*/
#include "libavutil/avassert.h"
+#include "internal.h"
#include "msmpeg4data.h"
#include "vc1.h"
#include "mss12.h"
return val;
}
-static int arith2_get_prob(ArithCoder *c, int *probs)
+static int arith2_get_prob(ArithCoder *c, int16_t *probs)
{
int range = c->high - c->low + 1, n = *probs;
int scale = av_log2(range) - av_log2(n);
return 0;
ncol = *buf++;
- if (buf_size < 2 + ncol * 3)
- return -1;
+ if (ncol > ctx->free_colours || buf_size < 2 + ncol * 3)
+ return AVERROR_INVALIDDATA;
for (i = 0; i < ncol; i++)
*pal++ = AV_RB24(buf + 3 * i);
READ_PAIR(y, endy)
if (endx >= w || endy >= h || x > endx || y > endy)
- return -1;
+ return AVERROR_INVALIDDATA;
dst += x + stride * y;
w = endx - x + 1;
h = endy - y + 1;
else
repeat = get_bits(gb, b);
- while (b--)
- repeat += 1 << b;
+ repeat += (1 << b) - 1;
if (last_symbol == -2) {
int skip = FFMIN(repeat, pal_dst + w - pp);
VC1Context *v = avctx->priv_data;
MpegEncContext *s = &v->s;
AVFrame *f;
+ int ret;
ff_mpeg_flush(avctx);
if (s->current_picture_ptr == NULL || s->current_picture_ptr->f.data[0]) {
int i = ff_find_unused_picture(s, 0);
if (i < 0)
- return -1;
+ return i;
s->current_picture_ptr = &s->picture[i];
}
return AVERROR_INVALIDDATA;
}
- avctx->pix_fmt = PIX_FMT_YUV420P;
+ avctx->pix_fmt = AV_PIX_FMT_YUV420P;
- if (ff_MPV_frame_start(s, avctx) < 0) {
+ if ((ret = ff_MPV_frame_start(s, avctx)) < 0) {
av_log(v->s.avctx, AV_LOG_ERROR, "ff_MPV_frame_start error\n");
- avctx->pix_fmt = PIX_FMT_RGB24;
- return -1;
+ avctx->pix_fmt = AV_PIX_FMT_RGB24;
+ return ret;
}
ff_er_frame_start(s);
f->data[1], f->data[2], f->linesize[1],
w, h);
- avctx->pix_fmt = PIX_FMT_RGB24;
+ avctx->pix_fmt = AV_PIX_FMT_RGB24;
return 0;
}
#define MAX_WMV9_RECTANGLES 20
#define ARITH2_PADDING 2
-static int mss2_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
+static int mss2_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
AVPacket *avpkt)
{
const uint8_t *buf = avpkt->data;
int keyframe, has_wmv9, has_mv, is_rle, is_555, ret;
Rectangle wmv9rects[MAX_WMV9_RECTANGLES], *r;
- int used_rects = 0, i, implicit_rect, av_uninit(wmv9_mask);
+ int used_rects = 0, i, implicit_rect = 0, av_uninit(wmv9_mask);
av_assert0(FF_INPUT_BUFFER_PADDING_SIZE >=
ARITH2_PADDING + (MIN_CACHE_BITS + 7) / 8);
if (is_555 && (has_wmv9 || has_mv || c->slice_split && ctx->split_position))
return AVERROR_INVALIDDATA;
- avctx->pix_fmt = is_555 ? PIX_FMT_RGB555 : PIX_FMT_RGB24;
+ avctx->pix_fmt = is_555 ? AV_PIX_FMT_RGB555 : AV_PIX_FMT_RGB24;
if (ctx->pic.data[0] && ctx->pic.format != avctx->pix_fmt)
avctx->release_buffer(avctx, &ctx->pic);
FF_BUFFER_HINTS_PRESERVE |
FF_BUFFER_HINTS_REUSABLE;
- if ((ret = avctx->get_buffer(avctx, &ctx->pic)) < 0) {
+ if ((ret = ff_get_buffer(avctx, &ctx->pic)) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return ret;
}
ctx->last_pic.linesize[0] * (avctx->height - 1);
} else {
av_log(avctx, AV_LOG_ERROR, "Missing keyframe\n");
- return -1;
+ return AVERROR_INVALIDDATA;
}
} else {
if (ctx->last_pic.data[0])
return AVERROR_INVALIDDATA;
buf_size -= bytestream2_tell(&gB);
- } else if (is_rle) {
- init_get_bits(&gb, buf, buf_size * 8);
- if (ret = decode_rle(&gb, c->pal_pic, c->pal_stride,
- c->rgb_pic, c->rgb_stride, c->pal, keyframe,
- ctx->split_position, 0,
- avctx->width, avctx->height))
- return ret;
- align_get_bits(&gb);
-
- if (c->slice_split)
- if (ret = decode_rle(&gb, c->pal_pic, c->pal_stride,
- c->rgb_pic, c->rgb_stride, c->pal, keyframe,
- ctx->split_position, 1,
- avctx->width, avctx->height))
- return ret;
-
- align_get_bits(&gb);
- buf += get_bits_count(&gb) >> 3;
- buf_size -= get_bits_count(&gb) >> 3;
} else {
if (keyframe) {
c->corrupted = 0;
if (c->slice_split)
