diff options
Diffstat (limited to 'media/libnestegg')
| -rw-r--r-- | media/libnestegg/README_MCP | 2 | ||||
| -rw-r--r-- | media/libnestegg/include/nestegg.h | 29 | ||||
| -rw-r--r-- | media/libnestegg/src/nestegg.c | 337 |
3 files changed, 260 insertions, 108 deletions
diff --git a/media/libnestegg/README_MCP b/media/libnestegg/README_MCP index 48617ba22..e738fd920 100644 --- a/media/libnestegg/README_MCP +++ b/media/libnestegg/README_MCP @@ -5,4 +5,4 @@ Makefile.in build files for the Mozilla build system. The nestegg git repository is: https://github.com/kinetiknz/nestegg -The git commit ID used was 1eeeccee205f7aee0386898508c1a68427e0dcc2. +The git commit ID used was f7a0b7cedc893b6683cf15cb210b1656c086d964. diff --git a/media/libnestegg/include/nestegg.h b/media/libnestegg/include/nestegg.h index d91483b93..2baa50bc5 100644 --- a/media/libnestegg/include/nestegg.h +++ b/media/libnestegg/include/nestegg.h @@ -27,7 +27,7 @@ extern "C" { @code nestegg * demux_ctx; - nestegg_init(&demux_ctx, io, NULL); + nestegg_init(&demux_ctx, io, NULL, -1); nestegg_packet * pkt; while ((r = nestegg_read_packet(demux_ctx, &pkt)) > 0) { @@ -71,6 +71,7 @@ extern "C" { #define NESTEGG_CODEC_VORBIS 1 /**< Track uses Xiph Vorbis codec. */ #define NESTEGG_CODEC_VP9 2 /**< Track uses Google On2 VP9 codec. */ #define NESTEGG_CODEC_OPUS 3 /**< Track uses Xiph Opus codec. */ +#define NESTEGG_CODEC_AV1 4 /**< Track uses AOMedia AV1 codec. */ #define NESTEGG_CODEC_UNKNOWN INT_MAX /**< Track uses unknown codec. */ #define NESTEGG_VIDEO_MONO 0 /**< Track is mono video. */ @@ -92,9 +93,10 @@ extern "C" { #define NESTEGG_ENCODING_COMPRESSION 0 /**< Content encoding type is compression. */ #define NESTEGG_ENCODING_ENCRYPTION 1 /**< Content encoding type is encryption. */ -#define NESTEGG_PACKET_HAS_SIGNAL_BYTE_FALSE 0 /**< Packet does not have signal byte */ -#define NESTEGG_PACKET_HAS_SIGNAL_BYTE_UNENCRYPTED 1 /**< Packet has signal byte and is unencrypted */ -#define NESTEGG_PACKET_HAS_SIGNAL_BYTE_ENCRYPTED 2 /**< Packet has signal byte and is encrypted */ +#define NESTEGG_PACKET_HAS_SIGNAL_BYTE_FALSE 0 /**< Packet does not have signal byte */ +#define NESTEGG_PACKET_HAS_SIGNAL_BYTE_UNENCRYPTED 1 /**< Packet has signal byte and is unencrypted */ +#define NESTEGG_PACKET_HAS_SIGNAL_BYTE_ENCRYPTED 2 /**< Packet has signal byte and is encrypted */ +#define NESTEGG_PACKET_HAS_SIGNAL_BYTE_PARTITIONED 4 /**< Packet has signal byte and is partitioned */ #define NESTEGG_PACKET_HAS_KEYFRAME_FALSE 0 /**< Packet contains only keyframes. */ #define NESTEGG_PACKET_HAS_KEYFRAME_TRUE 1 /**< Packet does not contain any keyframes */ @@ -185,7 +187,7 @@ void nestegg_destroy(nestegg * context); int nestegg_duration(nestegg * context, uint64_t * duration); /** Query the tstamp scale of the media stream in nanoseconds. - @note Timecodes presented by nestegg have been scaled by this value + @note Timestamps presented by nestegg have been scaled by this value before presentation to the caller. @param context Stream context initialized by #nestegg_init. @param scale Storage for the queried scale factor. @@ -247,6 +249,7 @@ int nestegg_track_type(nestegg * context, unsigned int track); @param track Zero based track number. @retval #NESTEGG_CODEC_VP8 Track codec is VP8. @retval #NESTEGG_CODEC_VP9 Track codec is