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00033 #include <float.h>
00034 #include "libavutil/avstring.h"
00035 #include "libavutil/opt.h"
00036 #include "libavutil/imgutils.h"
00037 #include "libavformat/avformat.h"
00038 #include "avcodec.h"
00039 #include "avfilter.h"
00040
00041 typedef struct {
00042
00043 const AVClass *class;
00044 int64_t seek_point;
00045 double seek_point_d;
00046 char *format_name;
00047 char *file_name;
00048 int stream_index;
00049
00050 AVFormatContext *format_ctx;
00051 AVCodecContext *codec_ctx;
00052 int is_done;
00053 AVFrame *frame;
00054
00055
00056 int w, h;
00057 AVFilterBufferRef *picref;
00058
00059
00060 int bps;
00061 AVPacket pkt, pkt0;
00062 AVFilterBufferRef *samplesref;
00063 } MovieContext;
00064
00065 #define OFFSET(x) offsetof(MovieContext, x)
00066
00067 static const AVOption movie_options[]= {
00068 {"format_name", "set format name", OFFSET(format_name), AV_OPT_TYPE_STRING, {.str = 0}, CHAR_MIN, CHAR_MAX },
00069 {"f", "set format name", OFFSET(format_name), AV_OPT_TYPE_STRING, {.str = 0}, CHAR_MIN, CHAR_MAX },
00070 {"stream_index", "set stream index", OFFSET(stream_index), AV_OPT_TYPE_INT, {.dbl = -1}, -1, INT_MAX },
00071 {"si", "set stream index", OFFSET(stream_index), AV_OPT_TYPE_INT, {.dbl = -1}, -1, INT_MAX },
00072 {"seek_point", "set seekpoint (seconds)", OFFSET(seek_point_d), AV_OPT_TYPE_DOUBLE, {.dbl = 0}, 0, (INT64_MAX-1) / 1000000 },
00073 {"sp", "set seekpoint (seconds)", OFFSET(seek_point_d), AV_OPT_TYPE_DOUBLE, {.dbl = 0}, 0, (INT64_MAX-1) / 1000000 },
00074 {NULL},
00075 };
00076
00077 static const char *movie_get_name(void *ctx)
00078 {
00079 return "movie";
00080 }
00081
00082 static const AVClass movie_class = {
00083 "MovieContext",
00084 movie_get_name,
00085 movie_options
00086 };
00087
00088 static av_cold int movie_common_init(AVFilterContext *ctx, const char *args, void *opaque,
00089 enum AVMediaType type)
00090 {
00091 MovieContext *movie = ctx->priv;
00092 AVInputFormat *iformat = NULL;
00093 AVCodec *codec;
00094 int64_t timestamp;
00095 int ret;
00096
00097 movie->class = &movie_class;
00098 av_opt_set_defaults(movie);
00099
00100 if (args)
00101 movie->file_name = av_get_token(&args, ":");
00102 if (!movie->file_name || !*movie->file_name) {
00103 av_log(ctx, AV_LOG_ERROR, "No filename provided!\n");
00104 return AVERROR(EINVAL);
00105 }
00106
00107 if (*args++ == ':' && (ret = av_set_options_string(movie, args, "=", ":")) < 0) {
00108 av_log(ctx, AV_LOG_ERROR, "Error parsing options string: '%s'\n", args);
00109 return ret;
00110 }
00111
00112 movie->seek_point = movie->seek_point_d * 1000000 + 0.5;
00113
00114 av_register_all();
00115
00116
00117 iformat = movie->format_name ? av_find_input_format(movie->format_name) : NULL;
00118
00119 movie->format_ctx = NULL;
00120 if ((ret = avformat_open_input(&movie->format_ctx, movie->file_name, iformat, NULL)) < 0) {
00121 av_log(ctx, AV_LOG_ERROR,
00122 "Failed to avformat_open_input '%s'\n", movie->file_name);
00123 return ret;
00124 }
00125 if ((ret = avformat_find_stream_info(movie->format_ctx, NULL)) < 0)
00126 av_log(ctx, AV_LOG_WARNING, "Failed to find stream info\n");
00127
00128
00129 if (movie->seek_point > 0) {
00130 timestamp = movie->seek_point;
00131
00132 if (movie->format_ctx->start_time != AV_NOPTS_VALUE) {
00133 if (timestamp > INT64_MAX - movie->format_ctx->start_time) {
00134 av_log(ctx, AV_LOG_ERROR,
00135 "%s: seek value overflow with start_time:%"PRId64" seek_point:%"PRId64"\n",
00136 movie->file_name, movie->format_ctx->start_time, movie->seek_point);
00137 return AVERROR(EINVAL);
00138 }
00139 timestamp += movie->format_ctx->start_time;
00140 }
00141 if ((ret = av_seek_frame(movie->format_ctx, -1, timestamp, AVSEEK_FLAG_BACKWARD)) < 0) {
