forked from KolibriOS/kolibrios
upload sdk
git-svn-id: svn://kolibrios.org@4349 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Sergey Semyonov (Serge)
644
contrib/sdk/sources/ffmpeg/libavformat/rtmppkt.c
Normal file
644
contrib/sdk/sources/ffmpeg/libavformat/rtmppkt.c
Normal file
@@ -0,0 +1,644 @@
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/*
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* RTMP input format
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* Copyright (c) 2009 Konstantin Shishkov
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavcodec/bytestream.h"
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#include "libavutil/avstring.h"
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#include "libavutil/intfloat.h"
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#include "avformat.h"
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#include "rtmppkt.h"
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#include "flv.h"
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#include "url.h"
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void ff_amf_write_bool(uint8_t **dst, int val)
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{
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bytestream_put_byte(dst, AMF_DATA_TYPE_BOOL);
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bytestream_put_byte(dst, val);
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}
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void ff_amf_write_number(uint8_t **dst, double val)
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{
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bytestream_put_byte(dst, AMF_DATA_TYPE_NUMBER);
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bytestream_put_be64(dst, av_double2int(val));
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}
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void ff_amf_write_string(uint8_t **dst, const char *str)
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{
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bytestream_put_byte(dst, AMF_DATA_TYPE_STRING);
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bytestream_put_be16(dst, strlen(str));
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bytestream_put_buffer(dst, str, strlen(str));
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}
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void ff_amf_write_string2(uint8_t **dst, const char *str1, const char *str2)
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{
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int len1 = 0, len2 = 0;
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if (str1)
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len1 = strlen(str1);
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if (str2)
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len2 = strlen(str2);
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bytestream_put_byte(dst, AMF_DATA_TYPE_STRING);
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bytestream_put_be16(dst, len1 + len2);
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bytestream_put_buffer(dst, str1, len1);
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bytestream_put_buffer(dst, str2, len2);
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}
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void ff_amf_write_null(uint8_t **dst)
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{
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bytestream_put_byte(dst, AMF_DATA_TYPE_NULL);
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}
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void ff_amf_write_object_start(uint8_t **dst)
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{
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bytestream_put_byte(dst, AMF_DATA_TYPE_OBJECT);
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}
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void ff_amf_write_field_name(uint8_t **dst, const char *str)
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{
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bytestream_put_be16(dst, strlen(str));
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bytestream_put_buffer(dst, str, strlen(str));
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}
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void ff_amf_write_object_end(uint8_t **dst)
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{
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/* first two bytes are field name length = 0,
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* AMF object should end with it and end marker
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*/
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bytestream_put_be24(dst, AMF_DATA_TYPE_OBJECT_END);
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}
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int ff_amf_read_bool(GetByteContext *bc, int *val)
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{
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if (bytestream2_get_byte(bc) != AMF_DATA_TYPE_BOOL)
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return AVERROR_INVALIDDATA;
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*val = bytestream2_get_byte(bc);
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return 0;
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}
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int ff_amf_read_number(GetByteContext *bc, double *val)
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{
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uint64_t read;
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if (bytestream2_get_byte(bc) != AMF_DATA_TYPE_NUMBER)
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return AVERROR_INVALIDDATA;
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read = bytestream2_get_be64(bc);
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*val = av_int2double(read);
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return 0;
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}
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int ff_amf_read_string(GetByteContext *bc, uint8_t *str,
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int strsize, int *length)
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{
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int stringlen = 0;
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int readsize;
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if (bytestream2_get_byte(bc) != AMF_DATA_TYPE_STRING)
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return AVERROR_INVALIDDATA;
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stringlen = bytestream2_get_be16(bc);
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if (stringlen + 1 > strsize)
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return AVERROR(EINVAL);
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readsize = bytestream2_get_buffer(bc, str, stringlen);
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if (readsize != stringlen) {
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av_log(NULL, AV_LOG_WARNING,
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"Unable to read as many bytes as AMF string signaled\n");
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}
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str[readsize] = '\0';
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*length = FFMIN(stringlen, readsize);
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return 0;
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}
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int ff_amf_read_null(GetByteContext *bc)
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{
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if (bytestream2_get_byte(bc) != AMF_DATA_TYPE_NULL)
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return AVERROR_INVALIDDATA;
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return 0;
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}
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int ff_rtmp_check_alloc_array(RTMPPacket **prev_pkt, int *nb_prev_pkt,
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int channel)
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{
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int nb_alloc;
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RTMPPacket *ptr;
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if (channel < *nb_prev_pkt)
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return 0;
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nb_alloc = channel + 16;
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// This can't use the av_reallocp family of functions, since we
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// would need to free each element in the array before the array
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// itself is freed.
