本文整理汇总了C++中AV_RB64函数的典型用法代码示例。如果您正苦于以下问题：C++ AV_RB64函数的具体用法？C++ AV_RB64怎么用？C++ AV_RB64使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。
在下文中一共展示了AV_RB64函数的16个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C++代码示例。
示例1: qdraw_probe
static int qdraw_probe(AVProbeData *p)
{
const uint8_t *b = p->buf;
if ( p->buf_size >= 528
&& (AV_RB64(b + 520) & 0xFFFFFFFFFFFF) == 0x001102ff0c00
&& AV_RB16(b + 520)
&& AV_RB16(b + 518))
return AVPROBE_SCORE_MAX * 3 / 4;
if ( (AV_RB64(b + 8) & 0xFFFFFFFFFFFF) == 0x001102ff0c00
&& AV_RB16(b + 8)
&& AV_RB16(b + 6))
return AVPROBE_SCORE_EXTENSION / 4;
return 0;
}
开发者ID:Innovattic，项目名称:FFmpeg，代码行数:15，代码来源:img2dec.c
示例2: ff_amf_tag_contents
static void ff_amf_tag_contents(void *ctx, const uint8_t *data, const uint8_t *data_end)
{
unsigned int size;
char buf[1024];
if (data >= data_end)
return;
switch (*data++) {
case AMF_DATA_TYPE_NUMBER:
av_log(ctx, AV_LOG_DEBUG, " number %g\n", av_int2dbl(AV_RB64(data)));
return;
case AMF_DATA_TYPE_BOOL:
av_log(ctx, AV_LOG_DEBUG, " bool %d\n", *data);
return;
case AMF_DATA_TYPE_STRING:
case AMF_DATA_TYPE_LONG_STRING:
if (data[-1] == AMF_DATA_TYPE_STRING) {
size = bytestream_get_be16(&data);
} else {
size = bytestream_get_be32(&data);
}
size = FFMIN(size, sizeof(buf) - 1);
memcpy(buf, data, size);
buf[size] = 0;
av_log(ctx, AV_LOG_DEBUG, " string '%s'\n", buf);
return;
case AMF_DATA_TYPE_NULL:
av_log(ctx, AV_LOG_DEBUG, " NULL\n");
return;
case AMF_DATA_TYPE_ARRAY:
data += 4;
case AMF_DATA_TYPE_OBJECT:
av_log(ctx, AV_LOG_DEBUG, " {\n");
for (;;) {
int t;
size = bytestream_get_be16(&data);
av_strlcpy(buf, data, FFMIN(sizeof(buf), size + 1));
if (!size) {
av_log(ctx, AV_LOG_DEBUG, " }\n");
data++;
break;
}
if (size >= data_end - data)
return;
data += size;
av_log(ctx, AV_LOG_DEBUG, " %s: ", buf);
ff_amf_tag_contents(ctx, data, data_end);
t = ff_amf_tag_size(data, data_end);
if (t < 0 || t >= data_end - data)
return;
data += t;
}
return;
case AMF_DATA_TYPE_OBJECT_END:
av_log(ctx, AV_LOG_DEBUG, " }\n");
return;
default:
return;
}
}
开发者ID:LazyZhu，项目名称:rt-n56u-1，代码行数:60，代码来源:rtmppkt.c
示例3: rtcp_parse_packet
static int rtcp_parse_packet(RTPDemuxContext *s, const unsigned char *buf, int len)
{
int payload_len;
while (len >= 2) {
switch (buf[1]) {
case RTCP_SR:
if (len < 16) {
av_log(NULL, AV_LOG_ERROR, "Invalid length for RTCP SR packet\n");
return AVERROR_INVALIDDATA;
}
payload_len = (AV_RB16(buf + 2) + 1) * 4;
s->last_rtcp_ntp_time = AV_RB64(buf + 8);
s->last_rtcp_timestamp = AV_RB32(buf + 16);
if (s->first_rtcp_ntp_time == AV_NOPTS_VALUE) {
s->first_rtcp_ntp_time = s->last_rtcp_ntp_time;
if (!s->base_timestamp)
s->base_timestamp = s->last_rtcp_timestamp;
s->rtcp_ts_offset = s->last_rtcp_timestamp - s->base_timestamp;
}
buf += payload_len;
len -= payload_len;
break;
case RTCP_BYE:
return -RTCP_BYE;
