| 1 | /* |
| 2 | * Copyright (c) 2010 Stefano Sabatini |
| 3 | * Copyright (c) 2008 Victor Paesa |
| 4 | * |
| 5 | * This file is part of FFmpeg. |
| 6 | * |
| 7 | * FFmpeg is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU Lesser General Public |
| 9 | * License as published by the Free Software Foundation; either |
| 10 | * version 2.1 of the License, or (at your option) any later version. |
| 11 | * |
| 12 | * FFmpeg is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 15 | * Lesser General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU Lesser General Public |
| 18 | * License along with FFmpeg; if not, write to the Free Software |
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 20 | */ |
| 21 | |
| 22 | /** |
| 23 | * @file |
| 24 | * movie video source |
| 25 | * |
| 26 | * @todo use direct rendering (no allocation of a new frame) |
| 27 | * @todo support a PTS correction mechanism |
| 28 | */ |
| 29 | |
| 30 | #include <float.h> |
| 31 | #include <stdint.h> |
| 32 | |
| 33 | #include "libavutil/attributes.h" |
| 34 | #include "libavutil/avstring.h" |
| 35 | #include "libavutil/avassert.h" |
| 36 | #include "libavutil/opt.h" |
| 37 | #include "libavutil/imgutils.h" |
| 38 | #include "libavutil/timestamp.h" |
| 39 | #include "libavformat/avformat.h" |
| 40 | #include "audio.h" |
| 41 | #include "avcodec.h" |
| 42 | #include "avfilter.h" |
| 43 | #include "formats.h" |
| 44 | #include "internal.h" |
| 45 | #include "video.h" |
| 46 | |
| 47 | typedef struct MovieStream { |
| 48 | AVStream *st; |
| 49 | int done; |
| 50 | } MovieStream; |
| 51 | |
| 52 | typedef struct MovieContext { |
| 53 | /* common A/V fields */ |
| 54 | const AVClass *class; |
| 55 | int64_t seek_point; ///< seekpoint in microseconds |
| 56 | double seek_point_d; |
| 57 | char *format_name; |
| 58 | char *file_name; |
| 59 | char *stream_specs; /**< user-provided list of streams, separated by + */ |
| 60 | int stream_index; /**< for compatibility */ |
| 61 | int loop_count; |
| 62 | |
| 63 | AVFormatContext *format_ctx; |
| 64 | int eof; |
| 65 | AVPacket pkt, pkt0; |
| 66 | |
| 67 | int max_stream_index; /**< max stream # actually used for output */ |
| 68 | MovieStream *st; /**< array of all streams, one per output */ |
| 69 | int *out_index; /**< stream number -> output number map, or -1 */ |
| 70 | } MovieContext; |
| 71 | |
| 72 | #define OFFSET(x) offsetof(MovieContext, x) |
| 73 | #define FLAGS AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_VIDEO_PARAM |
| 74 | |
| 75 | static const AVOption movie_options[]= { |
| 76 | { "filename", NULL, OFFSET(file_name), AV_OPT_TYPE_STRING, .flags = FLAGS }, |
| 77 | { "format_name", "set format name", OFFSET(format_name), AV_OPT_TYPE_STRING, .flags = FLAGS }, |
| 78 | { "f", "set format name", OFFSET(format_name), AV_OPT_TYPE_STRING, .flags = FLAGS }, |
| 79 | { "stream_index", "set stream index", OFFSET(stream_index), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, FLAGS }, |
| 80 | { "si", "set stream index", OFFSET(stream_index), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, FLAGS }, |
| 81 | { "seek_point", "set seekpoint (seconds)", OFFSET(seek_point_d), AV_OPT_TYPE_DOUBLE, { .dbl = 0 }, 0, (INT64_MAX-1) / 1000000, FLAGS }, |
