/*
* MPEG-1/2 decoder
* Copyright (c) 2000, 2001 Fabrice Bellard
- * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
+ * Copyright (c) 2002-2013 Michael Niedermayer <michaelni@gmx.at>
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * 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.
*
- * Libav is distributed in the hope that it will be useful,
+ * 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 Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
* MPEG-1/2 decoder
*/
+#define UNCHECKED_BITSTREAM_READER 1
#include <inttypes.h>
#include "libavutil/attributes.h"
+#include "libavutil/imgutils.h"
#include "libavutil/internal.h"
#include "libavutil/stereo3d.h"
#include "mpegvideodata.h"
#include "thread.h"
#include "version.h"
+#include "vdpau_compat.h"
#include "xvmc_internal.h"
typedef struct Mpeg1Context {
uint8_t afd;
int has_afd;
int slice_count;
- int save_aspect_info;
+ AVRational save_aspect;
int save_width, save_height, save_progressive_seq;
AVRational frame_rate_ext; /* MPEG-2 specific framerate modificator */
int sync; /* Did we reach a sync point like a GOP/SEQ/KEYFrame? */
- int closed_gop; /* GOP is closed */
+ int tmpgexs;
int first_slice;
int extradata_decoded;
} Mpeg1Context;
dc += diff;
s->last_dc[component] = dc;
block[0] = dc * quant_matrix[0];
- ff_dlog(s->avctx, "dc=%d diff=%d\n", dc, diff);
+ ff_tlog(s->avctx, "dc=%d diff=%d\n", dc, diff);
i = 0;
{
OPEN_READER(re, &s->gb);
+ UPDATE_CACHE(re, &s->gb);
+ if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
+ goto end;
+
/* now quantify & encode AC coefficients */
for (;;) {
- UPDATE_CACHE(re, &s->gb);
GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0],
TEX_VLC_BITS, 2, 0);
- if (level == 127) {
- break;
- } else if (level != 0) {
+ if (level != 0) {
i += run;
check_scantable_index(s, i);
j = scantable[i];
level = (level - 1) | 1;
level = (level ^ SHOW_SBITS(re, &s->gb, 1)) -
SHOW_SBITS(re, &s->gb, 1);
- LAST_SKIP_BITS(re, &s->gb, 1);
+ SKIP_BITS(re, &s->gb, 1);
} else {
/* escape */
run = SHOW_UBITS(re, &s->gb, 6) + 1;
SKIP_BITS(re, &s->gb, 8);
if (level == -128) {
level = SHOW_UBITS(re, &s->gb, 8) - 256;
- LAST_SKIP_BITS(re, &s->gb, 8);
+ SKIP_BITS(re, &s->gb, 8);
} else if (level == 0) {
level = SHOW_UBITS(re, &s->gb, 8);
- LAST_SKIP_BITS(re, &s->gb, 8);
+ SKIP_BITS(re, &s->gb, 8);
}
i += run;
check_scantable_index(s, i);
}
block[j] = level;
+ if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF)
+ break;
+
+ UPDATE_CACHE(re, &s->gb);
}
+end:
+ LAST_SKIP_BITS(re, &s->gb, 2);
CLOSE_READER(re, &s->gb);
}
s->block_last_index[n] = i;
return 0;
}
+/**
+ * Note: this function can read out of range and crash for corrupt streams.
+ * Changing this would eat up any speed benefits it has.
+ * Do not use "fast" flag if you need the code to be robust.
+ */
static inline int mpeg1_fast_decode_block_inter(MpegEncContext *s,
int16_t *block, int n)
{
return 0;
}
+/**
+ * Note: this function can read out of range and crash for corrupt streams.
+ * Changing this would eat up any speed benefits it has.
+ * Do not use "fast" flag if you need the code to be robust.
+ */
static inline int mpeg2_fast_decode_block_non_intra(MpegEncContext *s,
int16_t *block, int n)
{
if (level != 0) {
i += run;
- check_scantable_index(s, i);
j = scantable[i];
level = ((level * 2 + 1) * qscale) >> 1;
level = (level ^ SHOW_SBITS(re, &s->gb, 1)) -
SKIP_BITS(re, &s->gb, 12);
i += run;
- check_scantable_index(s, i);
j = scantable[i];
if (level < 0) {
level = ((-level * 2 + 1) * qscale) >> 1;
}
block[j] = level;
- if (((int32_t) GET_CACHE(re, &s->gb)) <= (int32_t) 0xBFFFFFFF)
+ if (((int32_t) GET_CACHE(re, &s->gb)) <= (int32_t) 0xBFFFFFFF || i > 63)
break;
+
UPDATE_CACHE(re, &s->gb);
}
end:
dc += diff;
s->last_dc[component] = dc;
block[0] = dc << (3 - s->intra_dc_precision);
- ff_dlog(s->avctx, "dc=%d\n", block[0]);
+ ff_tlog(s->avctx, "dc=%d\n", block[0]);
mismatch = block[0] ^ 1;
i = 0;
if (s->intra_vlc_format)
return 0;
}
+/**
+ * Note: this function can read out of range and crash for corrupt streams.
+ * Changing this would eat up any speed benefits it has.
+ * Do not use "fast" flag if you need the code to be robust.
