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-rw-r--r--media/ffvpx/libavcodec/imgconvert.c232
1 files changed, 232 insertions, 0 deletions
diff --git a/media/ffvpx/libavcodec/imgconvert.c b/media/ffvpx/libavcodec/imgconvert.c
new file mode 100644
index 0000000000..1fd636c83d
--- /dev/null
+++ b/media/ffvpx/libavcodec/imgconvert.c
@@ -0,0 +1,232 @@
+/*
+ * Misc image conversion routines
+ * Copyright (c) 2001, 2002, 2003 Fabrice Bellard
+ *
+ * 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
+ */
+
+/**
+ * @file
+ * misc image conversion routines
+ */
+
+#include "avcodec.h"
+#include "internal.h"
+#include "mathops.h"
+#include "libavutil/avassert.h"
+#include "libavutil/colorspace.h"
+#include "libavutil/common.h"
+#include "libavutil/pixdesc.h"
+#include "libavutil/internal.h"
+#include "libavutil/imgutils.h"
+
+#if FF_API_GETCHROMA
+void avcodec_get_chroma_sub_sample(enum AVPixelFormat pix_fmt, int *h_shift, int *v_shift)
+{
+ const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
+ av_assert0(desc);
+ *h_shift = desc->log2_chroma_w;
+ *v_shift = desc->log2_chroma_h;
+}
+#endif
+
+int avcodec_get_pix_fmt_loss(enum AVPixelFormat dst_pix_fmt,
+ enum AVPixelFormat src_pix_fmt,
+ int has_alpha)
+{
+ return av_get_pix_fmt_loss(dst_pix_fmt, src_pix_fmt, has_alpha);
+}
+
+enum AVPixelFormat avcodec_find_best_pix_fmt_of_2(enum AVPixelFormat dst_pix_fmt1, enum AVPixelFormat dst_pix_fmt2,
+ enum AVPixelFormat src_pix_fmt, int has_alpha, int *loss_ptr)
+{
+ return av_find_best_pix_fmt_of_2(dst_pix_fmt1, dst_pix_fmt2, src_pix_fmt, has_alpha, loss_ptr);
+}
+
+enum AVPixelFormat avcodec_find_best_pix_fmt2(enum AVPixelFormat dst_pix_fmt1, enum AVPixelFormat dst_pix_fmt2,
+ enum AVPixelFormat src_pix_fmt, int has_alpha, int *loss_ptr)
+{
+ return avcodec_find_best_pix_fmt_of_2(dst_pix_fmt1, dst_pix_fmt2, src_pix_fmt, has_alpha, loss_ptr);
+}
+
+enum AVPixelFormat avcodec_find_best_pix_fmt_of_list(const enum AVPixelFormat *pix_fmt_list,
+ enum AVPixelFormat src_pix_fmt,
+ int has_alpha, int *loss_ptr){
+ int i;
+
+ enum AVPixelFormat best = AV_PIX_FMT_NONE;
+ int loss;
+
+ for (i=0; pix_fmt_list[i] != AV_PIX_FMT_NONE; i++) {
+ loss = loss_ptr ? *loss_ptr : 0;
+ best = avcodec_find_best_pix_fmt_of_2(best, pix_fmt_list[i], src_pix_fmt, has_alpha, &loss);
+ }
+
+ if (loss_ptr)
+ *loss_ptr = loss;
+ return best;
+}
+
+#if FF_API_AVPICTURE
+FF_DISABLE_DEPRECATION_WARNINGS
+/* return true if yuv planar */
+static inline int is_yuv_planar(const AVPixFmtDescriptor *desc)
+{
+ int i;
+ int planes[4] = { 0 };
+
+ if ( desc->flags & AV_PIX_FMT_FLAG_RGB
+ || !(desc->flags & AV_PIX_FMT_FLAG_PLANAR))
+ return 0;
+
+ /* set the used planes */
+ for (i = 0; i < desc->nb_components; i++)
+ planes[desc->comp[i].plane] = 1;
+
+ /* if there is an unused plane, the format is not planar */
+ for (i = 0; i < desc->nb_components; i++)
+ if (!planes[i])
+ return 0;
+ return 1;
+}
+
+int av_picture_crop(AVPicture *dst, const AVPicture *src,
+ enum AVPixelFormat pix_fmt, int top_band, int left_band)
+{
+ const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
+ int y_shift;
+ int x_shift;
+ int max_step[4];
+
+ if (pix_fmt < 0 || pix_fmt >= AV_PIX_FMT_NB)
+ return -1;
+
+ y_shift = desc->log2_chroma_h;
+ x_shift = desc->log2_chroma_w;
+ av_image_fill_max_pixsteps(max_step, NULL, desc);
+
+ if (is_yuv_planar(desc)) {
