//#define DEBUG
//#define DEBUG_SEEK
+#include <strings.h>
#include "libavutil/intreadwrite.h"
#include "libavutil/bswap.h"
-#include "libavcodec/bytestream.h"
#include "avformat.h"
#include "avi.h"
#include "dv.h"
static int avi_load_index(AVFormatContext *s);
static int guess_ni_flag(AVFormatContext *s);
-#ifdef DEBUG
-static void print_tag(const char *str, unsigned int tag, int size)
-{
- dprintf(NULL, "%s: tag=%c%c%c%c size=0x%x\n",
- str, tag & 0xff,
- (tag >> 8) & 0xff,
- (tag >> 16) & 0xff,
- (tag >> 24) & 0xff,
- size);
-}
-#endif
+#define print_tag(str, tag, size) \
+ av_dlog(NULL, "%s: tag=%c%c%c%c size=0x%x\n", \
+ str, tag & 0xff, \
+ (tag >> 8) & 0xff, \
+ (tag >> 16) & 0xff, \
+ (tag >> 24) & 0xff, \
+ size)
static inline int get_duration(AVIStream *ast, int len){
if(ast->sample_size){
AV_WL32(key, tag);
- if(st)
- return av_metadata_set2(&st->metadata, key, value,
- AV_METADATA_DONT_STRDUP_VAL);
- else
- return av_metadata_set2(&s->metadata, key, value,
- AV_METADATA_DONT_STRDUP_VAL);
+ return av_metadata_set2(st ? &st->metadata : &s->metadata, key, value,
+ AV_METADATA_DONT_STRDUP_VAL);
}
static void avi_read_info(AVFormatContext *s, uint64_t end)
}
}
+static const char months[12][4] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun",
+ "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
+
+static void avi_metadata_creation_time(AVMetadata **metadata, char *date)
+{
+ char month[4], time[9], buffer[64];
+ int i, day, year;
+ /* parse standard AVI date format (ie. "Mon Mar 10 15:04:43 2003") */
+ if (sscanf(date, "%*3s%*[ ]%3s%*[ ]%2d%*[ ]%8s%*[ ]%4d",
+ month, &day, time, &year) == 4) {
+ for (i=0; i<12; i++)
+ if (!strcasecmp(month, months[i])) {
+ snprintf(buffer, sizeof(buffer), "%.4d-%.2d-%.2d %s",
+ year, i+1, day, time);
+ av_metadata_set2(metadata, "creation_time", buffer, 0);
+ }
+ } else if (date[4] == '/' && date[7] == '/') {
+ date[4] = date[7] = '-';
+ av_metadata_set2(metadata, "creation_time", date, 0);
+ }
+}
+
+static void avi_read_nikon(AVFormatContext *s, uint64_t end)
+{
+ while (url_ftell(s->pb) < end) {
+ uint32_t tag = get_le32(s->pb);
+ uint32_t size = get_le32(s->pb);
+ switch (tag) {
+ case MKTAG('n', 'c', 't', 'g'): { /* Nikon Tags */
+ uint64_t tag_end = url_ftell(s->pb) + size;
+ while (url_ftell(s->pb) < tag_end) {
+ uint16_t tag = get_le16(s->pb);
+ uint16_t size = get_le16(s->pb);
+ const char *name = NULL;
+ char buffer[64] = {0};
+ size -= get_buffer(s->pb, buffer,
+ FFMIN(size, sizeof(buffer)-1));
+ switch (tag) {
+ case 0x03: name = "maker"; break;
+ case 0x04: name = "model"; break;
+ case 0x13: name = "creation_time";
+ if (buffer[4] == ':' && buffer[7] == ':')
+ buffer[4] = buffer[7] = '-';
+ break;