+ */
static inline int mpeg2_fast_decode_block_intra(MpegEncContext *s,
int16_t *block, int n)
{
GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0],
TEX_VLC_BITS, 2, 0);
- if (level == 127) {
+ if (level >= 64 || i > 63) {
break;
} else if (level != 0) {
i += run;
- check_scantable_index(s, i);
j = scantable[i];
level = (level * qscale * quant_matrix[j]) >> 4;
level = (level ^ SHOW_SBITS(re, &s->gb, 1)) -
level = SHOW_SBITS(re, &s->gb, 12);
SKIP_BITS(re, &s->gb, 12);
i += run;
- check_scantable_index(s, i);
j = scantable[i];
if (level < 0) {
level = (-level * qscale * quant_matrix[j]) >> 4;
return qscale << 1;
}
+
/* motion type (for MPEG-2) */
#define MT_FIELD 1
#define MT_FRAME 2
const int mb_block_count = 4 + (1 << s->chroma_format);
int ret;
- ff_dlog(s->avctx, "decode_mb: x=%d y=%d\n", s->mb_x, s->mb_y);
+ ff_tlog(s->avctx, "decode_mb: x=%d y=%d\n", s->mb_x, s->mb_y);
- assert(s->mb_skipped == 0);
+ av_assert2(s->mb_skipped == 0);
if (s->mb_skip_run-- != 0) {
if (s->pict_type == AV_PICTURE_TYPE_P) {
else
// FIXME not sure if this is allowed in MPEG at all
mb_type = s->current_picture.mb_type[s->mb_width + (s->mb_y - 1) * s->mb_stride - 1];
- if (IS_INTRA(mb_type))
+ if (IS_INTRA(mb_type)) {
+ av_log(s->avctx, AV_LOG_ERROR, "skip with previntra\n");
return AVERROR_INVALIDDATA;
+ }
s->current_picture.mb_type[s->mb_x + s->mb_y * s->mb_stride] =
mb_type | MB_TYPE_SKIP;
-// assert(s->current_picture.mb_type[s->mb_x + s->mb_y * s->mb_stride - 1] & (MB_TYPE_16x16 | MB_TYPE_16x8));
if ((s->mv[0][0][0] | s->mv[0][0][1] | s->mv[1][0][0] | s->mv[1][0][1]) == 0)
s->mb_skipped = 1;
mb_type = btype2mb_type[mb_type];
break;
}
- ff_dlog(s->avctx, "mb_type=%x\n", mb_type);
+ ff_tlog(s->avctx, "mb_type=%x\n", mb_type);
// motion_type = 0; /* avoid warning */
if (IS_INTRA(mb_type)) {
s->bdsp.clear_blocks(s->block[0]);
s->last_mv[0][1][1] = mpeg_decode_motion(s, s->mpeg_f_code[0][1],
s->last_mv[0][0][1]);
- skip_bits1(&s->gb); /* marker */
+ check_marker(&s->gb, "after concealment_motion_vectors");
} else {
/* reset mv prediction */
memset(s->last_mv, 0, sizeof(s->last_mv));
}
s->mb_intra = 1;
-#if FF_API_XVMC
-FF_DISABLE_DEPRECATION_WARNINGS
// if 1, we memcpy blocks in xvmcvideo
- if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration > 1)
+ if ((CONFIG_MPEG1_XVMC_HWACCEL || CONFIG_MPEG2_XVMC_HWACCEL) && s->pack_pblocks)
ff_xvmc_pack_pblocks(s, -1); // inter are always full blocks
-FF_ENABLE_DEPRECATION_WARNINGS
-#endif /* FF_API_XVMC */
if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
if (s->avctx->flags2 & AV_CODEC_FLAG2_FAST) {
}
} else {
if (mb_type & MB_TYPE_ZERO_MV) {
- assert(mb_type & MB_TYPE_CBP);
+ av_assert2(mb_type & MB_TYPE_CBP);
s->mv_dir = MV_DIR_FORWARD;
if (s->picture_structure == PICT_FRAME) {
- if (!s->frame_pred_frame_dct)
+ if (s->picture_structure == PICT_FRAME
+ && !s->frame_pred_frame_dct)
s->interlaced_dct = get_bits1(&s->gb);
s->mv_type = MV_TYPE_16X16;
} else {
s->mv[0][0][0] = 0;
s->mv[0][0][1] = 0;
} else {
- assert(mb_type & MB_TYPE_L0L1);
+ av_assert2(mb_type & MB_TYPE_L0L1);
// FIXME decide if MBs in field pictures are MB_TYPE_INTERLACED
/* get additional motion vector type */
- if (s->frame_pred_frame_dct) {
+ if (s->picture_structure == PICT_FRAME && s->frame_pred_frame_dct) {
motion_type = MT_FRAME;
} else {
motion_type = get_bits(&s->gb, 2);
/* motion vectors */
s->mv_dir = (mb_type >> 13) & 3;
- ff_dlog(s->avctx, "motion_type=%d\n", motion_type);
+ ff_tlog(s->avctx, "motion_type=%d\n", motion_type);
switch (motion_type) {
case MT_FRAME: /* or MT_16X8 */
if (s->picture_structure == PICT_FRAME) {
s->last_mv[i][j][0]);
s->last_mv[i][j][0] = val;
s->mv[i][j][0] = val;
- ff_dlog(s->avctx, "fmx=%d\n", val);
+ ff_tlog(s->avctx, "fmx=%d\n", val);
val = mpeg_decode_motion(s, s->mpeg_f_code[i][1],
s->last_mv[i][j][1] >> 1);
- s->last_mv[i][j][1] = val << 1;
+ s->last_mv[i][j][1] = 2 * val;
s->mv[i][j][1] = val;
- ff_dlog(s->avctx, "fmy=%d\n", val);
+ ff_tlog(s->avctx, "fmy=%d\n", val);
}
}
}
} else {
+ av_assert0(!s->progressive_sequence);
mb_type |= MB_TYPE_16x16 | MB_TYPE_INTERLACED;
for (i = 0; i < 2; i++) {
if (USES_LIST(mb_type, i)) {
}
break;
case MT_DMV:
+ if (s->progressive_sequence){
+ av_log(s->avctx, AV_LOG_ERROR, "MT_DMV in progressive_sequence\n");
+ return AVERROR_INVALIDDATA;
+ }
s->mv_type = MV_TYPE_DMV;
for (i = 0; i < 2; i++) {
if (USES_LIST(mb_type, i)) {
}
if (cbp <= 0) {
av_log(s->avctx, AV_LOG_ERROR,
- "invalid cbp at %d %d\n", s->mb_x, s->mb_y);
+ "invalid cbp %d at %d %d\n", cbp, s->mb_x, s->mb_y);
return AVERROR_INVALIDDATA;
}
-#if FF_API_XVMC
-FF_DISABLE_DEPRECATION_WARNINGS
// if 1, we memcpy blocks in xvmcvideo
- if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration > 1)
+ if ((CONFIG_MPEG1_XVMC_HWACCEL || CONFIG_MPEG2_XVMC_HWACCEL) && s->pack_pblocks)
ff_xvmc_pack_pblocks(s, cbp);
-FF_ENABLE_DEPRECATION_WARNINGS
-#endif /* FF_API_XVMC */
if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
if (s->avctx->flags2 & AV_CODEC_FLAG2_FAST) {
