This source file includes following definitions.
- get_fp_val
- vc1_sprite_parse_transform
- vc1_parse_sprites
- vc1_draw_sprites
- vc1_decode_sprites
- vc1_sprite_flush
- ff_vc1_decode_init_alloc_tables
- ff_vc1_init_transposed_scantables
- vc1_decode_init
- ff_vc1_decode_end
- vc1_decode_frame
#include "avcodec.h"
#include "blockdsp.h"
#include "get_bits.h"
#include "internal.h"
#include "mpeg_er.h"
#include "mpegvideo.h"
#include "msmpeg4data.h"
#include "vc1.h"
#include "vc1data.h"
#include "vdpau_internal.h"
#include "libavutil/avassert.h"
#if CONFIG_WMV3IMAGE_DECODER || CONFIG_VC1IMAGE_DECODER
typedef struct SpriteData {
int coefs[2][7];
int effect_type, effect_flag;
int effect_pcount1, effect_pcount2;
int effect_params1[15], effect_params2[10];
} SpriteData;
static inline int get_fp_val(GetBitContext* gb)
{
return (get_bits_long(gb, 30) - (1 << 29)) << 1;
}
static void vc1_sprite_parse_transform(GetBitContext* gb, int c[7])
{
c[1] = c[3] = 0;
switch (get_bits(gb, 2)) {
case 0:
c[0] = 1 << 16;
c[2] = get_fp_val(gb);
c[4] = 1 << 16;
break;
case 1:
c[0] = c[4] = get_fp_val(gb);
c[2] = get_fp_val(gb);
break;
case 2:
c[0] = get_fp_val(gb);
c[2] = get_fp_val(gb);
c[4] = get_fp_val(gb);
break;
case 3:
c[0] = get_fp_val(gb);
c[1] = get_fp_val(gb);
c[2] = get_fp_val(gb);
c[3] = get_fp_val(gb);
c[4] = get_fp_val(gb);
break;
}
c[5] = get_fp_val(gb);
if (get_bits1(gb))
c[6] = get_fp_val(gb);
else
c[6] = 1 << 16;
}
static int vc1_parse_sprites(VC1Context *v, GetBitContext* gb, SpriteData* sd)
{
AVCodecContext *avctx = v->s.avctx;
int sprite, i;
for (sprite = 0; sprite <= v->two_sprites; sprite++) {
vc1_sprite_parse_transform(gb, sd->coefs[sprite]);
if (sd->coefs[sprite][1] || sd->coefs[sprite][3])
avpriv_request_sample(avctx, "Non-zero rotation coefficients");
av_log(avctx, AV_LOG_DEBUG, sprite ? "S2:" : "S1:");
for (i = 0; i < 7; i++)
av_log(avctx, AV_LOG_DEBUG, " %d.%.3d",
sd->coefs[sprite][i] / (1<<16),
(abs(sd->coefs[sprite][i]) & 0xFFFF) * 1000 / (1 << 16));
av_log(avctx, AV_LOG_DEBUG, "\n");
}
skip_bits(gb, 2);
if (sd->effect_type = get_bits_long(gb, 30)) {
switch (sd->effect_pcount1 = get_bits(gb, 4)) {
case 7:
vc1_sprite_parse_transform(gb, sd->effect_params1);
break;
case 14:
vc1_sprite_parse_transform(gb, sd->effect_params1);
vc1_sprite_parse_transform(gb, sd->effect_params1 + 7);
break;
default:
for (i = 0; i < sd->effect_pcount1; i++)
sd->effect_params1[i] = get_fp_val(gb);
}
if (sd->effect_type != 13 || sd->effect_params1[0] != sd->coefs[0][6]) {
av_log(avctx, AV_LOG_DEBUG, "Effect: %d; params: ", sd->effect_type);
for (i = 0; i < sd->effect_pcount1; i++)
av_log(avctx, AV_LOG_DEBUG, " %d.%.2d",
sd->effect_params1[i] / (1 << 16),
(abs(sd->effect_params1[i]) & 0xFFFF) * 1000 / (1 << 16));
av_log(avctx, AV_LOG_DEBUG, "\n");
}
sd->effect_pcount2 = get_bits(gb, 16);
if (sd->effect_pcount2 > 10) {
av_log(avctx, AV_LOG_ERROR, "Too many effect parameters\n");
return AVERROR_INVALIDDATA;
} else if (sd->effect_pcount2) {
i = -1;
av_log(avctx, AV_LOG_DEBUG, "Effect params 2: ");
while (++i < sd->effect_pcount2) {
sd->effect_params2[i] = get_fp_val(gb);
av_log(avctx, AV_LOG_DEBUG, " %d.%.2d",
sd->effect_params2[i] / (1 << 16),
(abs(sd->effect_params2[i]) & 0xFFFF) * 1000 / (1 << 16));
}
av_log(avctx, AV_LOG_DEBUG, "\n");
}
}
if (sd->effect_flag = get_bits1(gb))
av_log(avctx, AV_LOG_DEBUG, "Effect flag set\n");
if (get_bits_count(gb) >= gb->size_in_bits +
(avctx->codec_id == AV_CODEC_ID_WMV3IMAGE ? 64 : 0)) {
av_log(avctx, AV_LOG_ERROR, "Buffer overrun\n");
return AVERROR_INVALIDDATA;
}
if (get_bits_count(gb) < gb->size_in_bits - 8)
av_log(avctx, AV_LOG_WARNING, "Buffer not fully read\n");
return 0;
}
static void vc1_draw_sprites(VC1Context *v, SpriteData* sd)
{
int i, plane, row, sprite;
int sr_cache[2][2] = { { -1, -1 }, { -1, -1 } };
uint8_t* src_h[2][2];
int xoff[2], xadv[2], yoff[2], yadv[2], alpha;
int ysub[2];
MpegEncContext *s = &v->s;
