55
63
* @param vst video stream of which to change parameters
56
64
* @param ast video stream of which to change parameters
57
65
* @param myth set if this is a MythTVVideo format file
58
* @return 1 if all required codec data was found
66
* @return 0 or AVERROR code
60
68
static int get_codec_data(AVIOContext *pb, AVStream *vst,
61
AVStream *ast, int myth) {
69
AVStream *ast, int myth)
62
71
nuv_frametype frametype;
64
74
return 1; // no codec data needed
65
75
while (!pb->eof_reached) {
67
78
frametype = avio_r8(pb);
68
79
switch (frametype) {
70
subtype = avio_r8(pb);
72
size = PKTSIZE(avio_rl32(pb));
73
if (vst && subtype == 'R') {
74
vst->codec->extradata_size = size;
75
vst->codec->extradata = av_malloc(size);
76
avio_read(pb, vst->codec->extradata, size);
81
subtype = avio_r8(pb);
83
size = PKTSIZE(avio_rl32(pb));
84
if (vst && subtype == 'R') {
85
if (vst->codec->extradata) {
86
av_freep(&vst->codec->extradata);
87
vst->codec->extradata_size = 0;
89
vst->codec->extradata = av_malloc(size);
90
if (!vst->codec->extradata)
91
return AVERROR(ENOMEM);
92
vst->codec->extradata_size = size;
93
avio_read(pb, vst->codec->extradata, size);
101
size = PKTSIZE(avio_rl32(pb));
84
size = PKTSIZE(avio_rl32(pb));
87
avio_rl32(pb); // version
89
vst->codec->codec_tag = avio_rl32(pb);
90
vst->codec->codec_id =
91
ff_codec_get_id(ff_codec_bmp_tags, vst->codec->codec_tag);
92
if (vst->codec->codec_tag == MKTAG('R', 'J', 'P', 'G'))
93
vst->codec->codec_id = CODEC_ID_NUV;
98
ast->codec->codec_tag = avio_rl32(pb);
99
ast->codec->sample_rate = avio_rl32(pb);
100
ast->codec->bits_per_coded_sample = avio_rl32(pb);
101
ast->codec->channels = avio_rl32(pb);
102
ast->codec->codec_id =
103
ff_wav_codec_get_id(ast->codec->codec_tag,
104
avio_rl32(pb); // version
106
vst->codec->codec_tag = avio_rl32(pb);
107
vst->codec->codec_id =
108
ff_codec_get_id(ff_codec_bmp_tags, vst->codec->codec_tag);
109
if (vst->codec->codec_tag == MKTAG('R', 'J', 'P', 'G'))
110
vst->codec->codec_id = AV_CODEC_ID_NUV;
117
ast->codec->codec_tag = avio_rl32(pb);
118
ast->codec->sample_rate = avio_rl32(pb);
119
ast->codec->bits_per_coded_sample = avio_rl32(pb);
120
ast->codec->channels = avio_rl32(pb);
121
ast->codec->channel_layout = 0;
123
id = ff_wav_codec_get_id(ast->codec->codec_tag,
104
124
ast->codec->bits_per_coded_sample);
105
ast->need_parsing = AVSTREAM_PARSE_FULL;
107
avio_skip(pb, 4 * 4);
117
size = PKTSIZE(avio_rl32(pb));
125
if (id == AV_CODEC_ID_NONE) {
126
id = ff_codec_get_id(nuv_audio_tags, ast->codec->codec_tag);
127
if (id == AV_CODEC_ID_PCM_S16LE)
128
id = ff_get_pcm_codec_id(ast->codec->bits_per_coded_sample,
131
ast->codec->codec_id = id;
133
ast->need_parsing = AVSTREAM_PARSE_FULL;
135
avio_skip(pb, 4 * 4);
145
size = PKTSIZE(avio_rl32(pb));
120
148
avio_skip(pb, size);
125
static int nuv_header(AVFormatContext *s, AVFormatParameters *ap) {