ff_mpv_decode_defaults(s2);
+ if ( avctx->codec_tag != AV_RL32("VCR2")
+ && avctx->codec_tag != AV_RL32("BW10"))
+ avctx->coded_width = avctx->coded_height = 0; // do not trust dimensions from input
+ ff_mpv_decode_init(s2, avctx);
+
s->mpeg_enc_ctx.avctx = avctx;
/* we need some permutation to store matrices,
s->repeat_field = 0;
s->mpeg_enc_ctx.codec_id = avctx->codec->id;
avctx->color_range = AVCOL_RANGE_MPEG;
- if (avctx->codec->id == AV_CODEC_ID_MPEG1VIDEO)
- avctx->chroma_sample_location = AVCHROMA_LOC_CENTER;
- else
- avctx->chroma_sample_location = AVCHROMA_LOC_LEFT;
return 0;
}
if (err)
return err;
- if (!ctx->mpeg_enc_ctx_allocated) {
- // copy the whole context after the initial MpegEncContext structure
- memcpy(ctx, ctx_from, sizeof(*ctx));
- memset(&ctx->mpeg_enc_ctx, 0, sizeof(ctx->mpeg_enc_ctx));
- }
+ if (!ctx->mpeg_enc_ctx_allocated)
+ memcpy(s + 1, s1 + 1, sizeof(Mpeg1Context) - sizeof(MpegEncContext));
if (!(s->pict_type == AV_PICTURE_TYPE_B || s->low_delay))
s->picture_number++;
matrix[new_perm[i]] = temp_matrix[old_perm[i]];
}
-#if FF_API_XVMC
-static const enum AVPixelFormat pixfmt_xvmc_mpg2_420[] = {
- AV_PIX_FMT_XVMC_MPEG2_IDCT,
- AV_PIX_FMT_XVMC_MPEG2_MC,
+static const enum AVPixelFormat mpeg1_hwaccel_pixfmt_list_420[] = {
+#if CONFIG_MPEG1_XVMC_HWACCEL
+ AV_PIX_FMT_XVMC,
+#endif
+#if CONFIG_MPEG1_VDPAU_HWACCEL
+ AV_PIX_FMT_VDPAU_MPEG1,
+ AV_PIX_FMT_VDPAU,
+#endif
+ AV_PIX_FMT_YUV420P,
AV_PIX_FMT_NONE
};
-#endif /* FF_API_XVMC */
-static const enum AVPixelFormat mpeg12_hwaccel_pixfmt_list_420[] = {
+static const enum AVPixelFormat mpeg2_hwaccel_pixfmt_list_420[] = {
+#if CONFIG_MPEG2_XVMC_HWACCEL
+ AV_PIX_FMT_XVMC,
+#endif
+#if CONFIG_MPEG2_VDPAU_HWACCEL
+ AV_PIX_FMT_VDPAU_MPEG2,
+ AV_PIX_FMT_VDPAU,
+#endif
#if CONFIG_MPEG2_DXVA2_HWACCEL
AV_PIX_FMT_DXVA2_VLD,
#endif
#endif
#if CONFIG_MPEG2_VAAPI_HWACCEL
AV_PIX_FMT_VAAPI_VLD,
-#endif
-#if CONFIG_MPEG1_VDPAU_HWACCEL | CONFIG_MPEG2_VDPAU_HWACCEL
- AV_PIX_FMT_VDPAU,
#endif
AV_PIX_FMT_YUV420P,
AV_PIX_FMT_NONE
AV_PIX_FMT_NONE
};
+static inline int uses_vdpau(AVCodecContext *avctx) {
+ return avctx->pix_fmt == AV_PIX_FMT_VDPAU_MPEG1 || avctx->pix_fmt == AV_PIX_FMT_VDPAU_MPEG2;
+}
+
static enum AVPixelFormat mpeg_get_pixelformat(AVCodecContext *avctx)
{
Mpeg1Context *s1 = avctx->priv_data;
MpegEncContext *s = &s1->mpeg_enc_ctx;
const enum AVPixelFormat *pix_fmts;
-#if FF_API_XVMC
-FF_DISABLE_DEPRECATION_WARNINGS
- if (avctx->xvmc_acceleration)
- return ff_get_format(avctx, pixfmt_xvmc_mpg2_420);
-FF_ENABLE_DEPRECATION_WARNINGS
-#endif /* FF_API_XVMC */
+ if (CONFIG_GRAY && (avctx->flags & AV_CODEC_FLAG_GRAY))
+ return AV_PIX_FMT_GRAY8;
if (s->chroma_format < 2)
- pix_fmts = mpeg12_hwaccel_pixfmt_list_420;
+ pix_fmts = avctx->codec_id == AV_CODEC_ID_MPEG1VIDEO ?
+ mpeg1_hwaccel_pixfmt_list_420 :
+ mpeg2_hwaccel_pixfmt_list_420;
else if (s->chroma_format == 2)
pix_fmts = mpeg12_pixfmt_list_422;
else
pix_fmts = mpeg12_pixfmt_list_444;
- return ff_get_format(avctx, pix_fmts);
+ return ff_thread_get_format(avctx, pix_fmts);
+}
+
+static void setup_hwaccel_for_pixfmt(AVCodecContext *avctx)
+{
+ // until then pix_fmt may be changed right after codec init
+ if (avctx->hwaccel || uses_vdpau(avctx))
+ if (avctx->idct_algo == FF_IDCT_AUTO)
+ avctx->idct_algo = FF_IDCT_SIMPLE;
+
+ if (avctx->hwaccel && avctx->pix_fmt == AV_PIX_FMT_XVMC) {
+ Mpeg1Context *s1 = avctx->priv_data;
+ MpegEncContext *s = &s1->mpeg_enc_ctx;
+
+ s->pack_pblocks = 1;
+#if FF_API_XVMC
+ avctx->xvmc_acceleration = 2;
+#endif /* FF_API_XVMC */
+ }
}
/* Call this function when we know all parameters.
uint8_t old_permutation[64];
int ret;
+ if (avctx->codec_id == AV_CODEC_ID_MPEG1VIDEO) {
+ // MPEG-1 aspect
+ avctx->sample_aspect_ratio = av_d2q(1.0 / ff_mpeg1_aspect[s->aspect_ratio_info], 255);
+ } else { // MPEG-2
+ // MPEG-2 aspect
+ if (s->aspect_ratio_info > 1) {
+ AVRational dar =
+ av_mul_q(av_div_q(ff_mpeg2_aspect[s->aspect_ratio_info],
+ (AVRational) { s1->pan_scan.width,
+ s1->pan_scan.height }),
+ (AVRational) { s->width, s->height });
+
+ /* We ignore the spec here and guess a bit as reality does not
+ * match the spec, see for example res_change_ffmpeg_aspect.ts
+ * and sequence-display-aspect.mpg.
+ * issue1613, 621, 562 */
+ if ((s1->pan_scan.width == 0) || (s1->pan_scan.height == 0) ||
+ (av_cmp_q(dar, (AVRational) { 4, 3 }) &&
+ av_cmp_q(dar, (AVRational) { 16, 9 }))) {
+ s->avctx->sample_aspect_ratio =
+ av_div_q(ff_mpeg2_aspect[s->aspect_ratio_info],
+ (AVRational) { s->width, s->height });
+ } else {
+ s->avctx->sample_aspect_ratio =
+ av_div_q(ff_mpeg2_aspect[s->aspect_ratio_info],
+ (AVRational) { s1->pan_scan.width, s1->pan_scan.height });
+// issue1613 4/3 16/9 -> 16/9
+// res_change_ffmpeg_aspect.ts 4/3 225/44 ->4/3
+// widescreen-issue562.mpg 4/3 16/9 -> 16/9
+// s->avctx->sample_aspect_ratio = av_mul_q(s->avctx->sample_aspect_ratio, (AVRational) {s->width, s->height});
+ ff_dlog(avctx, "aspect A %d/%d\n",
+ ff_mpeg2_aspect[s->aspect_ratio_info].num,
+ ff_mpeg2_aspect[s->aspect_ratio_info].den);