| 82 | { "sp", "set seekpoint (seconds)", OFFSET(seek_point_d), AV_OPT_TYPE_DOUBLE, { .dbl = 0 }, 0, (INT64_MAX-1) / 1000000, FLAGS }, |
| 83 | { "streams", "set streams", OFFSET(stream_specs), AV_OPT_TYPE_STRING, {.str = 0}, CHAR_MAX, CHAR_MAX, FLAGS }, |
| 84 | { "s", "set streams", OFFSET(stream_specs), AV_OPT_TYPE_STRING, {.str = 0}, CHAR_MAX, CHAR_MAX, FLAGS }, |
| 85 | { "loop", "set loop count", OFFSET(loop_count), AV_OPT_TYPE_INT, {.i64 = 1}, 0, INT_MAX, FLAGS }, |
| 86 | { NULL }, |
| 87 | }; |
| 88 | |
| 89 | static int movie_config_output_props(AVFilterLink *outlink); |
| 90 | static int movie_request_frame(AVFilterLink *outlink); |
| 91 | |
| 92 | static AVStream *find_stream(void *log, AVFormatContext *avf, const char *spec) |
| 93 | { |
| 94 | int i, ret, already = 0, stream_id = -1; |
| 95 | char type_char[2], dummy; |
| 96 | AVStream *found = NULL; |
| 97 | enum AVMediaType type; |
| 98 | |
| 99 | ret = sscanf(spec, "d%1[av]%d%c", type_char, &stream_id, &dummy); |
| 100 | if (ret >= 1 && ret <= 2) { |
| 101 | type = type_char[0] == 'v' ? AVMEDIA_TYPE_VIDEO : AVMEDIA_TYPE_AUDIO; |
| 102 | ret = av_find_best_stream(avf, type, stream_id, -1, NULL, 0); |
| 103 | if (ret < 0) { |
| 104 | av_log(log, AV_LOG_ERROR, "No %s stream with index '%d' found\n", |
| 105 | av_get_media_type_string(type), stream_id); |
| 106 | return NULL; |
| 107 | } |
| 108 | return avf->streams[ret]; |
| 109 | } |
| 110 | for (i = 0; i < avf->nb_streams; i++) { |
| 111 | ret = avformat_match_stream_specifier(avf, avf->streams[i], spec); |
| 112 | if (ret < 0) { |
| 113 | av_log(log, AV_LOG_ERROR, |
| 114 | "Invalid stream specifier \"%s\"\n", spec); |
| 115 | return NULL; |
| 116 | } |
| 117 | if (!ret) |
| 118 | continue; |
| 119 | if (avf->streams[i]->discard != AVDISCARD_ALL) { |
| 120 | already++; |
| 121 | continue; |
| 122 | } |
| 123 | if (found) { |
| 124 | av_log(log, AV_LOG_WARNING, |
| 125 | "Ambiguous stream specifier \"%s\", using #%d\n", spec, i); |
| 126 | break; |
| 127 | } |
| 128 | found = avf->streams[i]; |
| 129 | } |
| 130 | if (!found) { |
| 131 | av_log(log, AV_LOG_WARNING, "Stream specifier \"%s\" %s\n", spec, |
| 132 | already ? "matched only already used streams" : |
| 133 | "did not match any stream"); |
| 134 | return NULL; |
| 135 | } |
| 136 | if (found->codec->codec_type != AVMEDIA_TYPE_VIDEO && |
| 137 | found->codec->codec_type != AVMEDIA_TYPE_AUDIO) { |
| 138 | av_log(log, AV_LOG_ERROR, "Stream specifier \"%s\" matched a %s stream," |
| 139 | "currently unsupported by libavfilter\n", spec, |
| 140 | av_get_media_type_string(found->codec->codec_type)); |
| 141 | return NULL; |
| 142 | } |
| 143 | return found; |
| 144 | } |
| 145 | |
| 146 | static int open_stream(void *log, MovieStream *st) |
| 147 | { |
| 148 | AVCodec *codec; |
| 149 | int ret; |
| 150 | |
| 151 | codec = avcodec_find_decoder(st->st->codec->codec_id); |
| 152 | if (!codec) { |
| 153 | av_log(log, AV_LOG_ERROR, "Failed to find any codec\n"); |
| 154 | return AVERROR(EINVAL); |
| 155 | } |
| 156 | |
| 157 | st->st->codec->refcounted_frames = 1; |
| 158 | |
| 159 | if ((ret = avcodec_open2(st->st->codec, codec, NULL)) < 0) { |