00142 av_log(ctx, AV_LOG_ERROR, "%s: could not seek to position %"PRId64"\n",
00143 movie->file_name, timestamp);
00144 return ret;
00145 }
00146 }
00147
00148
00149 if ((ret = av_find_best_stream(movie->format_ctx, type,
00150 movie->stream_index, -1, NULL, 0)) < 0) {
00151 av_log(ctx, AV_LOG_ERROR, "No %s stream with index '%d' found\n",
00152 av_get_media_type_string(type), movie->stream_index);
00153 return ret;
00154 }
00155 movie->stream_index = ret;
00156 movie->codec_ctx = movie->format_ctx->streams[movie->stream_index]->codec;
00157
00158
00159
00160
00161
00162 codec = avcodec_find_decoder(movie->codec_ctx->codec_id);
00163 if (!codec) {
00164 av_log(ctx, AV_LOG_ERROR, "Failed to find any codec\n");
00165 return AVERROR(EINVAL);
00166 }
00167
00168 if ((ret = avcodec_open2(movie->codec_ctx, codec, NULL)) < 0) {
00169 av_log(ctx, AV_LOG_ERROR, "Failed to open codec\n");
00170 return ret;
00171 }
00172
00173 av_log(ctx, AV_LOG_INFO, "seek_point:%"PRIi64" format_name:%s file_name:%s stream_index:%d\n",
00174 movie->seek_point, movie->format_name, movie->file_name,
00175 movie->stream_index);
00176
00177 if (!(movie->frame = avcodec_alloc_frame()) ) {
00178 av_log(ctx, AV_LOG_ERROR, "Failed to alloc frame\n");
00179 return AVERROR(ENOMEM);
00180 }
00181
00182 return 0;
00183 }
00184
00185 static av_cold void movie_common_uninit(AVFilterContext *ctx)
00186 {
00187 MovieContext *movie = ctx->priv;
00188
00189 av_free(movie->file_name);
00190 av_free(movie->format_name);
00191 if (movie->codec_ctx)
00192 avcodec_close(movie->codec_ctx);
00193 if (movie->format_ctx)
00194 avformat_close_input(&movie->format_ctx);
00195
00196 avfilter_unref_buffer(movie->picref);
00197 av_freep(&movie->frame);
00198
00199 avfilter_unref_buffer(movie->samplesref);
00200 }
00201
00202 #if CONFIG_MOVIE_FILTER
00203
00204 static av_cold int movie_init(AVFilterContext *ctx, const char *args, void *opaque)
00205 {
00206 MovieContext *movie = ctx->priv;
00207 int ret;
00208
00209 if ((ret = movie_common_init(ctx, args, opaque, AVMEDIA_TYPE_VIDEO)) < 0)
00210 return ret;
00211
00212 movie->w = movie->codec_ctx->width;
00213 movie->h = movie->codec_ctx->height;
00214
00215 return 0;
00216 }
00217
00218 static int movie_query_formats(AVFilterContext *ctx)
00219 {
00220 MovieContext *movie = ctx->priv;
00221 enum PixelFormat pix_fmts[] = { movie->codec_ctx->pix_fmt, PIX_FMT_NONE };
00222
00223 avfilter_set_common_pixel_formats(ctx, avfilter_make_format_list(pix_fmts));
00224 return 0;
00225 }
00226
00227 static int movie_config_output_props(AVFilterLink *outlink)
00228 {
00229 MovieContext *movie = outlink->src->priv;
00230
00231 outlink->w = movie->w;
00232 outlink->h = movie->h;
00233 outlink->time_base = movie->format_ctx->streams[movie->stream_index]->time_base;
00234
00235 return 0;
00236 }
00237
00238 static int movie_get_frame(AVFilterLink *outlink)
00239 {
00240 MovieContext *movie = outlink->src->priv;
00241 AVPacket pkt;
00242 int ret, frame_decoded;
00243 AVStream *st = movie->format_ctx->streams[movie->stream_index];
00244
00245 if (movie->is_done == 1)
00246 return 0;
00247
00248 while ((ret = av_read_frame(movie->format_ctx, &pkt)) >= 0) {
00249
00250 if (pkt.stream_index == movie->stream_index) {
00251 avcodec_decode_video2(movie->codec_ctx, movie->frame, &frame_decoded, &pkt);
00252
00253 if (frame_decoded) {
00254
00255 movie->picref = avfilter_get_video_buffer(outlink, AV_PERM_WRITE | AV_PERM_PRESERVE |
00256 AV_PERM_REUSE2, outlink->w, outlink->h);
00257 av_image_copy(movie->picref->data, movie->picref->linesize,
00258 (void*)movie->frame->data, movie->frame->linesize,
00259 movie->picref->format, outlink->w, outlink->h);
00260 avfilter_copy_frame_props(movie->picref, movie->frame);
00261
00262
00263
00264
00265 movie->picref->pts = movie->frame->pkt_pts == AV_NOPTS_VALUE ?