for (i = 0; i <= v->two_sprites; i++) {
xoff[i] = av_clip(sd->coefs[i][2], 0, v->sprite_width-1 << 16);
xadv[i] = sd->coefs[i][0];
if (xadv[i] != 1<<16 || (v->sprite_width << 16) - (v->output_width << 16) - xoff[i])
xadv[i] = av_clip(xadv[i], 0, ((v->sprite_width<<16) - xoff[i] - 1) / v->output_width);
yoff[i] = av_clip(sd->coefs[i][5], 0, v->sprite_height-1 << 16);
yadv[i] = av_clip(sd->coefs[i][4], 0, ((v->sprite_height << 16) - yoff[i]) / v->output_height);
}
alpha = av_clip_uint16(sd->coefs[1][6]);
for (plane = 0; plane < (s->flags&CODEC_FLAG_GRAY ? 1 : 3); plane++) {
int width = v->output_width>>!!plane;
for (row = 0; row < v->output_height>>!!plane; row++) {
uint8_t *dst = v->sprite_output_frame->data[plane] +
v->sprite_output_frame->linesize[plane] * row;
for (sprite = 0; sprite <= v->two_sprites; sprite++) {
uint8_t *iplane = s->current_picture.f->data[plane];
int iline = s->current_picture.f->linesize[plane];
int ycoord = yoff[sprite] + yadv[sprite] * row;
int yline = ycoord >> 16;
int next_line;
ysub[sprite] = ycoord & 0xFFFF;
if (sprite) {
iplane = s->last_picture.f->data[plane];
iline = s->last_picture.f->linesize[plane];
}
next_line = FFMIN(yline + 1, (v->sprite_height >> !!plane) - 1) * iline;
if (!(xoff[sprite] & 0xFFFF) && xadv[sprite] == 1 << 16) {
src_h[sprite][0] = iplane + (xoff[sprite] >> 16) + yline * iline;
if (ysub[sprite])
src_h[sprite][1] = iplane + (xoff[sprite] >> 16) + next_line;
} else {
if (sr_cache[sprite][0] != yline) {
if (sr_cache[sprite][1] == yline) {
FFSWAP(uint8_t*, v->sr_rows[sprite][0], v->sr_rows[sprite][1]);
FFSWAP(int, sr_cache[sprite][0], sr_cache[sprite][1]);
} else {
v->vc1dsp.sprite_h(v->sr_rows[sprite][0], iplane + yline * iline, xoff[sprite], xadv[sprite], width);
sr_cache[sprite][0] = yline;
}
}
if (ysub[sprite] && sr_cache[sprite][1] != yline + 1) {
v->vc1dsp.sprite_h(v->sr_rows[sprite][1],
iplane + next_line, xoff[sprite],
xadv[sprite], width);
sr_cache[sprite][1] = yline + 1;
}
src_h[sprite][0] = v->sr_rows[sprite][0];
src_h[sprite][1] = v->sr_rows[sprite][1];
}
}
if (!v->two_sprites) {
if (ysub[0]) {
v->vc1dsp.sprite_v_single(dst, src_h[0][0], src_h[0][1], ysub[0], width);
} else {
memcpy(dst, src_h[0][0], width);
}
} else {
if (ysub[0] && ysub[1]) {
v->vc1dsp.sprite_v_double_twoscale(dst, src_h[0][0], src_h[0][1], ysub[0],
src_h[1][0], src_h[1][1], ysub[1], alpha, width);
} else if (ysub[0]) {
v->vc1dsp.sprite_v_double_onescale(dst, src_h[0][0], src_h[0][1], ysub[0],
src_h[1][0], alpha, width);
} else if (ysub[1]) {
v->vc1dsp.sprite_v_double_onescale(dst, src_h[1][0], src_h[1][1], ysub[1],
src_h[0][0], (1<<16)-1-alpha, width);
} else {
v->vc1dsp.sprite_v_double_noscale(dst, src_h[0][0], src_h[1][0], alpha, width);
}
}
}
if (!plane) {
for (i = 0; i <= v->two_sprites; i++) {
xoff[i] >>= 1;
yoff[i] >>= 1;
}
}
}
}
static int vc1_decode_sprites(VC1Context *v, GetBitContext* gb)
{
int ret;
MpegEncContext *s = &v->s;
AVCodecContext *avctx = s->avctx;
SpriteData sd;
memset(&sd, 0, sizeof(sd));
ret = vc1_parse_sprites(v, gb, &sd);
if (ret < 0)
return ret;
if (!s->current_picture.f || !s->current_picture.f->data[0]) {
av_log(avctx, AV_LOG_ERROR, "Got no sprites\n");
return -1;
}
if (v->two_sprites && (!s->last_picture_ptr || !s->last_picture.f->data[0])) {
av_log(avctx, AV_LOG_WARNING, "Need two sprites, only got one\n");
v->two_sprites = 0;
}
av_frame_unref(v->sprite_output_frame);
if ((ret = ff_get_buffer(avctx, v->sprite_output_frame, 0)) < 0)
return ret;
vc1_draw_sprites(v, &sd);
return 0;
}
static void vc1_sprite_flush(AVCodecContext *avctx)
{
VC1Context *v = avctx->priv_data;
MpegEncContext *s = &v->s;
AVFrame *f = s->current_picture.f;
int plane, i;
if (f && f->data[0])
for (plane = 0; plane < (s->flags&CODEC_FLAG_GRAY ? 1 : 3); plane++)
for (i = 0; i < v->sprite_height>>!!plane; i++)
memset(f->data[plane] + i * f->linesize[plane],
plane ? 128 : 0, f->linesize[plane]);
}
#endif
av_cold int ff_vc1_decode_init_alloc_tables(VC1Context *v)
