#include "avformat.h"
#define SCHl_TAG MKTAG('S', 'C', 'H', 'l')
+#define SEAD_TAG MKTAG('S', 'E', 'A', 'D') /* Sxxx header */
+#define SNDC_TAG MKTAG('S', 'N', 'D', 'C') /* Sxxx data */
+#define SEND_TAG MKTAG('S', 'E', 'N', 'D') /* Sxxx end */
+#define ISNh_TAG MKTAG('1', 'S', 'N', 'h') /* 1SNx header */
+#define EACS_TAG MKTAG('E', 'A', 'C', 'S')
+#define ISNd_TAG MKTAG('1', 'S', 'N', 'd') /* 1SNx data */
+#define ISNe_TAG MKTAG('1', 'S', 'N', 'e') /* 1SNx end */
#define PT00_TAG MKTAG('P', 'T', 0x0, 0x0)
#define GSTR_TAG MKTAG('G', 'S', 'T', 'R')
#define SCDl_TAG MKTAG('S', 'C', 'D', 'l')
#define SCEl_TAG MKTAG('S', 'C', 'E', 'l')
+#define kVGT_TAG MKTAG('k', 'V', 'G', 'T') /* TGV i-frame */
+#define MADk_TAG MKTAG('M', 'A', 'D', 'k') /* MAD i-frame */
+#define MPCh_TAG MKTAG('M', 'P', 'C', 'h') /* MPEG2 */
#define MVhd_TAG MKTAG('M', 'V', 'h', 'd')
#define MV0K_TAG MKTAG('M', 'V', '0', 'K')
#define MV0F_TAG MKTAG('M', 'V', '0', 'F')
+#define MVIh_TAG MKTAG('M', 'V', 'I', 'h') /* CMV header */
typedef struct EaDemuxContext {
int big_endian;
- int video_codec;
+ enum CodecID video_codec;
AVRational time_base;
int video_stream_index;
- int audio_codec;
+ enum CodecID audio_codec;
int audio_stream_index;
int audio_frame_counter;
{
int inHeader = 1;
EaDemuxContext *ea = s->priv_data;
- ByteIOContext *pb = &s->pb;
- int compression_type = -1, revision = -1;
+ ByteIOContext *pb = s->pb;
+ int compression_type = -1, revision = -1, revision2 = -1;
ea->bytes = 2;
ea->sample_rate = -1;
av_log (s, AV_LOG_INFO, "exited audio subheader\n");
inSubheader = 0;
break;
+ case 0xA0:
+ revision2 = read_arbitary(pb);
+ av_log (s, AV_LOG_INFO, "revision2 (element 0xA0) set to 0x%08x\n", revision2);
+ break;
case 0xFF:
av_log (s, AV_LOG_INFO, "end of header block reached (within audio subheader)\n");
inSubheader = 0;
switch (compression_type) {
case 0: ea->audio_codec = CODEC_ID_PCM_S16LE; break;
case 7: ea->audio_codec = CODEC_ID_ADPCM_EA; break;
+ case -1:
+ switch (revision) {
+ case 1: ea->audio_codec = CODEC_ID_ADPCM_EA_R1; break;
+ case 2: ea->audio_codec = CODEC_ID_ADPCM_EA_R2; break;
+ case 3: ea->audio_codec = CODEC_ID_ADPCM_EA_R3; break;
+ case -1: break;
+ default:
+ av_log(s, AV_LOG_ERROR, "unsupported stream type; revision=%i\n", revision);
+ return 0;
+ }
+ switch (revision2) {
+ case 8: ea->audio_codec = CODEC_ID_PCM_S16LE_PLANAR; break;
+ default:
+ av_log(s, AV_LOG_ERROR, "unsupported stream type; revision2=%i\n", revision2);
+ return 0;
+ }
+ break;
default:
av_log(s, AV_LOG_ERROR, "unsupported stream type; compression_type=%i\n", compression_type);
return 0;
return 1;
}
+/*
+ * Process EACS sound header
+ * return 1 if success, 0 if invalid format, otherwise AVERROR_xxx
+ */
+static int process_audio_header_eacs(AVFormatContext *s)
+{
+ EaDemuxContext *ea = s->priv_data;
+ ByteIOContext *pb = s->pb;
+ int compression_type;
+
+ ea->sample_rate = ea->big_endian ? get_be32(pb) : get_le32(pb);
+ ea->bytes = get_byte(pb); /* 1=8-bit, 2=16-bit */
+ ea->num_channels = get_byte(pb);
+ compression_type = get_byte(pb);
+ url_fskip(pb, 13);
+
+ switch (compression_type) {
+ case 0:
+ switch (ea->bytes) {
+ case 1: ea->audio_codec = CODEC_ID_PCM_S8; break;
+ case 2: ea->audio_codec = CODEC_ID_PCM_S16LE; break;
+ }
+ break;
+ case 1: ea->audio_codec = CODEC_ID_PCM_MULAW; ea->bytes = 1; break;
+ case 2: ea->audio_codec = CODEC_ID_ADPCM_IMA_EA_EACS; break;
+ default:
+ av_log (s, AV_LOG_ERROR, "unsupported stream type; audio compression_type=%i\n", compression_type);
+ }
+
+ return 1;
+}
+
+/*
+ * Process SEAD sound header
+ * return 1 if success, 0 if invalid format, otherwise AVERROR_xxx
+ */
+static int process_audio_header_sead(AVFormatContext *s)
+{
+ EaDemuxContext *ea = s->priv_data;
+ ByteIOContext *pb = s->pb;
+
+ ea->sample_rate = get_le32(pb);
+ ea->bytes = get_le32(pb); /* 1=8-bit, 2=16-bit */
+ ea->num_channels = get_le32(pb);