VP9. + @retval #NESTEGG_CODEC_AV1 Track codec is AV1. @retval #NESTEGG_CODEC_VORBIS Track codec is Vorbis. @retval #NESTEGG_CODEC_OPUS Track codec is Opus. @retval #NESTEGG_CODEC_UNKNOWN Track codec is unknown. @@ -363,7 +366,7 @@ int nestegg_packet_has_keyframe(nestegg_packet * packet); @retval -1 Error. */ int nestegg_packet_track(nestegg_packet * packet, unsigned int * track); -/** Query the time stamp in nanoseconds of @a packet. +/** Query the timestamp in nanoseconds of @a packet. @param packet Packet initialized by #nestegg_read_packet. @param tstamp Storage for the queried timestamp in nanoseconds. @retval 0 Success. @@ -424,6 +427,8 @@ int nestegg_packet_discard_padding(nestegg_packet * packet, set, encryption information not read from packet. @retval #NESTEGG_PACKET_HAS_SIGNAL_BYTE_ENCRYPTED Encrypted bit set, encryption infomation read from packet. + @retval #NESTEGG_PACKET_HAS_SIGNAL_BYTE_PARTITIONED Partitioned bit set, + encryption and parition information read from packet. @retval -1 Error.*/ int nestegg_packet_encryption(nestegg_packet * packet); @@ -439,6 +444,18 @@ int nestegg_packet_encryption(nestegg_packet * packet); int nestegg_packet_iv(nestegg_packet * packet, unsigned char const ** iv, size_t * length); +/** Query the packet for offsets. +@param packet Packet initialized by #nestegg_read_packet. +@param partition_offsets Storage for queried offsets. +@param num_offsets Length of returned offsets, may be 0. +The data is owned by the #nestegg_packet packet. +@retval 0 Success. +@retval -1 Error. +*/ +int nestegg_packet_offsets(nestegg_packet * packet, + uint32_t const ** partition_offsets, + uint8_t * num_offsets); + /** Returns reference_block given packet @param packet Packet initialized by #nestegg_read_packet. @param reference_block pointer to store reference block in. diff --git a/media/libnestegg/src/nestegg.c b/media/libnestegg/src/nestegg.c index 1ca34c4f0..61c30ec6b 100644 --- a/media/libnestegg/src/nestegg.c +++ b/media/libnestegg/src/nestegg.c @@ -154,6 +154,7 @@ enum ebml_type_enum { /* Track IDs */ #define TRACK_ID_VP8 "V_VP8" #define TRACK_ID_VP9 "V_VP9" +#define TRACK_ID_AV1 "V_AV1" #define TRACK_ID_VORBIS "A_VORBIS" #define TRACK_ID_OPUS "A_OPUS" @@ -164,11 +165,16 @@ enum ebml_type_enum { /* Packet Encryption */ #define SIGNAL_BYTE_SIZE 1 #define IV_SIZE 8 +#define NUM_PACKETS_SIZE 1 +#define PACKET_OFFSET_SIZE 4 /* Signal Byte */ #define PACKET_ENCRYPTED 1 #define ENCRYPTED_BIT_MASK (1 << 0) +#define PACKET_PARTITIONED 2 +#define PARTITIONED_BIT_MASK (1 << 1) + enum vint_mask { MASK_NONE, MASK_FIRST_BIT @@ -338,6 +344,8 @@ struct frame_encryption { unsigned char * iv; size_t length; uint8_t signal_byte; + uint8_t num_partitions; + uint32_t * partition_offsets; }; struct frame { @@ -1039,14 +1047,14 @@ static int ne_read_simple(nestegg * ctx, struct ebml_element_desc * desc, size_t length) { struct ebml_type * storage; - int r; + int r = -1; storage = (struct ebml_type *) (ctx->ancestor->data + desc->offset); if (storage->read) { - ctx->log(ctx, NESTEGG_LOG_DEBUG, "element %llx (%s) already read, skipping", - desc->id, desc->name); - return 0; + ctx->log(ctx, NESTEGG_LOG_DEBUG, "element %llx (%s) already read, skipping %u", + desc->id, desc->name, length); + return ne_io_read_skip(ctx->io, length); } storage->type = desc->type; @@ -1070,7 +1078,6 @@ ne_read_simple(nestegg * ctx, struct ebml_element_desc * desc, size_t length) case TYPE_MASTER: case TYPE_UNKNOWN: default: - r = 0; assert(0); break; } @@ -1359,6 +1366,52 @@ ne_find_track_entry(nestegg * ctx, unsigned int track) return NULL; } +static struct frame * +ne_alloc_frame(void) +{ + struct frame * f = ne_alloc(sizeof(*f)); + + if (!f) + return NULL; + + f->data = NULL; + f->length = 0; + f->frame_encryption = NULL; + f->next = NULL; + + return f; +} + +static struct frame_encryption * +ne_alloc_frame_encryption(void) +{ + struct frame_encryption * f = ne_alloc(sizeof(*f)); + + if (!f) + return NULL; + + f->iv = NULL; + f->length = 0; + f->signal_byte = 0; + f->num_partitions = 0; + f->partition_offsets = NULL; + + return f; +} + +static void +ne_free_frame(struct frame * f) +{ + if (f->frame_encryption) { + free(f->frame_encryption->iv); + free(f->frame_encryption->partition_offsets); + } + + free(f->frame_encryption); + free(f->data); + free(f); +} + static int ne_read_block(nestegg * ctx, uint64_t block_id, uint64_t block_size, nestegg_packet ** data) { @@ -1371,7 +1424,7 @@ ne_read_block(nestegg * ctx, uint64_t block_id, uint64_t block_size, nestegg_pac uint64_t track_number, length, frame_sizes[256], cluster_tc, flags, frames, tc_scale, total, encoding_type, encryption_algo, encryption_mode; unsigned int i, lacing, track; - uint8_t signal_byte, keyframe = NESTEGG_PACKET_HAS_KEYFRAME_UNKNOWN; + uint8_t signal_byte, keyframe = NESTEGG_PACKET_HAS_KEYFRAME_UNKNOWN, j = 0; size_t consumed = 0, data_size, encryption_size; *data = NULL; @@ -1424,6 +1477,10 @@ ne_read_block(nestegg * ctx, uint64_t block_id, uint64_t block_size, nestegg_pac return r; consumed += 1; frames += 1; + break; + default: + assert(0); + return -1; } if (frames > 256) @@ -1453,6 +1510,9 @@ ne_read_block(nestegg * ctx, uint64_t block_id, uint64_t block_size, nestegg_pac if (r != 1) return r; break; + default: + assert(0); + return -1; } /* Sanity check unlaced frame sizes against total block size. */ @@ -1490,8 +1550,11 @@ ne_read_block(nestegg * ctx, uint64_t block_id, uint64_t block_size, nestegg_pac cluster_tc = ctx->cluster_timecode; abs_timecode = timecode + cluster_tc; - if (abs_timecode < 0) - return -1; + if (abs_timecode < 0) { + /* Ignore the spec and negative timestamps */ + ctx->log(ctx, NESTEGG_LOG_WARNING, "ignoring negative timecode: %lld", abs_timecode); + abs_timecode = 0; + } pkt = ne_alloc(sizeof(*pkt)); if (!pkt) @@ -1509,7 +1572,7 @@ ne_read_block(nestegg * ctx, uint64_t block_id, uint64_t block_size, nestegg_pac nestegg_free_packet(pkt); return -1; } - f = ne_alloc(sizeof(*f)); + f = ne_alloc_frame(); if (!f) { nestegg_free_packet(pkt); return -1; @@ -1518,13 +1581,13 @@ ne_read_block(nestegg * ctx, uint64_t block_id, uint64_t block_size, nestegg_pac if (encoding_type == NESTEGG_ENCODING_ENCRYPTION) { r = ne_io_read(ctx->io, &signal_byte, SIGNAL_BYTE_SIZE); if (r != 1) { - free(f); + ne_free_frame(f); nestegg_free_packet(pkt); return r; } - f->frame_encryption = ne_alloc(sizeof(*f->frame_encryption)); + f->frame_encryption = ne_alloc_frame_encryption(); if (!f->frame_encryption) { - free(f); + ne_free_frame(f); nestegg_free_packet(pkt); return -1; } @@ -1532,49 +1595,70 @@ ne_read_block(nestegg * ctx, uint64_t block_id, uint64_t