| 160 | av_log(log, AV_LOG_ERROR, "Failed to open codec\n"); |
| 161 | return ret; |
| 162 | } |
| 163 | |
| 164 | return 0; |
| 165 | } |
| 166 | |
| 167 | static int guess_channel_layout(MovieStream *st, int st_index, void *log_ctx) |
| 168 | { |
| 169 | AVCodecContext *dec_ctx = st->st->codec; |
| 170 | char buf[256]; |
| 171 | int64_t chl = av_get_default_channel_layout(dec_ctx->channels); |
| 172 | |
| 173 | if (!chl) { |
| 174 | av_log(log_ctx, AV_LOG_ERROR, |
| 175 | "Channel layout is not set in stream %d, and could not " |
| 176 | "be guessed from the number of channels (%d)\n", |
| 177 | st_index, dec_ctx->channels); |
| 178 | return AVERROR(EINVAL); |
| 179 | } |
| 180 | |
| 181 | av_get_channel_layout_string(buf, sizeof(buf), dec_ctx->channels, chl); |
| 182 | av_log(log_ctx, AV_LOG_WARNING, |
| 183 | "Channel layout is not set in output stream %d, " |
| 184 | "guessed channel layout is '%s'\n", |
| 185 | st_index, buf); |
| 186 | dec_ctx->channel_layout = chl; |
| 187 | return 0; |
| 188 | } |
| 189 | |
| 190 | static av_cold int movie_common_init(AVFilterContext *ctx) |
| 191 | { |
| 192 | MovieContext *movie = ctx->priv; |
| 193 | AVInputFormat *iformat = NULL; |
| 194 | int64_t timestamp; |
| 195 | int nb_streams = 1, ret, i; |
| 196 | char default_streams[16], *stream_specs, *spec, *cursor; |
| 197 | char name[16]; |
| 198 | AVStream *st; |
| 199 | |
| 200 | if (!movie->file_name) { |
| 201 | av_log(ctx, AV_LOG_ERROR, "No filename provided!\n"); |
| 202 | return AVERROR(EINVAL); |
| 203 | } |
| 204 | |
| 205 | movie->seek_point = movie->seek_point_d * 1000000 + 0.5; |
| 206 | |
| 207 | stream_specs = movie->stream_specs; |
| 208 | if (!stream_specs) { |
| 209 | snprintf(default_streams, sizeof(default_streams), "d%c%d", |
| 210 | !strcmp(ctx->filter->name, "amovie") ? 'a' : 'v', |
| 211 | movie->stream_index); |
| 212 | stream_specs = default_streams; |
| 213 | } |
| 214 | for (cursor = stream_specs; *cursor; cursor++) |
| 215 | if (*cursor == '+') |
| 216 | nb_streams++; |
| 217 | |
| 218 | if (movie->loop_count != 1 && nb_streams != 1) { |
| 219 | av_log(ctx, AV_LOG_ERROR, |
| 220 | "Loop with several streams is currently unsupported\n"); |
| 221 | return AVERROR_PATCHWELCOME; |
| 222 | } |
| 223 | |
| 224 | av_register_all(); |
| 225 | |
| 226 | // Try to find the movie format (container) |
| 227 | iformat = movie->format_name ? av_find_input_format(movie->format_name) : NULL; |
| 228 | |
| 229 | movie->format_ctx = NULL; |
| 230 | if ((ret = avformat_open_input(&movie->format_ctx, movie->file_name, iformat, NULL)) < 0) { |
| 231 | av_log(ctx, AV_LOG_ERROR, |
| 232 | "Failed to avformat_open_input '%s'\n", movie->file_name); |
| 233 | return ret; |
| 234 | } |
| 235 | if ((ret = avformat_find_stream_info(movie->format_ctx, NULL)) < 0) |
| 236 | av_log(ctx, AV_LOG_WARNING, "Failed to find stream info\n"); |
| 237 | |
| 238 | // if seeking requested, we execute it |
| 239 | if (movie->seek_point > 0) { |
| 240 | timestamp = movie->seek_point; |
| 241 | // add the stream start time, should it exist |
| 242 | if (movie->format_ctx->start_time != AV_NOPTS_VALUE) { |
| 243 | if (timestamp > INT64_MAX - movie->format_ctx->start_time) { |
