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-rw-r--r--src/demuxers/demux_qt.c337
1 files changed, 208 insertions, 129 deletions
diff --git a/src/demuxers/demux_qt.c b/src/demuxers/demux_qt.c
index b9fadc804..89d0283ac 100644
--- a/src/demuxers/demux_qt.c
+++ b/src/demuxers/demux_qt.c
@@ -107,6 +107,8 @@ typedef unsigned int qt_atom;
#define UDTA_ATOM QT_ATOM('u', 'd', 't', 'a')
#define META_ATOM QT_ATOM('m', 'e', 't', 'a')
+#define HDLR_ATOM QT_ATOM('h', 'd', 'l', 'r')
+#define ILST_ATOM QT_ATOM('i', 'l', 's', 't')
#define NAM_ATOM QT_ATOM(0xA9, 'n', 'a', 'm')
#define CPY_ATOM QT_ATOM(0xA9, 'c', 'p', 'y')
#define DES_ATOM QT_ATOM(0xA9, 'd', 'e', 's')
@@ -133,8 +135,10 @@ typedef unsigned int qt_atom;
#define MAX_PTS_DIFF 100000
-/* network bandwidth, cribbed from src/input/input_mms.c */
-const int64_t bandwidths[]={14400,19200,28800,33600,34430,57600,
+/**
+ * @brief Network bandwidth, cribbed from src/input/input_mms.c
+ */
+static const int64_t bandwidths[]={14400,19200,28800,33600,34430,57600,
115200,262200,393216,524300,1544000,10485800};
/* these are things that can go wrong */
@@ -401,6 +405,10 @@ typedef struct {
* demuxer is sending off to the audio decoder */
#define DEBUG_AUDIO_DEMUX 0
+/* define DEBUG_META_LOAD as 1 to see details about the metadata chunks the
+ * demuxer is reading from the file */
+#define DEBUG_META_LOAD 0
+
/* Define DEBUG_DUMP_MOOV as 1 to dump the raw moov atom to disk. This is
* particularly useful in debugging a file with a compressed moov (cmov)
* atom. The atom will be dumped to the filename specified as
@@ -408,10 +416,6 @@ typedef struct {
#define DEBUG_DUMP_MOOV 0
#define RAW_MOOV_FILENAME "moovatom.raw"
-#ifndef __GNUC__
-#define __attribute__(x)
-#endif
-
#if DEBUG_ATOM_LOAD
#define debug_atom_load printf
#else
@@ -442,6 +446,12 @@ static inline void XINE_FORMAT_PRINTF(1, 2) debug_video_demux(const char *format
static inline void XINE_FORMAT_PRINTF(1, 2) debug_audio_demux(const char *format, ...) {}
#endif
+#if DEBUG_META_LOAD
+#define debug_meta_load printf
+#else
+static inline void XINE_FORMAT_PRINTF(1, 2) debug_meta_load(const char *format, ...) {}
+#endif
+
static inline void dump_moov_atom(unsigned char *moov_atom, int moov_atom_size) {
#if DEBUG_DUMP_MOOV
@@ -726,52 +736,114 @@ static int is_qt_file(input_plugin_t *qt_file) {
}
}
+static char *parse_data_atom(unsigned char *data_atom) {
+ const uint32_t data_atom_size = _X_BE_32(&data_atom[0]);
+
+ static const int data_atom_max_version = 0;
+ const int data_atom_version = data_atom[8];
+
+ const size_t alloc_size = data_atom_size - 8 + 1;
+ char *alloc_str = NULL;
+
+ if ( data_atom_version > data_atom_max_version ) {
+ debug_meta_load("demux_qt: version %d for data atom is higher than the highest supported version (%d)\n",
+ data_atom_version, data_atom_max_version);
+ return NULL;
+ }
+
+ alloc_str = xine_xmalloc(alloc_size);
+ xine_fast_memcpy(alloc_str, &data_atom[16], alloc_size-1);
+ alloc_str[alloc_size-1] = '\0';
+
+ debug_meta_load("demux_qt: got a string of size %zd (%s)\n", alloc_size, alloc_str);
+
+ return alloc_str;
+}
+
/* parse out a meta data atom */