{
MpegEncContext *s = &v->s;
int i;
int mb_height = FFALIGN(s->mb_height, 2);
v->mv_type_mb_plane = av_malloc (s->mb_stride * mb_height);
v->direct_mb_plane = av_malloc (s->mb_stride * mb_height);
v->forward_mb_plane = av_malloc (s->mb_stride * mb_height);
v->fieldtx_plane = av_mallocz(s->mb_stride * mb_height);
v->acpred_plane = av_malloc (s->mb_stride * mb_height);
v->over_flags_plane = av_malloc (s->mb_stride * mb_height);
v->n_allocated_blks = s->mb_width + 2;
v->block = av_malloc(sizeof(*v->block) * v->n_allocated_blks);
v->cbp_base = av_malloc(sizeof(v->cbp_base[0]) * 2 * s->mb_stride);
v->cbp = v->cbp_base + s->mb_stride;
v->ttblk_base = av_malloc(sizeof(v->ttblk_base[0]) * 2 * s->mb_stride);
v->ttblk = v->ttblk_base + s->mb_stride;
v->is_intra_base = av_mallocz(sizeof(v->is_intra_base[0]) * 2 * s->mb_stride);
v->is_intra = v->is_intra_base + s->mb_stride;
v->luma_mv_base = av_mallocz(sizeof(v->luma_mv_base[0]) * 2 * s->mb_stride);
v->luma_mv = v->luma_mv_base + s->mb_stride;
v->mb_type_base = av_malloc(s->b8_stride * (mb_height * 2 + 1) + s->mb_stride * (mb_height + 1) * 2);
v->mb_type[0] = v->mb_type_base + s->b8_stride + 1;
v->mb_type[1] = v->mb_type_base + s->b8_stride * (mb_height * 2 + 1) + s->mb_stride + 1;
v->mb_type[2] = v->mb_type[1] + s->mb_stride * (mb_height + 1);
v->blk_mv_type_base = av_mallocz( s->b8_stride * (mb_height * 2 + 1) + s->mb_stride * (mb_height + 1) * 2);
v->blk_mv_type = v->blk_mv_type_base + s->b8_stride + 1;
v->mv_f_base = av_mallocz(2 * (s->b8_stride * (mb_height * 2 + 1) + s->mb_stride * (mb_height + 1) * 2));
v->mv_f[0] = v->mv_f_base + s->b8_stride + 1;
v->mv_f[1] = v->mv_f[0] + (s->b8_stride * (mb_height * 2 + 1) + s->mb_stride * (mb_height + 1) * 2);
v->mv_f_next_base = av_mallocz(2 * (s->b8_stride * (mb_height * 2 + 1) + s->mb_stride * (mb_height + 1) * 2));
v->mv_f_next[0] = v->mv_f_next_base + s->b8_stride + 1;
v->mv_f_next[1] = v->mv_f_next[0] + (s->b8_stride * (mb_height * 2 + 1) + s->mb_stride * (mb_height + 1) * 2);
if (v->profile == PROFILE_ADVANCED) {
}
ff_intrax8_common_init(&v->x8,s);
if (s->avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || s->avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
for (i = 0; i < 4; i++)
if (!(v->sr_rows[i >> 1][i & 1] = av_malloc(v->output_width)))
return AVERROR(ENOMEM);
}
if (!v->mv_type_mb_plane || !v->direct_mb_plane || !v->acpred_plane || !v->over_flags_plane ||
!v->block || !v->cbp_base || !v->ttblk_base || !v->is_intra_base || !v->luma_mv_base ||
!v->mb_type_base) {
av_freep(&v->mv_type_mb_plane);
av_freep(&v->direct_mb_plane);
av_freep(&v->acpred_plane);
av_freep(&v->over_flags_plane);
av_freep(&v->block);
av_freep(&v->cbp_base);
av_freep(&v->ttblk_base);
av_freep(&v->is_intra_base);
av_freep(&v->luma_mv_base);
av_freep(&v->mb_type_base);
return AVERROR(ENOMEM);
}
return 0;
}
av_cold void ff_vc1_init_transposed_scantables(VC1Context *v)
{
int i;
for (i = 0; i < 64; i++) {
#define transpose(x) (((x) >> 3) | (((x) & 7) << 3))
v->zz_8x8[0][i] = transpose(ff_wmv1_scantable[0][i]);
v->zz_8x8[1][i] = transpose(ff_wmv1_scantable[1][i]);
v->zz_8x8[2][i] = transpose(ff_wmv1_scantable[2][i]);
v->zz_8x8[3][i] = transpose(ff_wmv1_scantable[3][i]);
v->zzi_8x8[i] = transpose(ff_vc1_adv_interlaced_8x8_zz[i]);
}
v->left_blk_sh = 0;
v->top_blk_sh = 3;
}
static av_cold int vc1_decode_init(AVCodecContext *avctx)
{
VC1Context *v = avctx->priv_data;
MpegEncContext *s = &v->s;
GetBitContext gb;
int ret;
v->output_width = avctx->width;
v->output_height = avctx->height;
if (!avctx->extradata_size || !avctx->extradata)
return -1;
if (!(avctx->flags & CODEC_FLAG_GRAY))
avctx->pix_fmt = ff_get_format(avctx, avctx->codec->pix_fmts);
else
avctx->pix_fmt = AV_PIX_FMT_GRAY8;
v->s.avctx = avctx;
if ((ret = ff_vc1_init_common(v)) < 0)
return ret;
if ((ret = ff_msmpeg4_decode_init(avctx)) < 0)
return ret;
if ((ret = ff_vc1_decode_init_alloc_tables(v)) < 0)
return ret;