block_size, nestegg_pac if ((signal_byte & ENCRYPTED_BIT_MASK) == PACKET_ENCRYPTED) { f->frame_encryption->iv = ne_alloc(IV_SIZE); if (!f->frame_encryption->iv) { - free(f->frame_encryption); - free(f); + ne_free_frame(f); nestegg_free_packet(pkt); return -1; } r = ne_io_read(ctx->io, f->frame_encryption->iv, IV_SIZE); if (r != 1) { - free(f->frame_encryption->iv); - free(f->frame_encryption); - free(f); + ne_free_frame(f); nestegg_free_packet(pkt); return r; } f->frame_encryption->length = IV_SIZE; encryption_size = SIGNAL_BYTE_SIZE + IV_SIZE; + + if ((signal_byte & PARTITIONED_BIT_MASK) == PACKET_PARTITIONED) { + r = ne_io_read(ctx->io, &f->frame_encryption->num_partitions, NUM_PACKETS_SIZE); + if (r != 1) { + ne_free_frame(f); + nestegg_free_packet(pkt); + return r; + } + + encryption_size += NUM_PACKETS_SIZE + f->frame_encryption->num_partitions * PACKET_OFFSET_SIZE; + f->frame_encryption->partition_offsets = ne_alloc(f->frame_encryption->num_partitions * PACKET_OFFSET_SIZE); + + for (j = 0; j < f->frame_encryption->num_partitions; ++j) { + uint64_t value = 0; + r = ne_read_uint(ctx->io, &value, PACKET_OFFSET_SIZE); + if (r != 1) { + break; + } + + f->frame_encryption->partition_offsets[j] = (uint32_t) value; + } + + /* If any of the partition offsets did not return 1, then fail. */ + if (j != f->frame_encryption->num_partitions) { + ne_free_frame(f); + nestegg_free_packet(pkt); + return r; + } + } } else { - f->frame_encryption->iv = NULL; - f->frame_encryption->length = 0; encryption_size = SIGNAL_BYTE_SIZE; } } else { - f->frame_encryption = NULL; encryption_size = 0; } + if (encryption_size > frame_sizes[i]) { + ne_free_frame(f); + nestegg_free_packet(pkt); + return -1; + } data_size = frame_sizes[i] - encryption_size; /* Encryption parsed */ f->data = ne_alloc(data_size); if (!f->data) { - if (f->frame_encryption) - free(f->frame_encryption->iv); - free(f->frame_encryption); - free(f); + ne_free_frame(f); nestegg_free_packet(pkt); return -1; } f->length = data_size; r = ne_io_read(ctx->io, f->data, data_size); if (r != 1) { - if (f->frame_encryption) - free(f->frame_encryption->iv); - free(f->frame_encryption); - free(f->data); - free(f); + ne_free_frame(f); nestegg_free_packet(pkt); return r; } @@ -1610,6 +1694,7 @@ ne_read_block_additions(nestegg * ctx, uint64_t block_size, struct block_additio add_id = 1; data = NULL; has_data = 0; + data_size = 0; r = ne_read_element(ctx, &id, &size); if (r != 1) return r; @@ -1864,8 +1949,8 @@ ne_init_cue_points(nestegg * ctx, int64_t max_offset) } /* Three functions that implement the nestegg_io interface, operating on a - * sniff_buffer. */ -struct sniff_buffer { + io_buffer. */ +struct io_buffer { unsigned char const * buffer; size_t length; int64_t offset; @@ -1874,25 +1959,26 @@ struct sniff_buffer { static int ne_buffer_read(void * buffer, size_t length, void * userdata) { - struct sniff_buffer * sb = userdata; + struct io_buffer * iob = userdata; + size_t available = iob->length - iob->offset; - int rv = 1; - size_t available = sb->length - sb->offset; + if (available == 0) + return 0; if (available < length) - return 0; + return -1; - memcpy(buffer, sb->buffer + sb->offset, length); - sb->offset += length; + memcpy(buffer, iob->buffer + iob->offset, length); + iob->offset += length; - return rv; + return 