diff options
author | wm4 <wm4@nowhere> | 2012-11-05 17:02:04 +0100 |
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committer | wm4 <wm4@nowhere> | 2012-11-12 20:06:14 +0100 |
commit | d4bdd0473d6f43132257c9fb3848d829755167a3 (patch) | |
tree | 8021c2f7da1841393c8c832105e20cd527826d6c /demux/asfheader.c | |
parent | bd48deba77bd5582c5829d6fe73a7d2571088aba (diff) | |
download | mpv-d4bdd0473d6f43132257c9fb3848d829755167a3.tar.bz2 mpv-d4bdd0473d6f43132257c9fb3848d829755167a3.tar.xz |
Rename directories, move files (step 1 of 2) (does not compile)
Tis drops the silly lib prefixes, and attempts to organize the tree in
a more logical way. Make the top-level directory less cluttered as
well.
Renames the following directories:
libaf -> audio/filter
libao2 -> audio/out
libvo -> video/out
libmpdemux -> demux
Split libmpcodecs:
vf* -> video/filter
vd*, dec_video.* -> video/decode
mp_image*, img_format*, ... -> video/
ad*, dec_audio.* -> audio/decode
libaf/format.* is moved to audio/ - this is similar to how mp_image.*
is located in video/.
Move most top-level .c/.h files to core. (talloc.c/.h is left on top-
level, because it's external.) Park some of the more annoying files
in compat/. Some of these are relicts from the time mplayer used
ffmpeg internals.
sub/ is not split, because it's too much of a mess (subtitle code is
mixed with OSD display and rendering).
Maybe the organization of core is not ideal: it mixes playback core
(like mplayer.c) and utility helpers (like bstr.c/h). Should the need
arise, the playback core will be moved somewhere else, while core
contains all helper and common code.
Diffstat (limited to 'demux/asfheader.c')
-rw-r--r-- | demux/asfheader.c | 717 |
1 files changed, 717 insertions, 0 deletions
diff --git a/demux/asfheader.c b/demux/asfheader.c new file mode 100644 index 0000000000..bd775b7660 --- /dev/null +++ b/demux/asfheader.c @@ -0,0 +1,717 @@ +/* + * This file is part of MPlayer. + * + * MPlayer is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * MPlayer 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with MPlayer; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +// .asf fileformat docs from http://divx.euro.ru + +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> + +#include <libavutil/intreadwrite.h> +#include <libavutil/common.h> + +#include "config.h" +#include "mp_msg.h" + +#include "stream/stream.h" +#include "aviprint.h" +#include "demuxer.h" +#include "stheader.h" + +#include "asf.h" +#include "asfguid.h" +#include "asfheader.h" + +typedef struct { + // must be 0 for metadata record, might be non-zero for metadata lib record + uint16_t lang_list_index; + uint16_t stream_num; + uint16_t name_length; + uint16_t data_type; + uint32_t data_length; + uint16_t* name; + void* data; +} ASF_meta_record_t; + +static char* get_ucs2str(const uint16_t* inbuf, uint16_t inlen) +{ + char* outbuf = calloc(inlen, 2); + char* q; + int i; + + if (!outbuf) { + mp_tmsg(MSGT_HEADER, MSGL_ERR, "Memory allocation failed.