static void parse_meta_atom(qt_info *info, unsigned char *meta_atom) {
- int i;
- unsigned int meta_atom_size = _X_BE_32(&meta_atom[0]);
- qt_atom current_atom;
- int string_size;
-
- for (i = 0; i < meta_atom_size - 4; i++) {
- current_atom = _X_BE_32(&meta_atom[i]);
-
- if (current_atom == ART_ATOM) {
- string_size = _X_BE_32(&meta_atom[i + 4]) - 16 + 1;
- info->artist = xine_xmalloc(string_size);
- strncpy(info->artist, &meta_atom[i + 20], string_size - 1);
- info->artist[string_size - 1] = 0;
- } else if (current_atom == NAM_ATOM) {
- string_size = _X_BE_32(&meta_atom[i + 4]) - 16 + 1;
- info->name = xine_xmalloc(string_size);
- strncpy(info->name, &meta_atom[i + 20], string_size - 1);
- info->name[string_size - 1] = 0;
- } else if (current_atom == ALB_ATOM) {
- string_size = _X_BE_32(&meta_atom[i + 4]) - 16 + 1;
- info->album = xine_xmalloc(string_size);
- strncpy(info->album, &meta_atom[i + 20], string_size - 1);
- info->album[string_size - 1] = 0;
- } else if (current_atom == GEN_ATOM) {
- string_size = _X_BE_32(&meta_atom[i + 4]) - 16 + 1;
- info->genre = xine_xmalloc(string_size);
- strncpy(info->genre, &meta_atom[i + 20], string_size - 1);
- info->genre[string_size - 1] = 0;
- } else if (current_atom == TOO_ATOM) {
- string_size = _X_BE_32(&meta_atom[i + 4]) - 16 + 1;
- info->comment = xine_xmalloc(string_size);
- strncpy(info->comment, &meta_atom[i + 20], string_size - 1);
- info->comment[string_size - 1] = 0;
- } else if (current_atom == WRT_ATOM) {
- string_size = _X_BE_32(&meta_atom[i + 4]) - 16 + 1;
- info->composer = xine_xmalloc(string_size);
- strncpy(info->composer, &meta_atom[i + 20], string_size - 1);
- info->composer[string_size - 1] = 0;
- } else if (current_atom == DAY_ATOM) {
- string_size = _X_BE_32(&meta_atom[i + 4]) - 16 + 1;
- info->year = xine_xmalloc(string_size);
- strncpy(info->year, &meta_atom[i + 20], string_size - 1);
- info->year[string_size - 1] = 0;
+ static const uint32_t meta_atom_preamble_size = 12;
+
+ const uint32_t meta_atom_size = _X_BE_32(&meta_atom[0]);
+
+ static const int meta_atom_max_version = 0;
+ const int meta_atom_version = meta_atom[8];
+ /* const uint32_t flags = _X_BE_24(&meta_atom[9]); */
+
+ uint32_t i = meta_atom_preamble_size;
+
+ if ( meta_atom_version > meta_atom_max_version ) {
+ debug_meta_load("demux_qt: version %d for meta atom is higher than the highest supported version (%d)\n",
+ meta_atom_version, meta_atom_max_version);
+ return;
+ }
+
+ while ( i < meta_atom_size ) {
+ const uint8_t *const current_atom = &meta_atom[i];
+ const qt_atom current_atom_code = _X_BE_32(&current_atom[4]);
+ const uint32_t current_atom_size = _X_BE_32(&current_atom[0]);
+ uint32_t handler_type = 0;
+
+ switch (current_atom_code) {
+ case HDLR_ATOM: {
+ static const int hdlr_atom_max_version = 0;
+ const int hdlr_atom_version = current_atom[8];
+
+ /* const uint32_t hdlr_atom_flags = _X_BE_24(&current_atom[9]); */
+
+ if ( hdlr_atom_version > hdlr_atom_max_version ) {
+ debug_meta_load("demux_qt: version %d for hdlr atom is higher than the highest supported version (%d)\n",
+ hdlr_atom_version, hdlr_atom_max_version);