default:
return -1;
}
}
return -1;
}
开发者ID:AbdunNurTomal，项目名称:AndZop，代码行数:32，代码来源:rtpdec.c
示例4: xpm_probe
static int xpm_probe(AVProbeData *p)
{
const uint8_t *b = p->buf;
if (AV_RB64(b) == 0x2f2a2058504d202a && *(b+8) == '/')
return AVPROBE_SCORE_MAX - 1;
return 0;
}
开发者ID:Innovattic，项目名称:FFmpeg，代码行数:8，代码来源:img2dec.c
示例5: png_probe
static int png_probe(AVProbeData *p)
{
const uint8_t *b = p->buf;
if (AV_RB64(b) == 0x89504e470d0a1a0a)
return AVPROBE_SCORE_MAX - 1;
return 0;
}
开发者ID:Innovattic，项目名称:FFmpeg，代码行数:8，代码来源:img2dec.c
示例6: rtcp_parse_packet
static int rtcp_parse_packet(RTPDemuxContext *s, const unsigned char *buf, int len)
{
if (buf[1] != 200)
return -1;
s->last_rtcp_ntp_time = AV_RB64(buf + 8);
s->last_rtcp_timestamp = AV_RB32(buf + 16);
return 0;
}
开发者ID:arthurrauter，项目名称:mconf-mobile，代码行数:8，代码来源:rtpdec.c
示例7: ffm_read_packet
/* return < 0 if eof */
static int ffm_read_packet(AVFormatContext *s, AVPacket *pkt)
{
int size;
FFMContext *ffm = s->priv_data;
int duration, ret;
switch(ffm->read_state) {
case READ_HEADER:
if ((ret = ffm_is_avail_data(s, FRAME_HEADER_SIZE+4)) < 0)
return ret;
av_dlog(s, "pos=%08"PRIx64" spos=%"PRIx64", write_index=%"PRIx64" size=%"PRIx64"\n",
avio_tell(s->pb), s->pb->pos, ffm->write_index, ffm->file_size);
if (ffm_read_data(s, ffm->header, FRAME_HEADER_SIZE, 1) !=
FRAME_HEADER_SIZE)
return -1;
if (ffm->header[1] & FLAG_DTS)
if (ffm_read_data(s, ffm->header+16, 4, 1) != 4)
return -1;
ffm->read_state = READ_DATA;
/* fall through */
case READ_DATA:
size = AV_RB24(ffm->header + 2);
if ((ret = ffm_is_avail_data(s, size)) < 0)
return ret;
duration = AV_RB24(ffm->header + 5);
if (av_new_packet(pkt, size) < 0) {
return AVERROR(ENOMEM);
}
pkt->stream_index = ffm->header[0];
if ((unsigned)pkt->stream_index >= s->nb_streams) {
av_log(s, AV_LOG_ERROR, "invalid stream index %d\n", pkt->stream_index);
av_free_packet(pkt);
ffm->read_state = READ_HEADER;
return -1;
}
pkt->pos = avio_tell(s->pb);
if (ffm->header[1] & FLAG_KEY_FRAME)
pkt->flags |= AV_PKT_FLAG_KEY;
ffm->read_state = READ_HEADER;
if (ffm_read_data(s, pkt->data, size, 0) != size) {
/* bad case: desynchronized packet. we cancel all the packet loading */
av_free_packet(pkt);
return -1;
}
pkt->pts = AV_RB64(ffm->header+8);
if (ffm->header[1] & FLAG_DTS)
pkt->dts = pkt->pts - AV_RB32(ffm->header+16);
else
pkt->dts = pkt->pts;
pkt->duration = duration;
break;
}
return 0;
}
开发者ID:AlexZhangOG，项目名称:FFmpeg，代码行数:59，代码来源:ffmdec.c
示例8: j2k_probe
static int j2k_probe(AVProbeData *p)
{
const uint8_t *b = p->buf;
if (AV_RB64(b) == 0x0000000c6a502020 ||
AV_RB32(b) == 0xff4fff51)
return AVPROBE_SCORE_EXTENSION + 1;
return 0;
}
开发者ID:Innovattic，项目名称:FFmpeg，代码行数:9，代码来源:img2dec.c
示例9: dds_probe
static int dds_probe(AVProbeData *p)
{
const uint8_t *b = p->buf;
if ( AV_RB64(b) == 0x444453207c000000