| 244 | av_log(ctx, AV_LOG_ERROR, |
| 245 | "%s: seek value overflow with start_time:%"PRId64" seek_point:%"PRId64"\n", |
| 246 | movie->file_name, movie->format_ctx->start_time, movie->seek_point); |
| 247 | return AVERROR(EINVAL); |
| 248 | } |
| 249 | timestamp += movie->format_ctx->start_time; |
| 250 | } |
| 251 | if ((ret = av_seek_frame(movie->format_ctx, -1, timestamp, AVSEEK_FLAG_BACKWARD)) < 0) { |
| 252 | av_log(ctx, AV_LOG_ERROR, "%s: could not seek to position %"PRId64"\n", |
| 253 | movie->file_name, timestamp); |
| 254 | return ret; |
| 255 | } |
| 256 | } |
| 257 | |
| 258 | for (i = 0; i < movie->format_ctx->nb_streams; i++) |
| 259 | movie->format_ctx->streams[i]->discard = AVDISCARD_ALL; |
| 260 | |
| 261 | movie->st = av_calloc(nb_streams, sizeof(*movie->st)); |
| 262 | if (!movie->st) |
| 263 | return AVERROR(ENOMEM); |
| 264 | |
| 265 | for (i = 0; i < nb_streams; i++) { |
| 266 | spec = av_strtok(stream_specs, "+", &cursor); |
| 267 | if (!spec) |
| 268 | return AVERROR_BUG; |
| 269 | stream_specs = NULL; /* for next strtok */ |
| 270 | st = find_stream(ctx, movie->format_ctx, spec); |
| 271 | if (!st) |
| 272 | return AVERROR(EINVAL); |
| 273 | st->discard = AVDISCARD_DEFAULT; |
| 274 | movie->st[i].st = st; |
| 275 | movie->max_stream_index = FFMAX(movie->max_stream_index, st->index); |
| 276 | } |
| 277 | if (av_strtok(NULL, "+", &cursor)) |
| 278 | return AVERROR_BUG; |
| 279 | |
| 280 | movie->out_index = av_calloc(movie->max_stream_index + 1, |
| 281 | sizeof(*movie->out_index)); |
| 282 | if (!movie->out_index) |
| 283 | return AVERROR(ENOMEM); |
| 284 | for (i = 0; i <= movie->max_stream_index; i++) |
| 285 | movie->out_index[i] = -1; |
| 286 | for (i = 0; i < nb_streams; i++) { |
| 287 | AVFilterPad pad = { 0 }; |
| 288 | movie->out_index[movie->st[i].st->index] = i; |
| 289 | snprintf(name, sizeof(name), "out%d", i); |
| 290 | pad.type = movie->st[i].st->codec->codec_type; |
| 291 | pad.name = av_strdup(name); |
| 292 | pad.config_props = movie_config_output_props; |
| 293 | pad.request_frame = movie_request_frame; |
| 294 | ff_insert_outpad(ctx, i, &pad); |
| 295 | ret = open_stream(ctx, &movie->st[i]); |
| 296 | if (ret < 0) |
| 297 | return ret; |
| 298 | if ( movie->st[i].st->codec->codec->type == AVMEDIA_TYPE_AUDIO && |
| 299 | !movie->st[i].st->codec->channel_layout) { |
| 300 | ret = guess_channel_layout(&movie->st[i], i, ctx); |
| 301 | if (ret < 0) |
| 302 | return ret; |
| 303 | } |
| 304 | } |
| 305 | |
| 306 | av_log(ctx, AV_LOG_VERBOSE, "seek_point:%"PRIi64" format_name:%s file_name:%s stream_index:%d\n", |
| 307 | movie->seek_point, movie->format_name, movie->file_name, |
| 308 | movie->stream_index); |
| 309 | |
| 310 | return 0; |
| 311 | } |
| 312 | |
| 313 | static av_cold void movie_uninit(AVFilterContext *ctx) |
| 314 | { |
| 315 | MovieContext *movie = ctx->priv; |
| 316 | int i; |
| 317 | |
| 318 | for (i = 0; i < ctx->nb_outputs; i++) { |
| 319 | av_freep(&ctx->output_pads[i].name); |
| 320 | if (movie->st[i].st) |
| 321 | avcodec_close(movie->st[i].st->codec); |
| 322 | } |
| 323 | av_freep(&movie->st); |
| 324 | av_freep(&movie->out_index); |
| 325 | if (movie->format_ctx) |