ff_vc1_decode_end(avctx);
ff_blockdsp_init(&s->bdsp, avctx);
ff_h264chroma_init(&v->h264chroma, 8);
ff_qpeldsp_init(&s->qdsp);
if (avctx->codec_id == AV_CODEC_ID_WMV3 || avctx->codec_id == AV_CODEC_ID_WMV3IMAGE) {
int count = 0;
init_get_bits(&gb, avctx->extradata, avctx->extradata_size*8);
if ((ret = ff_vc1_decode_sequence_header(avctx, v, &gb)) < 0)
return ret;
count = avctx->extradata_size*8 - get_bits_count(&gb);
if (count > 0) {
av_log(avctx, AV_LOG_INFO, "Extra data: %i bits left, value: %X\n",
count, get_bits(&gb, count));
} else if (count < 0) {
av_log(avctx, AV_LOG_INFO, "Read %i bits in overflow\n", -count);
}
} else {
const uint8_t *start = avctx->extradata;
uint8_t *end = avctx->extradata + avctx->extradata_size;
const uint8_t *next;
int size, buf2_size;
uint8_t *buf2 = NULL;
int seq_initialized = 0, ep_initialized = 0;
if (avctx->extradata_size < 16) {
av_log(avctx, AV_LOG_ERROR, "Extradata size too small: %i\n", avctx->extradata_size);
return -1;
}
buf2 = av_mallocz(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
start = find_next_marker(start, end);
next = start;
for (; next < end; start = next) {
next = find_next_marker(start + 4, end);
size = next - start - 4;
if (size <= 0)
continue;
buf2_size = vc1_unescape_buffer(start + 4, size, buf2);
init_get_bits(&gb, buf2, buf2_size * 8);
switch (AV_RB32(start)) {
case VC1_CODE_SEQHDR:
if ((ret = ff_vc1_decode_sequence_header(avctx, v, &gb)) < 0) {
av_free(buf2);
return ret;
}
seq_initialized = 1;
break;
case VC1_CODE_ENTRYPOINT:
if ((ret = ff_vc1_decode_entry_point(avctx, v, &gb)) < 0) {
av_free(buf2);
return ret;
}
ep_initialized = 1;
break;
}
}
av_free(buf2);
if (!seq_initialized || !ep_initialized) {
av_log(avctx, AV_LOG_ERROR, "Incomplete extradata\n");
return -1;
}
v->res_sprite = (avctx->codec_id == AV_CODEC_ID_VC1IMAGE);
}
v->sprite_output_frame = av_frame_alloc();
if (!v->sprite_output_frame)
return AVERROR(ENOMEM);
avctx->profile = v->profile;
if (v->profile == PROFILE_ADVANCED)
avctx->level = v->level;
avctx->has_b_frames = !!avctx->max_b_frames;
if (v->color_prim == 1 || v->color_prim == 5 || v->color_prim == 6)
avctx->color_primaries = v->color_prim;
if (v->transfer_char == 1 || v->transfer_char == 7)
avctx->color_trc = v->transfer_char;
if (v->matrix_coef == 1 || v->matrix_coef == 6 || v->matrix_coef == 7)
avctx->colorspace = v->matrix_coef;
s->mb_width = (avctx->coded_width + 15) >> 4;
s->mb_height = (avctx->coded_height + 15) >> 4;
if (v->profile == PROFILE_ADVANCED || v->res_fasttx) {
ff_vc1_init_transposed_scantables(v);
} else {
memcpy(v->zz_8x8, ff_wmv1_scantable, 4*64);
v->left_blk_sh = 3;
v->top_blk_sh = 0;
}
if (avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
v->sprite_width = avctx->coded_width;
v->sprite_height = avctx->coded_height;
avctx->coded_width = avctx->width = v->output_width;
avctx->coded_height = avctx->height = v->output_height;
if (v->sprite_width > 1 << 14 ||
v->sprite_height > 1 << 14 ||
v->output_width > 1 << 14 ||
v->output_height > 1 << 14) return -1;
if ((v->sprite_width&1) || (v->sprite_height&1)) {
avpriv_request_sample(avctx, "odd sprites support");
return AVERROR_PATCHWELCOME;
}
}
return 0;
}
av_cold int ff_vc1_decode_end(AVCodecContext *avctx)
{
VC1Context *v = avctx->priv_data;
int i;
av_frame_free(&v->sprite_output_frame);
for (i = 0; i < 4; i++)
av_freep(&v->sr_rows[i >> 1][i & 1]);
av_freep(&v->hrd_rate);
av_freep(&v->hrd_buffer);
ff_mpv_common_end(&v->s);
av_freep(&v->mv_type_mb_plane);
av_freep(&v->direct_mb_plane);
av_freep(&v->forward_mb_plane);
av_freep(&v->fieldtx_plane);
av_freep(&v->acpred_plane);
av_freep(&v->over_flags_plane);
av_freep(&v->mb_type_base);
av_freep(&v->blk_mv_type_base);
av_freep(&v->mv_f_base);
av_freep(&v->mv_f_next_base);
av_freep(&v->block);
av_freep(&v->cbp_base);
av_freep(&v->ttblk_base);
av_freep(&v->is_intra_base);
av_freep(&v->luma_mv_base);
ff_intrax8_common_end(&v->x8);
return 0;
}