\n"); + return NULL; + } + q = outbuf; + for (i = 0; i < inlen / 2; i++) { + uint8_t tmp; + PUT_UTF8(AV_RL16(&inbuf[i]), tmp, *q++ = tmp;) + } + return outbuf; +} + +static const char* asf_chunk_type(unsigned char* guid) { + static char tmp[60]; + char *p; + int i; + + switch(ASF_LOAD_GUID_PREFIX(guid)){ + case ASF_GUID_PREFIX_audio_stream: + return "guid_audio_stream"; + case ASF_GUID_PREFIX_ext_audio_stream: + return "guid_ext_audio_stream"; + case ASF_GUID_PREFIX_ext_stream_embed_stream_header: + return "guid_ext_stream_embed_stream_header"; + case ASF_GUID_PREFIX_video_stream: + return "guid_video_stream"; + case ASF_GUID_PREFIX_audio_conceal_none: + return "guid_audio_conceal_none"; + case ASF_GUID_PREFIX_audio_conceal_interleave: + return "guid_audio_conceal_interleave"; + case ASF_GUID_PREFIX_header: + return "guid_header"; + case ASF_GUID_PREFIX_data_chunk: + return "guid_data_chunk"; + case ASF_GUID_PREFIX_index_chunk: + return "guid_index_chunk"; + case ASF_GUID_PREFIX_stream_header: + return "guid_stream_header"; + case ASF_GUID_PREFIX_header_2_0: + return "guid_header_2_0"; + case ASF_GUID_PREFIX_file_header: + return "guid_file_header"; + case ASF_GUID_PREFIX_content_desc: + return "guid_content_desc"; + case ASF_GUID_PREFIX_dvr_ms_timing_rep_data: + return "guid_dvr_ms_timing_rep_data"; + case ASF_GUID_PREFIX_dvr_ms_vid_frame_rep_data: + return "guid_dvr_ms_vid_frame_rep_data"; + default: + strcpy(tmp, "unknown guid "); + p = tmp + strlen(tmp); + for (i = 0; i < 16; i++) { + if ((1 << i) & ((1<<4) | (1<<6) | (1<<8))) *p++ = '-'; + sprintf(p, "%02x", guid[i]); + p += 2; + } + return tmp; + } +} + +int asf_check_header(demuxer_t *demuxer){ + unsigned char asfhdrguid[16]={0x30,0x26,0xB2,0x75,0x8E,0x66,0xCF,0x11,0xA6,0xD9,0x00,0xAA,0x00,0x62,0xCE,0x6C}; + struct asf_priv* asf = calloc(1,sizeof(*asf)); + asf->scrambling_h=asf->scrambling_w=asf->scrambling_b=1; + stream_read(demuxer->stream,(char*) &asf->header,sizeof(asf->header)); // header obj + le2me_ASF_header_t(&asf->header); // swap to machine endian +// for(i=0;i<16;i++) printf(" %02X",temp[i]);printf("\n"); +// for(i=0;i<16;i++) printf(" %02X",asfhdrguid[i]);printf("\n"); + if(memcmp(asfhdrguid,asf->header.objh.guid,16)){ + mp_msg(MSGT_HEADER,MSGL_V,"ASF_check: not ASF guid!\n"); + free(asf); + return 0; // not ASF guid + } + if(asf->header.cno>256){ + mp_msg(MSGT_HEADER,MSGL_V,"ASF_check: invalid subchunks_no %d\n",(int) asf->header.cno); + free(asf); + return 0; // invalid header??? + } + demuxer->priv = asf; + return DEMUXER_TYPE_ASF; +} + +static int get_ext_stream_properties(char *buf, int buf_len, int stream_num, struct asf_priv* asf, int is_video) +{ + int pos=0; + uint8_t *buffer = &buf[0]; + uint64_t avg_ft av_unused; + unsigned bitrate; + + while ((pos = find_asf_guid(buf, asf_ext_stream_header, pos, buf_len)) >= 0) { + int this_stream_num, stnamect, payct, i; + int buf_max_index=pos+50; + if (buf_max_index > buf_len) return 0; + buffer = &buf[pos]; + + // the following info is available + // some of it may be useful but we're skipping it for now + // starttime(8 