| 326 | avformat_close_input(&movie->format_ctx); |
| 327 | } |
| 328 | |
| 329 | static int movie_query_formats(AVFilterContext *ctx) |
| 330 | { |
| 331 | MovieContext *movie = ctx->priv; |
| 332 | int list[] = { 0, -1 }; |
| 333 | int64_t list64[] = { 0, -1 }; |
| 334 | int i; |
| 335 | |
| 336 | for (i = 0; i < ctx->nb_outputs; i++) { |
| 337 | MovieStream *st = &movie->st[i]; |
| 338 | AVCodecContext *c = st->st->codec; |
| 339 | AVFilterLink *outlink = ctx->outputs[i]; |
| 340 | |
| 341 | switch (c->codec_type) { |
| 342 | case AVMEDIA_TYPE_VIDEO: |
| 343 | list[0] = c->pix_fmt; |
| 344 | ff_formats_ref(ff_make_format_list(list), &outlink->in_formats); |
| 345 | break; |
| 346 | case AVMEDIA_TYPE_AUDIO: |
| 347 | list[0] = c->sample_fmt; |
| 348 | ff_formats_ref(ff_make_format_list(list), &outlink->in_formats); |
| 349 | list[0] = c->sample_rate; |
| 350 | ff_formats_ref(ff_make_format_list(list), &outlink->in_samplerates); |
| 351 | list64[0] = c->channel_layout; |
| 352 | ff_channel_layouts_ref(avfilter_make_format64_list(list64), |
| 353 | &outlink->in_channel_layouts); |
| 354 | break; |
| 355 | } |
| 356 | } |
| 357 | |
| 358 | return 0; |
| 359 | } |
| 360 | |
| 361 | static int movie_config_output_props(AVFilterLink *outlink) |
| 362 | { |
| 363 | AVFilterContext *ctx = outlink->src; |
| 364 | MovieContext *movie = ctx->priv; |
| 365 | unsigned out_id = FF_OUTLINK_IDX(outlink); |
| 366 | MovieStream *st = &movie->st[out_id]; |
| 367 | AVCodecContext *c = st->st->codec; |
| 368 | |
| 369 | outlink->time_base = st->st->time_base; |
| 370 | |
| 371 | switch (c->codec_type) { |
| 372 | case AVMEDIA_TYPE_VIDEO: |
| 373 | outlink->w = c->width; |
| 374 | outlink->h = c->height; |
| 375 | outlink->frame_rate = st->st->r_frame_rate; |
| 376 | break; |
| 377 | case AVMEDIA_TYPE_AUDIO: |
| 378 | break; |
| 379 | } |
| 380 | |
| 381 | return 0; |
| 382 | } |
| 383 | |
| 384 | static char *describe_frame_to_str(char *dst, size_t dst_size, |
| 385 | AVFrame *frame, enum AVMediaType frame_type, |
| 386 | AVFilterLink *link) |
| 387 | { |
| 388 | switch (frame_type) { |
| 389 | case AVMEDIA_TYPE_VIDEO: |
| 390 | snprintf(dst, dst_size, |
| 391 | "video pts:%s time:%s size:%dx%d aspect:%d/%d", |
| 392 | av_ts2str(frame->pts), av_ts2timestr(frame->pts, &link->time_base), |
| 393 | frame->width, frame->height, |
| 394 | frame->sample_aspect_ratio.num, |
| 395 | frame->sample_aspect_ratio.den); |
| 396 | break; |
| 397 | case AVMEDIA_TYPE_AUDIO: |
| 398 | snprintf(dst, dst_size, |
| 399 | "audio pts:%s time:%s samples:%d", |
| 400 | av_ts2str(frame->pts), av_ts2timestr(frame->pts, &link->time_base), |
| 401 | frame->nb_samples); |
| 402 | break; |
| 403 | default: |
| 404 | snprintf(dst, dst_size, "%s BUG", av_get_media_type_string(frame_type)); |
| 405 | break; |
| 406 | } |
| 407 | return dst; |
| 408 | } |
| 409 | |
| 410 | static int rewind_file(AVFilterContext *ctx) |
| 411 | { |
| 412 | MovieContext *movie = ctx->priv; |
| 413 | int64_t timestamp = movie->seek_point; |
| 414 | int ret, i; |
| 415 | |
| 416 | if (movie->format_ctx->start_time != AV_NOPTS_VALUE) |
| 417 | timestamp += movie->format_ctx->start_time; |
| 418 | ret = av_seek_frame(movie->format_ctx, -1, timestamp, AVSEEK_FLAG_BACKWARD); |