&& AV_RL32(b + 8)
&& AV_RL32(b + 12))
return AVPROBE_SCORE_MAX - 1;
return 0;
}
开发者ID:Innovattic，项目名称:FFmpeg，代码行数:10，代码来源:img2dec.c
示例10: redspark_probe
static int redspark_probe(AVProbeData *p)
{
uint32_t key, data;
uint8_t header[8];
/* Decrypt first 8 bytes of the header */
data = AV_RB32(p->buf);
key = data ^ 0x52656453;
data ^= key;
AV_WB32(header, data);
key = rol(key, 11);
key += rol(key, 3);
data = AV_RB32(p->buf + 4) ^ key;
AV_WB32(header + 4, data);
if (AV_RB64(header) == AV_RB64("RedSpark"))
return AVPROBE_SCORE_MAX;
return 0;
}
开发者ID:15806905685，项目名称:FFmpeg，代码行数:21，代码来源:redspark.c
示例11: ff_amf_get_field_value
int ff_amf_get_field_value(const uint8_t *data, const uint8_t *data_end,
const uint8_t *name, uint8_t *dst, int dst_size)
{
int namelen = strlen((char *)name);
int len;
while (*data != AMF_DATA_TYPE_OBJECT && data < data_end)
{
len = ff_amf_tag_size(data, data_end);
if (len < 0)
len = data_end - data;
data += len;
}
if (data_end - data < 3)
return -1;
data++;
for (;;)
{
int size = bytestream_get_be16(&data);
if (!size)
break;
if (data + size >= data_end || data + size < data)
return -1;
data += size;
if (size == namelen && !memcmp(data-size, name, namelen))
{
switch (*data++)
{
case AMF_DATA_TYPE_NUMBER:
snprintf((char *)dst, dst_size, "%g", av_int2dbl(AV_RB64(data)));
break;
case AMF_DATA_TYPE_BOOL:
snprintf((char *)dst, dst_size, "%s", *data ? "true" : "false");
break;
case AMF_DATA_TYPE_STRING:
len = bytestream_get_be16(&data);
av_strlcpy((char *)dst, (const char*)data, FFMIN(len+1, dst_size));
break;
default:
return -1;
}
return 0;
}
len = ff_amf_tag_size(data, data_end);
if (len < 0 || data + len >= data_end || data + len < data)
return -1;
data += len;
}
return -1;
}
开发者ID:hicks0074，项目名称:freescale_omx_framework，代码行数:50，代码来源:rtmppkt.c
示例12: av_packet_split_side_data
int av_packet_split_side_data(AVPacket *pkt){
if (!pkt->side_data_elems && pkt->size >12 && AV_RB64(pkt->data + pkt->size - 8) == FF_MERGE_MARKER){
int i;
unsigned int size, orig_pktsize = pkt->size;
uint8_t *p;
p = pkt->data + pkt->size - 8 - 5;
for (i=1; ; i++){
size = AV_RB32(p);
if (size>INT_MAX || p - pkt->data < size)
return 0;
if (p[4]&128)
break;
p-= size+5;
}
pkt->side_data = av_malloc(i * sizeof(*pkt->side_data));
if (!pkt->side_data)
return AVERROR(ENOMEM);
p= pkt->data + pkt->size - 8 - 5;
for (i=0; ; i++){
size= AV_RB32(p);
av_assert0(size<=INT_MAX && p - pkt->data >= size);
pkt->side_data[i].data = av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE);
pkt->side_data[i].size = size;
pkt->side_data[i].type = p[4]&127;
if (!pkt->side_data[i].data)
return AVERROR(ENOMEM);
memcpy(pkt->side_data[i].data, p-size, size);
pkt->size -= size + 5;
if(p[4]&128)
break;
p-= size+5;
}
pkt->size -= 8;
/* FFMIN() prevents overflow in case the packet wasn't allocated with
* proper padding.