+ return;
+ }
+
+ handler_type = _X_BE_32(&current_atom[12]);
}
+ break;
+
+ case ILST_ATOM: {
+ uint32_t j = i + 8;
+ while ( j < current_atom_size ) {
+ const uint8_t *const sub_atom = &meta_atom[j];
+ const qt_atom sub_atom_code = _X_BE_32(&sub_atom[4]);
+ const uint32_t sub_atom_size = _X_BE_32(&sub_atom[0]);
+
+ switch(sub_atom_code) {
+ case ART_ATOM:
+ info->artist = parse_data_atom(&sub_atom[8]);
+ break;
+ case NAM_ATOM:
+ info->name = parse_data_atom(&sub_atom[8]);
+ break;
+ case ALB_ATOM:
+ info->album = parse_data_atom(&sub_atom[8]);
+ break;
+ case GEN_ATOM:
+ info->genre = parse_data_atom(&sub_atom[8]);
+ break;
+ case CMT_ATOM:
+ info->comment = parse_data_atom(&sub_atom[8]);
+ break;
+ case WRT_ATOM:
+ info->composer = parse_data_atom(&sub_atom[8]);
+ break;
+ case DAY_ATOM:
+ info->year = parse_data_atom(&sub_atom[8]);
+ break;
+ default:
+ debug_meta_load("unknown atom %08x in ilst\n", sub_atom_code);
+ }
+
+ j += sub_atom_size;
+ }
+ }
+ break;
+
+ default:
+ debug_meta_load("unknown atom %08x in meta\n", current_atom_code);
+ }
+
+ i += current_atom_size;
}
}
@@ -813,25 +885,11 @@ static qt_error parse_trak_atom (qt_trak *trak,
unsigned char *trak_atom) {
int i, j, k;
- unsigned int trak_atom_size = _X_BE_32(&trak_atom[0]);
- qt_atom current_atom;
- unsigned int current_atom_size;
+ const unsigned int trak_atom_size = _X_BE_32(&trak_atom[0]);
unsigned int atom_pos;
unsigned int properties_offset;
- unsigned int current_stsd_atom_size;
qt_error last_error = QT_OK;
- /* for palette traversal */
- int color_depth;
- int color_flag;
- int color_start;
- int color_count;
- int color_end;
- int color_index;
- int color_dec;
- int color_greyscale;
- const unsigned char *color_table;
-
/* initialize trak structure */
trak->edit_list_count = 0;
trak->edit_list_table = NULL;
@@ -862,12 +920,13 @@ static qt_error parse_trak_atom (qt_trak *trak,
/* search for media type atoms */
for (i = ATOM_PREAMBLE_SIZE; i < trak_atom_size - 4; i++) {
- current_atom = _X_BE_32(&trak_atom[i]);
+ const qt_atom current_atom = _X_BE_32(&trak_atom[i]);
- if (current_atom == VMHD_ATOM) {
+ switch (current_atom) {
+ case VMHD_ATOM:
trak->type = MEDIA_VIDEO;
break;
- } else if (current_atom == SMHD_ATOM) {
+ case SMHD_ATOM:
trak->type = MEDIA_AUDIO;
break;
}
@@ -879,13 +938,15 @@ static qt_error parse_trak_atom (qt_trak *trak,
/* search for the useful atoms */
for (i = ATOM_PREAMBLE_SIZE; i < trak_atom_size - 4; i++) {
- current_atom_size = _X_BE_32(&trak_atom[i - 4]);
- current_atom = _X_BE_32(&trak_atom[i]);
+ const current_atom_size = _X_BE_32(&trak_atom[i - 4]);
+ const current_atom = _X_BE_32(&trak_atom[i]);
- if (current_atom == TKHD_ATOM) {
+ switch(current_atom) {
+ case TKHD_ATOM:
trak->flags = _X_BE_16(&trak_atom[i + 6]);
- } else if (current_atom == ELST_ATOM) {
+ break;
+ case ELST_ATOM:
/* there should only be one edit list table */
if (trak->edit_list_table) {
last_error = QT_HEADER_TROUBLE;
@@ -915,17 +976,19 @@ static qt_error parse_trak_atom (qt_trak *trak,
trak->edit_list_table[j].track_duration,
trak->edit_list_table[j].media_time);
}
+ break;