00266 movie->frame->pkt_dts : movie->frame->pkt_pts;
00267
00268 if (!movie->frame->sample_aspect_ratio.num)
00269 movie->picref->video->sample_aspect_ratio = st->sample_aspect_ratio;
00270 av_dlog(outlink->src,
00271 "movie_get_frame(): file:'%s' pts:%"PRId64" time:%lf pos:%"PRId64" aspect:%d/%d\n",
00272 movie->file_name, movie->picref->pts,
00273 (double)movie->picref->pts * av_q2d(st->time_base),
00274 movie->picref->pos,
00275 movie->picref->video->sample_aspect_ratio.num,
00276 movie->picref->video->sample_aspect_ratio.den);
00277
00278 av_free_packet(&pkt);
00279
00280 return 0;
00281 }
00282 }
00283
00284 av_free_packet(&pkt);
00285 }
00286
00287
00288
00289 if (ret == AVERROR_EOF)
00290 movie->is_done = 1;
00291 return ret;
00292 }
00293
00294 static int movie_request_frame(AVFilterLink *outlink)
00295 {
00296 AVFilterBufferRef *outpicref;
00297 MovieContext *movie = outlink->src->priv;
00298 int ret;
00299
00300 if (movie->is_done)
00301 return AVERROR_EOF;
00302 if ((ret = movie_get_frame(outlink)) < 0)
00303 return ret;
00304
00305 outpicref = avfilter_ref_buffer(movie->picref, ~0);
00306 avfilter_start_frame(outlink, outpicref);
00307 avfilter_draw_slice(outlink, 0, outlink->h, 1);
00308 avfilter_end_frame(outlink);
00309 avfilter_unref_buffer(movie->picref);
00310 movie->picref = NULL;
00311
00312 return 0;
00313 }
00314
00315 AVFilter avfilter_vsrc_movie = {
00316 .name = "movie",
00317 .description = NULL_IF_CONFIG_SMALL("Read from a movie source."),
00318 .priv_size = sizeof(MovieContext),
00319 .init = movie_init,
00320 .uninit = movie_common_uninit,
00321 .query_formats = movie_query_formats,
00322
00323 .inputs = (const AVFilterPad[]) {{ .name = NULL }},
00324 .outputs = (const AVFilterPad[]) {{ .name = "default",
00325 .type = AVMEDIA_TYPE_VIDEO,
00326 .request_frame = movie_request_frame,
00327 .config_props = movie_config_output_props, },
00328 { .name = NULL}},
00329 };
00330
00331 #endif
00332
00333 #if CONFIG_AMOVIE_FILTER
00334
00335 static av_cold int amovie_init(AVFilterContext *ctx, const char *args, void *opaque)
00336 {
00337 MovieContext *movie = ctx->priv;
00338 int ret;
00339
00340 if ((ret = movie_common_init(ctx, args, opaque, AVMEDIA_TYPE_AUDIO)) < 0)
00341 return ret;
00342
00343 movie->bps = av_get_bytes_per_sample(movie->codec_ctx->sample_fmt);
00344 return 0;
00345 }
00346
00347 static int amovie_query_formats(AVFilterContext *ctx)
00348 {
00349 MovieContext *movie = ctx->priv;
00350 AVCodecContext *c = movie->codec_ctx;
00351
00352 enum AVSampleFormat sample_fmts[] = { c->sample_fmt, -1 };
00353 int packing_fmts[] = { AVFILTER_PACKED, -1 };
00354 int64_t chlayouts[] = { c->channel_layout ? c->channel_layout :
00355 av_get_default_channel_layout(c->channels), -1 };
00356
00357 avfilter_set_common_sample_formats (ctx, avfilter_make_format_list(sample_fmts));
00358 avfilter_set_common_packing_formats(ctx, avfilter_make_format_list(packing_fmts));
00359 avfilter_set_common_channel_layouts(ctx, avfilter_make_format64_list(chlayouts));
00360
00361 return 0;
00362 }
00363