bytes), endtime(8), + // leak-datarate(4), bucket-datasize(4), init-bucket-fullness(4), + // alt-leak-datarate(4), alt-bucket-datasize(4), alt-init-bucket-fullness(4), + // max-object-size(4), + // flags(4) (reliable,seekable,no_cleanpoints?,resend-live-cleanpoints, rest of bits reserved) + + buffer += 8+8; + bitrate = AV_RL32(buffer); + buffer += 8*4; + this_stream_num=AV_RL16(buffer);buffer+=2; + + if (this_stream_num == stream_num) { + buf_max_index+=14; + if (buf_max_index > buf_len) return 0; + buffer+=2; //skip stream-language-id-index + avg_ft = AV_RL64(buffer); // provided in 100ns units + buffer+=8; + asf->bps = bitrate / 8; + + // after this are values for stream-name-count and + // payload-extension-system-count + // followed by associated info for each + stnamect = AV_RL16(buffer);buffer+=2; + payct = AV_RL16(buffer);buffer+=2; + + // need to read stream names if present in order + // to get lengths - values are ignored for now + for (i=0; i<stnamect; i++) { + int stream_name_len; + buf_max_index+=4; + if (buf_max_index > buf_len) return 0; + buffer+=2; //language_id_index + stream_name_len = AV_RL16(buffer);buffer+=2; + buffer+=stream_name_len; //stream_name + buf_max_index+=stream_name_len; + if (buf_max_index > buf_len) return 0; + } + + if (is_video) { + asf->vid_repdata_count = payct; + asf->vid_repdata_sizes = malloc(payct*sizeof(int)); + } else { + asf->aud_repdata_count = payct; + asf->aud_repdata_sizes = malloc(payct*sizeof(int)); + } + + for (i=0; i<payct; i++) { + int payload_len; + buf_max_index+=22; + if (buf_max_index > buf_len) return 0; + // Each payload extension definition starts with a GUID. + // In dvr-ms files one of these indicates the presence an + // extension that contains pts values and this is always present + // in the video and audio streams. + // Another GUID indicates the presence of an extension + // that contains useful video frame demuxing information. + // Note that the extension data in each packet does not contain + // these GUIDs and that this header section defines the order the data + // will appear in. + if (memcmp(buffer, asf_dvr_ms_timing_rep_data, 16) == 0) { + if (is_video) + asf->vid_ext_timing_index = i; + else + asf->aud_ext_timing_index = i; + } else if (is_video && memcmp(buffer, asf_dvr_ms_vid_frame_rep_data, 16) == 0) + asf->vid_ext_frame_index = i; + buffer+=16; + + payload_len = AV_RL16(buffer);buffer+=2; + + if (is_video) + asf->vid_repdata_sizes[i] = payload_len; + else + asf->aud_repdata_sizes[i] = payload_len; + buffer+=4;//sys_len + } + + return 1; + } + } + return 1; +} + +#define CHECKDEC(l, n) if (((l) -= (n)) < 0) return 0 +static char* read_meta_record(ASF_meta_record_t* dest, char* buf, + int* buf_len) +{ + CHECKDEC(*buf_len, 2 + 2 + 2 + 2 + 4); + dest->lang_list_index = AV_RL16(buf); + dest->stream_num = AV_RL16(&buf[2]); + dest->name_length = AV_RL16(&buf[4]); + dest->data_type = AV_RL16(&buf[6]); + dest->data_length = AV_RL32(&buf[8]); + buf += 2 + 2 + 2 + 2 + 4; + CHECKDEC(*buf_len, dest->name_length); + dest->name = (uint16_t*)buf; + buf += dest->name_length; + CHECKDEC(*buf_len, dest->data_length); + dest->data = buf; + buf += dest->data_length; + return buf; +} + +static int get_meta(char *buf, int buf_len, int this_stream_num, + float* asp_ratio) +{ + int pos = 0; + uint16_t records_count; + uint16_t x = 0, y = 0; + + if ((pos = find_asf_guid(buf, asf_metadata_header, pos, buf_len)) < 0) + return 0; + + CHECKDEC(buf_len, pos); + buf += pos; + CHECKDEC(buf_len, 2); + records_count = AV_RL16(buf); + buf += 2; + + while (records_count--) { + ASF_meta_record_t record_entry; + char* name; + + if (!