* If the side data is smaller than the buffer padding size, the
* remaining bytes should have already been filled with zeros by the
* original packet allocation anyway. */
memset(pkt->data + pkt->size, 0,
FFMIN(orig_pktsize - pkt->size, FF_INPUT_BUFFER_PADDING_SIZE));
pkt->side_data_elems = i+1;
return 1;
}
return 0;
}
开发者ID:Johnsonwu，项目名称:FFmpeg，代码行数:48，代码来源:avpacket.c
示例13: av_packet_split_side_data
int av_packet_split_side_data(AVPacket *pkt){
if (!pkt->side_data_elems && pkt->size >12 && AV_RB64(pkt->data + pkt->size - 8) == FF_MERGE_MARKER){
int i;
unsigned int size;
uint8_t *p;
p = pkt->data + pkt->size - 8 - 5;
for (i=1; ; i++){
size = AV_RB32(p);
if (size>INT_MAX - 5 || p - pkt->data < size)
return 0;
if (p[4]&128)
break;
if (p - pkt->data < size + 5)
return 0;
p-= size+5;
}
if (i > AV_PKT_DATA_NB)
return AVERROR(ERANGE);
pkt->side_data = av_malloc_array(i, sizeof(*pkt->side_data));
if (!pkt->side_data)
return AVERROR(ENOMEM);
p= pkt->data + pkt->size - 8 - 5;
for (i=0; ; i++){
size= AV_RB32(p);
av_assert0(size<=INT_MAX - 5 && p - pkt->data >= size);
pkt->side_data[i].data = av_mallocz(size + AV_INPUT_BUFFER_PADDING_SIZE);
pkt->side_data[i].size = size;
pkt->side_data[i].type = p[4]&127;
if (!pkt->side_data[i].data)
return AVERROR(ENOMEM);
memcpy(pkt->side_data[i].data, p-size, size);
pkt->size -= size + 5;
if(p[4]&128)
break;
p-= size+5;
}
pkt->size -= 8;
pkt->side_data_elems = i+1;
return 1;
}
return 0;
}
开发者ID:Diagonactic，项目名称:plex-new-transcoder，代码行数:46，代码来源:avpacket.c
示例14: mov_text_decode_frame
static int mov_text_decode_frame(AVCodecContext *avctx,
void *data, int *got_sub_ptr, AVPacket *avpkt)
{
AVSubtitle *sub = data;
MovTextContext *m = avctx->priv_data;
int ret, ts_start, ts_end;
AVBPrint buf;
char *ptr = avpkt->data;
char *end;
int text_length, tsmb_type, ret_tsmb;
uint64_t tsmb_size;
const uint8_t *tsmb;
if (!ptr || avpkt->size < 2)
return AVERROR_INVALIDDATA;
/*
* A packet of size two with value zero is an empty subtitle
* used to mark the end of the previous non-empty subtitle.
* We can just drop them here as we have duration information
* already. If the value is non-zero, then it's technically a
* bad packet.
*/
if (avpkt->size == 2)
return AV_RB16(ptr) == 0 ? 0 : AVERROR_INVALIDDATA;
/*
* The first two bytes of the packet are the length of the text string
* In complex cases, there are style descriptors appended to the string
* so we can't just assume the packet size is the string size.