+ ff_dlog(avctx, "aspect B %d/%d\n", s->avctx->sample_aspect_ratio.num,
+ s->avctx->sample_aspect_ratio.den);
+ }
+ } else {
+ s->avctx->sample_aspect_ratio =
+ ff_mpeg2_aspect[s->aspect_ratio_info];
+ }
+ } // MPEG-2
+
+ if (av_image_check_sar(s->width, s->height,
+ avctx->sample_aspect_ratio) < 0) {
+ av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
+ avctx->sample_aspect_ratio.num,
+ avctx->sample_aspect_ratio.den);
+ avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
+ }
+
if ((s1->mpeg_enc_ctx_allocated == 0) ||
avctx->coded_width != s->width ||
avctx->coded_height != s->height ||
s1->save_width != s->width ||
s1->save_height != s->height ||
- s1->save_aspect_info != s->aspect_ratio_info ||
- s1->save_progressive_seq != s->progressive_sequence ||
+ av_cmp_q(s1->save_aspect, s->avctx->sample_aspect_ratio) ||
+ (s1->save_progressive_seq != s->progressive_sequence && FFALIGN(s->height, 16) != FFALIGN(s->height, 32)) ||
0) {
if (s1->mpeg_enc_ctx_allocated) {
ParseContext pc = s->parse_context;
s->parse_context.buffer = 0;
ff_mpv_common_end(s);
s->parse_context = pc;
+ s1->mpeg_enc_ctx_allocated = 0;
}
ret = ff_set_dimensions(avctx, s->width, s->height);
if (ret < 0)
return ret;
- avctx->bit_rate = s->bit_rate;
- s1->save_aspect_info = s->aspect_ratio_info;
+ if (avctx->codec_id == AV_CODEC_ID_MPEG2VIDEO && s->bit_rate) {
+ avctx->rc_max_rate = s->bit_rate;
+ } else if (avctx->codec_id == AV_CODEC_ID_MPEG1VIDEO && s->bit_rate &&
+ (s->bit_rate != 0x3FFFF*400 || s->vbv_delay != 0xFFFF)) {
+ avctx->bit_rate = s->bit_rate;
+ }
+ s1->save_aspect = s->avctx->sample_aspect_ratio;
s1->save_width = s->width;
s1->save_height = s->height;
s1->save_progressive_seq = s->progressive_sequence;
if (avctx->codec_id == AV_CODEC_ID_MPEG1VIDEO) {
// MPEG-1 fps
avctx->framerate = ff_mpeg12_frame_rate_tab[s->frame_rate_index];
- // MPEG-1 aspect
- avctx->sample_aspect_ratio = av_d2q(1.0 / ff_mpeg1_aspect[s->aspect_ratio_info], 255);
avctx->ticks_per_frame = 1;
+
+ avctx->chroma_sample_location = AVCHROMA_LOC_CENTER;
} else { // MPEG-2
// MPEG-2 fps
av_reduce(&s->avctx->framerate.num,
&s->avctx->framerate.den,
- ff_mpeg12_frame_rate_tab[s->frame_rate_index].num * s1->frame_rate_ext.num * 2,
+ ff_mpeg12_frame_rate_tab[s->frame_rate_index].num * s1->frame_rate_ext.num,
ff_mpeg12_frame_rate_tab[s->frame_rate_index].den * s1->frame_rate_ext.den,
1 << 30);
avctx->ticks_per_frame = 2;
- // MPEG-2 aspect
- if (s->aspect_ratio_info > 1) {
- AVRational dar =
- av_mul_q(av_div_q(ff_mpeg2_aspect[s->aspect_ratio_info],
- (AVRational) { s1->pan_scan.width,
- s1->pan_scan.height }),
- (AVRational) { s->width, s->height });
- /* We ignore the spec here and guess a bit as reality does not
- * match the spec, see for example res_change_ffmpeg_aspect.ts
- * and sequence-display-aspect.mpg.
- * issue1613, 621, 562 */
- if ((s1->pan_scan.width == 0) || (s1->pan_scan.height == 0) ||
- (av_cmp_q(dar, (AVRational) { 4, 3 }) &&
- av_cmp_q(dar, (AVRational) { 16, 9 }))) {
- s->avctx->sample_aspect_ratio =
- av_div_q(ff_mpeg2_aspect[s->aspect_ratio_info],
- (AVRational) { s->width, s->height });
- } else {
- s->avctx->sample_aspect_ratio =
- av_div_q(ff_mpeg2_aspect[s->aspect_ratio_info],
- (AVRational) { s1->pan_scan.width, s1->pan_scan.height });
-// issue1613 4/3 16/9 -> 16/9
-// res_change_ffmpeg_aspect.ts 4/3 225/44 ->4/3
-// widescreen-issue562.mpg 4/3 16/9 -> 16/9
-// s->avctx->sample_aspect_ratio = av_mul_q(s->avctx->sample_aspect_ratio, (AVRational) {s->width, s->height});
- ff_dlog(avctx, "A %d/%d\n",
- ff_mpeg2_aspect[s->aspect_ratio_info].num,
- ff_mpeg2_aspect[s->aspect_ratio_info].den);
- ff_dlog(avctx, "B %d/%d\n", s->avctx->sample_aspect_ratio.num,
- s->avctx->sample_aspect_ratio.den);
- }
- } else {
- s->avctx->sample_aspect_ratio =
- ff_mpeg2_aspect[s->aspect_ratio_info];
+ switch (s->chroma_format) {
+ case 1: avctx->chroma_sample_location = AVCHROMA_LOC_LEFT; break;
+ case 2:
+ case 3: avctx->chroma_sample_location = AVCHROMA_LOC_TOPLEFT; break;
}
} // MPEG-2
- ff_set_sar(s->avctx, s->avctx->sample_aspect_ratio);
-
avctx->pix_fmt = mpeg_get_pixelformat(avctx);
- // until then pix_fmt may be changed right after codec init
-#if FF_API_XVMC
- if ((avctx->pix_fmt == AV_PIX_FMT_XVMC_MPEG2_IDCT ||
- avctx->hwaccel) && avctx->idct_algo == FF_IDCT_AUTO)
-#else
- if (avctx->hwaccel && avctx->idct_algo == FF_IDCT_AUTO)
-#endif /* FF_API_XVMC */
- avctx->idct_algo = FF_IDCT_SIMPLE;
+ setup_hwaccel_for_pixfmt(avctx);
/* Quantization matrices may need reordering
* if DCT permutation is changed. */
return AVERROR_INVALIDDATA;
vbv_delay = get_bits(&s->gb, 16);
+ s->vbv_delay = vbv_delay;
if (s->pict_type == AV_PICTURE_TYPE_P ||
s->pict_type == AV_PICTURE_TYPE_B) {
s->full_pel[0] = get_bits1(&s->gb);
f_code = get_bits(&s->gb, 3);
- if (f_code == 0 && (avctx->err_recognition & AV_EF_BITSTREAM))
+ if (f_code == 0 && (avctx->err_recognition & (AV_EF_BITSTREAM|AV_EF_COMPLIANT)))
return AVERROR_INVALIDDATA;
+ f_code += !f_code;