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ptr = av_realloc_array(*prev_pkt, nb_alloc, sizeof(**prev_pkt));
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if (!ptr)
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return AVERROR(ENOMEM);
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memset(ptr + *nb_prev_pkt, 0, (nb_alloc - *nb_prev_pkt) * sizeof(*ptr));
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*prev_pkt = ptr;
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*nb_prev_pkt = nb_alloc;
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return 0;
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}
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int ff_rtmp_packet_read(URLContext *h, RTMPPacket *p,
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int chunk_size, RTMPPacket **prev_pkt, int *nb_prev_pkt)
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{
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uint8_t hdr;
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if (ffurl_read(h, &hdr, 1) != 1)
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return AVERROR(EIO);
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return ff_rtmp_packet_read_internal(h, p, chunk_size, prev_pkt,
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nb_prev_pkt, hdr);
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}
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static int rtmp_packet_read_one_chunk(URLContext *h, RTMPPacket *p,
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int chunk_size, RTMPPacket **prev_pkt_ptr,
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int *nb_prev_pkt, uint8_t hdr)
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{
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uint8_t buf[16];
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int channel_id, timestamp, size;
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uint32_t extra = 0;
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enum RTMPPacketType type;
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int written = 0;
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int ret, toread;
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RTMPPacket *prev_pkt;
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written++;
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channel_id = hdr & 0x3F;
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if (channel_id < 2) { //special case for channel number >= 64
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buf[1] = 0;
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if (ffurl_read_complete(h, buf, channel_id + 1) != channel_id + 1)
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return AVERROR(EIO);
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written += channel_id + 1;
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channel_id = AV_RL16(buf) + 64;
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}
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if ((ret = ff_rtmp_check_alloc_array(prev_pkt_ptr, nb_prev_pkt,
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channel_id)) < 0)
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return ret;
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prev_pkt = *prev_pkt_ptr;
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size = prev_pkt[channel_id].size;
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type = prev_pkt[channel_id].type;
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extra = prev_pkt[channel_id].extra;
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hdr >>= 6;
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if (hdr == RTMP_PS_ONEBYTE) {
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timestamp = prev_pkt[channel_id].ts_delta;
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} else {
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if (ffurl_read_complete(h, buf, 3) != 3)
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return AVERROR(EIO);
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written += 3;
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timestamp = AV_RB24(buf);
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if (hdr != RTMP_PS_FOURBYTES) {
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if (ffurl_read_complete(h, buf, 3) != 3)
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return AVERROR(EIO);
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written += 3;
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size = AV_RB24(buf);
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if (ffurl_read_complete(h, buf, 1) != 1)
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return AVERROR(EIO);
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written++;
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type = buf[0];
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if (hdr == RTMP_PS_TWELVEBYTES) {
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if (ffurl_read_complete(h, buf, 4) != 4)
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return AVERROR(EIO);
