice_height * s->stride;
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if (i == 2) {
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src += ((s->slice_height + 1) / 2) * stride;
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}
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src += s->crop_top * stride;
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src += (s->crop_left / 2);
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}
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if (frame->linesize[i] == stride) {
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memcpy(frame->data[i], src, height * stride);
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} else {
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int j, width;
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uint8_t *dst = frame->data[i];
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if (i == 0) {
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width = avctx->width;
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} else if (i >= 1) {
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width = FFMIN(frame->linesize[i], FFALIGN(avctx->width, 2) / 2);
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}
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for (j = 0; j < height; j++) {
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memcpy(dst, src, width);
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src += stride;
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dst += frame->linesize[i];
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}
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}
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}
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}
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void ff_mediacodec_sw_buffer_copy_yuv420_semi_planar(AVCodecContext *avctx,
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MediaCodecDecContext *s,
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uint8_t *data,
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size_t size,
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FFAMediaCodecBufferInfo *info,
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AVFrame *frame)
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{
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int i;
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uint8_t *src = NULL;
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for (i = 0; i < 2; i++) {
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int height;
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src = data + info->offset;
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if (i == 0) {
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height = avctx->height;
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src += s->crop_top * s->stride;
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src += s->crop_left;
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} else if (i == 1) {
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height = avctx->height / 2;
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src += s->slice_height * s->stride;
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src += s->crop_top * s->stride;
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src += s->crop_left;
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}
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if (frame->linesize[i] == s->stride) {
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memcpy(frame->data[i], src, height * s->stride);
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} else {
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int j, width;
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uint8_t *dst = frame->data[i];
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if (i == 0) {
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width = avctx->width;
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} else if (i == 1) {
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width = FFMIN(frame->linesize[i], FFALIGN(avctx->width, 2));
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}
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for (j = 0; j < height; j++) {
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memcpy(dst, src, width);
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src += s->stride;
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dst += frame->linesize[i];
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}
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}
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}
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}
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void ff_mediacodec_sw_buffer_copy_yuv420_packed_semi_planar(AVCodecContext *avctx,
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MediaCodecDecContext *s,
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uint8_t *data,
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size_t size,
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FFAMediaCodecBufferInfo *info,
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AVFrame *frame)
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{
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int i;
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uint8_t *src = NULL;
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for (i = 0; i < 2; i++) {
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int height;
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src = data + info->offset;
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if (i == 0) {
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height = avctx->height;
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} else if (i == 1) {
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height = avctx->height / 2;
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src += (s->slice_height - s->crop_top / 2) * s->stride;
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src += s->crop_top * s->stride;
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src += s->crop_left;
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}
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if (frame->linesize[i] == s->stride) {
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memcpy(frame->data[i], src, height * s->stride);
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} else {
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int j, width;
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uint8_t *dst = frame->data[i];
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if (i == 0) {
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width = avctx->width;
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} else if (i == 1) {
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width = FFMIN(frame->linesize[i], FFALIGN(avctx->width, 2));
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}
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for (j = 0; j < height; j++) {
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memcpy(dst, src, width);
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src += s->stride;
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dst += frame->linesize[i];
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}
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}
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}
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}
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/**
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* The code handling the QCOM_FormatYUV420PackedSemiPlanar64x32Tile2m8ka
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* color format is taken from the VLC project.
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*
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* VLC reference:
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* http://git.videolan.org/?p=vlc.git;a=blob;f=modules/codec/omxil/qcom.c;hb=HEAD
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*
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* VLC copyright notice:
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*
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*****************************************************************************
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* qcom.c : pixel format translation for Qualcomm tiled nv12
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*****************************************************************************
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* Copyright © 2012 Rafaël Carré
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*
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* Authors: Rafaël Carré <funman@videolanorg>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*
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*/
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static size_t qcom_tile_pos(size_t x, size_t y, size_t w, size_t h)
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{
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size_t flim = x + (y & ~1) * w;
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if (y & 1) {
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flim += (x & ~3) + 2;
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} else if ((h & 1) == 0 || y != (h - 1)) {
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flim += (x + 2) & ~3;
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}
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return flim;
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}
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void ff_mediacodec_sw_buffer_copy_yuv420_packed_semi_planar_64x32Tile2m8ka(AVCodecContext *avctx,
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MediaCodecDecContext *s,
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uint8_t *data,
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size_t size,
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FFAMediaCodecBufferInfo *info,
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AVFrame *frame)
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{
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size_t width = frame->width;
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size_t linesize = frame->linesize[0];
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size_t height = frame->height;
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const size_t tile_w = (width - 1) / QCOM_TILE_WIDTH + 1;
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const size_t tile_w_align = (tile_w + 1) & ~1;
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const size_t tile_h_luma = (height - 1) / QCOM_TILE_HEIGHT + 1;
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const size_t tile_h_chroma = (height / 2 - 1) / QCOM_TILE_HEIGHT + 1;
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size_t luma_size = tile_w_align * tile_h_luma * QCOM_TILE_SIZE;
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if((luma_size % QCOM_TILE_GROUP_SIZE) != 0)
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luma_size = (((luma_size - 1) / QCOM_TILE_GROUP_SIZE) + 1) * QCOM_TILE_GROUP_SIZE;
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for(size_t y = 0; y < tile_h_luma; y++) {
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size_t row_width = width;
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for(size_t x = 0; x < tile_w; x++) {
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size_t tile_width = row_width;
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size_t tile_height = height;
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/* dest luma memory index for this tile */
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size_t luma_idx = y * QCOM_TILE_HEIGHT * linesize + x * QCOM_TILE_WIDTH;
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/* dest chroma memory index for this tile */
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/* XXX: remove divisions */
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size_t chroma_idx = (luma_idx / linesize) * linesize / 2 + (luma_idx % linesize);
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/* luma source pointer for this tile */
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const uint8_t *src_luma = data
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+ qcom_tile_pos(x, y,tile_w_align, tile_h_luma) * QCOM_TILE_SIZE;
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/* chroma source pointer for this tile */
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const uint8_t *src_chroma = data + luma_size
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+ qcom_tile_pos(x, y/2, tile_w_align, tile_h_chroma) * QCOM_TILE_SIZE;
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if (y & 1)
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src_chroma += QCOM_TILE_SIZE/2;
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/* account for right columns */
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if (tile_width > QCOM_TILE_WIDTH)
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tile_width = QCOM_TILE_WIDTH;
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/* account for bottom rows */
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if (tile_height > QCOM_TILE_HEIGHT)
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tile_height = QCOM_TILE_HEIGHT;
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tile_height /= 2;
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while (tile_height--) {
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memcpy(frame->data[0] + luma_idx, src_luma, tile_width);
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src_luma += QCOM_TILE_WIDTH;
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luma_idx += linesize;
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memcpy(frame->data[0] + luma_idx, src_luma, tile_width);
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src_luma += QCOM_TILE_WIDTH;
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luma_idx += linesize;
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memcpy(frame->data[1] + chroma_idx, src_chroma, tile_width);
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src_chroma += QCOM_TILE_WIDTH;
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chroma_idx += linesize;
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}
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row_width -= QCOM_TILE_WIDTH;
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}
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height -= QCOM_TILE_HEIGHT;
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}
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}
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