diff options
| author | Sean Bartell <wingedtachikoma@gmail.com> | 2011-06-25 21:32:25 -0400 |
|---|---|---|
| committer | Nils Wallménius <nils@rockbox.org> | 2012-04-25 22:13:20 +0200 |
| commit | f40bfc9267b13b54e6379dfe7539447662879d24 (patch) | |
| tree | 9b20069d5e62809ff434061ad730096836f916f2 /apps/codecs/libasf | |
| parent | a0009907de7a0107d49040d8a180f140e2eff299 (diff) | |
| download | rockbox-f40bfc9267b13b54e6379dfe7539447662879d24.zip rockbox-f40bfc9267b13b54e6379dfe7539447662879d24.tar.gz rockbox-f40bfc9267b13b54e6379dfe7539447662879d24.tar.bz2 rockbox-f40bfc9267b13b54e6379dfe7539447662879d24.tar.xz | |
Add codecs to librbcodec.
Change-Id: Id7f4717d51ed02d67cb9f9cb3c0ada4a81843f97
Reviewed-on: http://gerrit.rockbox.org/137
Reviewed-by: Nils Wallménius <nils@rockbox.org>
Tested-by: Nils Wallménius <nils@rockbox.org>
Diffstat (limited to 'apps/codecs/libasf')
| -rw-r--r-- | apps/codecs/libasf/SOURCES | 1 | ||||
| -rw-r--r-- | apps/codecs/libasf/asf.c | 435 | ||||
| -rw-r--r-- | apps/codecs/libasf/asf.h | 49 | ||||
| -rw-r--r-- | apps/codecs/libasf/libasf.make | 18 |
4 files changed, 0 insertions, 503 deletions
diff --git a/apps/codecs/libasf/SOURCES b/apps/codecs/libasf/SOURCES deleted file mode 100644 index 1fee336..0000000 --- a/apps/codecs/libasf/SOURCES +++ /dev/null @@ -1 +0,0 @@ -asf.c diff --git a/apps/codecs/libasf/asf.c b/apps/codecs/libasf/asf.c deleted file mode 100644 index 4e3235a..0000000 --- a/apps/codecs/libasf/asf.c +++ /dev/null @@ -1,435 +0,0 @@ -/*************************************************************************** - * __________ __ ___. - * Open \______ \ ____ ____ | | _\_ |__ _______ ___ - * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / - * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < - * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ - * \/ \/ \/ \/ \/ - * $Id$ - * - * Copyright (C) 2007 Dave Chapman - * - * ASF parsing code based on libasf by Juho Vähä-Herttua - * http://code.google.com/p/libasf/ libasf itself was based on the ASF - * parser in VLC - http://www.videolan.org/ - * - * This program 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. - * - * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY - * KIND, either express or implied. - * - ****************************************************************************/ -#include <inttypes.h> -#include "codeclib.h" -#include "asf.h" - -/* Read an unaligned 32-bit little endian long from buffer. */ -static unsigned long get_long_le(void* buf) -{ - unsigned char* p = (unsigned char*) buf; - - return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24); -} - -/* Read an unaligned 16-bit little endian short from buffer. */ -static unsigned short get_short_le(void* buf) -{ - unsigned char* p = (unsigned char*) buf; - - return p[0] | (p[1] << 8); -} - -#define GETLEN2b(bits) (((bits) == 0x03) ? 