- } else if (current_atom == MDHD_ATOM) {
- int version;
+ case MDHD_ATOM:
debug_atom_load ("demux_qt: mdhd atom\n");
-
- version = trak_atom[i+4];
- if ( version > 1 ) continue; /* unsupported, undocumented */
+ {
+ const int version = trak_atom[i+4];
+ if ( version > 1 ) continue; /* unsupported, undocumented */
- trak->timescale = _X_BE_32(&trak_atom[i + (version == 0 ? 0x10 : 0x18) ]);
- } else if (current_atom == STSD_ATOM) {
+ trak->timescale = _X_BE_32(&trak_atom[i + (version == 0 ? 0x10 : 0x18) ]);
+ }
+ break;
+ case STSD_ATOM:
debug_atom_load ("demux_qt: stsd atom\n");
#if DEBUG_ATOM_LOAD
xine_hexdump (&trak_atom[i], current_atom_size);
@@ -933,18 +996,28 @@ static qt_error parse_trak_atom (qt_trak *trak,
/* allocate space for each of the properties unions */
trak->stsd_atoms_count = _X_BE_32(&trak_atom[i + 8]);
- trak->stsd_atoms = xine_xmalloc(trak->stsd_atoms_count * sizeof(properties_t));
+ trak->stsd_atoms = xine_xcalloc(trak->stsd_atoms_count, sizeof(properties_t));
if (!trak->stsd_atoms) {
last_error = QT_NO_MEMORY;
goto free_trak;
}
- memset(trak->stsd_atoms, 0, trak->stsd_atoms_count * sizeof(properties_t));
atom_pos = i + 0x10;
properties_offset = 0x0C;
for (k = 0; k < trak->stsd_atoms_count; k++) {
- current_stsd_atom_size = _X_BE_32(&trak_atom[atom_pos - 4]);
+ const uint32_t current_stsd_atom_size = _X_BE_32(&trak_atom[atom_pos - 4]);
+
+ /* for palette traversal */
+ int color_depth;
+ int color_flag;
+ int color_start;
+ int color_count;
+ int color_end;
+ int color_index;
+ int color_dec;
+ int color_greyscale;
+ const unsigned char *color_table;
if (trak->type == MEDIA_VIDEO) {
@@ -1225,7 +1298,7 @@ static qt_error parse_trak_atom (qt_trak *trak,
(_X_BE_32(&trak_atom[atom_pos + 0x34]) == WAVE_ATOM) &&
(_X_BE_32(&trak_atom[atom_pos + 0x3C]) == FRMA_ATOM) &&
(_X_ME_32(&trak_atom[atom_pos + 0x48]) == trak->stsd_atoms[k].audio.codec_fourcc)) {
- int wave_size = _X_BE_32(&trak_atom[atom_pos + 0x44]) - 8;
+ const int wave_size = _X_BE_32(&trak_atom[atom_pos + 0x44]) - 8;
if ((wave_size >= sizeof(xine_waveformatex)) &&
(current_atom_size >= (0x4C + wave_size))) {
@@ -1275,15 +1348,15 @@ static qt_error parse_trak_atom (qt_trak *trak,
atom_pos += current_stsd_atom_size;
properties_offset += current_stsd_atom_size;
}
-
- } else if (current_atom == ESDS_ATOM) {
-
- uint32_t len;
+ break;
+
+ case ESDS_ATOM:
debug_atom_load(" qt/mpeg-4 esds atom\n");
if ((trak->type == MEDIA_VIDEO) ||
(trak->type == MEDIA_AUDIO)) {
+ uint32_t len;
j = i + 8;
if( trak_atom[j++] == 0x03 ) {
@@ -1306,17 +1379,17 @@ static qt_error parse_trak_atom (qt_trak *trak,
}
}
}
+ break;
- } else if (current_atom == AVCC_ATOM) {
-
+ case AVCC_ATOM:
debug_atom_load(" avcC atom\n");
trak->decoder_config_len = current_atom_size - 8;
trak->decoder_config = realloc(trak->decoder_config, trak->decoder_config_len);
memcpy(trak->decoder_config, &trak_atom[i + 4], trak->decoder_config_len);
+ break;
- } else if (current_atom == STSZ_ATOM) {
-
+ case STSZ_ATOM:
/* there should only be one of these atoms */
if (trak->sample_size_table) {
last_error = QT_HEADER_TROUBLE;