s->mpeg_f_code[0][0] = f_code;
s->mpeg_f_code[0][1] = f_code;
}
if (s->pict_type == AV_PICTURE_TYPE_B) {
s->full_pel[1] = get_bits1(&s->gb);
f_code = get_bits(&s->gb, 3);
- if (f_code == 0 && (avctx->err_recognition & AV_EF_BITSTREAM))
+ if (f_code == 0 && (avctx->err_recognition & (AV_EF_BITSTREAM|AV_EF_COMPLIANT)))
return AVERROR_INVALIDDATA;
+ f_code += !f_code;
s->mpeg_f_code[1][0] = f_code;
s->mpeg_f_code[1][1] = f_code;
}
s->height |= (vert_size_ext << 12);
bit_rate_ext = get_bits(&s->gb, 12); /* XXX: handle it */
s->bit_rate += (bit_rate_ext << 18) * 400;
- skip_bits1(&s->gb); /* marker */
+ check_marker(&s->gb, "after bit rate extension");
s->avctx->rc_buffer_size += get_bits(&s->gb, 8) * 1024 * 16 << 10;
s->low_delay = get_bits1(&s->gb);
if (s->avctx->debug & FF_DEBUG_PICT_INFO)
av_log(s->avctx, AV_LOG_DEBUG,
- "profile: %d, level: %d vbv buffer: %d, bitrate:%d\n",
- s->avctx->profile, s->avctx->level,
+ "profile: %d, level: %d ps: %d cf:%d vbv buffer: %d, bitrate:%d\n",
+ s->avctx->profile, s->avctx->level, s->progressive_sequence, s->chroma_format,
s->avctx->rc_buffer_size, s->bit_rate);
}
return AVERROR_INVALIDDATA;
}
if (intra && i == 0 && v != 8) {
- av_log(s->avctx, AV_LOG_ERROR, "intra matrix invalid, ignoring\n");
+ av_log(s->avctx, AV_LOG_DEBUG, "intra matrix specifies invalid DC quantizer %d, ignoring\n", v);
v = 8; // needed by pink.mpg / issue1046
}
matrix0[j] = v;
s->current_picture.f->pict_type = s->pict_type;
s->current_picture.f->key_frame = s->pict_type == AV_PICTURE_TYPE_I;
}
+ s->mpeg_f_code[0][0] += !s->mpeg_f_code[0][0];
+ s->mpeg_f_code[0][1] += !s->mpeg_f_code[0][1];
+ s->mpeg_f_code[1][0] += !s->mpeg_f_code[1][0];
+ s->mpeg_f_code[1][1] += !s->mpeg_f_code[1][1];
+
s->intra_dc_precision = get_bits(&s->gb, 2);
s->picture_structure = get_bits(&s->gb, 2);
s->top_field_first = get_bits1(&s->gb);
s->chroma_420_type = get_bits1(&s->gb);
s->progressive_frame = get_bits1(&s->gb);
- if (s->progressive_sequence && !s->progressive_frame) {
- s->progressive_frame = 1;
- av_log(s->avctx, AV_LOG_ERROR,
- "interlaced frame in progressive sequence, ignoring\n");
- }
-
- if (s->picture_structure == 0 ||
- (s->progressive_frame && s->picture_structure != PICT_FRAME)) {
- av_log(s->avctx, AV_LOG_ERROR,
- "picture_structure %d invalid, ignoring\n",
- s->picture_structure);
- s->picture_structure = PICT_FRAME;
- }
-
- if (s->progressive_sequence && !s->frame_pred_frame_dct)
- av_log(s->avctx, AV_LOG_WARNING, "invalid frame_pred_frame_dct\n");
-
- if (s->picture_structure == PICT_FRAME) {
- s->first_field = 0;
- s->v_edge_pos = 16 * s->mb_height;
- } else {
- s->first_field ^= 1;
- s->v_edge_pos = 8 * s->mb_height;
- memset(s->mbskip_table, 0, s->mb_stride * s->mb_height);
- }
-
if (s->alternate_scan) {
ff_init_scantable(s->idsp.idct_permutation, &s->inter_scantable, ff_alternate_vertical_scan);
ff_init_scantable(s->idsp.idct_permutation, &s->intra_scantable, ff_alternate_vertical_scan);
if (sd)
memcpy(sd->data, s1->a53_caption, s1->a53_caption_size);
av_freep(&s1->a53_caption);
+ avctx->properties |= FF_CODEC_PROPERTY_CLOSED_CAPTIONS;
}
if (s1->has_stereo3d) {
return ret;
}
-#if FF_API_XVMC
-FF_DISABLE_DEPRECATION_WARNINGS
-// ff_mpv_frame_start will call this function too,
-// but we need to call it on every field
- if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration)
- if (ff_xvmc_field_start(s, avctx) < 0)
- return -1;
-FF_ENABLE_DEPRECATION_WARNINGS
-#endif /* FF_API_XVMC */
-
return 0;
}
const uint8_t **buf, int buf_size)
{
AVCodecContext *avctx = s->avctx;
+ const int lowres = s->avctx->lowres;
const int field_pic = s->picture_structure != PICT_FRAME;
int ret;
s->resync_mb_x =
s->resync_mb_y = -1;
- assert(mb_y < s->mb_height);
+ av_assert0(mb_y < s->mb_height);
init_get_bits(&s->gb, *buf, buf_size * 8);
+ if (s->codec_id != AV_CODEC_ID_MPEG1VIDEO && s->mb_height > 2800/16)
+ skip_bits(&s->gb, 3);
ff_mpeg1_clean_buffers(s);
s->interlaced_dct = 0;
}
/* extra slice info */
- while (get_bits1(&s->gb) != 0)
- skip_bits(&s->gb, 8);
+ if (skip_1stop_8data_bits(&s->gb) < 0)
+ return AVERROR_INVALIDDATA;
s->mb_x = 0;
return AVERROR_INVALIDDATA;
}
- if (avctx->hwaccel) {
+ if (avctx->hwaccel && avctx->hwaccel->decode_slice) {
const uint8_t *buf_end, *buf_start = *buf - 4; /* include start_code */
int start_code = -1;
buf_end = avpriv_find_start_code(buf_start + 2, *buf + buf_size, &start_code);
}
for (;;) {
-#if FF_API_XVMC
-FF_DISABLE_DEPRECATION_WARNINGS
// If 1, we memcpy blocks in xvmcvideo.
- if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration > 1)
+ if ((CONFIG_MPEG1_XVMC_HWACCEL || CONFIG_MPEG2_XVMC_HWACCEL) && s->pack_pblocks)
ff_xvmc_init_block(s); // set s->block
-FF_ENABLE_DEPRECATION_WARNINGS
-#endif /* FF_API_XVMC */
if ((ret = mpeg_decode_mb(s, s->block)) < 0)
return ret;
s->current_picture.motion_val[dir][xy + 1][1] = motion_y;
s->current_picture.ref_index [dir][b8_xy] =
s->current_picture.ref_index [dir][b8_xy + 1] = s->field_select[dir][i];
- assert(s->field_select[dir][i] == 0 ||
