Commit 2c910625 authored by Michael Niedermayer's avatar Michael Niedermayer

avcodec/mpeg4videodec: Workaround interlaced mpeg4 edge MC bug

Signed-off-by: 's avatarMichael Niedermayer <michael@niedermayer.cc>
parent 85407c7e
......@@ -2878,6 +2878,7 @@ typedef struct AVCodecContext {
#define FF_BUG_DC_CLIP 4096
#define FF_BUG_MS 8192 ///< Work around various bugs in Microsoft's broken decoders.
#define FF_BUG_TRUNCATED 16384
#define FF_BUG_IEDGE 32768
/**
* strictly follow the standard (MPEG-4, ...).
......
......@@ -2195,6 +2195,13 @@ int ff_mpeg4_workaround_bugs(AVCodecContext *avctx)
if (ctx->lavc_build <= 4712U)
s->workaround_bugs |= FF_BUG_DC_CLIP;
if ((ctx->lavc_build&0xFF) >= 100) {
if (ctx->lavc_build > 3621476 && ctx->lavc_build < 3752552 &&
(ctx->lavc_build < 3752037 || ctx->lavc_build > 3752191) // 3.2.1+
)
s->workaround_bugs |= FF_BUG_IEDGE;
}
if (ctx->divx_version >= 0)
s->workaround_bugs |= FF_BUG_DIRECT_BLOCKSIZE;
if (ctx->divx_version == 501 && ctx->divx_build == 20020416)
......
......@@ -2117,6 +2117,8 @@ static av_always_inline void mpeg_motion_lowres(MpegEncContext *s,
if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
uint8_t *ubuf = s->sc.edge_emu_buffer + 18 * s->linesize;
uint8_t *vbuf =ubuf + 10 * s->uvlinesize;
if (s->workaround_bugs & FF_BUG_IEDGE)
vbuf -= s->uvlinesize;
s->vdsp.emulated_edge_mc(ubuf, ptr_cb,
uvlinesize >> field_based, uvlinesize >> field_based,
9, 9 + field_based,
......
......@@ -327,6 +327,8 @@ void mpeg_motion_internal(MpegEncContext *s,
if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
uint8_t *ubuf = s->sc.edge_emu_buffer + 18 * s->linesize;
uint8_t *vbuf = ubuf + 10 * s->uvlinesize;
if (s->workaround_bugs & FF_BUG_IEDGE)
vbuf -= s->uvlinesize;
uvsrc_y = (unsigned)uvsrc_y << field_based;
s->vdsp.emulated_edge_mc(ubuf, ptr_cb,
s->uvlinesize, s->uvlinesize,
......@@ -550,6 +552,8 @@ static inline void qpel_motion(MpegEncContext *s,
if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
uint8_t *ubuf = s->sc.edge_emu_buffer + 18 * s->linesize;
uint8_t *vbuf = ubuf + 10 * s->uvlinesize;
if (s->workaround_bugs & FF_BUG_IEDGE)
vbuf -= s->uvlinesize;
s->vdsp.emulated_edge_mc(ubuf, ptr_cb,
s->uvlinesize, s->uvlinesize,
9, 9 + field_based,
......
......@@ -163,6 +163,7 @@ static const AVOption avcodec_options[] = {
{"dc_clip", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_BUG_DC_CLIP }, INT_MIN, INT_MAX, V|D, "bug"},
{"ms", "work around various bugs in Microsoft's broken decoders", 0, AV_OPT_TYPE_CONST, {.i64 = FF_BUG_MS }, INT_MIN, INT_MAX, V|D, "bug"},
{"trunc", "truncated frames", 0, AV_OPT_TYPE_CONST, {.i64 = FF_BUG_TRUNCATED}, INT_MIN, INT_MAX, V|D, "bug"},
{"iedge", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_BUG_IEDGE }, INT_MIN, INT_MAX, V|D, "bug"},
{"strict", "how strictly to follow the standards", OFFSET(strict_std_compliance), AV_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, A|V|D|E, "strict"},
{"very", "strictly conform to a older more strict version of the spec or reference software", 0, AV_OPT_TYPE_CONST, {.i64 = FF_COMPLIANCE_VERY_STRICT }, INT_MIN, INT_MAX, A|V|D|E, "strict"},
{"strict", "strictly conform to all the things in the spec no matter what the consequences", 0, AV_OPT_TYPE_CONST, {.i64 = FF_COMPLIANCE_STRICT }, INT_MIN, INT_MAX, A|V|D|E, "strict"},
......
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