4 : bits) - -#define GETVALUE2b(bits, data) \ - (((bits) != 0x03) ? ((bits) != 0x02) ? ((bits) != 0x01) ? \ - 0 : *(data) : get_short_le(data) : get_long_le(data)) - -int asf_read_packet(uint8_t** audiobuf, int* audiobufsize, int* packetlength, - asf_waveformatex_t* wfx) -{ - uint8_t tmp8, packet_flags, packet_property; - int stream_id; - int ec_length, opaque_data, ec_length_type; - int datalen; - uint8_t data[18]; - uint8_t* datap; - uint32_t length; - uint32_t padding_length; - /* rockbox: comment 'set but unused' variables - uint32_t send_time; - uint16_t duration; - uint32_t media_object_number; - uint32_t media_object_offset; - */ - uint16_t payload_count; - int payload_length_type; - uint32_t payload_hdrlen; - int payload_datalen; - int multiple; - uint32_t replicated_length; - uint32_t bytesread = 0; - uint8_t* buf; - size_t bufsize; - int i; - /*DEBUGF("Reading new packet at %d bytes ", (int)ci->curpos);*/ - - if (ci->read_filebuf(&tmp8, 1) == 0) { - return ASF_ERROR_EOF; - } - bytesread++; - - /* TODO: We need a better way to detect endofstream */ - if (tmp8 != 0x82) { - DEBUGF("Read failed: packet did not sync\n"); - return -1; - } - - - if (tmp8 & 0x80) { - ec_length = tmp8 & 0x0f; - opaque_data = (tmp8 >> 4) & 0x01; - ec_length_type = (tmp8 >> 5) & 0x03; - - if (ec_length_type != 0x00 || opaque_data != 0 || ec_length != 0x02) { - DEBUGF("incorrect error correction flags\n"); - return ASF_ERROR_INVALID_VALUE; - } - - /* Skip ec_data */ - ci->advance_buffer(ec_length); - bytesread += ec_length; - } else { - ec_length = 0; - } - - if (ci->read_filebuf(&packet_flags, 1) == 0) { return ASF_ERROR_EOF; } - if (ci->read_filebuf(&packet_property, 1) == 0) { return ASF_ERROR_EOF; } - bytesread += 2; - - datalen = GETLEN2b((packet_flags >> 1) & 0x03) + - GETLEN2b((packet_flags >> 3) & 0x03) + - GETLEN2b((packet_flags >> 5) & 0x03) + 6; - -#if 0 - if (datalen > sizeof(data)) { - DEBUGF("Unexpectedly long datalen in data - %d\n",datalen); - return ASF_ERROR_OUTOFMEM; - } -#endif - - if (ci->read_filebuf(data, datalen) == 0) { - return ASF_ERROR_EOF; - } - - bytesread += datalen; - - datap = data; - length = GETVALUE2b((packet_flags >> 5) & 0x03, datap); - datap += GETLEN2b((packet_flags >> 5) & 0x03); - /* sequence value is not used */ - GETVALUE2b((packet_flags >> 1) & 0x03, datap); - datap += GETLEN2b((packet_flags >> 1) & 0x03); - padding_length = GETVALUE2b((packet_flags >> 3) & 0x03, datap); - datap += GETLEN2b((packet_flags >> 3) & 0x03); - /* send_time = get_long_le(datap); */ - datap += 4; - /* duration = get_short_le(datap); */ - datap += 2; - /*DEBUGF("and duration %d ms\n", duration);*/ - - /* this is really idiotic, packet length can (and often will) be - * undefined and we just have to use the header packet size as the size - * value */ - if (!((packet_flags >> 5) & 0x03)) { - length = wfx->packet_size; - } - - /* this is also really idiotic, if packet length is smaller than packet - * size, we need to manually add the additional bytes into padding length - */ - if (length < wfx->packet_size) { - padding_length += wfx->packet_size - length; - length = wfx->packet_size; - } - - if (length > wfx->packet_size) { - DEBUGF("packet with too big length value\n"); - return ASF_ERROR_INVALID_LENGTH; - } - - /* check if we have multiple payloads */ - if (packet_flags & 0x01) { - if (ci->read_filebuf(&tmp8, 1) == 0) { - return ASF_ERROR_EOF; - } - payload_count = tmp8 & 0x3f; - payload_length_type = (tmp8 >> 6) & 0x03; - bytesread++; - } else { - payload_count = 1; - payload_length_type = 0x02; /* not used */ - } - - if (length < bytesread) { - DEBUGF("header exceeded packet size, invalid file - length=%d, bytesread=%d\n",(int)length,(int)bytesread); - /* FIXME: should this be checked earlier? */ - return ASF_ERROR_INVALID_LENGTH; - } - - - /* We now parse the individual payloads, and move all payloads - belonging to our audio stream to a contiguous block, starting at - the location of the first payload. - */ - - *audiobuf = NULL; - *audiobufsize = 0; - *packetlength = length - bytesread; - - buf = ci->request_buffer(&bufsize, length); - datap = buf; - -#define ASF_MAX_REQUEST (1L<<15) /* 32KB */ - if (bufsize != length && length >= ASF_MAX_REQUEST) { - /* This should only happen with packets larger than 32KB (the - guard buffer size). All the streams I've seen have - relatively small packets less than about 8KB), but I don't - know what is expected. - */ - DEBUGF("Could not read packet (requested %d bytes, received %d), curpos=%d, aborting\n", - (int)length,(int)bufsize,(int)ci->curpos); - return -1; - } - - for (i=0; i<payload_count; i++) { - stream_id = datap[0]&0x7f; - datap++; - bytesread++; - - payload_hdrlen = GETLEN2b(packet_property & 0x03) + - GETLEN2b((packet_property >> 2) & 0x03) + - GETLEN2b((packet_property >> 4) & 0x03); - - //DEBUGF("payload_hdrlen = %d\n",payload_hdrlen); -#if 0 - /* TODO */ - if (payload_hdrlen > size) { - return ASF_ERROR_INVALID_LENGTH; - } -#endif - if (payload_hdrlen > sizeof(data)) { - DEBUGF("Unexpectedly long datalen in data - %d\n",datalen); - return ASF_ERROR_OUTOFMEM; - } - - bytesread += payload_hdrlen; - /* media_object_number = GETVALUE2b((packet_property >> 4) & 0x03, datap); */ - datap += GETLEN2b((packet_property >> 4) & 0x03); - /* media_object_offset = GETVALUE2b((packet_property >> 2) & 0x03, datap); */ - datap += GETLEN2b((packet_property >> 2) & 0x03); - replicated_length = GETVALUE2b(packet_property & 0x03, datap); - datap += GETLEN2b(packet_property & 0x03); - - /* TODO: Validate replicated_length */ - /* TODO: Is the content of this important for us? */ - datap += replicated_length; - bytesread += replicated_length; - - multiple = packet_flags & 0x01; - - - if (multiple) { - int x; - - x = GETLEN2b(payload_length_type); - - if (x != 2) { - /* in multiple payloads datalen should be a word */ - return ASF_ERROR_INVALID_VALUE; - } - -#if 0 - if (skip + tmp > datalen) { - /* not enough data */ - return ASF_ERROR_INVALID_LENGTH; - } -#endif - payload_datalen = GETVALUE2b(payload_length_type, datap); - datap += x; - bytesread += x; - } else { - payload_datalen = length - bytesread - padding_length; - } - - if (replicated_length==1) - datap++; - - if (stream_id == wfx->audiostream) - { - if (*audiobuf == NULL) { - /* The first payload can stay where it is */ - *audiobuf = datap; - *audiobufsize = payload_datalen; - } else { - /* The second and subsequent payloads in this packet - that belong to the audio stream need to be moved to be - contiguous with the first payload. - */ - memmove(*audiobuf + *audiobufsize, datap, payload_datalen); - *audiobufsize += payload_datalen; - } - } - datap += payload_datalen; - bytesread += payload_datalen; - } - - if (*audiobuf != NULL) - return 1; - else - return 0; -} - - -int asf_get_timestamp(int *duration) -{ - uint8_t tmp8, packet_flags, packet_property; - int ec_length, opaque_data, ec_length_type; - int datalen; - uint8_t data[18]; - uint8_t* datap; - /* rockbox: comment 'set but unused' variables - uint32_t length; - uint32_t padding_length; - */ - uint32_t send_time; - static int packet_count = 0; - - uint32_t bytesread = 0; - packet_count++; - if (ci->read_filebuf(&tmp8, 1) == 0) { - DEBUGF("ASF ERROR (EOF?)