- s->field_select[dir][i] == 1);
+ av_assert2(s->field_select[dir][i] == 0 ||
+ s->field_select[dir][i] == 1);
}
xy += wrap;
b8_xy += 2;
}
}
- s->dest[0] += 16;
- s->dest[1] += 16 >> s->chroma_x_shift;
- s->dest[2] += 16 >> s->chroma_x_shift;
+ s->dest[0] += 16 >> lowres;
+ s->dest[1] +=(16 >> lowres) >> s->chroma_x_shift;
+ s->dest[2] +=(16 >> lowres) >> s->chroma_x_shift;
ff_mpv_decode_mb(s, s->block);
if (++s->mb_x >= s->mb_width) {
- const int mb_size = 16;
+ const int mb_size = 16 >> s->avctx->lowres;
ff_mpeg_draw_horiz_band(s, mb_size * (s->mb_y >> field_pic), mb_size);
ff_mpv_report_decode_progress(s);
s->progressive_frame == 0
/* vbv_delay == 0xBBB || 0xE10 */;
+ if (left >= 32 && !is_d10) {
+ GetBitContext gb = s->gb;
+ align_get_bits(&gb);
+ if (show_bits(&gb, 24) == 0x060E2B) {
+ av_log(avctx, AV_LOG_DEBUG, "Invalid MXF data found in video stream\n");
+ is_d10 = 1;
+ }
+ }
+
if (left < 0 ||
(left && show_bits(&s->gb, FFMIN(left, 23)) && !is_d10) ||
- ((avctx->err_recognition & AV_EF_BUFFER) && left > 8)) {
+ ((avctx->err_recognition & (AV_EF_BITSTREAM | AV_EF_AGGRESSIVE)) && left > 8)) {
av_log(avctx, AV_LOG_ERROR, "end mismatch left=%d %0X\n",
left, show_bits(&s->gb, FFMIN(left, 23)));
return AVERROR_INVALIDDATA;
} else
goto eos;
}
+ // There are some files out there which are missing the last slice
+ // in cases where the slice is completely outside the visible
+ // area, we detect this here instead of running into the end expecting
+ // more data
+ if (s->mb_y >= ((s->height + 15) >> 4) &&
+ !s->progressive_sequence &&
+ get_bits_left(&s->gb) <= 8 &&
+ get_bits_left(&s->gb) >= 0 &&
+ s->mb_skip_run == -1 &&
+ show_bits(&s->gb, 8) == 0)
+ goto eos;
ff_init_block_index(s);
}
}
}
eos: // end of slice
+ if (get_bits_left(&s->gb) < 0) {
+ av_log(s, AV_LOG_ERROR, "overread %d\n", -get_bits_left(&s->gb));
+ return AVERROR_INVALIDDATA;
+ }
*buf += (get_bits_count(&s->gb) - 1) / 8;
- ff_dlog(s, "y %d %d %d %d\n", s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y);
+ ff_dlog(s, "Slice start:%d %d end:%d %d\n", s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y);
return 0;
}
start_code = -1;
buf = avpriv_find_start_code(buf, s->gb.buffer_end, &start_code);
- mb_y = (start_code - SLICE_MIN_START_CODE) << field_pic;
+ mb_y = start_code - SLICE_MIN_START_CODE;
+ if (s->codec_id != AV_CODEC_ID_MPEG1VIDEO && s->mb_height > 2800/16)
+ mb_y += (*buf&0xE0)<<2;
+ mb_y <<= field_pic;
if (s->picture_structure == PICT_BOTTOM_FIELD)
mb_y++;
if (mb_y < 0 || mb_y >= s->end_mb_y)
"hardware accelerator failed to decode picture\n");
}
-#if FF_API_XVMC
-FF_DISABLE_DEPRECATION_WARNINGS
- if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration)
- ff_xvmc_field_end(s);
-FF_ENABLE_DEPRECATION_WARNINGS
-#endif /* FF_API_XVMC */
-
/* end of slice reached */
- if (/* s->mb_y << field_pic == s->mb_height && */ !s->first_field) {
+ if (/* s->mb_y << field_pic == s->mb_height && */ !s->first_field && !s1->first_slice) {
/* end of image */
ff_er_frame_end(&s->er);
int ret = av_frame_ref(pict, s->current_picture_ptr->f);
if (ret < 0)
return ret;
- ff_print_debug_info(s, s->current_picture_ptr);
+ ff_print_debug_info(s, s->current_picture_ptr, pict);
+ ff_mpv_export_qp_table(s, pict, s->current_picture_ptr, FF_QSCALE_TYPE_MPEG2);
} else {
if (avctx->active_thread_type & FF_THREAD_FRAME)
s->picture_number++;
int ret = av_frame_ref(pict, s->last_picture_ptr->f);
if (ret < 0)
return ret;
- ff_print_debug_info(s, s->last_picture_ptr);
+ ff_print_debug_info(s, s->last_picture_ptr, pict);
+ ff_mpv_export_qp_table(s, pict, s->last_picture_ptr, FF_QSCALE_TYPE_MPEG2);
}
}
if (width == 0 || height == 0) {
av_log(avctx, AV_LOG_WARNING,
"Invalid horizontal or vertical size value.\n");
- if (avctx->err_recognition & AV_EF_BITSTREAM)
+ if (avctx->err_recognition & (AV_EF_BITSTREAM | AV_EF_COMPLIANT))
return AVERROR_INVALIDDATA;
}
s->aspect_ratio_info = get_bits(&s->gb, 4);
if (s->aspect_ratio_info == 0) {
av_log(avctx, AV_LOG_ERROR, "aspect ratio has forbidden 0 value\n");
- if (avctx->err_recognition & AV_EF_BITSTREAM)
+ if (avctx->err_recognition & (AV_EF_BITSTREAM | AV_EF_COMPLIANT))
return AVERROR_INVALIDDATA;
}
s->frame_rate_index = get_bits(&s->gb, 4);
if (s->frame_rate_index == 0 || s->frame_rate_index > 13) {
av_log(avctx, AV_LOG_WARNING,
"frame_rate_index %d is invalid\n", s->frame_rate_index);
- return AVERROR_INVALIDDATA;
+ s->frame_rate_index = 1;
}
s->bit_rate = get_bits(&s->gb, 18) * 400;
- if (get_bits1(&s->gb) == 0) { /* marker */
- av_log(avctx, AV_LOG_ERROR, "Marker in sequence header missing\n");
+ if (check_marker(&s->gb, "in sequence header") == 0) {
return AVERROR_INVALIDDATA;
}
s->width = width;
s->progressive_sequence = 1;
s->progressive_frame = 1;
s->picture_structure = PICT_FRAME;
+ s->first_field = 0;
s->frame_pred_frame_dct = 1;
s->chroma_format = 1;
s->codec_id =
s->avctx->codec_id = AV_CODEC_ID_MPEG1VIDEO;
s->out_format = FMT_MPEG1;
+ s->swap_uv = 0; // AFAIK VCR2 does not have SEQ_HEADER
if (s->avctx->flags & AV_CODEC_FLAG_LOW_DELAY)