1; } static int ne_buffer_seek(int64_t offset, int whence, void * userdata) { - struct sniff_buffer * sb = userdata; - int64_t o = sb->offset; + struct io_buffer * iob = userdata; + int64_t o = iob->offset; switch(whence) { case NESTEGG_SEEK_SET: @@ -1902,22 +1988,22 @@ ne_buffer_seek(int64_t offset, int whence, void * userdata) o += offset; break; case NESTEGG_SEEK_END: - o = sb->length + offset; + o = iob->length + offset; break; } - if (o < 0 || o > (int64_t) sb->length) + if (o < 0 || o > (int64_t) iob->length) return -1; - sb->offset = o; + iob->offset = o; return 0; } static int64_t ne_buffer_tell(void * userdata) { - struct sniff_buffer * sb = userdata; - return sb->offset; + struct io_buffer * iob = userdata; + return iob->offset; } static int @@ -1994,6 +2080,17 @@ ne_match_webm(nestegg_io io, int64_t max_offset) return 1; } +static void +ne_free_block_additions(struct block_additional * block_additional) +{ + while (block_additional) { + struct block_additional * tmp = block_additional; + block_additional = block_additional->next; + free(tmp->data); + free(tmp); + } +} + int nestegg_init(nestegg ** context, nestegg_io io, nestegg_log callback, int64_t max_offset) { @@ -2039,7 +2136,7 @@ nestegg_init(nestegg ** context, nestegg_io io, nestegg_log callback, int64_t ma if (ne_get_string(ctx->ebml.doctype, &doctype) != 0) doctype = "matroska"; - if (strcmp(doctype, "webm") != 0) { + if (!!strcmp(doctype, "webm") && !!strcmp(doctype, "matroska")) { nestegg_destroy(ctx); return -1; } @@ -2098,7 +2195,7 @@ nestegg_duration(nestegg * ctx, uint64_t * duration) return -1; if (unscaled_duration != unscaled_duration || - unscaled_duration < 0 || unscaled_duration > (double) UINT64_MAX || + unscaled_duration < 0 || unscaled_duration >= (double) UINT64_MAX || (uint64_t) unscaled_duration > UINT64_MAX / tc_scale) return -1; @@ -2295,6 +2392,9 @@ nestegg_track_codec_id(nestegg * ctx, unsigned int track) if (strcmp(codec_id, TRACK_ID_VP9) == 0) return NESTEGG_CODEC_VP9; + if (strcmp(codec_id, TRACK_ID_AV1) == 0) + return NESTEGG_CODEC_AV1; + if (strcmp(codec_id, TRACK_ID_VORBIS) == 0) return NESTEGG_CODEC_VORBIS; @@ -2350,61 +2450,67 @@ nestegg_track_codec_data(nestegg * ctx, unsigned int track, unsigned int item, { struct track_entry * entry; struct ebml_binary codec_private; - uint64_t sizes[3], size, total, avail; - unsigned char * p; - unsigned int count, i; *data = NULL; *length = 0; - count = 1; entry = ne_find_track_entry(ctx, track); if (!entry) return -1; - if (nestegg_track_codec_id(ctx, track) != NESTEGG_CODEC_VORBIS - && nestegg_track_codec_id(ctx, track) != NESTEGG_CODEC_OPUS) + if (nestegg_track_codec_id(ctx, track) != NESTEGG_CODEC_VORBIS && + nestegg_track_codec_id(ctx, track) != NESTEGG_CODEC_OPUS) return -1; if (ne_get_binary(entry->codec_private, &codec_private) != 0) return -1; if (nestegg_track_codec_id(ctx, track) == NESTEGG_CODEC_VORBIS) { - p = codec_private.data; - avail = codec_private.length; - if (avail < 1) - return -1; + uint64_t count; + uint64_t sizes[3]; + size_t total; + unsigned char * p; + unsigned int i; + int r; + + nestegg_io io; + struct io_buffer userdata; + userdata.buffer = codec_private.data; + userdata.length = codec_private.length; + userdata.offset = 0; + + io.read = ne_buffer_read; + io.seek = ne_buffer_seek; + io.tell = ne_buffer_tell; + io.userdata = &userdata; + + total = 0; - count = *p++ + 1; - avail -= 1; + r = ne_read_uint(&io, &count, 1); + if (r != 1) + return r; + total += 1; + count += 1; - if (count > 3 || item >= count) + if (count > 3) return -1; + r = ne_read_xiph_lacing(&io, codec_private.length, &total, count, sizes); + if (r != 1) + return r; - total = 0; - for (i = 0; i < count - 1; ++i) { - size = 0; - do { - if (avail - total <= size) { - return -1; - } - size += *p; - avail -= 1; - } while (*p++ == 255); - if (avail - total < size) - return -1; - sizes[i] = size; - total += size; - } - sizes[i] = avail - total; + if (item >= count) + return -1; + p = codec_private.data + total; for (i = 0; i < item; ++i) { p += sizes[i]; } + assert((size_t) (p - codec_private.data) <= codec_private.length && + codec_private.length - (p - codec_private.data) >= sizes[item]); *data = p; *length = sizes[item]; } else { - if (item >= count) + if (item >= 1) return -1; *data = codec_private.data; @@ -2700,7 +2806,7 @@ nestegg_read_packet(nestegg * ctx, nestegg_packet ** pkt) while (ne_io_tell(ctx->io) < block_group_end) { r = ne_read_element(ctx, &id, &size); if (r != 1) { - free(block_additional); + ne_free_block_additions(block_additional); if (*pkt) { nestegg_free_packet(*pkt); *pkt = NULL; @@ -2710,9 +2816,14 @@ nestegg_read_packet(nestegg * ctx, nestegg_packet ** pkt) switch (id) { case ID_BLOCK: { + if (*pkt) { + ctx->log(ctx, NESTEGG_LOG_DEBUG, + "read_packet: multiple Blocks in BlockGroup, dropping previously read Block"); + nestegg_free_packet(*pkt); + } r = ne_read_block(ctx, id, size, pkt); if (r != 1) { - free(block_additional); + ne_free_block_additions(block_additional); if (*pkt) { nestegg_free_packet(*pkt); *pkt = NULL; @@ -2726,7 +2837,7 @@ nestegg_read_packet(nestegg * ctx, nestegg_packet ** pkt) case ID_BLOCK_DURATION: { r = ne_read_uint(ctx->io, &block_duration, size); if (r != 1) { - free(block_additional); + ne_free_block_additions(block_additional); if (*pkt) { nestegg_free_packet(*pkt); *pkt = NULL; @@ -2735,7 +2846,7 @@ nestegg_read_packet(nestegg * ctx, nestegg_packet ** pkt) } tc_scale = ne_get_timecode_scale(ctx); if (tc_scale == 0) { - free(block_additional); + ne_free_block_additions(block_additional); if (*pkt) { nestegg_free_packet(*pkt); *pkt = NULL; @@ -2749,7 +2860,7 @@ nestegg_read_packet(nestegg * ctx, nestegg_packet ** pkt) case ID_DISCARD_PADDING: { r = ne_read_int(ctx->io, &discard_padding, size); if (r != 1) { - free(block_additional); + ne_free_block_additions(block_additional); if (*pkt) { nestegg_free_packet(*pkt); *pkt = NULL; @@ -2762,7 +2873,7 @@ nestegg_read_packet(nestegg * ctx, nestegg_packet ** pkt) case ID_BLOCK_ADDITIONS: { /* There should only be one BlockAdditions; treat multiple as an error. */ if (block_additional) { - free(block_additional); + ne_free_block_additions(block_additional); if (*pkt) { nestegg_free_packet(*pkt); *pkt = NULL; @@ -2771,7 +2882,7 @@ nestegg_read_packet(nestegg * ctx, nestegg_packet ** pkt) } r = ne_read_block_additions(ctx, size, &block_additional); if (r != 1) { - free(block_additional); + ne_free_block_additions(block_additional); if (*pkt) { nestegg_free_packet(*pkt); *pkt = NULL; @@ -2783,7 +2894,7 @@ nestegg_read_packet(nestegg * ctx, nestegg_packet ** pkt) case ID_REFERENCE_BLOCK: { r = ne_read_int(ctx->io, &reference_block, size); if (r != 1) { - free(block_additional); + ne_free_block_additions(block_additional); if (*pkt) { nestegg_free_packet(*pkt); *pkt = NULL; @@ -2800,7 +2911,7 @@ nestegg_read_packet(nestegg * ctx, nestegg_packet ** pkt) "read_packet: unknown element %llx in BlockGroup", id); r = ne_io_read_skip(ctx->io, size); if (r != 1) { - free(block_additional); + ne_free_block_additions(block_additional); if (*pkt) { nestegg_free_packet(*pkt); *pkt = NULL; @@ -2824,7 +2935,7 @@ nestegg_read_packet(nestegg * ctx, nestegg_packet ** pkt) predictive frames and no keyframes */ (*pkt)->keyframe = NESTEGG_PACKET_HAS_KEYFRAME_FALSE; } else { - free(block_additional); + ne_free_block_additions(block_additional); } break; } @@ -2843,26 +2954,16 @@ void nestegg_free_packet(nestegg_packet * pkt) { struct frame * frame; - struct block_additional * block_additional; while (pkt->frame) { frame = pkt->frame; pkt->frame = frame->next; - if (frame->frame_encryption) { - free(frame->frame_encryption->iv); - } - free(frame->frame_encryption); - free(frame->data); - free(frame); - } - while (pkt->block_additional) { - block_additional = pkt->block_additional; - pkt->block_additional = block_additional->next; - free(block_additional->data); - free(block_additional); + ne_free_frame(frame); } + ne_free_block_additions(pkt->block_additional); + free(pkt); } @@ -2977,6 +3078,7 @@ nestegg_packet_encryption(nestegg_packet * pkt) { struct frame * f = pkt->frame; unsigned char encrypted_bit; + unsigned char partitioned_bit; if (!f->frame_encryption) return NESTEGG_PACKET_HAS_SIGNAL_BYTE_FALSE; @@ -2985,10 +3087,14 @@ nestegg_packet_encryption(nestegg_packet * pkt) assert(f->next == NULL); encrypted_bit = f->frame_encryption->signal_byte & ENCRYPTED_BIT_MASK; + partitioned_bit = f->frame_encryption->signal_byte & PARTITIONED_BIT_MASK; if (encrypted_bit != PACKET_ENCRYPTED) return NESTEGG_PACKET_HAS_SIGNAL_BYTE_UNENCRYPTED; + if (partitioned_bit == PACKET_PARTITIONED) + return NESTEGG_PACKET_HAS_SIGNAL_BYTE_PARTITIONED; + return NESTEGG_PACKET_HAS_SIGNAL_BYTE_ENCRYPTED; } @@ -3017,6 +3123,35 @@ nestegg_packet_iv(nestegg_packet * pkt, unsigned char const ** iv, size_t * leng } int +nestegg_packet_offsets(nestegg_packet * pkt, + uint32_t const ** partition_offsets, + uint8_t * num_partitions) +{ + struct frame * f = pkt->frame; + unsigned char encrypted_bit; + unsigned char partitioned_bit; + + *partition_offsets = NULL; + *num_partitions = 0; + + if (!f->frame_encryption) + return -1; + + /* Should never have parsed blocks with both encryption and lacing */ + assert(f->next == NULL); + + encrypted_bit = f->frame_encryption->signal_byte & ENCRYPTED_BIT_MASK; + partitioned_bit = f->frame_encryption->signal_byte & PARTITIONED_BIT_MASK; + + if (encrypted_bit != PACKET_ENCRYPTED || partitioned_bit != PACKET_PARTITIONED) + return -1; + + *num_partitions = f->frame_encryption->num_partitions; + *partition_offsets = f->frame_encryption->partition_offsets; + return 0; +} + +int nestegg_has_cues(nestegg * ctx) { return ctx->segment.cues.cue_point.head || @@ -3027,7 +3162,7 @@ int nestegg_sniff(unsigned char const * buffer, size_t length) { nestegg_io io; - struct sniff_buffer userdata; + struct io_buffer userdata; userdata.buffer = buffer; userdata.length = length; |