154
static int nuv_header(AVFormatContext *s)
126
156
NUVContext *ctx = s->priv_data;
127
157
AVIOContext *pb = s->pb;
128
158
char id_string[12];
129
159
double aspect, fps;
130
int is_mythtv, width, height, v_packs, a_packs;
160
int is_mythtv, width, height, v_packs, a_packs, ret;
132
161
AVStream *vst = NULL, *ast = NULL;
133
163
avio_read(pb, id_string, 12);
134
164
is_mythtv = !memcmp(id_string, "MythTVVideo", 12);
135
avio_skip(pb, 5); // version string
136
avio_skip(pb, 3); // padding
137
width = avio_rl32(pb);
165
avio_skip(pb, 5); // version string
166
avio_skip(pb, 3); // padding
167
width = avio_rl32(pb);
138
168
height = avio_rl32(pb);
139
avio_rl32(pb); // unused, "desiredwidth"
140
avio_rl32(pb); // unused, "desiredheight"
141
avio_r8(pb); // 'P' == progressive, 'I' == interlaced
142
avio_skip(pb, 3); // padding
169
avio_rl32(pb); // unused, "desiredwidth"
170
avio_rl32(pb); // unused, "desiredheight"
171
avio_r8(pb); // 'P' == progressive, 'I' == interlaced
172
avio_skip(pb, 3); // padding
143
173
aspect = av_int2double(avio_rl64(pb));
144
174
if (aspect > 0.9999 && aspect < 1.0001)
145
175
aspect = 4.0 / 3.0;
153
183
avio_rl32(pb); // keyframe distance (?)
156
ctx->v_id = stream_nr++;
157
186
vst = avformat_new_stream(s, NULL);
159
188
return AVERROR(ENOMEM);
160
vst->codec->codec_type = AVMEDIA_TYPE_VIDEO;
161
vst->codec->codec_id = CODEC_ID_NUV;
162
vst->codec->width = width;
163
vst->codec->height = height;
189
ctx->v_id = vst->index;
191
vst->codec->codec_type = AVMEDIA_TYPE_VIDEO;
192
vst->codec->codec_id = AV_CODEC_ID_NUV;
193
vst->codec->width = width;
194
vst->codec->height = height;
164
195
vst->codec->bits_per_coded_sample = 10;
165
vst->sample_aspect_ratio = av_d2q(aspect * height / width, 10000);
166
vst->r_frame_rate = av_d2q(fps, 60000);
196
vst->sample_aspect_ratio = av_d2q(aspect * height / width,
198
#if FF_API_R_FRAME_RATE
201
vst->avg_frame_rate = av_d2q(fps, 60000);
167
202
avpriv_set_pts_info(vst, 32, 1, 1000);
172
ctx->a_id = stream_nr++;
173
207
ast = avformat_new_stream(s, NULL);
175
209
return AVERROR(ENOMEM);
176
ast->codec->codec_type = AVMEDIA_TYPE_AUDIO;
177
ast->codec->codec_id = CODEC_ID_PCM_S16LE;
178
ast->codec->channels = 2;
179
ast->codec->sample_rate = 44100;
180
ast->codec->bit_rate = 2 * 2 * 44100 * 8;
181
ast->codec->block_align = 2 * 2;
210
ctx->a_id = ast->index;
212
ast->codec->codec_type = AVMEDIA_TYPE_AUDIO;
213
ast->codec->codec_id = AV_CODEC_ID_PCM_S16LE;
214
ast->codec->channels = 2;
215
ast->codec->channel_layout = AV_CH_LAYOUT_STEREO;
216
ast->codec->sample_rate = 44100;
217
ast->codec->bit_rate = 2 * 2 * 44100 * 8;
218
ast->codec->block_align = 2 * 2;
182
219
ast->codec->bits_per_coded_sample = 16;
183
220
avpriv_set_pts_info(ast, 32, 1, 1000);
187
get_codec_data(pb, vst, ast, is_mythtv);
188