(buf = read_meta_record(&record_entry, buf, &buf_len))) + return 0; + /* reserved, must be zero */ + if (record_entry.lang_list_index) + continue; + /* match stream number: 0 to match all */ + if (record_entry.stream_num && record_entry.stream_num != this_stream_num) + continue; + if (!(name = get_ucs2str(record_entry.name, record_entry.name_length))) { + mp_tmsg(MSGT_HEADER, MSGL_ERR, "Memory allocation failed.\n"); + continue; + } + if (strcmp(name, "AspectRatioX") == 0) + x = AV_RL16(record_entry.data); + else if (strcmp(name, "AspectRatioY") == 0) + y = AV_RL16(record_entry.data); + free(name); + } + if (x && y) { + *asp_ratio = (float)x / (float)y; + return 1; + } + return 0; +} + +static int is_drm(char* buf, int buf_len) +{ + uint32_t data_len, type_len, key_len, url_len; + int pos = find_asf_guid(buf, asf_content_encryption, 0, buf_len); + + if (pos < 0) + return 0; + + CHECKDEC(buf_len, pos + 4); + buf += pos; + data_len = AV_RL32(buf); + buf += 4; + CHECKDEC(buf_len, data_len); + buf += data_len; + type_len = AV_RL32(buf); + if (type_len < 4) + return 0; + CHECKDEC(buf_len, 4 + type_len + 4); + buf += 4; + + if (buf[0] != 'D' || buf[1] != 'R' || buf[2] != 'M' || buf[3] != '\0') + return 0; + + buf += type_len; + key_len = AV_RL32(buf); + CHECKDEC(buf_len, key_len + 4); + buf += 4; + + buf[key_len - 1] = '\0'; + mp_msg(MSGT_HEADER, MSGL_V, "DRM Key ID: %s\n", buf); + + buf += key_len; + url_len = AV_RL32(buf); + CHECKDEC(buf_len, url_len); + buf += 4; + + buf[url_len - 1] = '\0'; + mp_tmsg(MSGT_HEADER, MSGL_INFO, "DRM License URL: %s\n", buf); + return 1; +} + +static int asf_init_audio_stream(demuxer_t *demuxer,struct asf_priv* asf, sh_audio_t* sh_audio, ASF_stream_header_t *streamh, int *ppos, uint8_t** buf, char *hdr, unsigned int hdr_len) +{ + uint8_t *buffer = *buf; + int pos = *ppos; + + sh_audio->wf=calloc(FFMAX(streamh->type_size, sizeof(*sh_audio->wf)), 1); + memcpy(sh_audio->wf,buffer,streamh->type_size); + le2me_WAVEFORMATEX(sh_audio->wf); + sh_audio->format=sh_audio->wf->wFormatTag; + if( mp_msg_test(MSGT_HEADER,MSGL_V) ) print_wave_header(sh_audio->wf,MSGL_V); + if(ASF_LOAD_GUID_PREFIX(streamh->concealment)==ASF_GUID_PREFIX_audio_conceal_interleave){ + buffer = &hdr[pos]; + pos += streamh->stream_size; + if (pos > hdr_len) return 0; + asf->scrambling_h=buffer[0]; + asf->scrambling_w=(buffer[2]<<8)|buffer[1]; + asf->scrambling_b=(buffer[4]<<8)|buffer[3]; + if(asf->scrambling_b>0){ + asf->scrambling_w/=asf->scrambling_b; + } + } else { + asf->scrambling_b=asf->scrambling_h=asf->scrambling_w=1; + } + mp_msg(MSGT_HEADER,MSGL_V,"ASF: audio scrambling: %d x %d x %d\n",asf->scrambling_h,asf->scrambling_w,asf->scrambling_b); + return 