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written += 4;
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extra = AV_RL32(buf);
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}
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}
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if (timestamp == 0xFFFFFF) {
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if (ffurl_read_complete(h, buf, 4) != 4)
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return AVERROR(EIO);
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timestamp = AV_RB32(buf);
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}
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}
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if (hdr != RTMP_PS_TWELVEBYTES)
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timestamp += prev_pkt[channel_id].timestamp;
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if (!prev_pkt[channel_id].read) {
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if ((ret = ff_rtmp_packet_create(p, channel_id, type, timestamp,
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size)) < 0)
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return ret;
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p->read = written;
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p->offset = 0;
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prev_pkt[channel_id].ts_delta = timestamp -
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prev_pkt[channel_id].timestamp;
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prev_pkt[channel_id].timestamp = timestamp;
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} else {
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// previous packet in this channel hasn't completed reading
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RTMPPacket *prev = &prev_pkt[channel_id];
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p->data = prev->data;
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p->size = prev->size;
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p->channel_id = prev->channel_id;
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p->type = prev->type;
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p->ts_delta = prev->ts_delta;
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p->extra = prev->extra;
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p->offset = prev->offset;
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p->read = prev->read + written;
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p->timestamp = prev->timestamp;
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prev->data = NULL;
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}
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p->extra = extra;
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// save history
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prev_pkt[channel_id].channel_id = channel_id;
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prev_pkt[channel_id].type = type;
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prev_pkt[channel_id].size = size;
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prev_pkt[channel_id].extra = extra;
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size = size - p->offset;
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toread = FFMIN(size, chunk_size);
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if (ffurl_read_complete(h, p->data + p->offset, toread) != toread) {
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ff_rtmp_packet_destroy(p);
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return AVERROR(EIO);
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}
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size -= toread;
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p->read += toread;
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p->offset += toread;
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if (size > 0) {
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RTMPPacket *prev = &prev_pkt[channel_id];
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prev->data = p->data;
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prev->read = p->read;
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prev->offset = p->offset;
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return AVERROR(EAGAIN);
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}
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prev_pkt[channel_id].read = 0; // read complete; reset if needed
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return p->read;
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}
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int ff_rtmp_packet_read_internal(URLContext *h, RTMPPacket *p, int chunk_size,
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RTMPPacket **prev_pkt, int *nb_prev_pkt,
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uint8_t hdr)
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{
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while (1) {
