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-rw-r--r--libavcodec/mediacodec_sw_buffer.c339
1 files changed, 339 insertions, 0 deletions
diff --git a/libavcodec/mediacodec_sw_buffer.c b/libavcodec/mediacodec_sw_buffer.c
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+++ b/libavcodec/mediacodec_sw_buffer.c
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+/*
+ * 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 "mediacodec_wrapper.h"
+#include "mediacodec_sw_buffer.h"
+#include "mediacodecdec_common.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)
+
+/**
+ * The code handling the various YUV color formats is taken from the
+ * 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;
+ } else if (i >= 1) {
+ width = FFMIN(frame->linesize[i], FFALIGN(avctx->width, 2) / 2);
+ }
+
+ 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;
+ }
+}
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