static int vc1_decode_frame(AVCodecContext *avctx, void *data,
int *got_frame, AVPacket *avpkt)
{
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size, n_slices = 0, i, ret;
VC1Context *v = avctx->priv_data;
MpegEncContext *s = &v->s;
AVFrame *pict = data;
uint8_t *buf2 = NULL;
const uint8_t *buf_start = buf, *buf_start_second_field = NULL;
int mb_height, n_slices1=-1;
struct {
uint8_t *buf;
GetBitContext gb;
int mby_start;
} *slices = NULL, *tmp;
v->second_field = 0;
if(s->flags & CODEC_FLAG_LOW_DELAY)
s->low_delay = 1;
if (buf_size == 0 || (buf_size == 4 && AV_RB32(buf) == VC1_CODE_ENDOFSEQ)) {
if (s->low_delay == 0 && s->next_picture_ptr) {
if ((ret = av_frame_ref(pict, s->next_picture_ptr->f)) < 0)
return ret;
s->next_picture_ptr = NULL;
*got_frame = 1;
}
return buf_size;
}
if (s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU) {
if (v->profile < PROFILE_ADVANCED)
avctx->pix_fmt = AV_PIX_FMT_VDPAU_WMV3;
else
avctx->pix_fmt = AV_PIX_FMT_VDPAU_VC1;
}
if (avctx->codec_id == AV_CODEC_ID_VC1 || avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
int buf_size2 = 0;
buf2 = av_mallocz(buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
if (!buf2)
return AVERROR(ENOMEM);
if (IS_MARKER(AV_RB32(buf))) {
const uint8_t *start, *end, *next;
int size;
next = buf;
for (start = buf, end = buf + buf_size; next < end; start = next) {
next = find_next_marker(start + 4, end);
size = next - start - 4;
if (size <= 0) continue;
switch (AV_RB32(start)) {
case VC1_CODE_FRAME:
if (avctx->hwaccel ||
s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
buf_start = start;
buf_size2 = vc1_unescape_buffer(start + 4, size, buf2);
break;
case VC1_CODE_FIELD: {
int buf_size3;
if (avctx->hwaccel ||
s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
buf_start_second_field = start;
tmp = av_realloc_array(slices, sizeof(*slices), (n_slices+1));
if (!tmp)
goto err;
slices = tmp;
slices[n_slices].buf = av_mallocz(buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
if (!slices[n_slices].buf)
goto err;
buf_size3 = vc1_unescape_buffer(start + 4, size,
slices[n_slices].buf);
init_get_bits(&slices[n_slices].gb, slices[n_slices].buf,
buf_size3 << 3);
slices[n_slices].mby_start = s->mb_height + 1 >> 1;
n_slices1 = n_slices - 1;
n_slices++;
break;
}
case VC1_CODE_ENTRYPOINT:
buf_size2 = vc1_unescape_buffer(start + 4, size, buf2);
init_get_bits(&s->gb, buf2, buf_size2 * 8);
ff_vc1_decode_entry_point(avctx, v, &s->gb);
break;
case VC1_CODE_SLICE: {
int buf_size3;
tmp = av_realloc_array(slices, sizeof(*slices), (n_slices+1));
if (!tmp)
goto err;
slices = tmp;
slices[n_slices].buf = av_mallocz(buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
if (!slices[n_slices].buf)
goto err;
buf_size3 = vc1_unescape_buffer(start + 4, size,
slices[n_slices].buf);
init_get_bits(&slices[n_slices].gb, slices[n_slices].buf,
buf_size3 << 3);
slices[n_slices].mby_start = get_bits(&slices[n_slices].gb, 9);
n_slices++;
break;
}
}
}
} else if (v->interlace && ((buf[0] & 0xC0) == 0xC0)) {
const uint8_t *divider;
int buf_size3;
divider = find_next_marker(buf, buf + buf_size);
if ((divider == (buf + buf_size)) || AV_RB32(divider) != VC1_CODE_FIELD) {
av_log(avctx, AV_LOG_ERROR, "Error in WVC1 interlaced frame\n");
goto err;
} else {
if (avctx->hwaccel ||
s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
buf_start_second_field = divider;
tmp = av_realloc_array(slices, sizeof(*slices), (n_slices+1));
if (!tmp)
goto err;
slices = tmp;
slices[n_slices].buf = av_mallocz(buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
if (!slices[n_slices].buf)
goto err;
buf_size3 = vc1_unescape_buffer(divider + 4, buf + buf_size - divider - 4, slices[n_slices].buf);
init_get_bits(&slices[n_slices].gb, slices[n_slices].buf,
buf_size3 << 3);
slices[n_slices].mby_start = s->mb_height + 1 >> 1;
n_slices1 = n_slices - 1;
n_slices++;
}
buf_size2 = vc1_unescape_buffer(buf, divider - buf, buf2);
} else {
