Update ffmpeg to 7.1.1

submodules/ffmpeg/Sources/FFMpeg/ffmpeg-7.1.1/libavcodec/bitpacked_dec.c

@@ -0,0 +1,151 @@
+/*
+ * Unpack bit-packed streams to formats supported by FFmpeg
+ * Copyright (c) 2017 Savoir-faire Linux, Inc
+ *
+ * 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
+ */
+
+/* Development sponsored by CBC/Radio-Canada */
+
+/**
+ * @file
+ * Bitpacked
+ */
+
+#include "avcodec.h"
+#include "codec_internal.h"
+#include "libavutil/imgutils.h"
+#include "thread.h"
+
+struct BitpackedContext {
+    int (*decode)(AVCodecContext *avctx, AVFrame *frame,
+                  const AVPacket *pkt);
+};
+
+/* For this format, it's a simple passthrough */
+static int bitpacked_decode_uyvy422(AVCodecContext *avctx, AVFrame *frame,
+                                    const AVPacket *avpkt)
+{
+    int ret;
+
+    /* there is no need to copy as the data already match
+     * a known pixel format */
+    frame->buf[0] = av_buffer_ref(avpkt->buf);
+    if (!frame->buf[0]) {
+        return AVERROR(ENOMEM);
+    }
+
+    ret = av_image_fill_arrays(frame->data, frame->linesize, avpkt->data,
+                               avctx->pix_fmt, avctx->width, avctx->height, 1);
+    if (ret < 0) {
+        av_buffer_unref(&frame->buf[0]);
+        return ret;
+    }
+
+    return 0;
+}
+
+static int bitpacked_decode_yuv422p10(AVCodecContext *avctx, AVFrame *frame,
+                                      const AVPacket *avpkt)
+{
+    uint64_t frame_size = (uint64_t)avctx->width * (uint64_t)avctx->height * 20;
+    uint64_t packet_size = (uint64_t)avpkt->size * 8;
+    uint8_t *src;
+    uint16_t *y, *u, *v;
+    int ret, i, j;
+
+    ret = ff_thread_get_buffer(avctx, frame, 0);
+    if (ret < 0)
+        return ret;
+
+    if (frame_size > packet_size)
+        return AVERROR_INVALIDDATA;
+
+    if (avctx->width % 2)
+        return AVERROR_PATCHWELCOME;
+
+    src = avpkt->data;
+    for (i = 0; i < avctx->height; i++) {
+        y = (uint16_t*)(frame->data[0] + i * frame->linesize[0]);
+        u = (uint16_t*)(frame->data[1] + i * frame->linesize[1]);
+        v = (uint16_t*)(frame->data[2] + i * frame->linesize[2]);
+
+        for (j = 0; j < avctx->width; j += 2) {
+            *u++ = (src[0] << 2) | (src[1] >> 6);
+            *v++ = ((src[2] << 6) | (src[3] >> 2)) & 0x3ff;
+            *y++ = ((src[1] << 4) | (src[2] >> 4)) & 0x3ff;
+            *y++ = ((src[3] << 8) | (src[4]))      & 0x3ff;
+            src += 5;
+        }
+    }
+
+    return 0;
+}
+
+static av_cold int bitpacked_init_decoder(AVCodecContext *avctx)
+{
+    struct BitpackedContext *bc = avctx->priv_data;
+
+    if (!avctx->codec_tag || !avctx->width || !avctx->height)
+        return AVERROR_INVALIDDATA;
+
+    if (avctx->codec_tag == MKTAG('U', 'Y', 'V', 'Y')) {
+        if (avctx->bits_per_coded_sample == 16 &&
+            avctx->pix_fmt == AV_PIX_FMT_UYVY422)
+            bc->decode = bitpacked_decode_uyvy422;
+        else if (avctx->bits_per_coded_sample == 20 &&
+                 avctx->pix_fmt == AV_PIX_FMT_YUV422P10)
+            bc->decode = bitpacked_decode_yuv422p10;
+        else
+            return AVERROR_INVALIDDATA;
+    } else {
+        return AVERROR_INVALIDDATA;
+    }
+
+    return 0;
+}
+
+static int bitpacked_decode(AVCodecContext *avctx, AVFrame *frame,
+                            int *got_frame, AVPacket *avpkt)
+{
+    struct BitpackedContext *bc = avctx->priv_data;
+    int buf_size = avpkt->size;
+    int res;
+
+    res = bc->decode(avctx, frame, avpkt);
+    if (res)
+        return res;
+
+    *got_frame = 1;
+    return buf_size;
+
+}
+
+const FFCodec ff_bitpacked_decoder = {
+    .p.name          = "bitpacked",
+    CODEC_LONG_NAME("Bitpacked"),
+    .p.type          = AVMEDIA_TYPE_VIDEO,
+    .p.id            = AV_CODEC_ID_BITPACKED,
+    .p.capabilities  = AV_CODEC_CAP_FRAME_THREADS,
+    .priv_data_size        = sizeof(struct BitpackedContext),
+    .init = bitpacked_init_decoder,
+    FF_CODEC_DECODE_CB(bitpacked_decode),
+    .codec_tags     = (const uint32_t []){
+        MKTAG('U', 'Y', 'V', 'Y'),
+        FF_CODEC_TAGS_END,
+    },
+};