ctx->rtjpg_video = vst && vst->codec->codec_id == CODEC_ID_NUV;
224
if ((ret = get_codec_data(pb, vst, ast, is_mythtv)) < 0)
227
ctx->rtjpg_video = vst && vst->codec->codec_id == AV_CODEC_ID_NUV;
192
232
#define HDRSIZE 12
194
static int nuv_packet(AVFormatContext *s, AVPacket *pkt) {
234
static int nuv_packet(AVFormatContext *s, AVPacket *pkt)
195
236
NUVContext *ctx = s->priv_data;
196
237
AVIOContext *pb = s->pb;
197
238
uint8_t hdr[HDRSIZE];
198
239
nuv_frametype frametype;
200
242
while (!pb->eof_reached) {
201
243
int copyhdrsize = ctx->rtjpg_video ? HDRSIZE : 0;
202
uint64_t pos = avio_tell(pb);
244
uint64_t pos = avio_tell(pb);
203
246
ret = avio_read(pb, hdr, HDRSIZE);
204
247
if (ret < HDRSIZE)
205
248
return ret < 0 ? ret : AVERROR(EIO);
206
250
frametype = hdr[0];
207
size = PKTSIZE(AV_RL32(&hdr[8]));
251
size = PKTSIZE(AV_RL32(&hdr[8]));
208
253
switch (frametype) {
210
if (!ctx->rtjpg_video) {
216
av_log(s, AV_LOG_ERROR, "Video packet in file without video stream!\n");
220
ret = av_new_packet(pkt, copyhdrsize + size);
223
// HACK: we have no idea if it is a keyframe,
224
// but if we mark none seeking will not work at all.
225
pkt->flags |= AV_PKT_FLAG_KEY;
227
pkt->pts = AV_RL32(&hdr[4]);
228
pkt->stream_index = ctx->v_id;
229
memcpy(pkt->data, hdr, copyhdrsize);
230
ret = avio_read(pb, pkt->data + copyhdrsize, size);
236
av_shrink_packet(pkt, copyhdrsize + ret);
240
av_log(s, AV_LOG_ERROR, "Audio packet in file without audio stream!\n");
244
ret = av_get_packet(pb, pkt, size);
245
pkt->flags |= AV_PKT_FLAG_KEY;
247
pkt->pts = AV_RL32(&hdr[4]);
248
pkt->stream_index = ctx->a_id;
249
if (ret < 0) return ret;
252
// contains no data, size value is invalid
255
if (!ctx->rtjpg_video) {
261
av_log(s, AV_LOG_ERROR, "Video packet in file without video stream!\n");
265
ret = av_new_packet(pkt, copyhdrsize + size);
268
// HACK: we have no idea if it is a keyframe,
269
// but if we mark none seeking will not work at all.
270
pkt->flags |= AV_PKT_FLAG_KEY;
272
pkt->pts = AV_RL32(&hdr[4]);
273
pkt->stream_index = ctx->v_id;
274
memcpy(pkt->data, hdr, copyhdrsize);
275
ret = avio_read(pb, pkt->data + copyhdrsize, size);
281
av_shrink_packet(pkt, copyhdrsize + ret);
285
av_log(s, AV_LOG_ERROR, "Audio packet in file without audio stream!\n");
289
ret = av_get_packet(pb, pkt, size);
290
pkt->flags |= AV_PKT_FLAG_KEY;
292
pkt->pts = AV_RL32(&hdr[4]);
293
pkt->stream_index = ctx->a_id;
298
// contains no data, size value is invalid
259
306
return AVERROR(EIO);
262
309
AVInputFormat ff_nuv_demuxer = {
264
.long_name = NULL_IF_CONFIG_SMALL("NuppelVideo format"),
311
.long_name = NULL_IF_CONFIG_SMALL("NuppelVideo"),
265
312
.priv_data_size = sizeof(NUVContext),
266
313
.read_probe = nuv_probe,
267
314
.read_header = nuv_header,
268
315
.read_packet = nuv_packet,
269
.flags = AVFMT_GENERIC_INDEX,
316
.flags = AVFMT_GENERIC_INDEX,