#define PAL_FRAME_SIZE 144000
typedef struct DVDemuxContext {
- int is_audio;
+ int is_audio;
+ uint8_t buf[PAL_FRAME_SIZE];
+ int size;
} DVDemuxContext;
/* raw input */
static int dv_read_header(AVFormatContext *s,
AVFormatParameters *ap)
{
- AVStream *vst;
- // AVStream *ast;
+ AVStream *vst, *ast;
+ DVDemuxContext *c = s->priv_data;
vst = av_new_stream(s, 0);
if (!vst)
vst->codec.codec_type = CODEC_TYPE_VIDEO;
vst->codec.codec_id = CODEC_ID_DVVIDEO;
-#if 0
+
ast = av_new_stream(s, 1);
if (!ast)
return AVERROR_NOMEM;
ast->codec.codec_type = CODEC_TYPE_AUDIO;
ast->codec.codec_id = CODEC_ID_DVAUDIO;
-#endif
+ c->is_audio = 0;
+
return 0;
}
-/* XXX: build fake audio stream when DV audio decoder will be finished */
+static void __destruct_pkt(struct AVPacket *pkt)
+{
+ pkt->data = NULL; pkt->size = 0;
+ return;
+}
+
static int dv_read_packet(AVFormatContext *s, AVPacket *pkt)
{
- int ret, size, dsf;
- uint8_t buf[4];
+ int ret, dsf;
+ DVDemuxContext *c = s->priv_data;
- ret = get_buffer(&s->pb, buf, 4);
- if (ret <= 0)
- return -EIO;
- dsf = buf[3] & 0x80;
- if (!dsf)
- size = NTSC_FRAME_SIZE;
- else
- size = PAL_FRAME_SIZE;
-
- if (av_new_packet(pkt, size) < 0)
- return -EIO;
-
- pkt->stream_index = 0;
- memcpy(pkt->data, buf, 4);
- ret = get_buffer(&s->pb, pkt->data + 4, size - 4);
- if (ret <= 0) {
- av_free_packet(pkt);
- return -EIO;
+ if (!c->is_audio) {
+ ret = get_buffer(&s->pb, c->buf, 4);
+ if (ret <= 0)
+ return -EIO;
+ dsf = c->buf[3] & 0x80;
+ if (!dsf)
+ c->size = NTSC_FRAME_SIZE;
+ else
+ c->size = PAL_FRAME_SIZE;
+
+ ret = get_buffer(&s->pb, c->buf + 4, c->size - 4);
+ if (ret <= 0)
+ return -EIO;
}
- return ret;
+
+ av_init_packet(pkt);
+ pkt->destruct = __destruct_pkt;
+ pkt->data = c->buf;
+ pkt->size = c->size;
+ pkt->stream_index = c->is_audio;
+ pkt->flags |= PKT_FLAG_KEY;
+
+ c->is_audio = !c->is_audio;
+ return c->size;
}
static int dv_read_close(AVFormatContext *s)
.extensions = "dv",
};
-#if 0
+
int dv_write_header(struct AVFormatContext *s)
{
return 0;
dv_write_packet,
dv_write_trailer,
};
-#endif
int dv_init(void)
{
av_register_input_format(&dv_iformat);
- // av_register_output_format(&dv_oformat);
+ av_register_output_format(&dv_oformat);
return 0;
}