+ ea->audio_codec = CODEC_ID_ADPCM_IMA_EA_SEAD;
+
+ return 1;
+}
+
static int process_video_header_vp6(AVFormatContext *s)
{
EaDemuxContext *ea = s->priv_data;
- ByteIOContext *pb = &s->pb;
+ ByteIOContext *pb = s->pb;
url_fskip(pb, 16);
ea->time_base.den = get_le32(pb);
static int process_ea_header(AVFormatContext *s) {
uint32_t blockid, size = 0;
EaDemuxContext *ea = s->priv_data;
- ByteIOContext *pb = &s->pb;
+ ByteIOContext *pb = s->pb;
int i;
for (i=0; i<5 && (!ea->audio_codec || !ea->video_codec); i++) {
size = bswap_32(size);
switch (blockid) {
+ case ISNh_TAG:
+ if (get_le32(pb) != EACS_TAG) {
+ av_log (s, AV_LOG_ERROR, "unknown 1SNh headerid\n");
+ return 0;
+ }
+ err = process_audio_header_eacs(s);
+ break;
+
case SCHl_TAG :
blockid = get_le32(pb);
if (blockid == GSTR_TAG) {
err = process_audio_header_elements(s);
break;
+ case SEAD_TAG:
+ err = process_audio_header_sead(s);
+ break;
+
case MVhd_TAG :
err = process_video_header_vp6(s);
break;
static int ea_probe(AVProbeData *p)
{
- uint32_t tag;
-
- tag = AV_RL32(&p->buf[0]);
- if (tag == SCHl_TAG || tag == MVhd_TAG)
+ switch (AV_RL32(&p->buf[0])) {
+ case ISNh_TAG:
+ case SCHl_TAG:
+ case SEAD_TAG:
+ case kVGT_TAG:
+ case MADk_TAG:
+ case MPCh_TAG:
+ case MVhd_TAG:
+ case MVIh_TAG:
return AVPROBE_SCORE_MAX;
-
+ }
return 0;
}
if (!process_ea_header(s))
return AVERROR(EIO);
- if (ea->time_base.num && ea->time_base.den) {
+ if (ea->video_codec) {
/* initialize the video decoder stream */
st = av_new_stream(s, 0);
if (!st)
}
if (ea->audio_codec) {
- /* initialize the audio decoder stream */
- st = av_new_stream(s, 0);
- if (!st)
- return AVERROR(ENOMEM);
- av_set_pts_info(st, 33, 1, ea->sample_rate);
- st->codec->codec_type = CODEC_TYPE_AUDIO;
- st->codec->codec_id = ea->audio_codec;
- st->codec->codec_tag = 0; /* no tag */
- st->codec->channels = ea->num_channels;
- st->codec->sample_rate = ea->sample_rate;
- st->codec->bits_per_sample = ea->bytes * 8;
- st->codec->bit_rate = st->codec->channels * st->codec->sample_rate *
- st->codec->bits_per_sample / 4;
- st->codec->block_align = st->codec->channels * st->codec->bits_per_sample;
-
- ea->audio_stream_index = st->index;
- ea->audio_frame_counter = 0;
+ /* initialize the audio decoder stream */
+ st = av_new_stream(s, 0);
+ if (!st)
+ return AVERROR(ENOMEM);
+ av_set_pts_info(st, 33, 1, ea->sample_rate);
+ st->codec->codec_type = CODEC_TYPE_AUDIO;
+ st->codec->codec_id = ea->audio_codec;
+ st->codec->codec_tag = 0; /* no tag */
+ st->codec->channels = ea->num_channels;
+ st->codec->sample_rate = ea->sample_rate;
+ st->codec->bits_per_sample = ea->bytes * 8;
+ st->codec->bit_rate = st->codec->channels * st->codec->sample_rate *
+ st->codec->bits_per_sample / 4;
+ st->codec->block_align = st->codec->channels*st->codec->bits_per_sample;
+ ea->audio_stream_index = st->index;
+ ea->audio_frame_counter = 0;
}
return 1;
AVPacket *pkt)
{
EaDemuxContext *ea = s->priv_data;
- ByteIOContext *pb = &s->pb;
+ ByteIOContext *pb = s->pb;
int ret = 0;
int packet_read = 0;
unsigned int chunk_type, chunk_size;
switch (chunk_type) {
/* audio data */
+ case ISNh_TAG:
+ /* header chunk also contains data; skip over the header portion*/
+ url_fskip(pb, 32);
+ chunk_size -= 32;
+ case ISNd_TAG:
case SCDl_TAG:
+ case SNDC_TAG:
+ if (!ea->audio_codec) {
+ url_fskip(pb, chunk_size);
+ break;
+ } else if (ea->audio_codec == CODEC_ID_PCM_S16LE_PLANAR) {
+ url_fskip(pb, 12); /* planar header */
+ chunk_size -= 12;
+ }
ret = av_get_packet(pb, pkt, chunk_size);
if (ret != chunk_size)
ret = AVERROR(EIO);
break;
/* ending tag */
+ case 0:
+ case ISNe_TAG:
case SCEl_TAG:
+ case SEND_TAG:
ret = AVERROR(EIO);
packet_read = 1;
break;
AVInputFormat ea_demuxer = {
"ea",
- "Electronic Arts Multimedia Format",
+ NULL_IF_CONFIG_SMALL("Electronic Arts Multimedia Format"),
sizeof(EaDemuxContext),
ea_probe,
ea_read_header,
projects / ffmpeg / blobdiff