* Bitmap Brothers JV video decoder
* Copyright (c) 2011 Peter Ross <pross@xvid.org>
*
- * 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
*/
* @author Peter Ross <pross@xvid.org>
*/
+#include "libavutil/intreadwrite.h"
+
#include "avcodec.h"
-#include "dsputil.h"
+#include "blockdsp.h"
#include "get_bits.h"
-#include "libavutil/intreadwrite.h"
+#include "internal.h"
typedef struct JvContext {
- DSPContext dsp;
- AVFrame frame;
+ BlockDSPContext bdsp;
+ AVFrame *frame;
uint32_t palette[AVPALETTE_COUNT];
int palette_has_changed;
} JvContext;
static av_cold int decode_init(AVCodecContext *avctx)
{
JvContext *s = avctx->priv_data;
- avctx->pix_fmt = PIX_FMT_PAL8;
- dsputil_init(&s->dsp, avctx);
+
+ s->frame = av_frame_alloc();
+ if (!s->frame)
+ return AVERROR(ENOMEM);
+
+ avctx->pix_fmt = AV_PIX_FMT_PAL8;
+ ff_blockdsp_init(&s->bdsp, avctx);
return 0;
}
case 1:
v[0] = get_bits(gb, 8);
for (j = 0; j < 2; j++)
- memset(dst + j*linesize, v[0], 2);
+ memset(dst + j * linesize, v[0], 2);
break;
case 2:
v[0] = get_bits(gb, 8);
v[1] = get_bits(gb, 8);
for (j = 0; j < 2; j++)
for (i = 0; i < 2; i++)
- dst[j*linesize + i] = v[get_bits1(gb)];
+ dst[j * linesize + i] = v[get_bits1(gb)];
break;
case 3:
for (j = 0; j < 2; j++)
for (i = 0; i < 2; i++)
- dst[j*linesize + i] = get_bits(gb, 8);
+ dst[j * linesize + i] = get_bits(gb, 8);
}
}
case 1:
v[0] = get_bits(gb, 8);
for (j = 0; j < 4; j++)
- memset(dst + j*linesize, v[0], 4);
+ memset(dst + j * linesize, v[0], 4);
break;
case 2:
v[0] = get_bits(gb, 8);
v[1] = get_bits(gb, 8);
for (j = 2; j >= 0; j -= 2) {
for (i = 0; i < 4; i++)
- dst[j*linesize + i] = v[get_bits1(gb)];
+ dst[j * linesize + i] = v[get_bits1(gb)];
for (i = 0; i < 4; i++)
- dst[(j+1)*linesize + i] = v[get_bits1(gb)];
+ dst[(j + 1) * linesize + i] = v[get_bits1(gb)];
}
break;
case 3:
for (j = 0; j < 4; j += 2)
for (i = 0; i < 4; i += 2)
- decode2x2(gb, dst + j*linesize + i, linesize);
+ decode2x2(gb, dst + j * linesize + i, linesize);
}
}
/**
* Decode 8x8 block
*/
-static inline void decode8x8(GetBitContext *gb, uint8_t *dst, int linesize, DSPContext *dsp)
+static inline void decode8x8(GetBitContext *gb, uint8_t *dst, int linesize,
+ BlockDSPContext *bdsp)
{
int i, j, v[2];
switch (get_bits(gb, 2)) {
case 1:
v[0] = get_bits(gb, 8);
- dsp->fill_block_tab[1](dst, v[0], linesize, 8);
+ bdsp->fill_block_tab[1](dst, v[0], linesize, 8);
break;
case 2:
v[0] = get_bits(gb, 8);
v[1] = get_bits(gb, 8);
for (j = 7; j >= 0; j--)
- for (i = 0; i < 8; i++)
- dst[j*linesize + i] = v[get_bits1(gb)];
+ for (i = 0; i < 8; i++)
+ dst[j * linesize + i] = v[get_bits1(gb)];
break;
case 3:
for (j = 0; j < 8; j += 4)
for (i = 0; i < 8; i += 4)
- decode4x4(gb, dst + j*linesize + i, linesize);
+ decode4x4(gb, dst + j * linesize + i, linesize);
}
}
-static int decode_frame(AVCodecContext *avctx,
- void *data, int *data_size,
+static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
AVPacket *avpkt)
{
- JvContext *s = avctx->priv_data;
- int buf_size = avpkt->size;
- const uint8_t *buf = avpkt->data;
+ JvContext *s = avctx->priv_data;
+ int buf_size = avpkt->size;
+ const uint8_t *buf = avpkt->data;
const uint8_t *buf_end = buf + buf_size;
- int video_size, video_type, i, j;
+ int video_size, video_type, i, j, ret;
video_size = AV_RL32(buf);
video_type = buf[4];
buf += 5;
if (video_size) {
- if (avctx->reget_buffer(avctx, &s->frame) < 0) {
+ if ((ret = ff_reget_buffer(avctx, s->frame)) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
- return -1;
+ return ret;
}
if (video_type == 0 || video_type == 1) {
GetBitContext gb;
- init_get_bits(&gb, buf, FFMIN(video_size, buf_end - buf));
+ init_get_bits(&gb, buf, 8 * FFMIN(video_size, buf_end - buf));
for (j = 0; j < avctx->height; j += 8)
for (i = 0; i < avctx->width; i += 8)
- decode8x8(&gb, s->frame.data[0] + j*s->frame.linesize[0] + i,
- s->frame.linesize[0], &s->dsp);
+ decode8x8(&gb,
+ s->frame->data[0] + j * s->frame->linesize[0] + i,
+ s->frame->linesize[0], &s->bdsp);
buf += video_size;
} else if (video_type == 2) {
if (buf + 1 <= buf_end) {
int v = *buf++;
for (j = 0; j < avctx->height; j++)
- memset(s->frame.data[0] + j*s->frame.linesize[0], v, avctx->width);
+ memset(s->frame->data[0] + j * s->frame->linesize[0],
+ v, avctx->width);
}
} else {
- av_log(avctx, AV_LOG_WARNING, "unsupported frame type %i\n", video_type);
+ av_log(avctx, AV_LOG_WARNING,
+ "unsupported frame type %i\n", video_type);
return AVERROR_INVALIDDATA;
}
}
}
if (video_size) {
- s->frame.key_frame = 1;
- s->frame.pict_type = FF_I_TYPE;
- s->frame.palette_has_changed = s->palette_has_changed;
- s->palette_has_changed = 0;
- memcpy(s->frame.data[1], s->palette, AVPALETTE_SIZE);
-
- *data_size = sizeof(AVFrame);
- *(AVFrame*)data = s->frame;
+ s->frame->key_frame = 1;
+ s->frame->pict_type = AV_PICTURE_TYPE_I;
+ s->frame->palette_has_changed = s->palette_has_changed;
+ s->palette_has_changed = 0;
+ memcpy(s->frame->data[1], s->palette, AVPALETTE_SIZE);
+
+ if ((ret = av_frame_ref(data, s->frame)) < 0)
+ return ret;
+ *got_frame = 1;
}
return buf_size;
{
JvContext *s = avctx->priv_data;
- if(s->frame.data[0])
- avctx->release_buffer(avctx, &s->frame);
+ av_frame_free(&s->frame);
return 0;
}
AVCodec ff_jv_decoder = {
.name = "jv",
.long_name = NULL_IF_CONFIG_SMALL("Bitmap Brothers JV video"),
- .type = CODEC_TYPE_VIDEO,
- .id = CODEC_ID_JV,
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = AV_CODEC_ID_JV,
.priv_data_size = sizeof(JvContext),
.init = decode_init,
.close = decode_close,