*/
text_length = AV_RB16(ptr);
end = ptr + FFMIN(2 + text_length, avpkt->size);
ptr += 2;
ts_start = av_rescale_q(avpkt->pts,
avctx->time_base,
(AVRational){1,100});
ts_end = av_rescale_q(avpkt->pts + avpkt->duration,
avctx->time_base,
(AVRational){1,100});
tsmb_size = 0;
m->tracksize = 2 + text_length;
m->style_entries = 0;
m->box_flags = 0;
m->count_s = 0;
// Note that the spec recommends lines be no longer than 2048 characters.
av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
if (text_length + 2 != avpkt->size) {
while (m->tracksize + 8 <= avpkt->size) {
// A box is a minimum of 8 bytes.
tsmb = ptr + m->tracksize - 2;
tsmb_size = AV_RB32(tsmb);
tsmb += 4;
tsmb_type = AV_RB32(tsmb);
tsmb += 4;
if (tsmb_size == 1) {
if (m->tracksize + 16 > avpkt->size)
break;
tsmb_size = AV_RB64(tsmb);
tsmb += 8;
m->size_var = 16;
} else
m->size_var = 8;
//size_var is equal to 8 or 16 depending on the size of box
if (m->tracksize + tsmb_size > avpkt->size)
break;
for (size_t i = 0; i < box_count; i++) {
if (tsmb_type == box_types[i].type) {
if (m->tracksize + m->size_var + box_types[i].base_size > avpkt->size)
break;
ret_tsmb = box_types[i].decode(tsmb, m, avpkt);
if (ret_tsmb == -1)
break;
}
}
m->tracksize = m->tracksize + tsmb_size;
}
text_to_ass(&buf, ptr, end, m);
mov_text_cleanup(m);
} else
text_to_ass(&buf, ptr, end, m);
ret = ff_ass_add_rect_bprint(sub, &buf, ts_start, ts_end - ts_start);
av_bprint_finalize(&buf, NULL);
if (ret < 0)
return ret;
*got_sub_ptr = sub->num_rects > 0;
return avpkt->size;
}
开发者ID:kak2，项目名称:FFmpeg，代码行数:94，代码来源:movtextdec.c
示例15: mov_text_decode_frame
static int mov_text_decode_frame(AVCodecContext *avctx,
void *data, int *got_sub_ptr, AVPacket *avpkt)
{
AVSubtitle *sub = data;
int ret, ts_start, ts_end;
AVBPrint buf;
char *ptr = avpkt->data;
char *end;
//char *ptr_temp;
int text_length, tsmb_type, style_entries;
uint64_t tsmb_size, tracksize;
StyleBox **s = {0, };
StyleBox *s_temp;
const uint8_t *tsmb;
int count, i, size_var;
if (!ptr || avpkt->size < 2)
return AVERROR_INVALIDDATA;
/*
* A packet of size two with value zero is an empty subtitle
* used to mark the end of the previous non-empty subtitle.
* We can just drop them here as we have duration information
* already. If the value is non-zero, then it's technically a
* bad packet.
*/
if (avpkt->size == 2)
return AV_RB16(ptr) == 0 ? 0 : AVERROR_INVALIDDATA;
/*
* The first two bytes of the packet are the length of the text string
* In complex cases, there are style descriptors appended to the string
* so we can't just assume the packet size is the string size.
*/
text_length = AV_RB16(ptr);
end = ptr + FFMIN(2 + text_length, avpkt->size);
ptr += 2;
ts_start = av_rescale_q(avpkt->pts,
avctx->time_base,
(AVRational){1,100});
ts_end = av_rescale_q(avpkt->pts + avpkt->duration,
avctx->time_base,
(AVRational){1,100});
tsmb_size = 0;
tracksize = 2 + text_length;
// Note that the spec recommends lines be no longer than 2048 characters.
av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
if (text_length + 2 != avpkt->size) {
while (tracksize + 8 <= avpkt->size) {
// A box is a minimum of 8 bytes.