@@ -1348,9 +1421,9 @@ static qt_error parse_trak_atom (qt_trak *trak,
/* set the pointer to non-NULL to indicate that the atom type has
* already been seen for this trak atom */
trak->sample_size_table = (void *)-1;
+ break;
- } else if (current_atom == STSS_ATOM) {
-
+ case STSS_ATOM:
/* there should only be one of these atoms */
if (trak->sync_sample_table) {
last_error = QT_HEADER_TROUBLE;
@@ -1377,9 +1450,9 @@ static qt_error parse_trak_atom (qt_trak *trak,
j, trak->sync_sample_table[j],
trak->sync_sample_table[j] - 1);
}
+ break;
- } else if (current_atom == STCO_ATOM) {
-
+ case STCO_ATOM:
/* there should only be one of either stco or co64 */
if (trak->chunk_offset_table) {
last_error = QT_HEADER_TROUBLE;
@@ -1405,9 +1478,9 @@ static qt_error parse_trak_atom (qt_trak *trak,
debug_atom_load(" chunk %d @ 0x%"PRIX64"\n",
j, trak->chunk_offset_table[j]);
}
+ break;
- } else if (current_atom == CO64_ATOM) {
-
+ case CO64_ATOM:
/* there should only be one of either stco or co64 */
if (trak->chunk_offset_table) {
last_error = QT_HEADER_TROUBLE;
@@ -1436,9 +1509,9 @@ static qt_error parse_trak_atom (qt_trak *trak,
debug_atom_load(" chunk %d @ 0x%"PRIX64"\n",
j, trak->chunk_offset_table[j]);
}
+ break;
- } else if (current_atom == STSC_ATOM) {
-
+ case STSC_ATOM:
/* there should only be one of these atoms */
if (trak->sample_to_chunk_table) {
last_error = QT_HEADER_TROUBLE;
@@ -1471,9 +1544,9 @@ static qt_error parse_trak_atom (qt_trak *trak,
trak->sample_to_chunk_table[j].first_chunk - 1,
trak->sample_to_chunk_table[j].media_id);
}
+ break;
- } else if (current_atom == STTS_ATOM) {
-
+ case STTS_ATOM:
/* there should only be one of these atoms */
if (trak->time_to_sample_table) {
last_error = QT_HEADER_TROUBLE;
@@ -1533,9 +1606,7 @@ static qt_error parse_reference_atom (reference_t *ref,
char *base_mrl) {
int i, j;
- unsigned int ref_atom_size = _X_BE_32(&ref_atom[0]);
- qt_atom current_atom;
- unsigned int current_atom_size;
+ const unsigned int ref_atom_size = _X_BE_32(&ref_atom[0]);
/* initialize reference atom */
ref->url = NULL;
@@ -1544,11 +1615,11 @@ static qt_error parse_reference_atom (reference_t *ref,
/* traverse through the atom looking for the key atoms */
for (i = ATOM_PREAMBLE_SIZE; i < ref_atom_size - 4; i++) {
+ const uint32_t current_atom_size = _X_BE_32(&ref_atom[i - 4]);
+ const qt_atom current_atom = _X_BE_32(&ref_atom[i]);
- current_atom_size = _X_BE_32(&ref_atom[i - 4]);
- current_atom = _X_BE_32(&ref_atom[i]);
-
- if (current_atom == RDRF_ATOM) {
+ switch (current_atom) {
+ case RDRF_ATOM:
/* if the URL starts with "http://", copy it */
if (strncmp(&ref_atom[i + 16], "http://", 7) == 0
@@ -1577,17 +1648,17 @@ static qt_error parse_reference_atom (reference_t *ref,
}
debug_atom_load(" qt rdrf URL reference:\n %s\n", ref->url);
+ break;
- } else if (current_atom == RMDR_ATOM) {
-
+ case RMDR_ATOM:
/* load the data rate */
ref->data_rate = _X_BE_32(&ref_atom[i + 8]);
ref->data_rate *= 10;
debug_atom_load(" qt rmdr data rate = %"PRId64"\n", ref->data_rate);
+ break;
- } else if (current_atom == RMVC_ATOM) {
-
+ case RMVC_ATOM:
debug_atom_load(" qt rmvc atom\n");