+ }
+ if (name)
+ av_metadata_set2(&s->metadata, name, buffer, 0);
+ url_fskip(s->pb, size);
+ }
+ break;
+ }
+ default:
+ url_fskip(s->pb, size);
+ break;
+ }
+ }
+}
+
static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap)
{
AVIContext *avi = s->priv_data;
goto fail;
tag = get_le32(pb);
size = get_le32(pb);
-#ifdef DEBUG
+
print_tag("tag", tag, size);
-#endif
switch(tag) {
case MKTAG('L', 'I', 'S', 'T'):
list_end = url_ftell(pb) + size;
/* Ignored, except at start of video packets. */
tag1 = get_le32(pb);
-#ifdef DEBUG
+
print_tag("list", tag1, 0);
-#endif
+
if (tag1 == MKTAG('m', 'o', 'v', 'i')) {
avi->movi_list = url_ftell(pb) - 4;
if(size) avi->movi_end = avi->movi_list + size + (size & 1);
else avi->movi_end = url_fsize(pb);
- dprintf(NULL, "movi end=%"PRIx64"\n", avi->movi_end);
+ av_dlog(NULL, "movi end=%"PRIx64"\n", avi->movi_end);
goto end_of_header;
}
else if (tag1 == MKTAG('I', 'N', 'F', 'O'))
avi_read_info(s, list_end);
+ else if (tag1 == MKTAG('n', 'c', 'd', 't'))
+ avi_read_nikon(s, list_end);
break;
+ case MKTAG('I', 'D', 'I', 'T'): {
+ unsigned char date[64] = {0};
+ size += (size & 1);
+ size -= get_buffer(pb, date, FFMIN(size, sizeof(date)-1));
+ url_fskip(pb, size);
+ avi_metadata_creation_time(&s->metadata, date);
+ break;
+ }
case MKTAG('d', 'm', 'l', 'h'):
avi->is_odml = 1;
url_fskip(pb, size + (size & 1));
if(amv_file_format)
tag1 = stream_index ? MKTAG('a','u','d','s') : MKTAG('v','i','d','s');
-#ifdef DEBUG
print_tag("strh", tag1, -1);
-#endif
+
if(tag1 == MKTAG('i', 'a', 'v', 's') || tag1 == MKTAG('i', 'v', 'a', 's')){
int64_t dv_dur;
url_fskip(pb, size);
break;
}
- get_le32(pb); /* size */
- st->codec->width = get_le32(pb);
- st->codec->height = (int32_t)get_le32(pb);
- get_le16(pb); /* panes */
- st->codec->bits_per_coded_sample= get_le16(pb); /* depth */
- tag1 = get_le32(pb);
- get_le32(pb); /* ImageSize */
- get_le32(pb); /* XPelsPerMeter */
- get_le32(pb); /* YPelsPerMeter */
- get_le32(pb); /* ClrUsed */
- get_le32(pb); /* ClrImportant */
+ tag1 = ff_get_bmp_header(pb, st);
if (tag1 == MKTAG('D', 'X', 'S', 'B') || tag1 == MKTAG('D','X','S','A')) {
st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
st->codec->palctrl->palette_changed = 1;
}
-#ifdef DEBUG
print_tag("video", tag1, 0);
-#endif
+
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
st->codec->codec_tag = tag1;
st->codec->codec_id = ff_codec_get_id(ff_codec_bmp_tags, tag1);
clean_index(s);
}
+ ff_metadata_conv_ctx(s, NULL, ff_avi_metadata_conv);
+
return 0;
}
static int read_gab2_sub(AVStream *st, AVPacket *pkt) {
if (!strcmp(pkt->data, "GAB2") && AV_RL16(pkt->data+5) == 2) {
- uint8_t desc[256], *d = desc;
- uint8_t *end, *ptr = pkt->data+7;