tsmb = ptr + tracksize - 2;
tsmb_size = AV_RB32(tsmb);
tsmb += 4;
tsmb_type = AV_RB32(tsmb);
tsmb += 4;
if (tsmb_size == 1) {
if (tracksize + 16 > avpkt->size)
break;
tsmb_size = AV_RB64(tsmb);
tsmb += 8;
size_var = 18;
} else
size_var = 10;
//size_var is equal to 10 or 18 depending on the size of box
if (tracksize + tsmb_size > avpkt->size)
break;
if (tsmb_type == MKBETAG('s','t','y','l')) {
if (tracksize + size_var > avpkt->size)
break;
style_entries = AV_RB16(tsmb);
tsmb += 2;
// A single style record is of length 12 bytes.
if (tracksize + size_var + style_entries * 12 > avpkt->size)
break;
count = 0;
for(i = 0; i < style_entries; i++) {
s_temp = av_malloc(sizeof(*s_temp));
if (!s_temp)
goto error;
s_temp->style_start = AV_RB16(tsmb);
tsmb += 2;
s_temp->style_end = AV_RB16(tsmb);
tsmb += 2;
// fontID = AV_RB16(tsmb);
tsmb += 2;
s_temp->style_flag = AV_RB8(tsmb);
av_dynarray_add(&s, &count, s_temp);
if(!s)
goto error;
//fontsize=AV_RB8(tsmb);
tsmb += 2;
// text-color-rgba
//.........这里部分代码省略.........
开发者ID:YuYongzhi，项目名称:FFmpeg，代码行数:101，代码来源:movtextdec.c
示例16: amf_tag_contents
static void amf_tag_contents(void *ctx, const uint8_t *data,
const uint8_t *data_end)
{
unsigned int size, nb = -1;
char buf[1024];
AMFDataType type;
int parse_key = 1;
if (data >= data_end)
return;
switch ((type = *data++)) {
case AMF_DATA_TYPE_NUMBER:
av_log(ctx, AV_LOG_DEBUG, " number %g\n", av_int2double(AV_RB64(data)));
return;
case AMF_DATA_TYPE_BOOL:
av_log(ctx, AV_LOG_DEBUG, " bool %d\n", *data);
return;
case AMF_DATA_TYPE_STRING:
case AMF_DATA_TYPE_LONG_STRING:
if (type == AMF_DATA_TYPE_STRING) {
size = bytestream_get_be16(&data);
} else {
size = bytestream_get_be32(&data);
}
size = FFMIN(size, sizeof(buf) - 1);
memcpy(buf, data, size);
buf[size] = 0;
av_log(ctx, AV_LOG_DEBUG, " string '%s'\n", buf);
return;
case AMF_DATA_TYPE_NULL:
av_log(ctx, AV_LOG_DEBUG, " NULL\n");
return;
case AMF_DATA_TYPE_ARRAY:
parse_key = 0;
case AMF_DATA_TYPE_MIXEDARRAY:
nb = bytestream_get_be32(&data);
case AMF_DATA_TYPE_OBJECT:
av_log(ctx, AV_LOG_DEBUG, " {\n");
while (nb-- > 0 || type != AMF_DATA_TYPE_ARRAY) {
int t;
if (parse_key) {
size = bytestream_get_be16(&data);
size = FFMIN(size, sizeof(buf) - 1);
if (!size) {
av_log(ctx, AV_LOG_DEBUG, " }\n");
data++;
break;
}
memcpy(buf, data, size);
buf[size] = 0;
if (size >= data_end - data)
return;
data += size;
av_log(ctx, AV_LOG_DEBUG, " %s: ", buf);
}
amf_tag_contents(ctx, data, data_end);
t = ff_amf_tag_size(data, data_end);
if (t < 0 || t >= data_end - data)
return;
data += t;
}
return;
case AMF_DATA_TYPE_OBJECT_END:
av_log(ctx, AV_LOG_DEBUG, " }\n");
return;
default:
return;
}
}
开发者ID:Acidburn0zzz，项目名称:libav，代码行数:69，代码来源:rtmppkt.c
注：本文中的AV_RB64函数示例整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。 |
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