+ dst->data[0] = src->data[0] + (top_band * src->linesize[0]) + left_band;
+ dst->data[1] = src->data[1] + ((top_band >> y_shift) * src->linesize[1]) + (left_band >> x_shift);
+ dst->data[2] = src->data[2] + ((top_band >> y_shift) * src->linesize[2]) + (left_band >> x_shift);
+ } else{
+ if(top_band % (1<<y_shift) || left_band % (1<<x_shift))
+ return -1;
+ dst->data[0] = src->data[0] + (top_band * src->linesize[0]) + (left_band * max_step[0]);
+ }
+
+ dst->linesize[0] = src->linesize[0];
+ dst->linesize[1] = src->linesize[1];
+ dst->linesize[2] = src->linesize[2];
+ return 0;
+}
+
+int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width,
+ enum AVPixelFormat pix_fmt, int padtop, int padbottom, int padleft, int padright,
+ int *color)
+{
+ const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
+ uint8_t *optr;
+ int y_shift;
+ int x_shift;
+ int yheight;
+ int i, y;
+ int max_step[4];
+
+ if (pix_fmt < 0 || pix_fmt >= AV_PIX_FMT_NB)
+ return -1;
+
+ if (!is_yuv_planar(desc)) {
+ if (src)
+ return -1; //TODO: Not yet implemented
+
+ av_image_fill_max_pixsteps(max_step, NULL, desc);
+
+ if (padtop || padleft) {
+ memset(dst->data[0], color[0],
+ dst->linesize[0] * padtop + (padleft * max_step[0]));
+ }
+
+ if (padleft || padright) {
+ optr = dst->data[0] + dst->linesize[0] * padtop +
+ (dst->linesize[0] - (padright * max_step[0]));
+ yheight = height - 1 - (padtop + padbottom);
+ for (y = 0; y < yheight; y++) {
+ memset(optr, color[0], (padleft + padright) * max_step[0]);
+ optr += dst->linesize[0];
+ }
+ }
+
+ if (padbottom || padright) {
+ optr = dst->data[0] + dst->linesize[0] * (height - padbottom) -
+ (padright * max_step[0]);
+ memset(optr, color[0], dst->linesize[0] * padbottom +
+ (padright * max_step[0]));
+ }
+
+ return 0;
+ }
+
+ for (i = 0; i < 3; i++) {
+ x_shift = i ? desc->log2_chroma_w : 0;
+ y_shift = i ? desc->log2_chroma_h : 0;
+
+ if (padtop || padleft) {
+ memset(dst->data[i], color[i],
+ dst->linesize[i] * (padtop >> y_shift) + (padleft >> x_shift));
+ }
+
+ if (padleft || padright) {
+ optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
+ (dst->linesize[i] - (padright >> x_shift));
+ yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
+ for (y = 0; y < yheight; y++) {
+ memset(optr, color[i], (padleft + padright) >> x_shift);
+ optr += dst->linesize[i];
+ }
+ }
+
+ if (src) { /* first line */
+ uint8_t *iptr = src->data[i];
+ optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
+ (padleft >> x_shift);
+ memcpy(optr, iptr, (width - padleft - padright) >> x_shift);
+ iptr += src->linesize[i];
+ optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
+ (dst->linesize[i] - (padright >> x_shift));
+ yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
+ for (y = 0; y < yheight; y++) {
+ memset(optr, color[i], (padleft + padright) >> x_shift);
+ memcpy(optr + ((padleft + padright) >> x_shift), iptr,
+ (width - padleft - padright) >> x_shift);
+ iptr += src->linesize[i];
+ optr += dst->linesize[i];
+ }
+ }
+
+ if (padbottom || padright) {
+ optr = dst->data[i] + dst->linesize[i] *
+ ((height - padbottom) >> y_shift) - (padright >> x_shift);
+ memset(optr, color[i],dst->linesize[i] *
+ (padbottom >> y_shift) + (padright >> x_shift));
+ }
+ }
+
+ return 0;
+}
+FF_ENABLE_DEPRECATION_WARNINGS
+#endif /* FF_API_AVPICTURE */
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