buf_size2 = vc1_unescape_buffer(buf, buf_size, buf2);
}
init_get_bits(&s->gb, buf2, buf_size2*8);
} else
init_get_bits(&s->gb, buf, buf_size*8);
if (v->res_sprite) {
v->new_sprite = !get_bits1(&s->gb);
v->two_sprites = get_bits1(&s->gb);
if (avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
if (v->new_sprite) {
avctx->width = avctx->coded_width = v->sprite_width;
avctx->height = avctx->coded_height = v->sprite_height;
} else {
goto image;
}
}
}
if (s->context_initialized &&
(s->width != avctx->coded_width ||
s->height != avctx->coded_height)) {
ff_vc1_decode_end(avctx);
}
if (!s->context_initialized) {
if (ff_msmpeg4_decode_init(avctx) < 0)
goto err;
if (ff_vc1_decode_init_alloc_tables(v) < 0) {
ff_mpv_common_end(s);
goto err;
}
s->low_delay = !avctx->has_b_frames || v->res_sprite;
if (v->profile == PROFILE_ADVANCED) {
if(avctx->coded_width<=1 || avctx->coded_height<=1)
goto err;
s->h_edge_pos = avctx->coded_width;
s->v_edge_pos = avctx->coded_height;
}
}
v->pic_header_flag = 0;
v->first_pic_header_flag = 1;
if (v->profile < PROFILE_ADVANCED) {
if (ff_vc1_parse_frame_header(v, &s->gb) < 0) {
goto err;
}
} else {
if (ff_vc1_parse_frame_header_adv(v, &s->gb) < 0) {
goto err;
}
}
v->first_pic_header_flag = 0;
if (avctx->debug & FF_DEBUG_PICT_INFO)
av_log(v->s.avctx, AV_LOG_DEBUG, "pict_type: %c\n", av_get_picture_type_char(s->pict_type));
if ((avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE)
&& s->pict_type != AV_PICTURE_TYPE_I) {
av_log(v->s.avctx, AV_LOG_ERROR, "Sprite decoder: expected I-frame\n");
goto err;
}
if ((s->mb_height >> v->field_mode) == 0) {
av_log(v->s.avctx, AV_LOG_ERROR, "image too short\n");
goto err;
}
s->current_picture.f->pict_type = s->pict_type;
s->current_picture.f->key_frame = s->pict_type == AV_PICTURE_TYPE_I;
if (!s->last_picture_ptr && (s->pict_type == AV_PICTURE_TYPE_B || s->droppable)) {
av_log(v->s.avctx, AV_LOG_DEBUG, "Skipping B frame without reference frames\n");
goto end;
}
if ((avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type == AV_PICTURE_TYPE_B) ||
(avctx->skip_frame >= AVDISCARD_NONKEY && s->pict_type != AV_PICTURE_TYPE_I) ||
avctx->skip_frame >= AVDISCARD_ALL) {
goto end;
}
if (s->next_p_frame_damaged) {
if (s->pict_type == AV_PICTURE_TYPE_B)
goto end;
else
s->next_p_frame_damaged = 0;
}
if (ff_mpv_frame_start(s, avctx) < 0) {
goto err;
}
v->s.current_picture_ptr->field_picture = v->field_mode;
v->s.current_picture_ptr->f->interlaced_frame = (v->fcm != PROGRESSIVE);
v->s.current_picture_ptr->f->top_field_first = v->tff;
s->current_picture_ptr->f->repeat_pict = 0;
if (v->rff) {
s->current_picture_ptr->f->repeat_pict = 1;
} else if (v->rptfrm) {
s->current_picture_ptr->f->repeat_pict = v->rptfrm * 2;
}
s->me.qpel_put = s->qdsp.put_qpel_pixels_tab;
s->me.qpel_avg = s->qdsp.avg_qpel_pixels_tab;
if ((CONFIG_VC1_VDPAU_DECODER)
&&s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU) {
if (v->field_mode && buf_start_second_field) {
ff_vdpau_vc1_decode_picture(s, buf_start, buf_start_second_field - buf_start);
ff_vdpau_vc1_decode_picture(s, buf_start_second_field, (buf + buf_size) - buf_start_second_field);
} else {
ff_vdpau_vc1_decode_picture(s, buf_start, (buf + buf_size) - buf_start);
}
} else if (avctx->hwaccel) {
if (v->field_mode && buf_start_second_field) {
s->picture_structure = PICT_BOTTOM_FIELD - v->tff;
if (avctx->hwaccel->start_frame(avctx, buf_start, buf_start_second_field - buf_start) < 0)
goto err;
if (avctx->hwaccel->decode_slice(avctx, buf_start, buf_start_second_field - buf_start) < 0)
goto err;
if (avctx->hwaccel->end_frame(avctx) < 0)
goto err;
s->gb = slices[n_slices1 + 1].gb;
s->picture_structure = PICT_TOP_FIELD + v->tff;
v->second_field = 1;
v->pic_header_flag = 0;
if (ff_vc1_parse_frame_header_adv(v, &s->gb) < 0) {
av_log(avctx, AV_LOG_ERROR, "parsing header for second field failed");
goto err;
}
v->s.current_picture_ptr->f->pict_type = v->s.pict_type;