| 419 | if (ret < 0) { |
| 420 | av_log(ctx, AV_LOG_ERROR, "Unable to loop: %s\n", av_err2str(ret)); |
| 421 | movie->loop_count = 1; /* do not try again */ |
| 422 | return ret; |
| 423 | } |
| 424 | |
| 425 | for (i = 0; i < ctx->nb_outputs; i++) { |
| 426 | avcodec_flush_buffers(movie->st[i].st->codec); |
| 427 | movie->st[i].done = 0; |
| 428 | } |
| 429 | movie->eof = 0; |
| 430 | return 0; |
| 431 | } |
| 432 | |
| 433 | /** |
| 434 | * Try to push a frame to the requested output. |
| 435 | * |
| 436 | * @param ctx filter context |
| 437 | * @param out_id number of output where a frame is wanted; |
| 438 | * if the frame is read from file, used to set the return value; |
| 439 | * if the codec is being flushed, flush the corresponding stream |
| 440 | * @return 1 if a frame was pushed on the requested output, |
| 441 | * 0 if another attempt is possible, |
| 442 | * <0 AVERROR code |
| 443 | */ |
| 444 | static int movie_push_frame(AVFilterContext *ctx, unsigned out_id) |
| 445 | { |
| 446 | MovieContext *movie = ctx->priv; |
| 447 | AVPacket *pkt = &movie->pkt; |
| 448 | enum AVMediaType frame_type; |
| 449 | MovieStream *st; |
| 450 | int ret, got_frame = 0, pkt_out_id; |
| 451 | AVFilterLink *outlink; |
| 452 | AVFrame *frame; |
| 453 | |
| 454 | if (!pkt->size) { |
| 455 | if (movie->eof) { |
| 456 | if (movie->st[out_id].done) { |
| 457 | if (movie->loop_count != 1) { |
| 458 | ret = rewind_file(ctx); |
| 459 | if (ret < 0) |
| 460 | return ret; |
| 461 | movie->loop_count -= movie->loop_count > 1; |
| 462 | av_log(ctx, AV_LOG_VERBOSE, "Stream finished, looping.\n"); |
| 463 | return 0; /* retry */ |
| 464 | } |
| 465 | return AVERROR_EOF; |
| 466 | } |
| 467 | pkt->stream_index = movie->st[out_id].st->index; |
| 468 | /* packet is already ready for flushing */ |
| 469 | } else { |
| 470 | ret = av_read_frame(movie->format_ctx, &movie->pkt0); |
| 471 | if (ret < 0) { |
| 472 | av_init_packet(&movie->pkt0); /* ready for flushing */ |
| 473 | *pkt = movie->pkt0; |
| 474 | if (ret == AVERROR_EOF) { |
| 475 | movie->eof = 1; |
| 476 | return 0; /* start flushing */ |
| 477 | } |
| 478 | return ret; |
| 479 | } |
| 480 | *pkt = movie->pkt0; |
| 481 | } |
| 482 | } |
| 483 | |
| 484 | pkt_out_id = pkt->stream_index > movie->max_stream_index ? -1 : |
| 485 | movie->out_index[pkt->stream_index]; |
| 486 | if (pkt_out_id < 0) { |
| 487 | av_free_packet(&movie->pkt0); |
| 488 | pkt->size = 0; /* ready for next run */ |
| 489 | pkt->data = NULL; |
| 490 | return 0; |
| 491 | } |
| 492 | st = &movie->st[pkt_out_id]; |
| 493 | outlink = ctx->outputs[pkt_out_id]; |
| 494 | |
| 495 | frame = av_frame_alloc(); |
| 496 | if (!frame) |
| 497 | return AVERROR(ENOMEM); |
| 498 | |
| 499 | frame_type = st->st->codec->codec_type; |
| 500 | switch (frame_type) { |
| 501 | case AVMEDIA_TYPE_VIDEO: |
| 502 | ret = avcodec_decode_video2(st->st->codec, frame, &got_frame, pkt); |
| 503 | break; |
| 504 | case AVMEDIA_TYPE_AUDIO: |
| 505 | ret = avcodec_decode_audio4(st->st->codec, frame, &got_frame, pkt); |
| 506 | break; |
| 507 | default: |
| 508 | ret = AVERROR(ENOSYS); |
| 509 | break; |
| 510 | } |
| 511 | if (ret < 0) { |
