* Quicktime Video (RPZA) Video Decoder
* Copyright (C) 2003 the ffmpeg project
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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,
+ * Libav 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
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
*/
/**
- * @file rpza.c
- * QT RPZA Video Decoder by Roberto Togni <rtogni@bresciaonline.it>
+ * @file
+ * QT RPZA Video Decoder by Roberto Togni
* For more information about the RPZA format, visit:
* http://www.pcisys.net/~melanson/codecs/
*
* Note that this decoder reads big endian RGB555 pixel values from the
* bytestream, arranges them in the host's endian order, and outputs
* them to the final rendered map in the same host endian order. This is
- * intended behavior as the ffmpeg documentation states that RGB555 pixels
- * shall be stored in native CPU endianness.
+ * intended behavior as the libavcodec documentation states that RGB555
+ * pixels shall be stored in native CPU endianness.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-#include <unistd.h>
-#include "common.h"
+#include "libavutil/internal.h"
+#include "libavutil/intreadwrite.h"
#include "avcodec.h"
-#include "dsputil.h"
+#include "internal.h"
typedef struct RpzaContext {
AVCodecContext *avctx;
- DSPContext dsp;
- AVFrame frame;
+ AVFrame *frame;
- unsigned char *buf;
+ const unsigned char *buf;
int size;
} RpzaContext;
static void rpza_decode_stream(RpzaContext *s)
{
int width = s->avctx->width;
- int stride = s->frame.linesize[0] / 2;
+ int stride = s->frame->linesize[0] / 2;
int row_inc = stride - 4;
int stream_ptr = 0;
int chunk_size;
unsigned short color4[4];
unsigned char index, idx;
unsigned short ta, tb;
- unsigned short *pixels = (unsigned short *)s->frame.data[0];
+ unsigned short *pixels = (unsigned short *)s->frame->data[0];
int row_ptr = 0;
int pixel_ptr = 0;
color4[1] |= ((11 * ta + 21 * tb) >> 5);
color4[2] |= ((21 * ta + 11 * tb) >> 5);
+ if (s->size - stream_ptr < n_blocks * 4)
+ return;
while (n_blocks--) {
block_ptr = row_ptr + pixel_ptr;
for (pixel_y = 0; pixel_y < 4; pixel_y++) {
/* Fill block with 16 colors */
case 0x00:
+ if (s->size - stream_ptr < 30)
+ return;
block_ptr = row_ptr + pixel_ptr;
for (pixel_y = 0; pixel_y < 4; pixel_y++) {
for (pixel_x = 0; pixel_x < 4; pixel_x++){
}
}
-static int rpza_decode_init(AVCodecContext *avctx)
+static av_cold int rpza_decode_init(AVCodecContext *avctx)
{
- RpzaContext *s = (RpzaContext *)avctx->priv_data;
+ RpzaContext *s = avctx->priv_data;
s->avctx = avctx;
- avctx->pix_fmt = PIX_FMT_RGB555;
- dsputil_init(&s->dsp, avctx);
+ avctx->pix_fmt = AV_PIX_FMT_RGB555;
- s->frame.data[0] = NULL;
+ s->frame = av_frame_alloc();
+ if (!s->frame)
+ return AVERROR(ENOMEM);
return 0;
}
static int rpza_decode_frame(AVCodecContext *avctx,
- void *data, int *data_size,
- uint8_t *buf, int buf_size)
+ void *data, int *got_frame,
+ AVPacket *avpkt)
{
- RpzaContext *s = (RpzaContext *)avctx->priv_data;
+ const uint8_t *buf = avpkt->data;
+ int buf_size = avpkt->size;
+ RpzaContext *s = avctx->priv_data;
+ int ret;
s->buf = buf;
s->size = buf_size;
- s->frame.reference = 1;
- s->frame.buffer_hints = FF_BUFFER_HINTS_VALID | FF_BUFFER_HINTS_PRESERVE | FF_BUFFER_HINTS_REUSABLE;
- if (avctx->reget_buffer(avctx, &s->frame)) {
+ if ((ret = ff_reget_buffer(avctx, s->frame)) < 0) {
av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
- return -1;
+ return ret;
}
rpza_decode_stream(s);
- *data_size = sizeof(AVFrame);
- *(AVFrame*)data = s->frame;
+ if ((ret = av_frame_ref(data, s->frame)) < 0)
+ return ret;
+
+ *got_frame = 1;
/* always report that the buffer was completely consumed */
return buf_size;
}
-static int rpza_decode_end(AVCodecContext *avctx)
+static av_cold int rpza_decode_end(AVCodecContext *avctx)
{
- RpzaContext *s = (RpzaContext *)avctx->priv_data;
+ RpzaContext *s = avctx->priv_data;
- if (s->frame.data[0])
- avctx->release_buffer(avctx, &s->frame);
+ av_frame_free(&s->frame);
return 0;
}
-AVCodec rpza_decoder = {
- "rpza",
- CODEC_TYPE_VIDEO,
- CODEC_ID_RPZA,
- sizeof(RpzaContext),
- rpza_decode_init,
- NULL,
- rpza_decode_end,
- rpza_decode_frame,
- CODEC_CAP_DR1,
+AVCodec ff_rpza_decoder = {
+ .name = "rpza",
+ .long_name = NULL_IF_CONFIG_SMALL("QuickTime video (RPZA)"),
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = AV_CODEC_ID_RPZA,
+ .priv_data_size = sizeof(RpzaContext),
+ .init = rpza_decode_init,
+ .close = rpza_decode_end,
+ .decode = rpza_decode_frame,
+ .capabilities = CODEC_CAP_DR1,
};
projects / ffmpeg / blobdiff