if (avctx->hwaccel->start_frame(avctx, buf_start_second_field, (buf + buf_size) - buf_start_second_field) < 0)
goto err;
if (avctx->hwaccel->decode_slice(avctx, buf_start_second_field, (buf + buf_size) - buf_start_second_field) < 0)
goto err;
if (avctx->hwaccel->end_frame(avctx) < 0)
goto err;
} else {
s->picture_structure = PICT_FRAME;
if (avctx->hwaccel->start_frame(avctx, buf_start, (buf + buf_size) - buf_start) < 0)
goto err;
if (avctx->hwaccel->decode_slice(avctx, buf_start, (buf + buf_size) - buf_start) < 0)
goto err;
if (avctx->hwaccel->end_frame(avctx) < 0)
goto err;
}
} else {
int header_ret = 0;
ff_mpeg_er_frame_start(s);
v->bits = buf_size * 8;
v->end_mb_x = s->mb_width;
if (v->field_mode) {
s->current_picture.f->linesize[0] <<= 1;
s->current_picture.f->linesize[1] <<= 1;
s->current_picture.f->linesize[2] <<= 1;
s->linesize <<= 1;
s->uvlinesize <<= 1;
}
mb_height = s->mb_height >> v->field_mode;
av_assert0 (mb_height > 0);
for (i = 0; i <= n_slices; i++) {
if (i > 0 && slices[i - 1].mby_start >= mb_height) {
if (v->field_mode <= 0) {
av_log(v->s.avctx, AV_LOG_ERROR, "Slice %d starts beyond "
"picture boundary (%d >= %d)\n", i,
slices[i - 1].mby_start, mb_height);
continue;
}
v->second_field = 1;
av_assert0((s->mb_height & 1) == 0);
v->blocks_off = s->b8_stride * (s->mb_height&~1);
v->mb_off = s->mb_stride * s->mb_height >> 1;
} else {
v->second_field = 0;
v->blocks_off = 0;
v->mb_off = 0;
}
if (i) {
v->pic_header_flag = 0;
if (v->field_mode && i == n_slices1 + 2) {
if ((header_ret = ff_vc1_parse_frame_header_adv(v, &s->gb)) < 0) {
av_log(v->s.avctx, AV_LOG_ERROR, "Field header damaged\n");
if (avctx->err_recognition & AV_EF_EXPLODE)
goto err;
continue;
}
} else if (get_bits1(&s->gb)) {
v->pic_header_flag = 1;
if ((header_ret = ff_vc1_parse_frame_header_adv(v, &s->gb)) < 0) {
av_log(v->s.avctx, AV_LOG_ERROR, "Slice header damaged\n");
if (avctx->err_recognition & AV_EF_EXPLODE)
goto err;
continue;
}
}
}
if (header_ret < 0)
continue;
s->start_mb_y = (i == 0) ? 0 : FFMAX(0, slices[i-1].mby_start % mb_height);
if (!v->field_mode || v->second_field)
s->end_mb_y = (i == n_slices ) ? mb_height : FFMIN(mb_height, slices[i].mby_start % mb_height);
else {
if (i >= n_slices) {
av_log(v->s.avctx, AV_LOG_ERROR, "first field slice count too large\n");
continue;
}
s->end_mb_y = (i <= n_slices1 + 1) ? mb_height : FFMIN(mb_height, slices[i].mby_start % mb_height);
}
if (s->end_mb_y <= s->start_mb_y) {
av_log(v->s.avctx, AV_LOG_ERROR, "end mb y %d %d invalid\n", s->end_mb_y, s->start_mb_y);
continue;
}
if (!v->p_frame_skipped && s->pict_type != AV_PICTURE_TYPE_I && !v->cbpcy_vlc) {
av_log(v->s.avctx, AV_LOG_ERROR, "missing cbpcy_vlc\n");
continue;
}
ff_vc1_decode_blocks(v);
if (i != n_slices)
s->gb = slices[i].gb;
}
if (v->field_mode) {
v->second_field = 0;
s->current_picture.f->linesize[0] >>= 1;
s->current_picture.f->linesize[1] >>= 1;
s->current_picture.f->linesize[2] >>= 1;
s->linesize >>= 1;
s->uvlinesize >>= 1;
if (v->s.pict_type != AV_PICTURE_TYPE_BI && v->s.pict_type != AV_PICTURE_TYPE_B) {
FFSWAP(uint8_t *, v->mv_f_next[0], v->mv_f[0]);
FFSWAP(uint8_t *, v->mv_f_next[1], v->mv_f[1]);
}
}
av_dlog(s->avctx, "Consumed %i/%i bits\n",
get_bits_count(&s->gb), s->gb.size_in_bits);
if(s->er.error_occurred && s->pict_type == AV_PICTURE_TYPE_B)
goto err;
if (!v->field_mode)
ff_er_frame_end(&s->er);
}
ff_mpv_frame_end(s);
if (avctx->codec_id == AV_CODEC_ID_WMV3IMAGE || avctx->codec_id == AV_CODEC_ID_VC1IMAGE) {
image:
avctx->width = avctx->coded_width = v->output_width;
avctx->height = avctx->coded_height = v->output_height;
if (avctx->skip_frame >= AVDISCARD_NONREF)
goto end;
#if CONFIG_WMV3IMAGE_DECODER || CONFIG_VC1IMAGE_DECODER
if (vc1_decode_sprites(v, &s->gb))
goto err;
#endif
if ((ret = av_frame_ref(pict, v->sprite_output_frame)) < 0)
goto err;
*got_frame = 1;
} else {
if (s->pict_type == AV_PICTURE_TYPE_B || s->low_delay) {
if ((ret = av_frame_ref(pict, s->current_picture_ptr->f)) < 0)
goto err;