- unsigned int size, desc_len = bytestream_get_le32(&ptr);
- int score = AVPROBE_SCORE_MAX / 2;
+ uint8_t desc[256];
+ int score = AVPROBE_SCORE_MAX / 2, ret;
AVIStream *ast = st->priv_data;
AVInputFormat *sub_demuxer;
AVRational time_base;
- ByteIOContext *pb;
+ ByteIOContext *pb = av_alloc_put_byte(pkt->data + 7,
+ pkt->size - 7,
+ 0, NULL, NULL, NULL, NULL);
AVProbeData pd;
+ unsigned int desc_len = get_le32(pb);
- if (desc_len > FFMAX(pkt->size-17, 0))
- return 0;
+ if (desc_len > pb->buf_end - pb->buf_ptr)
+ goto error;
- end = ptr + desc_len;
- while (ptr < end-1) {
- uint8_t tmp;
- uint32_t ch;
- GET_UTF16(ch, ptr < end-1 ? bytestream_get_le16(&ptr) : 0, break;);
- PUT_UTF8(ch, tmp, if(d-desc < sizeof(desc)-1) *d++ = tmp;);
- }
- *d = 0;
+ ret = avio_get_str16le(pb, desc_len, desc, sizeof(desc));
+ url_fskip(pb, desc_len - ret);
if (*desc)
av_metadata_set2(&st->metadata, "title", desc, 0);
- ptr = end + 2;
- size = bytestream_get_le32(&ptr);
- size = FFMIN(size, pkt->size+pkt->data-ptr);
+ get_le16(pb); /* flags? */
+ get_le32(pb); /* data size */
- pd = (AVProbeData) { .buf = ptr, .buf_size = size };
+ pd = (AVProbeData) { .buf = pb->buf_ptr, .buf_size = pb->buf_end - pb->buf_ptr };
if (!(sub_demuxer = av_probe_input_format2(&pd, 1, &score)))
- return 0;
+ goto error;
- pb = av_alloc_put_byte(ptr, size, 0, NULL, NULL, NULL, NULL);
if (!av_open_input_stream(&ast->sub_ctx, pb, "", sub_demuxer, NULL)) {
av_read_packet(ast->sub_ctx, &ast->sub_pkt);
*st->codec = *ast->sub_ctx->streams[0]->codec;
ast->sub_buffer = pkt->data;
memset(pkt, 0, sizeof(*pkt));
return 1;
+error:
+ av_freep(&pb);
}
return 0;
}
for (i=0; i<s->nb_streams; i++) {
st = s->streams[i];
ast = st->priv_data;
- if (st->discard < AVDISCARD_ALL && ast->sub_pkt.data) {
+ if (st->discard < AVDISCARD_ALL && ast && ast->sub_pkt.data) {
ts = av_rescale_q(ast->sub_pkt.dts, st->time_base, AV_TIME_BASE_Q);
if (ts <= next_ts && ts < ts_min) {
ts_min = ts;
AVStream *st = s->streams[i];
AVIStream *ast = st->priv_data;
av_free(st->codec->palctrl);
- if (ast->sub_ctx) {
- av_freep(&ast->sub_ctx->pb);
- av_close_input_stream(ast->sub_ctx);
+ if (ast) {
+ if (ast->sub_ctx) {
+ av_freep(&ast->sub_ctx->pb);
+ av_close_input_stream(ast->sub_ctx);
+ }
+ av_free(ast->sub_buffer);
+ av_free_packet(&ast->sub_pkt);
}
- av_free(ast->sub_buffer);
- av_free_packet(&ast->sub_pkt);
}
- if (avi->dv_demux)
- av_free(avi->dv_demux);
+ av_free(avi->dv_demux);
return 0;
}
return 0;
}
-AVInputFormat avi_demuxer = {
+AVInputFormat ff_avi_demuxer = {
"avi",
NULL_IF_CONFIG_SMALL("AVI format"),
sizeof(AVIContext),
avi_read_packet,
avi_read_close,
avi_read_seek,
- .metadata_conv = ff_avi_metadata_conv,
};
projects / ffmpeg / blobdiff