1; +} + +static int find_backwards_asf_guid(char *buf, const char *guid, int cur_pos) +{ + int i; + for (i=cur_pos-16; i>0; i--) { + if (memcmp(&buf[i], guid, 16) == 0) + return i + 16 + 8; // point after guid + length + } + return -1; +} + +int read_asf_header(demuxer_t *demuxer,struct asf_priv* asf){ + int hdr_len = asf->header.objh.size - sizeof(asf->header); + int hdr_skip = 0; + char *hdr = NULL; + char guid_buffer[16]; + int pos, start = stream_tell(demuxer->stream); + uint32_t* streams = NULL; + int audio_streams=0; + int video_streams=0; + uint16_t stream_count=0; + int best_video = -1; + int best_audio = -1; + uint64_t data_len; + ASF_stream_header_t *streamh; + uint8_t *buffer; + int audio_pos=0; + + if(hdr_len < 0) { + mp_msg(MSGT_HEADER, MSGL_FATAL, "Header size is too small.\n"); + return 0; + } + + if (hdr_len > 1024 * 1024) { + mp_tmsg(MSGT_HEADER, MSGL_ERR, "FATAL: header size bigger than 1 MB (%d)!\nPlease contact MPlayer authors, and upload/send this file.\n", + hdr_len); + hdr_skip = hdr_len - 1024 * 1024; + hdr_len = 1024 * 1024; + } + hdr = malloc(hdr_len); + if (!hdr) { + mp_tmsg(MSGT_HEADER, MSGL_FATAL, "Could not allocate %d bytes for header.\n", + hdr_len); + return 0; + } + stream_read(demuxer->stream, hdr, hdr_len); + if (hdr_skip) + stream_skip(demuxer->stream, hdr_skip); + if (stream_eof(demuxer->stream)) { + mp_tmsg(MSGT_HEADER, MSGL_FATAL, "EOF while reading ASF header, broken/incomplete file?\n"); + goto err_out; + } + + if (is_drm(hdr, hdr_len)) + mp_tmsg(MSGT_HEADER, MSGL_FATAL, "This file has been encumbered with DRM encryption, it will not play in MPlayer!\n"); + + if ((pos = find_asf_guid(hdr, asf_ext_stream_audio, 0, hdr_len)) >= 0) + { + // Special case: found GUID for dvr-ms audio. + // Now skip back to associated stream header. + int sh_pos=0; + + sh_pos = find_backwards_asf_guid(hdr, asf_stream_header_guid, pos); + + if (sh_pos > 0) { + sh_audio_t *sh_audio; + + mp_msg(MSGT_HEADER, MSGL_V, "read_asf_header found dvr-ms audio stream header pos=%d\n", sh_pos); + // found audio stream header - following code reads header and + // initializes audio stream. + audio_pos = pos - 16 - 8; + streamh = (ASF_stream_header_t *)&hdr[sh_pos]; + le2me_ASF_stream_header_t(streamh); + audio_pos += 64; //16+16+4+4+4+16+4; + buffer = &hdr[audio_pos]; + sh_audio=new_sh_audio(demuxer,streamh->stream_no & 0x7F); + sh_audio->needs_parsing = 1; + mp_tmsg(MSGT_DEMUX, MSGL_INFO, "[%s] Audio stream found, -aid %d\n", "asfheader", streamh->stream_no & 0x7F); + ++audio_streams; + if (!asf_init_audio_stream(demuxer, asf, sh_audio, streamh, &audio_pos, &buffer, hdr, hdr_len)) + goto len_err_out; + if (!get_ext_stream_properties(hdr, hdr_len, streamh->stream_no, asf, 0)) + goto len_err_out; + } + } + // find stream headers + // only reset pos if we didnt find dvr_ms audio stream + // if we did find it then we want to avoid reading its header twice + if (audio_pos == 0) + pos = 0; + + while ((pos = find_asf_guid(hdr, asf_stream_header_guid, pos, hdr_len)) >= 0) + { + streamh = (ASF_stream_header_t *)&hdr[pos]; + pos += sizeof(ASF_stream_header_t); + if (pos > hdr_len) goto len_err_out; + le2me_ASF_stream_header_t(streamh); + mp_msg(MSGT_HEADER, MSGL_V, "stream type: %s\n", + asf_chunk_type(streamh->type)); + mp_msg(MSGT_HEADER, MSGL_V, "stream concealment: %s\n", + asf_chunk_type(streamh->concealment)); + mp_msg(MSGT_HEADER, MSGL_V, "type: %d bytes, stream: %d bytes ID: %d\n", + (int)streamh->type_size, (int)streamh->stream_size, + (int)streamh->stream_no); + mp_msg(MSGT_HEADER, MSGL_V, "unk1: %lX unk2: %X\n", + (unsigned long)streamh->unk1, (unsigned int)streamh->unk2); + mp_msg(MSGT_HEADER, MSGL_V, "FILEPOS=0x%X\n", pos + start); + // type-specific data: + buffer = &hdr[pos]; + pos += streamh->type_size; + if (pos > hdr_len) goto len_err_out; + switch(ASF_LOAD_GUID_PREFIX(streamh->type)){ + case ASF_GUID_PREFIX_audio_stream: { + sh_audio_t* sh_audio=new_sh_audio(demuxer,streamh->stream_no & 0x7F); + mp_tmsg(MSGT_DEMUX, MSGL_INFO, "[%s] Audio stream found, -aid %d\n", "asfheader", streamh->stream_no & 0x7F); + ++audio_streams; + if (!asf_init_audio_stream(demuxer, asf, sh_audio, streamh, &pos, &buffer, hdr, hdr_len)) + goto len_err_out; + //if(demuxer->audio->id==-1) demuxer->audio->id=streamh.stream_no & 0x7F; + break; + } + case ASF_GUID_PREFIX_video_stream: { + unsigned int len; + float asp_ratio; + sh_video_t* sh_video=new_sh_video(demuxer,streamh->stream_no & 0x7F); + mp_tmsg(MSGT_DEMUX, MSGL_INFO, "[%s] Video stream found, -vid %d\n", "asfheader", streamh->stream_no & 0x7F); + len=streamh->type_size-(4+4+1+2); + ++video_streams; +// sh_video->bih=malloc(chunksize); memset(sh_video->bih,0,chunksize); + sh_video->bih=calloc((len<sizeof(*sh_video->bih))?sizeof(*sh_video->bih):len,1); + memcpy(sh_video->bih,&buffer[4+4+1+2],len); + le2me_BITMAPINFOHEADER(sh_video->bih); + if (sh_video->bih->biSize > len && sh_video->bih->biSize > sizeof(*sh_video->bih)) + sh_video->bih->biSize = len; + if (sh_video->bih->biCompression == mmioFOURCC('D', 'V', 'R', ' ')) { + //mp_tmsg(MSGT_DEMUXER, MSGL_WARN, "DVR will probably only work with libavformat, try -demuxer 35 if you have problems\n"); + //sh_video->fps=(float)sh_video->video.dwRate/(float)sh_video->video.dwScale; + //sh_video->frametime=(float)sh_video->video.dwScale/(float)sh_video->video.dwRate; + asf->asf_frame_state=-1; + asf->asf_frame_start_found=0; + asf->asf_is_dvr_ms=1; + asf->dvr_last_vid_pts=0.0; + } else asf->asf_is_dvr_ms=0; + if (!get_ext_stream_properties(hdr, hdr_len, streamh->stream_no, asf, 1)) + goto len_err_out; + if (get_meta(hdr, hdr_len, streamh->stream_no, &asp_ratio)) { + sh_video->aspect = asp_ratio * sh_video->bih->biWidth / + sh_video->bih->biHeight; + } + sh_video->i_bps = asf->bps; + + if( mp_msg_test(MSGT_DEMUX,MSGL_V) ) print_video_header(sh_video->bih, MSGL_V); + //asf_video_id=streamh.stream_no & 0x7F; + //if(demuxer->video->id==-1) demuxer->video->id=streamh.stream_no & 0x7F; + break; + } + } + // stream-specific data: + // stream_read(demuxer->stream,(char*) buffer,streamh.stream_size); + } + + // find file header + pos = find_asf_guid(hdr, asf_file_header_guid, 0, hdr_len); + if (pos >= 0) { + ASF_file_header_t *fileh = (ASF_file_header_t *)&hdr[pos]; + pos += sizeof(ASF_file_header_t); + if (pos > hdr_len) goto len_err_out; + le2me_ASF_file_header_t(fileh); + mp_msg(MSGT_HEADER, MSGL_V, "ASF: packets: %d flags: %d " + "max_packet_size: %d min_packet_size: %d max_bitrate: %d " + "preroll: %d\n", + (int)fileh->num_packets, (int)fileh->flags, + (int)fileh->min_packet_size, (int)fileh->max_packet_size, + (int)fileh->max_bitrate, (int)fileh->preroll); + asf->packetsize=fileh->max_packet_size; + asf->packet=malloc(asf->packetsize); // !!! + asf->packetrate=fileh->max_bitrate/8.0/(double)asf->packetsize; + asf->movielength=FFMAX(0.0, (fileh->play_duration / 10000.0 - fileh->preroll) / 1000.0); + } + + // find content header + pos = find_asf_guid(hdr, asf_content_desc_guid, 0, hdr_len); + if (pos >= 0) { + ASF_content_description_t *contenth = (ASF_content_description_t *)&hdr[pos]; + char *string=NULL; + uint16_t* wstring = NULL; + uint16_t len; + pos += sizeof(ASF_content_description_t); + if (pos > hdr_len) goto len_err_out; + le2me_ASF_content_description_t(contenth); + mp_msg(MSGT_HEADER,MSGL_V,"\n"); + // extract the title + if((len = contenth->title_size) != 0) { + wstring = (uint16_t*)&hdr[pos]; + pos += len; + if (pos > hdr_len) goto len_err_out; + if ((string = get_ucs2str(wstring, len))) { + mp_msg(MSGT_HEADER,MSGL_V," Title: %s\n", string); + demux_info_add(demuxer, "title", string); + free(string); + } + } + // extract the author + if((len = contenth->author_size) != 0) { + wstring = (uint16_t*)&hdr[pos]; + pos += len; + if (pos > hdr_len) goto len_err_out; + if ((string = get_ucs2str(wstring, len))) { + mp_msg(MSGT_HEADER,MSGL_V," Author: %s\n", string); + demux_info_add(demuxer, "author", string); + free(string); + } + } + // extract the copyright + if((len = contenth->copyright_size) != 0) { + wstring = (uint16_t*)&hdr[pos]; + pos += len; + if (pos > hdr_len) goto len_err_out; + if ((string = get_ucs2str(wstring, len))) { + mp_msg(MSGT_HEADER,MSGL_V," Copyright: %s\n", string); + demux_info_add(demuxer, "copyright", string); + free(string); + } + } + // extract the comment + if((len = contenth->comment_size) != 0) { + wstring = (uint16_t*)&hdr[pos]; + pos += len; + if (pos > hdr_len) goto len_err_out; + if ((string = get_ucs2str(wstring, len))) { + mp_msg(MSGT_HEADER,MSGL_V," Comment: %s\n", string); + demux_info_add(demuxer, "comments", string); + free(string); + } + } + // extract the rating + if((len = contenth->rating_size) != 0) { + wstring = (uint16_t*)&hdr[pos]; + pos += len; + if (pos > hdr_len) goto len_err_out; + if ((string = get_ucs2str(wstring, len))) { + mp_msg(MSGT_HEADER,MSGL_V," Rating: %s\n", string); + free(string); + } + } + mp_msg(MSGT_HEADER,MSGL_V,"\n"); + } + + // find content header + pos = find_asf_guid(hdr, asf_stream_group_guid, 0, hdr_len); + if (pos >= 0) { + int max_streams = (hdr_len - pos - 2) / 6; + uint16_t stream_id, i; + uint32_t max_bitrate; + char *ptr = &hdr[pos]; + mp_msg(MSGT_HEADER,MSGL_V,"============ ASF Stream group == START ===\n"); + if(max_streams <= 0) goto len_err_out; + stream_count = AV_RL16(ptr); + ptr += sizeof(uint16_t); + if(stream_count > max_streams) stream_count = max_streams; + if(stream_count > 0) + streams = malloc(2*stream_count*sizeof(uint32_t)); + mp_msg(MSGT_HEADER,MSGL_V," stream count=[0x%x][%u]\n", stream_count, stream_count ); + for( i=0 ; i<stream_count ; i++ ) { + stream_id = AV_RL16(ptr); + ptr += sizeof(uint16_t); + max_bitrate = AV_RL32(ptr); + ptr += sizeof(uint32_t); + mp_msg(MSGT_HEADER,MSGL_V," stream id=[0x%x][%u]\n", stream_id, stream_id ); + mp_msg(MSGT_HEADER,MSGL_V," max bitrate=[0x%x][%u]\n", max_bitrate, max_bitrate ); + streams[2*i] = stream_id; + streams[2*i+1] = max_bitrate; + } + mp_msg(MSGT_HEADER,MSGL_V,"============ ASF Stream group == END ===\n"); + } + free(hdr); + hdr = NULL; + start = stream_tell(demuxer->stream); // start of first data chunk + stream_read(demuxer->stream, guid_buffer, 16); + if (memcmp(guid_buffer, asf_data_chunk_guid, 16) != 0) { + mp_tmsg(MSGT_HEADER, MSGL_FATAL, "No data chunk following header!\n"); + free(streams); + streams = NULL; + return 0; + } + // read length of chunk + data_len = stream_read_qword_le(demuxer->stream); + demuxer->movi_start = stream_tell(demuxer->stream) + 26; + demuxer->movi_end = start + data_len; + mp_msg(MSGT_HEADER, MSGL_V, "Found movie at 0x%X - 0x%X\n", + (int)demuxer->movi_start, (int)demuxer->movi_end); + +if(streams) { + // stream selection is done in the network code, it shouldn't be done here + // as the servers often do not care about what we requested. +#if 0 + uint32_t vr = 0, ar = 0,i; +#ifdef CONFIG_NETWORKING + if( demuxer->stream->streaming_ctrl!=NULL ) { + if( demuxer->stream->streaming_ctrl->bandwidth!=0 && demuxer->stream->streaming_ctrl->data!=NULL ) { + best_audio = ((asf_http_streaming_ctrl_t*)demuxer->stream->streaming_ctrl->data)->audio_id; + best_video = ((asf_http_streaming_ctrl_t*)demuxer->stream->streaming_ctrl->data)->video_id; + } + } else +#endif + for(i = 0; i < stream_count; i++) { + uint32_t id = streams[2*i]; + uint32_t rate = streams[2*i+1]; + if(demuxer->v_streams[id] && rate > vr) { + vr = rate; + best_video = id; + } else if(demuxer->a_streams[id] && rate > ar) { + ar = rate; + best_audio = id; + } + } +#endif + free(streams); + streams = NULL; +} + +mp_msg(MSGT_HEADER,MSGL_V,"ASF: %d audio and %d video streams found\n",audio_streams,video_streams); +if(!audio_streams) demuxer->audio->id=-2; // nosound +else if(best_audio > 0 && demuxer->audio->id == -1) demuxer->audio->id=best_audio; +if(!video_streams){ + if(!audio_streams){ + mp_tmsg(MSGT_HEADER,MSGL_ERR,"ASF: no audio or video headers found - broken file?\n"); + return 0; + } + demuxer->video->id=-2; // audio-only +} else if (best_video > 0 && demuxer->video->id == -1) demuxer->video->id = best_video; + +#if 0 +if( mp_msg_test(MSGT_HEADER,MSGL_V) ){ + printf("ASF duration: %d\n",(int)fileh.duration); + printf("ASF start pts: %d\n",(int)fileh.start_timestamp); + printf("ASF end pts: %d\n",(int)fileh.end_timestamp); +} +#endif + +return 1; + +len_err_out: + mp_tmsg(MSGT_HEADER, MSGL_FATAL, "Invalid length in ASF header!\n"); +err_out: + free(hdr); + free(streams); + return 0; +} |