diff options
Diffstat (limited to 'chromium/third_party/ffmpeg/libavdevice/avdevice.c')
| -rw-r--r-- | chromium/third_party/ffmpeg/libavdevice/avdevice.c | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/chromium/third_party/ffmpeg/libavdevice/avdevice.c b/chromium/third_party/ffmpeg/libavdevice/avdevice.c index b9b18f2576f..6a75bd79d7f 100644 --- a/chromium/third_party/ffmpeg/libavdevice/avdevice.c +++ b/chromium/third_party/ffmpeg/libavdevice/avdevice.c @@ -17,9 +17,46 @@ */ #include "libavutil/avassert.h" +#include "libavutil/samplefmt.h" +#include "libavutil/pixfmt.h" +#include "libavcodec/avcodec.h" #include "avdevice.h" #include "config.h" +#define E AV_OPT_FLAG_ENCODING_PARAM +#define D AV_OPT_FLAG_DECODING_PARAM +#define A AV_OPT_FLAG_AUDIO_PARAM +#define V AV_OPT_FLAG_VIDEO_PARAM +#define OFFSET(x) offsetof(AVDeviceCapabilitiesQuery, x) + +const AVOption av_device_capabilities[] = { + { "codec", "codec", OFFSET(codec), AV_OPT_TYPE_INT, + {.i64 = AV_CODEC_ID_NONE}, AV_CODEC_ID_NONE, INT_MAX, E|D|A|V }, + { "sample_format", "sample format", OFFSET(sample_format), AV_OPT_TYPE_INT, + {.i64 = AV_SAMPLE_FMT_NONE}, -1, INT_MAX, E|D|A }, + { "sample_rate", "sample rate", OFFSET(sample_rate), AV_OPT_TYPE_INT, + {.i64 = -1}, -1, INT_MAX, E|D|A }, + { "channels", "channels", OFFSET(channels), AV_OPT_TYPE_INT, + {.i64 = -1}, -1, INT_MAX, E|D|A }, + { "channel_layout", "channel layout", OFFSET(channel_layout), AV_OPT_TYPE_INT64, + {.i64 = -1}, -1, INT_MAX, E|D|A }, + { "pixel_format", "pixel format", OFFSET(pixel_format), AV_OPT_TYPE_INT, + {.i64 = AV_PIX_FMT_NONE}, -1, INT_MAX, E|D|V }, + { "window_size", "window size", OFFSET(window_width), AV_OPT_TYPE_IMAGE_SIZE, + {.str = NULL}, -1, INT_MAX, E|D|V }, + { "frame_size", "frame size", OFFSET(frame_width), AV_OPT_TYPE_IMAGE_SIZE, + {.str = NULL}, -1, INT_MAX, E|D|V }, + { "fps", "fps", OFFSET(fps), AV_OPT_TYPE_RATIONAL, + {.dbl = -1}, -1, INT_MAX, E|D|V }, + { NULL } +}; + +#undef E +#undef D +#undef A +#undef V +#undef OFFSET + unsigned avdevice_version(void) { av_assert0(LIBAVDEVICE_VERSION_MICRO >= 100); @@ -36,3 +73,157 @@ const char * avdevice_license(void) #define LICENSE_PREFIX "libavdevice license: " return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1; } + +static void *av_device_next(void *prev, int output, + AVClassCategory c1, AVClassCategory c2) +{ + const AVClass *pc; + AVClassCategory category = AV_CLASS_CATEGORY_NA; + do { + if (output) { + if (!(prev = av_oformat_next(prev))) + break; + pc = ((AVOutputFormat *)prev)->priv_class; + } else { + if (!(prev = av_iformat_next(prev))) + break; + pc = ((AVInputFormat *)prev)->priv_class; + } + if (!pc) + continue; + category = pc->category; + } while (category != c1 && category != c2); + return prev; +} + +AVInputFormat *av_input_audio_device_next(AVInputFormat *d) +{ + return av_device_next(d, 0, AV_CLASS_CATEGORY_DEVICE_AUDIO_INPUT, + AV_CLASS_CATEGORY_DEVICE_INPUT); +} + +AVInputFormat *av_input_video_device_next(AVInputFormat *d) +{ + return av_device_next(d, 0, AV_CLASS_CATEGORY_DEVICE_VIDEO_INPUT, + AV_CLASS_CATEGORY_DEVICE_INPUT); +} + +AVOutputFormat *av_output_audio_device_next(AVOutputFormat *d) +{ + return