s->low_delay = 1;
if (s->avctx->debug & FF_DEBUG_PICT_INFO)
- av_log(s->avctx, AV_LOG_DEBUG, "vbv buffer: %d, bitrate:%d\n",
- s->avctx->rc_buffer_size, s->bit_rate);
+ av_log(s->avctx, AV_LOG_DEBUG, "vbv buffer: %d, bitrate:%d, aspect_ratio_info: %d \n",
+ s->avctx->rc_buffer_size, s->bit_rate, s->aspect_ratio_info);
return 0;
}
s->out_format = FMT_MPEG1;
if (s1->mpeg_enc_ctx_allocated) {
ff_mpv_common_end(s);
+ s1->mpeg_enc_ctx_allocated = 0;
}
s->width = avctx->coded_width;
s->height = avctx->coded_height;
s->low_delay = 1;
avctx->pix_fmt = mpeg_get_pixelformat(avctx);
-
-#if FF_API_XVMC
- if ((avctx->pix_fmt == AV_PIX_FMT_XVMC_MPEG2_IDCT || avctx->hwaccel) &&
- avctx->idct_algo == FF_IDCT_AUTO)
-#else
- if (avctx->hwaccel && avctx->idct_algo == FF_IDCT_AUTO)
-#endif /* FF_API_XVMC */
- avctx->idct_algo = FF_IDCT_SIMPLE;
+ setup_hwaccel_for_pixfmt(avctx);
ff_mpv_idct_init(s);
if ((ret = ff_mpv_common_init(s)) < 0)
s->progressive_sequence = 1;
s->progressive_frame = 1;
s->picture_structure = PICT_FRAME;
+ s->first_field = 0;
s->frame_pred_frame_dct = 1;
s->chroma_format = 1;
- s->codec_id = s->avctx->codec_id = AV_CODEC_ID_MPEG2VIDEO;
+ if (s->codec_tag == AV_RL32("BW10")) {
+ s->codec_id = s->avctx->codec_id = AV_CODEC_ID_MPEG1VIDEO;
+ } else {
+ s->swap_uv = 1; // in case of xvmc we need to swap uv for each MB
+ s->codec_id = s->avctx->codec_id = AV_CODEC_ID_MPEG2VIDEO;
+ }
s1->save_width = s->width;
s1->save_height = s->height;
s1->save_progressive_seq = s->progressive_sequence;
static void mpeg_decode_user_data(AVCodecContext *avctx,
const uint8_t *p, int buf_size)
{
+ Mpeg1Context *s = avctx->priv_data;
const uint8_t *buf_end = p + buf_size;
Mpeg1Context *s1 = avctx->priv_data;
+#if 0
+ int i;
+ for(i=0; !(!p[i-2] && !p[i-1] && p[i]==1) && i<buf_size; i++){
+ av_log(avctx, AV_LOG_ERROR, "%c", p[i]);
+ }
+ av_log(avctx, AV_LOG_ERROR, "\n");
+#endif
+
+ if (buf_size > 29){
+ int i;
+ for(i=0; i<20; i++)
+ if (!memcmp(p+i, "\0TMPGEXS\0", 9)){
+ s->tmpgexs= 1;
+ }
+ }
/* we parse the DTG active format information */
if (buf_end - p >= 5 &&
p[0] == 'D' && p[1] == 'T' && p[2] == 'G' && p[3] == '1') {
{
Mpeg1Context *s1 = avctx->priv_data;
MpegEncContext *s = &s1->mpeg_enc_ctx;
-
- int time_code_hours, time_code_minutes;
- int time_code_seconds, time_code_pictures;
int broken_link;
+ int64_t tc;
init_get_bits(&s->gb, buf, buf_size * 8);
- skip_bits1(&s->gb); /* drop_frame_flag */
-
- time_code_hours = get_bits(&s->gb, 5);
- time_code_minutes = get_bits(&s->gb, 6);
- skip_bits1(&s->gb); // marker bit
- time_code_seconds = get_bits(&s->gb, 6);
- time_code_pictures = get_bits(&s->gb, 6);
+ tc = avctx->timecode_frame_start = get_bits(&s->gb, 25);
- s1->closed_gop = get_bits1(&s->gb);
+ s->closed_gop = get_bits1(&s->gb);
/* broken_link indicate that after editing the
* reference frames of the first B-Frames after GOP I-Frame
* are missing (open gop) */
broken_link = get_bits1(&s->gb);
- if (s->avctx->debug & FF_DEBUG_PICT_INFO)
+ if (s->avctx->debug & FF_DEBUG_PICT_INFO) {
+ char tcbuf[AV_TIMECODE_STR_SIZE];
+ av_timecode_make_mpeg_tc_string(tcbuf, tc);
av_log(s->avctx, AV_LOG_DEBUG,
- "GOP (%2d:%02d:%02d.[%02d]) closed_gop=%d broken_link=%d\n",
- time_code_hours, time_code_minutes, time_code_seconds,
- time_code_pictures, s1->closed_gop, broken_link);
+ "GOP (%s) closed_gop=%d broken_link=%d\n",
+ tcbuf, s->closed_gop, broken_link);
+ }
}
static int decode_chunks(AVCodecContext *avctx, AVFrame *picture,
const uint8_t *buf_end = buf + buf_size;
int ret, input_size;
int last_code = 0, skip_frame = 0;
+ int picture_start_code_seen = 0;
for (;;) {
/* find next start code */
(avctx->active_thread_type & FF_THREAD_SLICE) &&
!avctx->hwaccel) {
int i;
+ av_assert0(avctx->thread_count > 1);
avctx->execute(avctx, slice_decode_thread,
&s2->thread_context[0], NULL,
s2->er.error_count += s2->thread_context[i]->er.error_count;
}
+ if ((CONFIG_MPEG_VDPAU_DECODER || CONFIG_MPEG1_VDPAU_DECODER)
+ && uses_vdpau(avctx))
+ ff_vdpau_mpeg_picture_complete(s2, buf, buf_size, s->slice_count);
+
ret = slice_end(avctx, picture);
if (ret < 0)
return ret;
}
}
s2->pict_type = 0;
+
+ if (avctx->err_recognition & AV_EF_EXPLODE && s2->er.error_count)
+ return AVERROR_INVALIDDATA;
+
return FFMAX(0, buf_ptr - buf - s2->parse_context.last_index);
}
input_size = buf_end - buf_ptr;
if (avctx->debug & FF_DEBUG_STARTCODE)
- av_log(avctx, AV_LOG_DEBUG, "%3"PRIX32" at %td left %d\n",
+ av_log(avctx, AV_LOG_DEBUG, "%3"PRIX32" at %"PTRDIFF_SPECIFIER" left %d\n",
start_code, buf_ptr - buf, input_size);
/* prepare data for next start code */
case SEQ_START_CODE:
if (last_code == 0) {
mpeg1_decode_sequence(avctx, buf_ptr, input_size);
- s->sync = 1;
+ if (buf != avctx->extradata)
+ s->sync = 1;
} else {
av_log(avctx, AV_LOG_ERROR,
"ignoring SEQ_START_CODE after %X\n", last_code);
break;
case PICTURE_START_CODE:
+ if (picture_start_code_seen && s2->picture_structure == PICT_FRAME) {
+ /* If it's a frame picture, there can't be more than one picture header.