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int ret = rtmp_packet_read_one_chunk(h, p, chunk_size, prev_pkt,
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nb_prev_pkt, hdr);
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if (ret > 0 || ret != AVERROR(EAGAIN))
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return ret;
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if (ffurl_read(h, &hdr, 1) != 1)
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return AVERROR(EIO);
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}
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}
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int ff_rtmp_packet_write(URLContext *h, RTMPPacket *pkt,
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int chunk_size, RTMPPacket **prev_pkt_ptr,
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int *nb_prev_pkt)
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{
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uint8_t pkt_hdr[16], *p = pkt_hdr;
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int mode = RTMP_PS_TWELVEBYTES;
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int off = 0;
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int written = 0;
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int ret;
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RTMPPacket *prev_pkt;
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if ((ret = ff_rtmp_check_alloc_array(prev_pkt_ptr, nb_prev_pkt,
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pkt->channel_id)) < 0)
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return ret;
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prev_pkt = *prev_pkt_ptr;
|
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|
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pkt->ts_delta = pkt->timestamp - prev_pkt[pkt->channel_id].timestamp;
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||||
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//if channel_id = 0, this is first presentation of prev_pkt, send full hdr.
|
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if (prev_pkt[pkt->channel_id].channel_id &&
|
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pkt->extra == prev_pkt[pkt->channel_id].extra) {
|
||||
if (pkt->type == prev_pkt[pkt->channel_id].type &&
|
||||
pkt->size == prev_pkt[pkt->channel_id].size) {
|
||||
mode = RTMP_PS_FOURBYTES;
|
||||
if (pkt->ts_delta == prev_pkt[pkt->channel_id].ts_delta)
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mode = RTMP_PS_ONEBYTE;
|
||||
} else {
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||||
mode = RTMP_PS_EIGHTBYTES;
|
||||
}
|
||||
}
|
||||
|
||||
if (pkt->channel_id < 64) {
|
||||
bytestream_put_byte(&p, pkt->channel_id | (mode << 6));
|
||||
} else if (pkt->channel_id < 64 + 256) {
|
||||
bytestream_put_byte(&p, 0 | (mode << 6));
|
||||
bytestream_put_byte(&p, pkt->channel_id - 64);
|
||||
} else {
|
||||
bytestream_put_byte(&p, 1 | (mode << 6));
|
||||
bytestream_put_le16(&p, pkt->channel_id - 64);
|
||||
}
|
||||
if (mode != RTMP_PS_ONEBYTE) {
|
||||
uint32_t timestamp = pkt->timestamp;
|
||||
if (mode != RTMP_PS_TWELVEBYTES)
|
||||
timestamp = pkt->ts_delta;
|
||||
bytestream_put_be24(&p, timestamp >= 0xFFFFFF ? 0xFFFFFF : timestamp);
|
||||
if (mode != RTMP_PS_FOURBYTES) {
|
||||
bytestream_put_be24(&p, pkt->size);
|
||||
bytestream_put_byte(&p, pkt->type);
|
||||
if (mode == RTMP_PS_TWELVEBYTES)
|
||||
bytestream_put_le32(&p, pkt->extra);
|
||||
}
|
||||
if (timestamp >= 0xFFFFFF)
|
||||
bytestream_put_be32(&p, timestamp);
|
||||
}
|
||||
// save history
|
||||
prev_pkt[pkt->channel_id].channel_id = pkt->channel_id;
|
||||
prev_pkt[pkt->channel_id].type = pkt->type;
|
||||
prev_pkt[pkt->channel_id].size = pkt->size;
|
||||
prev_pkt[pkt->channel_id].timestamp = pkt->timestamp;
|
||||
if (mode != RTMP_PS_TWELVEBYTES) {
|
||||
prev_pkt[pkt->channel_id].ts_delta = pkt->ts_delta;
|
||||
} else {
|
||||
prev_pkt[pkt->channel_id].ts_delta = pkt->timestamp;
|
||||
}
|
||||
prev_pkt[pkt->channel_id].extra = pkt->extra;
|
||||
|
||||
if ((ret = ffurl_write(h, pkt_hdr, p - pkt_hdr)) < 0)
|
||||
return ret;
|
||||
written = p - pkt_hdr + pkt->size;
|
||||
while (off < pkt->size) {
|
||||
int towrite = FFMIN(chunk_size, pkt->size - off);
|
||||
if ((ret = ffurl_write(h, pkt->data + off, towrite)) < 0)
|
||||
return ret;
|
||||
off += towrite;
|
||||
if (off < pkt->size) {
|
||||
uint8_t marker = 0xC0 | pkt->channel_id;
|
||||
if ((ret = ffurl_write(h, &marker, 1)) < 0)
|
||||
return ret;
|
||||
written++;
|
||||
}
|
||||
}
|
||||
return written;
|
||||
}
|
||||
|
||||
int ff_rtmp_packet_create(RTMPPacket *pkt, int channel_id, RTMPPacketType type,
|
||||
int timestamp, int size)
|
||||
{
|
||||
if (size) {
|
||||
pkt->data = av_malloc(size);
|
||||
if (!pkt->data)
|
||||
return AVERROR(ENOMEM);
|
||||
}
|
||||
pkt->size = size;
|
||||
pkt->channel_id = channel_id;
|
||||
pkt->type = type;
|
||||
pkt->timestamp = timestamp;
|
||||
pkt->extra = 0;
|
||||
pkt->ts_delta = 0;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void ff_rtmp_packet_destroy(RTMPPacket *pkt)