| 512 | av_log(ctx, AV_LOG_WARNING, "Decode error: %s\n", av_err2str(ret)); |
| 513 | av_frame_free(&frame); |
| 514 | av_free_packet(&movie->pkt0); |
| 515 | movie->pkt.size = 0; |
| 516 | movie->pkt.data = NULL; |
| 517 | return 0; |
| 518 | } |
| 519 | if (!ret || st->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) |
| 520 | ret = pkt->size; |
| 521 | |
| 522 | pkt->data += ret; |
| 523 | pkt->size -= ret; |
| 524 | if (pkt->size <= 0) { |
| 525 | av_free_packet(&movie->pkt0); |
| 526 | pkt->size = 0; /* ready for next run */ |
| 527 | pkt->data = NULL; |
| 528 | } |
| 529 | if (!got_frame) { |
| 530 | if (!ret) |
| 531 | st->done = 1; |
| 532 | av_frame_free(&frame); |
| 533 | return 0; |
| 534 | } |
| 535 | |
| 536 | frame->pts = av_frame_get_best_effort_timestamp(frame); |
| 537 | av_dlog(ctx, "movie_push_frame(): file:'%s' %s\n", movie->file_name, |
| 538 | describe_frame_to_str((char[1024]){0}, 1024, frame, frame_type, outlink)); |
| 539 | |
| 540 | if (st->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) { |
| 541 | if (frame->format != outlink->format) { |
| 542 | av_log(ctx, AV_LOG_ERROR, "Format changed %s -> %s, discarding frame\n", |
| 543 | av_get_pix_fmt_name(outlink->format), |
| 544 | av_get_pix_fmt_name(frame->format) |
| 545 | ); |
| 546 | av_frame_free(&frame); |
| 547 | return 0; |
| 548 | } |
| 549 | } |
| 550 | ret = ff_filter_frame(outlink, frame); |
| 551 | |
| 552 | if (ret < 0) |
| 553 | return ret; |
| 554 | return pkt_out_id == out_id; |
| 555 | } |
| 556 | |
| 557 | static int movie_request_frame(AVFilterLink *outlink) |
| 558 | { |
| 559 | AVFilterContext *ctx = outlink->src; |
| 560 | unsigned out_id = FF_OUTLINK_IDX(outlink); |
| 561 | int ret; |
| 562 | |
| 563 | while (1) { |
| 564 | ret = movie_push_frame(ctx, out_id); |
| 565 | if (ret) |
| 566 | return FFMIN(ret, 0); |
| 567 | } |
| 568 | } |
| 569 | |
| 570 | #if CONFIG_MOVIE_FILTER |
| 571 | |
| 572 | AVFILTER_DEFINE_CLASS(movie); |
| 573 | |
| 574 | AVFilter ff_avsrc_movie = { |
| 575 | .name = "movie", |
| 576 | .description = NULL_IF_CONFIG_SMALL("Read from a movie source."), |
| 577 | .priv_size = sizeof(MovieContext), |
| 578 | .priv_class = &movie_class, |
| 579 | .init = movie_common_init, |
| 580 | .uninit = movie_uninit, |
| 581 | .query_formats = movie_query_formats, |
| 582 | |
| 583 | .inputs = NULL, |
| 584 | .outputs = NULL, |
| 585 | .flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS, |
| 586 | }; |
| 587 | |
| 588 | #endif /* CONFIG_MOVIE_FILTER */ |
| 589 | |
| 590 | #if CONFIG_AMOVIE_FILTER |
| 591 | |
| 592 | #define amovie_options movie_options |
| 593 | AVFILTER_DEFINE_CLASS(amovie); |
| 594 | |
| 595 | AVFilter ff_avsrc_amovie = { |
| 596 | .name = "amovie", |
| 597 | .description = NULL_IF_CONFIG_SMALL("Read audio from a movie source."), |
| 598 | .priv_size = sizeof(MovieContext), |
| 599 | .init = movie_common_init, |
| 600 | .uninit = movie_uninit, |
| 601 | .query_formats = movie_query_formats, |
| 602 | |
| 603 | .inputs = NULL, |
| 604 | .outputs = NULL, |
| 605 | .priv_class = &amovie_class, |
| 606 | .flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS, |
| 607 | }; |
| 608 | |
| 609 | #endif /* CONFIG_AMOVIE_FILTER */ |