+ Yet, it does happen and we need to handle it. */
+ av_log(avctx, AV_LOG_WARNING, "ignoring extra picture following a frame-picture\n");
+ break;
+ }
+ picture_start_code_seen = 1;
+
if (s2->width <= 0 || s2->height <= 0) {
av_log(avctx, AV_LOG_ERROR, "Invalid frame dimensions %dx%d.\n",
s2->width, s2->height);
return AVERROR_INVALIDDATA;
}
+ if (s->tmpgexs){
+ s2->intra_dc_precision= 3;
+ s2->intra_matrix[0]= 1;
+ }
if (HAVE_THREADS && (avctx->active_thread_type & FF_THREAD_SLICE) &&
!avctx->hwaccel && s->slice_count) {
int i;
}
break;
default:
+ if (start_code >= SLICE_MIN_START_CODE &&
+ start_code <= SLICE_MAX_START_CODE && last_code == PICTURE_START_CODE) {
+ if (s2->progressive_sequence && !s2->progressive_frame) {
+ s2->progressive_frame = 1;
+ av_log(s2->avctx, AV_LOG_ERROR,
+ "interlaced frame in progressive sequence, ignoring\n");
+ }
+
+ if (s2->picture_structure == 0 ||
+ (s2->progressive_frame && s2->picture_structure != PICT_FRAME)) {
+ av_log(s2->avctx, AV_LOG_ERROR,
+ "picture_structure %d invalid, ignoring\n",
+ s2->picture_structure);
+ s2->picture_structure = PICT_FRAME;
+ }
+
+ if (s2->progressive_sequence && !s2->frame_pred_frame_dct)
+ av_log(s2->avctx, AV_LOG_WARNING, "invalid frame_pred_frame_dct\n");
+
+ if (s2->picture_structure == PICT_FRAME) {
+ s2->first_field = 0;
+ s2->v_edge_pos = 16 * s2->mb_height;
+ } else {
+ s2->first_field ^= 1;
+ s2->v_edge_pos = 8 * s2->mb_height;
+ memset(s2->mbskip_table, 0, s2->mb_stride * s2->mb_height);
+ }
+ }
if (start_code >= SLICE_MIN_START_CODE &&
start_code <= SLICE_MAX_START_CODE && last_code != 0) {
const int field_pic = s2->picture_structure != PICT_FRAME;
- int mb_y = (start_code - SLICE_MIN_START_CODE) << field_pic;
+ int mb_y = start_code - SLICE_MIN_START_CODE;
last_code = SLICE_MIN_START_CODE;
+ if (s2->codec_id != AV_CODEC_ID_MPEG1VIDEO && s2->mb_height > 2800/16)
+ mb_y += (*buf_ptr&0xE0)<<2;
+ mb_y <<= field_pic;
if (s2->picture_structure == PICT_BOTTOM_FIELD)
mb_y++;
+ if (buf_end - buf_ptr < 2) {
+ av_log(s2->avctx, AV_LOG_ERROR, "slice too small\n");
+ return AVERROR_INVALIDDATA;
+ }
+
if (mb_y >= s2->mb_height) {
av_log(s2->avctx, AV_LOG_ERROR,
"slice below image (%d >= %d)\n", mb_y, s2->mb_height);
/* Skip B-frames if we do not have reference frames and
* GOP is not closed. */
if (s2->pict_type == AV_PICTURE_TYPE_B) {
- if (!s->closed_gop) {
+ if (!s2->closed_gop) {
skip_frame = 1;
break;
}
}
}
- if (s2->pict_type == AV_PICTURE_TYPE_I)
+ if (s2->pict_type == AV_PICTURE_TYPE_I || (s2->avctx->flags2 & AV_CODEC_FLAG2_SHOW_ALL))
s->sync = 1;
if (!s2->next_picture_ptr) {
/* Skip P-frames if we do not have a reference frame or
return AVERROR_INVALIDDATA;
}
+ if (uses_vdpau(avctx)) {
+ s->slice_count++;
+ break;
+ }
+
if (HAVE_THREADS &&
(avctx->active_thread_type & FF_THREAD_SLICE) &&
!avctx->hwaccel) {
int threshold = (s2->mb_height * s->slice_count +
s2->slice_context_count / 2) /
s2->slice_context_count;
+ av_assert0(avctx->thread_count > 1);
if (threshold <= mb_y) {
MpegEncContext *thread_context = s2->thread_context[s->slice_count];
int *got_output, AVPacket *avpkt)
{
const uint8_t *buf = avpkt->data;
+ int ret;
int buf_size = avpkt->size;
Mpeg1Context *s = avctx->priv_data;
AVFrame *picture = data;
MpegEncContext *s2 = &s->mpeg_enc_ctx;
- ff_dlog(avctx, "fill_buffer\n");
if (buf_size == 0 || (buf_size == 4 && AV_RB32(buf) == SEQ_END_CODE)) {
/* special case for last picture */
return buf_size;
}
- if (s->mpeg_enc_ctx_allocated == 0 && avctx->codec_tag == AV_RL32("VCR2"))
+ s2->codec_tag = avpriv_toupper4(avctx->codec_tag);
+ if (s->mpeg_enc_ctx_allocated == 0 && ( s2->codec_tag == AV_RL32("VCR2")
+ || s2->codec_tag == AV_RL32("BW10")
+ ))
vcr2_init_sequence(avctx);
s->slice_count = 0;
if (avctx->extradata && !s->extradata_decoded) {
- int ret = decode_chunks(avctx, picture, got_output,
- avctx->extradata, avctx->extradata_size);
+ ret = decode_chunks(avctx, picture, got_output,
+ avctx->extradata, avctx->extradata_size);
+ if (*got_output) {
+ av_log(avctx, AV_LOG_ERROR, "picture in extradata\n");
+ *got_output = 0;
+ }
s->extradata_decoded = 1;
- if (ret < 0 && (avctx->err_recognition & AV_EF_EXPLODE))
+ if (ret < 0 && (avctx->err_recognition & AV_EF_EXPLODE)) {
+ s2->current_picture_ptr = NULL;
return ret;
+ }
}
- return decode_chunks(avctx, picture, got_output, buf, buf_size);
+ ret = decode_chunks(avctx, picture, got_output, buf, buf_size);
+ if (ret<0 || *got_output)
+ s2->current_picture_ptr = NULL;
+
+ return ret;
}
static void flush(AVCodecContext *avctx)
Mpeg1Context *s = avctx->priv_data;
s->sync = 0;
- s->closed_gop = 0;
ff_mpeg_flush(avctx);
}
CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY |
CODEC_CAP_SLICE_THREADS,
.flush = flush,
+ .max_lowres = 3,
.update_thread_context = ONLY_IF_THREADS_ENABLED(mpeg_decode_update_thread_context)
};
CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY |
CODEC_CAP_SLICE_THREADS,
.flush = flush,
+ .max_lowres = 3,
.profiles = NULL_IF_CONFIG_SMALL(mpeg2_video_profiles),
};
+//legacy decoder
+AVCodec ff_mpegvideo_decoder = {
+ .name = "mpegvideo",
+ .long_name = NULL_IF_CONFIG_SMALL("MPEG-1 video"),
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = AV_CODEC_ID_MPEG2VIDEO,
+ .priv_data_size = sizeof(Mpeg1Context),
+ .init = mpeg_decode_init,
+ .close = mpeg_decode_end,
+ .decode = mpeg_decode_frame,
+ .capabilities = CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY | CODEC_CAP_SLICE_THREADS,
+ .flush = flush,
+ .max_lowres = 3,
+};
+
#if FF_API_XVMC
#if CONFIG_MPEG_XVMC_DECODER
static av_cold int mpeg_mc_decode_init(AVCodecContext *avctx)
#endif
#endif /* FF_API_XVMC */
+
+#if CONFIG_MPEG_VDPAU_DECODER
+AVCodec ff_mpeg_vdpau_decoder = {
+ .name = "mpegvideo_vdpau",
+ .long_name = NULL_IF_CONFIG_SMALL("MPEG-1/2 video (VDPAU acceleration)"),
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = AV_CODEC_ID_MPEG2VIDEO,
+ .priv_data_size = sizeof(Mpeg1Context),
+ .init = mpeg_decode_init,
+ .close = mpeg_decode_end,
+ .decode = mpeg_decode_frame,
+ .capabilities = CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED |
+ CODEC_CAP_HWACCEL_VDPAU | CODEC_CAP_DELAY,
+ .flush = flush,
+};
+#endif
+
+#if CONFIG_MPEG1_VDPAU_DECODER
+AVCodec ff_mpeg1_vdpau_decoder = {
+ .name = "mpeg1video_vdpau",
+ .long_name = NULL_IF_CONFIG_SMALL("MPEG-1 video (VDPAU acceleration)"),
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = AV_CODEC_ID_MPEG1VIDEO,
+ .priv_data_size = sizeof(Mpeg1Context),
+ .init = mpeg_decode_init,
+ .close = mpeg_decode_end,
+ .decode = mpeg_decode_frame,
+ .capabilities = CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED |
+ CODEC_CAP_HWACCEL_VDPAU | CODEC_CAP_DELAY,
+ .flush = flush,
+};
+#endif
projects / ffmpeg / blobdiff