ff_print_debug_info(s, s->current_picture_ptr, pict);
*got_frame = 1;
} else if (s->last_picture_ptr) {
if ((ret = av_frame_ref(pict, s->last_picture_ptr->f)) < 0)
goto err;
ff_print_debug_info(s, s->last_picture_ptr, pict);
*got_frame = 1;
}
}
end:
av_free(buf2);
for (i = 0; i < n_slices; i++)
av_free(slices[i].buf);
av_free(slices);
return buf_size;
err:
av_free(buf2);
for (i = 0; i < n_slices; i++)
av_free(slices[i].buf);
av_free(slices);
return -1;
}
static const AVProfile profiles[] = {
{ FF_PROFILE_VC1_SIMPLE, "Simple" },
{ FF_PROFILE_VC1_MAIN, "Main" },
{ FF_PROFILE_VC1_COMPLEX, "Complex" },
{ FF_PROFILE_VC1_ADVANCED, "Advanced" },
{ FF_PROFILE_UNKNOWN },
};
static const enum AVPixelFormat vc1_hwaccel_pixfmt_list_420[] = {
#if CONFIG_VC1_DXVA2_HWACCEL
AV_PIX_FMT_DXVA2_VLD,
#endif
#if CONFIG_VC1_VAAPI_HWACCEL
AV_PIX_FMT_VAAPI_VLD,
#endif
#if CONFIG_VC1_VDPAU_HWACCEL
AV_PIX_FMT_VDPAU,
#endif
AV_PIX_FMT_YUV420P,
AV_PIX_FMT_NONE
};
AVCodec ff_vc1_decoder = {
.name = "vc1",
.long_name = NULL_IF_CONFIG_SMALL("SMPTE VC-1"),
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_VC1,
.priv_data_size = sizeof(VC1Context),
.init = vc1_decode_init,
.close = ff_vc1_decode_end,
.decode = vc1_decode_frame,
.flush = ff_mpeg_flush,
.capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY,
.pix_fmts = vc1_hwaccel_pixfmt_list_420,
.profiles = NULL_IF_CONFIG_SMALL(profiles)
};
#if CONFIG_WMV3_DECODER
AVCodec ff_wmv3_decoder = {
.name = "wmv3",
.long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 9"),
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_WMV3,
.priv_data_size = sizeof(VC1Context),
.init = vc1_decode_init,
.close = ff_vc1_decode_end,
.decode = vc1_decode_frame,
.flush = ff_mpeg_flush,
.capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY,
.pix_fmts = vc1_hwaccel_pixfmt_list_420,
.profiles = NULL_IF_CONFIG_SMALL(profiles)
};
#endif
#if CONFIG_WMV3_VDPAU_DECODER
AVCodec ff_wmv3_vdpau_decoder = {
.name = "wmv3_vdpau",
.long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 9 VDPAU"),
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_WMV3,
.priv_data_size = sizeof(VC1Context),
.init = vc1_decode_init,
.close = ff_vc1_decode_end,
.decode = vc1_decode_frame,
.capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_HWACCEL_VDPAU,
.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_VDPAU_WMV3, AV_PIX_FMT_NONE },
.profiles = NULL_IF_CONFIG_SMALL(profiles)
};
#endif
#if CONFIG_VC1_VDPAU_DECODER
AVCodec ff_vc1_vdpau_decoder = {
.name = "vc1_vdpau",
.long_name = NULL_IF_CONFIG_SMALL("SMPTE VC-1 VDPAU"),
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_VC1,
.priv_data_size = sizeof(VC1Context),
.init = vc1_decode_init,
.close = ff_vc1_decode_end,
.decode = vc1_decode_frame,
.capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_HWACCEL_VDPAU,
.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_VDPAU_VC1, AV_PIX_FMT_NONE },
.profiles = NULL_IF_CONFIG_SMALL(profiles)
};
#endif
#if CONFIG_WMV3IMAGE_DECODER
AVCodec ff_wmv3image_decoder = {
.name = "wmv3image",
.long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 9 Image"),
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_WMV3IMAGE,
.priv_data_size = sizeof(VC1Context),
.init = vc1_decode_init,
.close = ff_vc1_decode_end,
.decode = vc1_decode_frame,
.capabilities = CODEC_CAP_DR1,
.flush = vc1_sprite_flush,
.pix_fmts = (const enum AVPixelFormat[]) {
AV_PIX_FMT_YUV420P,
AV_PIX_FMT_NONE
},
};
#endif
#if CONFIG_VC1IMAGE_DECODER
AVCodec ff_vc1image_decoder = {
.name = "vc1image",
.long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 9 Image v2"),
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_VC1IMAGE,
.priv_data_size = sizeof(VC1Context),
.init = vc1_decode_init,
.close = ff_vc1_decode_end,
.decode = vc1_decode_frame,
.capabilities = CODEC_CAP_DR1,
.flush = vc1_sprite_flush,
.pix_fmts = (const enum AVPixelFormat[]) {
AV_PIX_FMT_YUV420P,
AV_PIX_FMT_NONE
},
};
#endif