\n"); - return ASF_ERROR_EOF; - } - bytesread++; - - /* TODO: We need a better way to detect endofstream */ - if (tmp8 != 0x82) { - DEBUGF("Get timestamp: Detected end of stream\n"); - return ASF_ERROR_EOF; - } - - - if (tmp8 & 0x80) { - ec_length = tmp8 & 0x0f; - opaque_data = (tmp8 >> 4) & 0x01; - ec_length_type = (tmp8 >> 5) & 0x03; - - if (ec_length_type != 0x00 || opaque_data != 0 || ec_length != 0x02) { - DEBUGF("incorrect error correction flags\n"); - return ASF_ERROR_INVALID_VALUE; - } - - /* Skip ec_data */ - ci->advance_buffer(ec_length); - bytesread += ec_length; - } else { - ec_length = 0; - } - - if (ci->read_filebuf(&packet_flags, 1) == 0) { - DEBUGF("Detected end of stream 2\n"); - return ASF_ERROR_EOF; - } - - if (ci->read_filebuf(&packet_property, 1) == 0) { - DEBUGF("Detected end of stream3\n"); - return ASF_ERROR_EOF; - } - bytesread += 2; - - datalen = GETLEN2b((packet_flags >> 1) & 0x03) + - GETLEN2b((packet_flags >> 3) & 0x03) + - GETLEN2b((packet_flags >> 5) & 0x03) + 6; - - if (ci->read_filebuf(data, datalen) == 0) { - DEBUGF("Detected end of stream4\n"); - return ASF_ERROR_EOF; - } - - bytesread += datalen; - - datap = data; - /* length = GETVALUE2b((packet_flags >> 5) & 0x03, datap); */ - datap += GETLEN2b((packet_flags >> 5) & 0x03); - - /* sequence value is not used */ - GETVALUE2b((packet_flags >> 1) & 0x03, datap); - datap += GETLEN2b((packet_flags >> 1) & 0x03); - /* padding_length = GETVALUE2b((packet_flags >> 3) & 0x03, datap); */ - datap += GETLEN2b((packet_flags >> 3) & 0x03); - send_time = get_long_le(datap); - datap += 4; - *duration = get_short_le(datap); - - /*the asf_get_timestamp function advances us 12-13 bytes past the packet start, - need to undo this here so that we stay synced with the packet*/ - ci->seek_buffer(ci->curpos-bytesread); - - return send_time; -} - -/*entry point for seeks*/ -int asf_seek(int ms, asf_waveformatex_t* wfx) -{ - int time, duration, delta, temp, count=0; - - /*estimate packet number from bitrate*/ - int initial_packet = ci->curpos/wfx->packet_size; - int packet_num = (((int64_t)ms)*(wfx->bitrate>>3))/wfx->packet_size/1000; - int last_packet = ci->id3->filesize / wfx->packet_size; - - if (packet_num > last_packet) { - packet_num = last_packet; - } - - /*calculate byte address of the start of that packet*/ - int packet_offset = packet_num*wfx->packet_size; - - /*seek to estimated packet*/ - ci->seek_buffer(ci->id3->first_frame_offset+packet_offset); - temp = ms; - while (1) - { - /*for very large files it can be difficult and unimportant to find the exact packet*/ - count++; - - /*check the time stamp of our packet*/ - time = asf_get_timestamp(&duration); - /*DEBUGF("seeked to %d ms with duration %d\n", time, duration);*/ - - if (time < 0) { - /*unknown error, try to recover*/ - DEBUGF("UKNOWN SEEK ERROR\n"); - ci->seek_buffer(ci->id3->first_frame_offset+initial_packet*wfx->packet_size); - /*seek failed so return time stamp of the initial packet*/ - return asf_get_timestamp(&duration); - } - - if ((time+duration>=ms && time<=ms) || count > 10) { - /*DEBUGF("Found our packet! Now at %d packet\n", packet_num);*/ - return time; - } else { - /*seek again*/ - delta = ms-time; - /*estimate new packet number from bitrate and our current position*/ - temp += delta; - packet_num = ((temp/1000)*(wfx->bitrate>>3) - (wfx->packet_size>>1))/wfx->packet_size; //round down! - packet_offset = packet_num*wfx->packet_size; - ci->seek_buffer(ci->id3->first_frame_offset+packet_offset); - } - } -} diff --git a/apps/codecs/libasf/asf.h b/apps/codecs/libasf/asf.h deleted file mode 100644 index a7d384c..0000000 --- a/apps/codecs/libasf/asf.h +++ /dev/null @@ -1,49 +0,0 @@ -#ifndef _ASF_H -#define _ASF_H - -#include <inttypes.h> - -/* ASF codec IDs */ -#define ASF_CODEC_ID_WMAV1 0x160 -#define ASF_CODEC_ID_WMAV2 0x161 -#define ASF_CODEC_ID_WMAPRO 0x162 -#define ASF_CODEC_ID_WMAVOICE 0x00A - -enum asf_error_e { - ASF_ERROR_INTERNAL = -1, /* incorrect input to API calls */ - ASF_ERROR_OUTOFMEM = -2, /* some malloc inside program failed */ - ASF_ERROR_EOF = -3, /* unexpected end of file */ - ASF_ERROR_IO = -4, /* error reading or writing to file */ - ASF_ERROR_INVALID_LENGTH = -5, /* length value conflict in input data */ - ASF_ERROR_INVALID_VALUE = -6, /* other value conflict in input data */ - ASF_ERROR_INVALID_OBJECT = -7, /* ASF object missing or in wrong place */ - ASF_ERROR_OBJECT_SIZE = -8, /* invalid ASF object size (too small) */ - ASF_ERROR_SEEKABLE = -9, /* file not seekable */ - ASF_ERROR_SEEK = -10, /* file is seekable but seeking failed */ - ASF_ERROR_ENCRYPTED = -11 /* file is encrypted */ -}; - -struct asf_waveformatex_s { - uint32_t packet_size; - int audiostream; - uint16_t codec_id; - uint16_t channels; - uint32_t rate; - uint32_t bitrate; - uint16_t blockalign; - uint16_t bitspersample; - uint16_t datalen; - uint16_t numpackets; - uint8_t data[46]; -}; -typedef struct asf_waveformatex_s asf_waveformatex_t; - -int asf_read_packet(uint8_t** audiobuf, int* audiobufsize, int* packetlength, - asf_waveformatex_t* wfx); - -int asf_get_timestamp(int *duration); - -int asf_seek(int ms, asf_waveformatex_t* wfx); - - -#endif /* _ASF_H */ diff --git a/apps/codecs/libasf/libasf.make b/apps/codecs/libasf/libasf.make deleted file mode 100644 index 143d83f..0000000 --- a/apps/codecs/libasf/libasf.make +++ /dev/null @@ -1,18 +0,0 @@ -# __________ __ ___. -# Open \______ \ ____ ____ | | _\_ |__ _______ ___ -# Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / -# Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < -# Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ -# \/ \/ \/ \/ \/ -# $Id$ -# - -# libasf -ASFLIB := $(CODECDIR)/libasf.a -ASFLIB_SRC := $(call preprocess, $(APPSDIR)/codecs/libasf/SOURCES) -ASFLIB_OBJ := $(call c2obj, $(ASFLIB_SRC)) -OTHER_SRC += $(ASFLIB_SRC) - -$(ASFLIB): $(ASFLIB_OBJ) - $(SILENT)$(shell rm -f $@) - $(call PRINTS,AR $(@F))$(AR) rcs $@ $^ >/dev/null |