/* search the rmvc atom for 'qtim'; 2 bytes will follow the qtim
@@ -1915,7 +1986,6 @@ static void parse_moov_atom(qt_info *info, unsigned char *moov_atom,
int64_t bandwidth) {
int i, j;
unsigned int moov_atom_size = _X_BE_32(&moov_atom[0]);
- qt_atom current_atom;
int string_size, error;
unsigned int max_video_frames = 0;
unsigned int max_audio_frames = 0;
@@ -1930,15 +2000,17 @@ static void parse_moov_atom(qt_info *info, unsigned char *moov_atom,
/* prowl through the moov atom looking for very specific targets */
for (i = ATOM_PREAMBLE_SIZE + 4; i < moov_atom_size - 4; i += _X_BE_32(&moov_atom[i - 4])) {
- current_atom = _X_BE_32(&moov_atom[i]);
+ const qt_atom current_atom = _X_BE_32(&moov_atom[i]);
- if (current_atom == MVHD_ATOM) {
+ switch (current_atom) {
+ case MVHD_ATOM:
parse_mvhd_atom(info, &moov_atom[i - 4]);
if (info->last_error != QT_OK)
return;
- } else if (current_atom == TRAK_ATOM) {
+ break;
+ case TRAK_ATOM:
/* create a new trak structure */
info->trak_count++;
info->traks = (qt_trak *)realloc(info->traks,
@@ -1950,44 +2022,50 @@ static void parse_moov_atom(qt_info *info, unsigned char *moov_atom,
info->trak_count--;
return;
}
+ break;
+
+ case UDTA_ATOM:
+ parse_meta_atom(info, &moov_atom[i + 4]);
+ if (info->last_error != QT_OK)
+ return;
+ break;
- } else if (current_atom == META_ATOM) {
-
+ case META_ATOM:
parse_meta_atom(info, &moov_atom[i - 4]);
if (info->last_error != QT_OK)
return;
+ break;
- } else if (current_atom == NAM_ATOM) {
-
+ case NAM_ATOM:
string_size = _X_BE_16(&moov_atom[i + 4]) + 1;
info->name = realloc (info->name, string_size);
strncpy(info->name, &moov_atom[i + 8], string_size - 1);
info->name[string_size - 1] = 0;
+ break;
- } else if (current_atom == CPY_ATOM) {
-
+ case CPY_ATOM:
string_size = _X_BE_16(&moov_atom[i + 4]) + 1;
info->copyright = realloc (info->copyright, string_size);
strncpy(info->copyright, &moov_atom[i + 8], string_size - 1);
info->copyright[string_size - 1] = 0;
+ break;
- } else if (current_atom == DES_ATOM) {
-
+ case DES_ATOM:
string_size = _X_BE_16(&moov_atom[i + 4]) + 1;
info->description = realloc (info->description, string_size);
strncpy(info->description, &moov_atom[i + 8], string_size - 1);
info->description[string_size - 1] = 0;
+ break;
- } else if (current_atom == CMT_ATOM) {
-
+ case CMT_ATOM:
string_size = _X_BE_16(&moov_atom[i + 4]) + 1;
info->comment = realloc (info->comment, string_size);
strncpy(info->comment, &moov_atom[i + 8], string_size - 1);
info->comment[string_size - 1] = 0;
+ break;
- } else if (current_atom == RMDA_ATOM ||
- current_atom == RMRA_ATOM) {
-
+ case RMDA_ATOM:
+ case RMRA_ATOM:
/* create a new reference structure */
info->reference_count++;
info->references = (reference_t *)realloc(info->references,
@@ -1995,8 +2073,9 @@ static void parse_moov_atom(qt_info *info, unsigned char *moov_atom,
parse_reference_atom(&info->references[info->reference_count - 1],
&moov_atom[i - 4], info->base_mrl);
+ break;
- } else {
+ default:
debug_atom_load(" qt: unknown atom into the moov atom (0x%08X)\n", current_atom);
}
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-26 12:29:52 +0000