ff_mss12_slicecontext_reset(&ctx->sc[1]);
}
- else if (c->corrupted)
- return AVERROR_INVALIDDATA;
- bytestream2_init(&gB, buf, buf_size + ARITH2_PADDING);
- arith2_init(&acoder, &gB);
- c->keyframe = keyframe;
- if (c->corrupted = ff_mss12_decode_rect(&ctx->sc[0], &acoder, 0, 0,
- avctx->width,
- ctx->split_position))
- return AVERROR_INVALIDDATA;
+ if (is_rle) {
+ init_get_bits(&gb, buf, buf_size * 8);
+ if (ret = decode_rle(&gb, c->pal_pic, c->pal_stride,
+ c->rgb_pic, c->rgb_stride, c->pal, keyframe,
+ ctx->split_position, 0,
+ avctx->width, avctx->height))
+ return ret;
+ align_get_bits(&gb);
- buf += arith2_get_consumed_bytes(&acoder);
- buf_size -= arith2_get_consumed_bytes(&acoder);
- if (c->slice_split) {
- if (buf_size < 1)
+ if (c->slice_split)
+ if (ret = decode_rle(&gb, c->pal_pic, c->pal_stride,
+ c->rgb_pic, c->rgb_stride, c->pal, keyframe,
+ ctx->split_position, 1,
+ avctx->width, avctx->height))
+ return ret;
+
+ align_get_bits(&gb);
+ buf += get_bits_count(&gb) >> 3;
+ buf_size -= get_bits_count(&gb) >> 3;
+ } else if (!implicit_rect || wmv9_mask != -1) {
+ if (c->corrupted)
return AVERROR_INVALIDDATA;
bytestream2_init(&gB, buf, buf_size + ARITH2_PADDING);
arith2_init(&acoder, &gB);
- if (c->corrupted = ff_mss12_decode_rect(&ctx->sc[1], &acoder, 0,
- ctx->split_position,
+ c->keyframe = keyframe;
+ if (c->corrupted = ff_mss12_decode_rect(&ctx->sc[0], &acoder, 0, 0,
avctx->width,
- avctx->height - ctx->split_position))
+ ctx->split_position))
return AVERROR_INVALIDDATA;
buf += arith2_get_consumed_bytes(&acoder);
buf_size -= arith2_get_consumed_bytes(&acoder);
- }
+ if (c->slice_split) {
+ if (buf_size < 1)
+ return AVERROR_INVALIDDATA;
+ bytestream2_init(&gB, buf, buf_size + ARITH2_PADDING);
+ arith2_init(&acoder, &gB);
+ if (c->corrupted = ff_mss12_decode_rect(&ctx->sc[1], &acoder, 0,
+ ctx->split_position,
+ avctx->width,
+ avctx->height - ctx->split_position))
+ return AVERROR_INVALIDDATA;
+
+ buf += arith2_get_consumed_bytes(&acoder);
+ buf_size -= arith2_get_consumed_bytes(&acoder);
+ }
+ } else
+ memset(c->pal_pic, 0, c->pal_stride * avctx->height);
}
if (has_wmv9) {
if (buf_size)
av_log(avctx, AV_LOG_WARNING, "buffer not fully consumed\n");
- *data_size = sizeof(AVFrame);
+ *got_frame = 1;
*(AVFrame *)data = ctx->pic;
return avpkt->size;
static av_cold int wmv9_init(AVCodecContext *avctx)
{
VC1Context *v = avctx->priv_data;
+ int ret;
v->s.avctx = avctx;
avctx->flags |= CODEC_FLAG_EMU_EDGE;
v->s.flags |= CODEC_FLAG_EMU_EDGE;
- if (avctx->idct_algo == FF_IDCT_AUTO)
- avctx->idct_algo = FF_IDCT_WMV2;
-
- if (ff_vc1_init_common(v) < 0)
- return -1;
+ if ((ret = ff_vc1_init_common(v)) < 0)
+ return ret;
ff_vc1dsp_init(&v->vc1dsp);
v->profile = PROFILE_MAIN;
ff_vc1_init_transposed_scantables(v);
- if (ff_msmpeg4_decode_init(avctx) < 0 ||
- ff_vc1_decode_init_alloc_tables(v) < 0)
- return -1;
+ if ((ret = ff_msmpeg4_decode_init(avctx)) < 0 ||
+ (ret = ff_vc1_decode_init_alloc_tables(v)) < 0)
+ return ret;
/* error concealment */
v->s.me.qpel_put = v->s.dsp.put_qpel_pixels_tab;
if (ret = ff_mss12_decode_init(c, 1, &ctx->sc[0], &ctx->sc[1]))
return ret;
c->pal_stride = c->mask_stride;
- c->pal_pic = av_malloc(c->pal_stride * avctx->height);
- c->last_pal_pic = av_malloc(c->pal_stride * avctx->height);
+ c->pal_pic = av_mallocz(c->pal_stride * avctx->height);
+ c->last_pal_pic = av_mallocz(c->pal_stride * avctx->height);
if (!c->pal_pic || !c->last_pal_pic) {
mss2_decode_end(avctx);
return AVERROR(ENOMEM);
}
ff_mss2dsp_init(&ctx->dsp);
- avctx->pix_fmt = c->free_colours == 127 ? PIX_FMT_RGB555
- : PIX_FMT_RGB24;
+ avctx->pix_fmt = c->free_colours == 127 ? AV_PIX_FMT_RGB555
+ : AV_PIX_FMT_RGB24;
return 0;
}
projects / ffmpeg / blobdiff