av_device_next(d, 1, AV_CLASS_CATEGORY_DEVICE_AUDIO_OUTPUT, + AV_CLASS_CATEGORY_DEVICE_OUTPUT); +} + +AVOutputFormat *av_output_video_device_next(AVOutputFormat *d) +{ + return av_device_next(d, 1, AV_CLASS_CATEGORY_DEVICE_VIDEO_OUTPUT, + AV_CLASS_CATEGORY_DEVICE_OUTPUT); +} + +int avdevice_app_to_dev_control_message(struct AVFormatContext *s, enum AVAppToDevMessageType type, + void *data, size_t data_size) +{ + if (!s->oformat || !s->oformat->control_message) + return AVERROR(ENOSYS); + return s->oformat->control_message(s, type, data, data_size); +} + +int avdevice_dev_to_app_control_message(struct AVFormatContext *s, enum AVDevToAppMessageType type, + void *data, size_t data_size) +{ + if (!s->control_message_cb) + return AVERROR(ENOSYS); + return s->control_message_cb(s, type, data, data_size); +} + +int avdevice_capabilities_create(AVDeviceCapabilitiesQuery **caps, AVFormatContext *s, + AVDictionary **device_options) +{ + int ret; + av_assert0(s && caps); + av_assert0(s->iformat || s->oformat); + if ((s->oformat && !s->oformat->create_device_capabilities) || + (s->iformat && !s->iformat->create_device_capabilities)) + return AVERROR(ENOSYS); + *caps = av_mallocz(sizeof(**caps)); + if (!(*caps)) + return AVERROR(ENOMEM); + (*caps)->device_context = s; + if (((ret = av_opt_set_dict(s->priv_data, device_options)) < 0)) + goto fail; + if (s->iformat) { + if ((ret = s->iformat->create_device_capabilities(s, *caps)) < 0) + goto fail; + } else { + if ((ret = s->oformat->create_device_capabilities(s, *caps)) < 0) + goto fail; + } + av_opt_set_defaults(*caps); + return 0; + fail: + av_freep(caps); + return ret; +} + +void avdevice_capabilities_free(AVDeviceCapabilitiesQuery **caps, AVFormatContext *s) +{ + if (!s || !caps || !(*caps)) + return; + av_assert0(s->iformat || s->oformat); + if (s->iformat) { + if (s->iformat->free_device_capabilities) + s->iformat->free_device_capabilities(s, *caps); + } else { + if (s->oformat->free_device_capabilities) + s->oformat->free_device_capabilities(s, *caps); + } + av_freep(caps); +} + +int avdevice_list_devices(AVFormatContext *s, AVDeviceInfoList **device_list) +{ + int ret; + av_assert0(s); + av_assert0(device_list); + av_assert0(s->oformat || s->iformat); + if ((s->oformat && !s->oformat->get_device_list) || + (s->iformat && !s->iformat->get_device_list)) { + *device_list = NULL; + return AVERROR(ENOSYS); + } + *device_list = av_mallocz(sizeof(AVDeviceInfoList)); + if (!(*device_list)) + return AVERROR(ENOMEM); + /* no default device by default */ + (*device_list)->default_device = -1; + if (s->oformat) + ret = s->oformat->get_device_list(s, *device_list); + else + ret = s->iformat->get_device_list(s, *device_list); + if (ret < 0) + avdevice_free_list_devices(device_list); + return ret; +} + +void avdevice_free_list_devices(AVDeviceInfoList **device_list) +{ + AVDeviceInfoList *list; + AVDeviceInfo *dev; + int i; + + av_assert0(device_list); + list = *device_list; + if (!list) + return; + + for (i = 0; i < list->nb_devices; i++) { + dev = list->devices[i]; + if (dev) { + av_free(dev->device_name); + av_free(dev->device_description); + av_free(dev); + } + } + av_free(list->devices); + av_freep(device_list); +} |