|
||||
{
|
||||
if (!pkt)
|
||||
return;
|
||||
av_freep(&pkt->data);
|
||||
pkt->size = 0;
|
||||
}
|
||||
|
||||
int ff_amf_tag_size(const uint8_t *data, const uint8_t *data_end)
|
||||
{
|
||||
const uint8_t *base = data;
|
||||
AMFDataType type;
|
||||
unsigned nb = -1;
|
||||
int parse_key = 1;
|
||||
|
||||
if (data >= data_end)
|
||||
return -1;
|
||||
switch ((type = *data++)) {
|
||||
case AMF_DATA_TYPE_NUMBER: return 9;
|
||||
case AMF_DATA_TYPE_BOOL: return 2;
|
||||
case AMF_DATA_TYPE_STRING: return 3 + AV_RB16(data);
|
||||
case AMF_DATA_TYPE_LONG_STRING: return 5 + AV_RB32(data);
|
||||
case AMF_DATA_TYPE_NULL: return 1;
|
||||
case AMF_DATA_TYPE_ARRAY:
|
||||
parse_key = 0;
|
||||
case AMF_DATA_TYPE_MIXEDARRAY:
|
||||
nb = bytestream_get_be32(&data);
|
||||
case AMF_DATA_TYPE_OBJECT:
|
||||
while (nb-- > 0 || type != AMF_DATA_TYPE_ARRAY) {
|
||||
int t;
|
||||
if (parse_key) {
|
||||
int size = bytestream_get_be16(&data);
|
||||
if (!size) {
|
||||
data++;
|
||||
break;
|
||||
}
|
||||
if (size < 0 || size >= data_end - data)
|
||||
return -1;
|
||||
data += size;
|
||||
}
|
||||
t = ff_amf_tag_size(data, data_end);
|
||||
if (t < 0 || t >= data_end - data)
|
||||
return -1;
|
||||
data += t;
|
||||
}
|
||||
return data - base;
|
||||
case AMF_DATA_TYPE_OBJECT_END: return 1;
|
||||
default: return -1;
|
||||
}
|
||||
}
|
||||
|
||||
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(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 (size < 0 || size >= data_end - data)
|
||||
return -1;
|
||||
data += size;
|
||||
if (size == namelen && !memcmp(data-size, name, namelen)) {
|
||||
switch (*data++) {
|
||||
case AMF_DATA_TYPE_NUMBER:
|
||||
snprintf(dst, dst_size, "%g", av_int2double(AV_RB64(data)));
|
||||
break;
|
||||
case AMF_DATA_TYPE_BOOL:
|
||||
snprintf(dst, dst_size, "%s", *data ? "true" : "false");
|
||||
break;
|
||||
case AMF_DATA_TYPE_STRING:
|
||||
len = bytestream_get_be16(&data);
|
||||
av_strlcpy(dst, data, FFMIN(len+1, dst_size));
|
||||
break;
|
||||
default:
|
||||
return -1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
len = ff_amf_tag_size(data, data_end);
|
||||
if (len < 0 || len >= data_end - data)
|
||||
return -1;
|
||||
data += len;
|
||||
}
|
||||
return -1;
|
||||
}
|
||||
|
||||
static const char* rtmp_packet_type(int type)
|
||||
{
|
||||
switch (type) {
|
||||
case RTMP_PT_CHUNK_SIZE: return "chunk size";
|
||||
case RTMP_PT_BYTES_READ: return "bytes read";
|
||||
case RTMP_PT_PING: return "ping";
|
||||
case RTMP_PT_SERVER_BW: return "server bandwidth";
|
||||
case RTMP_PT_CLIENT_BW: return "client bandwidth";
|
||||
case RTMP_PT_AUDIO: return "audio packet";
|
||||
case RTMP_PT_VIDEO: return "video packet";
|
||||
case RTMP_PT_FLEX_STREAM: return "Flex shared stream";
|
||||
case RTMP_PT_FLEX_OBJECT: return "Flex shared object";
|
||||
case RTMP_PT_FLEX_MESSAGE: return "Flex shared message";
|
||||
case RTMP_PT_NOTIFY: return "notification";
|
||||
case RTMP_PT_SHARED_OBJ: return "shared object";
|
||||
case RTMP_PT_INVOKE: return "invoke";
|
||||
case RTMP_PT_METADATA: return "metadata";
|
||||
default: return "unknown";
|
||||
}
|
||||
}
|
||||
|
||||
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;
|
||||
}
|
||||
}
|
||||
|
||||
void ff_rtmp_packet_dump(void *ctx, RTMPPacket *p)
|
||||
{
|
||||
av_log(ctx, AV_LOG_DEBUG, "RTMP packet type '%s'(%d) for channel %d, timestamp %d, extra field %d size %d\n",
|
||||
rtmp_packet_type(p->type), p->type, p->channel_id, p->timestamp, p->extra, p->size);
|
||||
if (p->type == RTMP_PT_INVOKE || p->type == RTMP_PT_NOTIFY) {
|
||||
uint8_t *src = p->data, *src_end = p->data + p->size;
|
||||
while (src < src_end) {
|
||||
int sz;
|
||||
amf_tag_contents(ctx, src, src_end);
|
||||
sz = ff_amf_tag_size(src, src_end);
|
||||
if (sz < 0)
|
||||
break;
|
||||
src += sz;
|
||||
}
|
||||
} else if (p->type == RTMP_PT_SERVER_BW){
|
||||
av_log(ctx, AV_LOG_DEBUG, "Server BW = %d\n", AV_RB32(p->data));
|
||||
} else if (p->type == RTMP_PT_CLIENT_BW){
|
||||
av_log(ctx, AV_LOG_DEBUG, "Client BW = %d\n", AV_RB32(p->data));
|
||||
} else if (p->type != RTMP_PT_AUDIO && p->type != RTMP_PT_VIDEO && p->type != RTMP_PT_METADATA) {
|
||||
int i;
|
||||
for (i = 0; i < p->size; i++)
|
||||
av_log(ctx, AV_LOG_DEBUG, " %02X", p->data[i]);
|
||||
av_log(ctx, AV_LOG_DEBUG, "\n");
|
||||
}
|
||||
}
|
||||
|
||||
int ff_amf_match_string(const uint8_t *data, int size, const char *str)
|
||||
{
|
||||
int len = strlen(str);
|
||||
int amf_len, type;
|
||||
|
||||
if (size < 1)
|
||||
return 0;
|
||||
|
||||
type = *data++;
|
||||
|
||||
if (type != AMF_DATA_TYPE_LONG_STRING &&
|
||||
type != AMF_DATA_TYPE_STRING)
|
||||
return 0;
|
||||
|
||||
if (type == AMF_DATA_TYPE_LONG_STRING) {
|
||||
if ((size -= 4 + 1) < 0)
|
||||
return 0;
|
||||
amf_len = bytestream_get_be32(&data);
|
||||
} else {
|
||||
if ((size -= 2 + 1) < 0)
|
||||
return 0;
|
||||
amf_len = bytestream_get_be16(&data);
|
||||
}
|
||||
|
||||
if (amf_len > size)
|
||||
return 0;
|
||||
|
||||
if (amf_len != len)
|
||||
return 0;
|
||||
|
||||
return !memcmp(data, str, len);
|
||||
}
|
||||
Reference in New Issue
Block a user