00364 static int amovie_config_output_props(AVFilterLink *outlink)
00365 {
00366 MovieContext *movie = outlink->src->priv;
00367 AVCodecContext *c = movie->codec_ctx;
00368
00369 outlink->sample_rate = c->sample_rate;
00370 outlink->time_base = movie->format_ctx->streams[movie->stream_index]->time_base;
00371
00372 return 0;
00373 }
00374
00375 static int amovie_get_samples(AVFilterLink *outlink)
00376 {
00377 MovieContext *movie = outlink->src->priv;
00378 AVPacket pkt;
00379 int ret, got_frame = 0;
00380
00381 if (!movie->pkt.size && movie->is_done == 1)
00382 return AVERROR_EOF;
00383
00384
00385 if (!movie->pkt.size) {
00386 while ((ret = av_read_frame(movie->format_ctx, &pkt)) >= 0) {
00387
00388 if (pkt.stream_index != movie->stream_index) {
00389 av_free_packet(&pkt);
00390 continue;
00391 } else {
00392 movie->pkt0 = movie->pkt = pkt;
00393 break;
00394 }
00395 }
00396
00397 if (ret == AVERROR_EOF) {
00398 movie->is_done = 1;
00399 return ret;
00400 }
00401 }
00402
00403
00404 avcodec_get_frame_defaults(movie->frame);
00405 ret = avcodec_decode_audio4(movie->codec_ctx, movie->frame, &got_frame, &movie->pkt);
00406 if (ret < 0) {
00407 movie->pkt.size = 0;
00408 return ret;
00409 }
00410 movie->pkt.data += ret;
00411 movie->pkt.size -= ret;
00412
00413
00414 if (got_frame) {
00415 int nb_samples = movie->frame->nb_samples;
00416 int data_size =
00417 av_samples_get_buffer_size(NULL, movie->codec_ctx->channels,
00418 nb_samples, movie->codec_ctx->sample_fmt, 1);
00419 if (data_size < 0)
00420 return data_size;
00421 movie->samplesref =
00422 avfilter_get_audio_buffer(outlink, AV_PERM_WRITE, nb_samples);
00423 memcpy(movie->samplesref->data[0], movie->frame->data[0], data_size);
00424 movie->samplesref->pts = movie->pkt.pts;
00425 movie->samplesref->pos = movie->pkt.pos;
00426 movie->samplesref->audio->sample_rate = movie->codec_ctx->sample_rate;
00427 }
00428
00429
00430 if (movie->pkt.size <= 0)
00431 av_free_packet(&movie->pkt0);
00432
00433 return 0;
00434 }
00435
00436 static int amovie_request_frame(AVFilterLink *outlink)
00437 {
00438 MovieContext *movie = outlink->src->priv;
00439 int ret;
00440
00441 if (movie->is_done)
00442 return AVERROR_EOF;
00443 do {
00444 if ((ret = amovie_get_samples(outlink)) < 0)
00445 return ret;
00446 } while (!movie->samplesref);
00447
00448 avfilter_filter_samples(outlink, avfilter_ref_buffer(movie->samplesref, ~0));
00449 avfilter_unref_buffer(movie->samplesref);
00450 movie->samplesref = NULL;
00451
00452 return 0;
00453 }
00454
00455 AVFilter avfilter_asrc_amovie = {
00456 .name = "amovie",
00457 .description = NULL_IF_CONFIG_SMALL("Read audio from a movie source."),
00458 .priv_size = sizeof(MovieContext),
00459 .init = amovie_init,
00460 .uninit = movie_common_uninit,
00461 .query_formats = amovie_query_formats,
00462
00463 .inputs = (const AVFilterPad[]) {{ .name = NULL }},
00464 .outputs = (const AVFilterPad[]) {{ .name = "default",
00465 .type = AVMEDIA_TYPE_AUDIO,
00466 .request_frame = amovie_request_frame,
00467 .config_props = amovie_config_output_props, },
00468 { .name = NULL}},
00469 };
00470
00471 #endif